Power Banks & External Batteries
I - Compact power banks
Really practical, thanks to their compact dimensions, small external batteries can be carried everywhere, and recharge your devices despite their smaller capacity. Discover the best pocket power banks.
Anker Nano A1653
See price and availability (57)
A pocket 5000 mAh power bank that plugs straight into the phone thanks to its built-in foldable USB-C connector, 22.5 W and barely 100 g.
- Capacity: 5000 mAh
- Power: 22.5 W max (USB-C)
- Connectivity: Built-in USB-C plug + USB-C port
- Weight: 100 g
- Built-in USB-C plug, 22.5 W and 100 g, plugs into the phone
The Anker Nano (reference A1653) is a mini power bank of 5000 mAh built for on-the-go top-ups. Its foldable USB-C connector flips out and plugs directly into the phone, with no cable, while an extra USB-C port lets you charge a second device or recharge the battery itself. It delivers up to 22.5 W, enough to quickly give a smartphone a good charge. At 100 g in an ultra-compact cube shape, it slips into any pocket, with four charge LEDs and a shell largely made from recycled plastics.
We took to this Anker Nano A1653 for one simple reason: it fits in a pocket and plugs straight into the phone, with no cable to carry. The foldable USB-C connector is genuinely clever, you flip it out, clip it onto an iPhone or Android phone, and charging starts. At 100 g on the scale, you forget it in a jacket pocket, and the 5000 mAh are enough to give most phones a full charge, plenty to see out a day with peace of mind. The 22.5 W do the job: twenty minutes plugged in and you get a good chunk of battery back. The extra USB-C port is handy for charging a second device or for recharging the battery itself. The matte finish is understated and pleasant, and the four LEDs clearly show the remaining level. Two honest reservations: 5000 mAh is a single recharge, no more, and the little cube shape sticks out a bit when the plug is attached to the phone. But for an ultra-light, always-ready, cable-free top-up, the Nano A1653 is an excellent everyday companion.
Anker Zolo 10000 (30W)
See price and availability (55)
A 10,000 mAh pocket pack with its USB-C cable already attached: 30 W fast charging and three devices powered at once, with no cord to carry.
- Capacity: 10,000 mAh (37 Wh)
- Power: 30 W max (USB-C Power Delivery)
- Ports: Built-in USB-C cable + USB-C + USB-A
- Format: Compact, fits in a pocket
- Built-in 30 W cable and 3 devices at once
The Anker Zolo 10,000 mAh plays the card of effective simplicity. Its USB-C cable is built into the casing, which settles the forgotten-cord question for good, and delivers up to 30 W: enough to take an iPhone from about 20 to 60% in half an hour. An extra USB-C port and a USB-A port let you feed three devices at once, phone, earbuds and watch for example. With 10,000 mAh (37 Wh) in a format that fits a jeans pocket, it targets those who want a day's reserve without the bulk.
This little Zolo spent a month in the inner pocket of a backpack, and it does exactly what is asked of it. The built-in USB-C cable is the main argument, and it delivers day to day: you take out the pack, plug in, done, with no rummaging for a cord. The loop formed by the cable also serves to hang it, a practical detail. The 30 W available is clearly felt against entry-level packs limited to 18 W: an iPhone 15 gets back over half its charge in about thirty minutes, plenty for a lunch break or a commute. Being able to add earbuds on the USB-A and a watch on the second USB-C is welcome at the end of the day when everything is flat. Its 10,000 mAh give about two phone charges, an honest reserve for a busy day or a light weekend, without the weight of a 20,000 model. Two caveats: recharging the pack itself caps at 20 W, so allow a few hours for a full cycle, and the lack of a display means relying on LEDs to gauge the remaining level. At this price, the equation stays very favourable.
Xiaomi Mi Power Bank 3
See price and availability (9)
10000mAh and 22.5W fast charging in an ultra-compact body under £18: the Xiaomi Mi Power Bank 3 is the best-value top-up power bank.
- Capacity: 10000mAh
- Power: 22.5W max (fast charging)
- Ports: 2 USB-A + 1 USB-C (bidirectional)
- Design: Ultra-compact, about 200 g
- 22.5W and 3 ports in a mini body, at a low price
The Xiaomi Mi Power Bank 3 (Ultra Compact) is a 10000mAh power bank in a small body, designed for everyday top-ups. It delivers up to 22.5W fast charging and has 3 ports (2 USB-A and 1 bidirectional USB-C), enough to charge two devices at once. Its USB-C port also recharges it. Compact, sturdy with a tidy finish and offered at a low price, it charges a smartphone about twice. A dependable choice for everyday top-ups.
The Xiaomi Mi Power Bank 3 is a bit of the default power bank, the one you recommend without a second thought for everyday use. For under £18, it offers 10000mAh in a pocketable body, and its 22.5W fast charging tops up a smartphone far faster than old entry-level banks. We like its 3 ports, which let you plug in two devices at once, and the bidirectional USB-C port that also recharges it. The body is well finished for the price. In real use, it fills a smartphone about twice, enough for a weekend. The downsides are minor: no precise display, and power suited to phones and small devices, not laptops. But for reliable, affordable top-ups, it is hard to do better.
Nitecore NB10000
60.78€ (9)
Ultralight (150 g) and clad in carbon fibre, the Nitecore NB10000 offers 10,000 mAh that shrug off water and knocks, ideal for hiking.
- Capacity: 10,000 mAh
- Power: USB-C 20 W, USB-A 18 W
- Weight: 150 g
- Durability: Carbon fibre, IPX-5, 1.5 m drop
- 150 g carbon fibre, rugged, water-resistant and flight-ready
At just 150 g for 10,000 mAh, the Nitecore NB10000 is one of the lightest power banks on the market. Its carbon fibre body makes it ultra-rugged (1.5 m drop, IPX-5 water resistance) without adding weight. It offers a USB-C 20 W port and a USB-A 18 W port usable at the same time, plus a low-power mode for small devices. Ultra-thin (10.6 mm) and flight-ready, it is built for hiking, trail running, bikepacking and light travel.
We took the Nitecore NB10000 hiking and travelling, and its knockout argument is the weight: 150 g, you literally forget it in the bag. For anyone counting grams on a trek or bikepacking trip, it is a real game-changer, especially as the 10,000 mAh capacity is plenty to last several days with a phone. The carbon fibre body inspires confidence: after a few knocks and a downpour, it looks brand new, and the woven finish is gorgeous. When charging, the 20 W over USB-C top up a smartphone at a good pace, and being able to plug in two devices at once is handy. The low-power mode is clever for charging a watch or earbuds without the battery cutting out. Two honest reservations: the power stays moderate (not enough to charge a big laptop at full speed), and the ultra-thin format, very pleasant, makes it a little slippery. But for a light, tough, reliable outdoor power bank, the NB10000 remains a hard-to-beat benchmark.
Nitecore Pocket 10000
£62.95 (8)
10,000 mAh and a built-in USB-C cable in 12.5 mm of thickness: the carbon-fiber Nitecore Pocket 10000 slips in anywhere, for just 160 g.
- Capacity: 10,000 mAh (38.5 Wh)
- Output: USB-C 22.5 W + built-in cable 20 W
- Form: 12.5 mm thick, 160 g
- Toughness: IP65, carbon fiber
- Built-in USB-C cable, ultra-slim, flight-ready
The Nitecore Pocket 10000 is a slim, light 10,000 mAh power bank built for travel and everyday use. Its woven carbon-fiber shell is just 12.5 mm thick for 160 g, and packs a built-in USB-C cable alongside a USB-C port. You can charge two devices at once, up to 22.5 W, and recharge the bank while powering a device thanks to pass-through. IP65 rated, it resists dust and splashes. A low-current mode nurses earbuds and watches, and four LEDs show the remaining level.
The Pocket 10000 pulls off a neat feat: fitting 10,000 mAh and a built-in USB-C cable into a 12.5 mm body barely bigger than a card, for 160 g. The woven carbon fiber is gorgeous and reassuring, and the idea of a cable tucked into the edge is excellent: no more hunting for a cord, you unfold it and plug in. The 22.5 W is enough to recharge a smartphone at a good pace, and you can power two devices at once through the cable and the USB-C port. The IP65 rating reassures in the rain, and the low-current mode is perfect for earbuds. Two honest reservations: the power stays tuned for smartphones and tablets, not for charging a laptop at full speed, and the price can climb depending on the seller, so it pays to compare. But for a slim, elegant and genuinely well-thought-out pocket bank, it is among the best.
Nitecore Carbon 6K
£30.13 (6)
88 g, IP68 and a carbon-fiber shell: the Nitecore Carbon 6K is an ultra-portable 6000 mAh power bank that also extends Nitecore 6K headlamps.
- Capacity: 6000 mAh (21.6 Wh)
- Output: USB-C 10 W (5V/2A)
- Weight: 88 g (carbon fiber)
- Water resistance: IP68 (2 m submersible)
- Ultralight, waterproof, 6K headlamp extender
The Nitecore Carbon 6K is an ultralight 6000 mAh power bank built for the outdoors and everyday carry. Its carbon-fiber shell keeps it to 88 g while making it tough, with an IP68 rating (submersible to 2 m). It recharges a smartphone, a watch or earbuds over its USB-C port (10 W), and also acts as a backup battery to extend the runtime of Nitecore 6K-series headlamps. A rear red safety light and a record energy density round off this concentrate of portability.
The Carbon 6K is a product apart: it is not the most powerful power bank, but it is one of the lightest and toughest we have handled. At 88 g for 6000 mAh, in a woven carbon-fiber shell, it disappears at the bottom of a trail pack or a pocket. The IP68 rating, which allows submersion to 2 meters, makes it at home in the rain, on a kayak or in a cave. We like its dual function: on top of topping up a phone or a watch over USB-C, it extends the runtime of Nitecore 6K headlamps on long night outings. Two honest reservations: the 10 W output is modest, this is a backup battery rather than a fast charger, and like any cell of this type, the usable capacity is below the advertised 6000 mAh (real-world useful energy is closer to 3500-4000 mAh at 5 V). But for pure lightness and toughness, it is hard to beat.
Xiaomi Ultra Slim 5000
£17.99 (4)
Ten millimetres thick and 93 grams: a power bank the size of a bank card that slips into a back pocket without you feeling it.
- Capacity: 5,000 mAh (19.4 Wh)
- Format: 113 x 53 x 10 mm, 93 g
- Power: 20W max, bidirectional USB-C
- Recharging: 18W, about 1 h 45
- 10 mm thick, the footprint of a bank card
The Xiaomi Ultra Slim 5000 pushes back against ever-bigger power banks: 113 x 53 mm, 10 mm thick and 93 g, barely more than a smartphone lying flat. Its single USB-C port is bidirectional and delivers up to 20W, enough to bring an iPhone back to half charge in about half an hour. Its 5000 mAh (19.4 Wh) are not aimed at a weekend off-grid but at a day's insurance: one full phone charge, without ever weighing down a pocket. The USB-C cable is included and it refills itself in 105 minutes at 18W.
You have to hold it to understand the point. At 10 mm and 93 g, the Ultra Slim slides into a shirt pocket, into a backpack sleeve, even into a slightly generous card holder, where a 10,000 mAh pack forces you to open the bag. It is an object you carry without thinking about it, and that is exactly the use it targets. The 20W USB-C port does the job on a phone: half an hour brings an iPhone back to roughly half charge, which comfortably covers the end of an evening or a journey. The port is bidirectional, so one cable both empties and refills it, and that cable is in the box, which is no longer a given. The limits are deliberate and worth knowing before buying. Its 5000 mAh give one phone charge, one, not two: this is not a travel battery, it is a safety net for the day. The single port rules out charging two devices at once, and with no display you rely on four indicator lights. Finally, 20W is modest next to the 45 or 65W of thicker models. But none of those models disappears into a pocket, and that is the whole point.
II - High capacity power banks
Need a lot of power? Here is our selection of the best high capacity external batteries. Heavier and less transportable than other power banks, they are destined for more restricted mobility, but are monsters in terms of capacity.
Anker 737 Power Bank
See price and availability (60)
24000mAh and 140W of power: the Anker 737 charges a laptop like a smartphone, with a display that shows everything in real time.
- Capacity: 24000mAh (86.4Wh)
- Power: 140W max (Power Delivery 3.1)
- Ports: 2 USB-C + 1 USB-A
- Display: Digital display (power, runtime, time)
- 140W to charge a laptop
The Anker 737 (PowerCore 24K) is a high-capacity 24000mAh power bank able to deliver up to 140W via Power Delivery 3.1. With its 3 ports (2 USB-C and 1 USB-A), it charges a laptop, a smartphone or a tablet at full speed, and can power several devices at once. Its digital display shows input and output power, remaining charge and estimated charging time. It recharges itself at 140W, a full charge in about 1 hour.
The Anker 737 is the power bank you take when you refuse to compromise. Its 140W make it one of the few power banks able to charge a laptop at full speed, MacBook Pro included, and not just as a stopgap. Over a day on the move, it charged a laptop, two smartphones and earbuds without flinching, its 24000mAh offering a real reserve. The digital display is a genuine plus day to day: you see at a glance the power delivered and the remaining runtime, which avoids nasty surprises. It recharges itself very fast, in about an hour with a good 140W charger. The only downsides are its weight and size, hefty for a power bank (over 600 g), and its price, above average. But for real portable power, it is a benchmark.
Anker Zolo 20000 (30W)
See price and availability (53)
A tough built-in USB-C cable, 20,000 mAh and 30 W fast charging: the Anker Zolo is the cable-free travel power bank to pack, at a small price.
- Capacity: 20,000 mAh (72 Wh)
- Power: 30 W (fast charge)
- Cable: Built-in USB-C (10,000 bends)
- Weight: 391 g
- Built-in cable, 20,000 mAh, flight-ready, cheap
The Anker Zolo 20000 is a 20,000 mAh power bank designed to travel light, with no separate cable. Its built-in USB-C cable, braided and rated for 10,000 bends, also works as a lanyard: plug in and recharge any smartphone or tablet. The 30 W fast charging suits any recent smartphone, and an extra USB-C plus a USB-A port let you add more devices. With 72 Wh that are cabin-friendly and a tight price, it is one of the best capacity-to-price ratios around.
The Anker Zolo is the battery we recommend without hesitation to anyone heading off on a trip. Its core idea is simple but brilliant: the USB-C cable is built right in, braided and sturdy, and doubles as a lanyard. You never hunt for a cable again, you grab the battery, unfold the cord and charge, whether it is an iPhone, a Samsung or a tablet. The 30 W will not rival big laptop batteries, but for a smartphone it is genuine fast charging: half an iPhone recovered in about half an hour. Its 20,000 mAh easily last two to three days of phone use, or one long multi-device day. We also like the extra USB-C and USB-A ports, to plug in a second device or a pair of earbuds. Two honest downsides: it is a little heavy and thick for a pocket, better suited to a bag, and it will not charge a laptop at full speed, which is not its aim. But at this price, with this capacity and this near-indestructible built-in cable, it is hard to beat for everyday mobile use.
Anker A1695 (165W)
See price and availability (48)
With 25,000 mAh, 165 W, two built-in cables and a display, the Anker A1695 power bank even charges a laptop and up to 4 devices at once.
- Capacity: 25,000 mAh (90 Wh)
- Power: 165 W (USB-C 100 W max)
- Ports: 3 USB-C + USB-A + 2 built-in cables
- Weight: 595 g
- 165 W, built-in and retractable cables, display, 4 devices
The Anker A1695 is a 25,000 mAh, 165 W power bank able to charge a laptop as well as a smartphone. Its three USB-C ports (100 W max each) and USB-A port power up to four devices at once, while its two built-in USB-C cables (fixed and retractable) mean no separate cable to carry. A smart display shows charge, power and remaining time. Recharged to 30% in 20 minutes, with 90 Wh cleared for flights, it targets heavy users and mobile work.
The Anker A1695 blew us away with its versatility. It is the first power bank you grab without a second thought: it charges the phone, the tablet and above all the laptop, all at once. The 100 W per USB-C port make a real difference, a MacBook gets half its charge back in half an hour, just like on the mains. But the detail we love is the two built-in cables: the retractable one for daily use, the fixed one as a backup, you never hunt for a cable again. The display is very readable and gives all the useful info, watts in, watts out, time remaining, you always know where you stand. Its 25,000 mAh easily last a big day of work away from an outlet, and it recharges itself quickly. Two honest reservations: at nearly 600 g, this is not a battery you slip into a pocket, it is made for a bag, and its price is higher than a regular power bank. But for intensive use, with this power and these built-in cables, it is hard to fault.
Anker Power Bank 20000 (87W)
See price and availability (44)
20,000 mAh and 87 W with the USB-C cable already in the pack: enough to charge a MacBook at 65 W plus two more devices, without ever hunting for a cord.
- Capacity: 20,000 mAh (72 Wh)
- Power: 87 W total (65 W max on one port)
- Ports: Built-in USB-C cable + USB-C + USB-A
- Recharge: 0 to 100% in 1.5 h (65 W charger)
- Built-in 65 W USB-C cable, 3 devices at once
The Anker A1383 solves the problem every traveller knows: the power bank is here, the cable stayed home. Its USB-C cable is built into the casing, rated for over 10,000 bends, and alone delivers up to 65 W, enough to charge a MacBook Air or an iPhone at full speed. With the extra USB-C port and the USB-A port, total output climbs to 87 W across three simultaneous devices. Its 20,000 mAh (72 Wh) give roughly four phone charges, stay cabin-legal, and refill in an hour and a half with a 65 W charger.
We carried this Anker A1383 through a month of travel, and the built-in cable genuinely changes things. It sounds trivial, but no longer digging through a bag for a USB-C cord is the kind of detail you never give up once you have had it. The cable is short but well designed: it stows in a groove in the casing and doubles as a strap to grab the pack. On power, the 65 W available on that cable charged our MacBook Air through a meeting without the machine complaining, and an iPhone 16 went from 20 to 80% in a little under half an hour. The 20,000 mAh easily cover two days of heavy phone use, or a full day juggling phone, earbuds and tablet across the three outputs. The small display shows the remaining percentage, which avoids nasty surprises at the airport. Two honest caveats: at 465 g you feel it in a jacket pocket, and the 1.5-hour full recharge assumes you have a 65 W charger to hand, otherwise expect far longer. For travel or nomadic work, it is an excellent companion.
III - Fast power banks
New technologies, such as Power Delivery or Quick Charge 3.0, allow your recent and compatible devices to charge at incredible speeds. Here is our selection of external batteries capable of charging at very high speed.
Anker Nano 30W
See price and availability (47)
Compact with its built-in USB-C cable, a display and 30 W fast charging, the 10,000 mAh Anker Nano 30W recharges everything, anywhere.
- Capacity: 10,000 mAh (37 Wh)
- Power: 30 W (USB-C PD)
- Ports: Built-in USB-C cable + USB-C + USB-A
- Weight: 215 g
- Built-in USB-C cable, 30 W and a colour display
The Anker Nano 30W is a pocket-sized 10,000 mAh power bank with a USB-C cable built right in, so there is no separate cable to carry. It delivers up to 30 W over USB-C Power Delivery to fast-charge a smartphone, a tablet, earbuds or even a light laptop. A colour display shows the remaining charge, and two extra ports (USB-C and USB-A) complement the built-in cable. Compact (215 g), bi-directional and made from recycled plastic, it is ideal for daily use and travel.
The Anker Nano 30W quickly won us over with how practical it is. The built-in USB-C cable is a genuine game-changer: no more digging for a cable at the bottom of the bag, it is always there, and it doubles as a loop to grab the battery. Day to day, the 30 W charge a smartphone quickly, you get half an iPhone's battery back in half an hour, and a tablet keeps up fine. The colour display is a real plus: you know exactly how much is left, no guessing with LEDs. With 10,000 mAh, you recharge a modern phone almost twice, plenty for a busy day or a light weekend. The pocket format and 215 g make it easy to take anywhere. Two honest reservations: the built-in cable, handy as it is, cannot be replaced if it wears out, and 30 W is a little tight to charge a large laptop at full speed. But for a smartphone and small devices, with this convenience and display, it is one of the most accomplished power banks in its class.
Anker Prime 20000 (200W)
See price and availability (33)
Two 100 W USB-C ports, 200 W in total and a smart display: the Anker Prime 20000 recharges two laptops at once, at full speed.
- Capacity: 20,000 mAh (72 Wh)
- Power: 200 W (2x USB-C 100 W)
- Ports: 2 USB-C + 1 USB-A
- Recharge: 100% in 1 hr 15 (100 W input)
- 200 W, two laptops at once, display, flight-ready
The Anker Prime 20000 (200W) is a premium power bank that can recharge two laptops at once. Its two USB-C ports each deliver up to 100 W, for 200 W in total, alongside a USB-A port. A smart LCD display shows the remaining level, the input and output power and the charging time. With 20,000 mAh (72 Wh), it recharges a smartphone about four times, refills itself in 1 hr 15 and stays cabin-friendly. The reference for demanding mobile work.
The Anker Prime 200 W impressed us from the very first trip. It is the battery you grab without thinking when you head off to work away from an outlet: it charges the phone, the tablet and above all the laptop, often all at once. The 100 W per USB-C port genuinely changes things, a MacBook regains half its charge in about forty minutes, exactly like on mains power. Plugging in two laptops at once without watching the output collapse is honestly impressive. The display is the second big strength: clear and precise, it shows watts in and out, the remaining percentage and the estimated time, so you never charge blind again. Its 20,000 mAh easily last a heavy multi-device day, and it refills itself very quickly, a full charge in a little over an hour with a good charger. Compatibility with the Anker Prime charging base is a real plus on a desk. Two honest reservations: at around 545 g, this is not a pocket battery, it lives in the bag, and its price places it firmly in the premium tier. A built-in cable would also have been welcome. But for raw power and handling two laptops, it is hard to fault.
Ugreen Nexode 55W
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The small power bank that charges hard: 10000mAh, 55W, a built-in USB-C cable with strap and a digital display, smaller than an iPhone.
- Capacity: 10,000 mAh (37 Wh)
- Power: 55W (Xiaomi), PD 45W
- Outputs: Built-in USB-C cable + USB-C + USB-A
- Weight: 249 g, digital display
- 55W, built-in cable and display, 249 g
The Ugreen Nexode 55W is a compact 10,000 mAh power bank built for power: up to 55W to charge an iPhone 17 Pro Max to 66% in 30 minutes. Smaller than an iPhone 17 Pro Max at 249 g, it packs a built-in USB-C cable (with strap), a USB-C port and a USB-A port to power three devices at once, plus a digital display showing level and power in real time. Under 100 Wh, it is allowed in the aircraft cabin: the ideal premium pocket reserve.
We adopted the Ugreen Nexode 55W as our everyday battery, and its format wins you over at once: it fits in a jeans pocket, weighs barely 249 g, and yet charges faster than many bigger models. The built-in USB-C cable saves carrying a cable, and its little strap is handy for clipping it to a bag. In practice, you get back two thirds of an iPhone in half an hour, excellent for this size. The digital display is pleasant: you see at a glance the percentage left and the power going out, no more charging blind. The three outputs help out when you travel as a pair. Two honest caveats: with 10,000 mAh you get about one and a half iPhone charges, so for long days you will want something bigger, and its price is high for this capacity, you pay for the power, the display and the built-in cable. But for a small, fast, complete and well-made battery, the Nexode 55W is a success that never leaves the pocket.
EcoFlow Rapid 25K
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25,000 mAh, 170W and two built-in retractable USB-C cables: the power bank that recharges a MacBook twice and your phone five times, with no cable to carry.
- Capacity: 25,000 mAh (cabin approved)
- Output: 170W (2 ports), 100W on 1 port
- Cables: 2 built-in retractable USB-C cables
- Recharge: 0 to 50% in 26 min, TFT screen
- 170W, 2 built-in cables, screen
The EcoFlow Rapid 25K is an all-in-one power bank designed for travel and remote work. Its 25,000 mAh (allowed in the aircraft cabin) recharge a MacBook twice or a phone four to five times, enough to last one to two days away from an outlet. It delivers up to 170W across two ports (100W on a single port), charges up to four devices at once, and has two built-in retractable cables (a 67 cm USB-C and a 26 cm USB-C lanyard), so no need to carry extras. A clear TFT screen shows the charge level, and it recharges itself to 50% in 26 minutes.
The Rapid 25K won us over with its all-in-one nature: you slip it into the bag with nothing else, as it already carries two retractable cables, a 67 cm USB-C and a handy little 26 cm USB-C lanyard for earbuds or a phone. Its 25,000 mAh last one to two days of remote work, it recharged our MacBook twice and the phone several times without flagging. The 170W output (across two ports) lets you power a laptop while charging a phone alongside, which is rare at this price. The TFT screen is crisp and gives the remaining level at a glance. A nice surprise on recharging too: 50% back in 26 minutes, you get it going again quickly. Two caveats: at 170W it drains fast and warms up a little, like any battery of this power, and a single port caps at 100W (you need two ports to reach 170W). But for a complete travel bank, cable-self-sufficient and able to recharge a laptop, it offers excellent value.
IV - Solar power banks
Solar energy, in addition to being ecological and sustainable, can also be economical and give your devices extra battery life when you are far from civilisation, such as when hiking. Discover our selection of the best mobile solar batteries.
Blavor Solar Power Bank 20000
See price and availability (36)
A rugged 20,000 mAh outdoor power bank with 4 foldable solar panels, 18 W USB-C, 2 USB-A, a camping light and an IPX5 casing, built for the outdoors.
- Capacity: 20,000 mAh (Li-polymer, about 74 Wh)
- Power: USB-C 18 W (PD) + 2 USB-A (3 devices)
- Solar: 4 foldable panels (up to 1.2 A in the sun)
- Lighting: Multi-mode camping light + flashlight
- 4 foldable panels + USB-C 18 W, IPX5, rugged
The Blavor PN-W12 Pro is a 20,000 mAh power bank built for the outdoors, from a brand that has specialised in solar chargers for over ten years. Its distinctive feature: four foldable solar panels that unfold to capture far more sun than a single panel. It offers an 18 W USB-C Power Delivery output, two USB-A ports (three devices at once) and carries a multi-mode camping light plus a flashlight. Its rubberised IPX5 casing resists water, dust and shocks, and it ships with a compass and carabiner to clip onto a backpack. Ideal for hiking, camping or trekking, as long as you treat the solar as a top-up rather than a real charging source.
We tested the Blavor PN-W12 Pro as an adventurer's power bank, and that is exactly where it makes sense. The rubberised casing inspires confidence: it takes knocks, resists water splashes (IPX5) and dust, and the supplied compass and carabiner let you clip it to a bag. Its real signature is the four foldable solar panels: unfolded, they capture far more sun than a single built-in panel (Blavor claims up to 1.2 A, about seven times a single panel). On the wired side, the 18 W USB-C Power Delivery output charges a smartphone at a good speed, and you can power three devices at once (USB-C, 2 USB-A). The multi-mode camping light and the flashlight are handy at camp. Its 20,000 mAh (about 74 Wh) provide roughly four full phone charges and stay under the 100 Wh airline cabin limit. Let us stay honest about the solar, as with all these packs: even with four panels, it takes many hours of full sun for a meaningful top-up, not enough to refill 20,000 mAh in a day (use the USB-C charge, about 6 hours, for a full refill). Seen for what it is, a rugged, generous outdoor pack whose four-panel solar is a serious backup but still a top-up, the Blavor PN-W12 Pro is a reassuring, complete and affordable outdoor companion.
Xtorm XR104
See price and availability (4)
A rugged 10,000 mAh power bank with a built-in solar panel, LED torch and 3 USB outputs, designed for hiking and camping.
- Capacity: 10,000 mAh (Li-polymer)
- Power: 20 W max (USB-C PD, QC 3.0)
- Outputs: 1 USB-C + 2 USB-A (3 devices)
- Recharging: USB-C (3.5 h) or built-in solar panel
- 10,000 mAh with solar panel, LED torch, rugged, 3 outputs
The Xtorm XR104 is a 10,000 mAh outdoor power bank (Xtreme Series) that combines three assets for the wild: a built-in solar panel for backup power, a powerful LED torch and a rugged body that resists knocks and water splashes. It delivers up to 20 W on its USB-C port (Power Delivery) and offers three outputs (1 USB-C, 2 USB-A) to charge several devices at once. Supplied with a carabiner, it clips onto a backpack and follows you anywhere on a hike, a camp or a trek.
We tested the Xtorm XR104 as an adventurer's battery, and that is exactly where it makes sense. The rubberised body inspires confidence: it takes knocks, resists water splashes and dust, and the supplied carabiner lets you clip it onto a backpack to charge while walking. The built-in LED torch is a real bonus at a bivouac, handy for lighting a tent or getting by at night. On wired charging, the 20 W over USB-C top up a smartphone at a good pace, and being able to plug in three devices at once (1 USB-C, 2 USB-A) helps when there are several of you. The 10,000 mAh give around two full phone charges. Let us be honest about the solar: the small built-in panel is a backup to a backup, recovering a few Wh on a sunny day, enough to scrape a little range in a pinch, but not enough to fill the battery in the sun (count on USB-C to top it up fully). Seen for what it is, a solid outdoor battery with solar backup and a torch rather than a true solar charger, the XR104 is a reassuring, versatile companion in the wild.
V - Cheap power banks
Even with a limited budget, it is possible to find excellent external batteries. Some do not compromise on performance or quality despite their price. Here is our top of the most affordable power banks, accessible to all.
Varta Energy 5000
See price and availability (38)
A simple, affordable 5,000 mAh power bank from Varta, with two USB-A ports, a USB-C and enough to charge up to three devices.
- Capacity: 5,000 mAh (Li-polymer)
- Outputs: 2 USB-A + 1 USB-C (up to 15 W)
- Recharging: USB-C or micro-USB (cable included)
- Simultaneous charging: Up to 3 devices
- 5,000 mAh, 2 USB-A + USB-C, 3 devices, budget price
The Varta Power Bank Energy 5000 (reference 57975) is a compact 5,000 mAh power bank with unbeatable value for money. It offers two USB-A ports and a bi-directional USB-C port (input and output), plus a micro-USB input, and can power up to three devices at once, with charging power up to 15 W. Slim and light in its white shell, with four charge LEDs and a cable included, it is ideal as a reliable everyday backup battery without breaking the bank.
We tested the Varta Energy 5000 as what it is: a simple, reliable, cheap backup battery. And on that ground, it ticks the right boxes. The format is slim and light, it slips easily into a pocket or a bag, and the white shell has a decent finish for the price. On connectivity, we like the versatility: two USB-A ports and a bi-directional USB-C let you recharge the battery as well as power devices, and the micro-USB input helps out with older cables. Being able to plug in up to three devices at once is a real bonus when travelling in a group. The 5,000 mAh give around one full phone charge, sometimes a little more on small phones: it is the typical top-up to see out a day. Two honest reservations: the capacity stays modest (do not count on it for a whole weekend without a socket), and the 15 W power suits topping up without working miracles on fast charging. But for a serious backup battery, from a well-known brand and at a very low price, the Varta Energy 5000 is a smart choice.
Intenso XS10000
See price and availability (34)
A compact 10,000 mAh power bank from Intenso, with a bi-directional USB-C port, a USB-A and an LED display, at a budget price.
- Capacity: 10,000 mAh (Li-polymer)
- Outputs: USB-C (in/out) + USB-A
- Power: Up to 15 W (5V / 3.1A total)
- Recharging: USB-C or micro-USB (cable included)
- 10,000 mAh, USB-C in/out + USB-A, 4 LEDs, compact and cheap
The Intenso XS10000 (reference 7313530) is a compact 10,000 mAh power bank with great value for money. In a pocket-sized white shell, it combines a bi-directional USB-C port (input and output), a USB-A port and a micro-USB input, with power up to 15 W. Four LEDs show the charge level, a USB-A to USB-C cable is included, and built-in protections (overcharge, over-discharge, short circuit) ensure worry-free use. Ideal as a reliable everyday backup battery, without breaking the bank.
We tested the Intenso XS10000 as an everyday backup battery, and for the price, it does the job without a false note. The format is genuinely compact: a little brick that fits in the palm and slips into a jacket pocket or a bag without a thought. The white shell has a simple but decent finish, and the four LEDs tell you the remaining level at a glance. On connectivity, we like the bi-directional USB-C port, which both recharges the battery and powers a device, alongside a USB-A port and a micro-USB input for older cables. A USB-A to USB-C cable is included in the box, which saves an extra purchase. The 10,000 mAh give around two full phone charges, enough to see out a busy day or even a light weekend. The 15 W power suits topping up without aiming for ultra-fast charging, and the capacity is honest, right in the average for the format. A well-known German brand, built-in protections and a contained price: for a simple, reliable backup battery, the Intenso XS10000 is a smart choice.
Xiaomi Power Bank 10000 Lite
See price and availability (9)
10000 mAh, 22.5 W fast charging and three ports to charge several devices: the slim, light backup battery at the softest price, by Xiaomi.
- Capacity: 10000 mAh (37 Wh)
- Power: 22.5 W (fast charge)
- Ports: 1 USB-C + 2 USB-A (up to 3 devices)
- Weight: About 192 g
- 22.5 W and 3 ports in a slim body, at a tiny price
The Xiaomi Power Bank 10000mAh 22.5W Lite is a slim, light power bank built for affordable everyday backup. Its 10000 mAh (37 Wh) recharge a smartphone about twice, and its 22.5 W fast charge tops up quickly. With a two-way USB-C port and two USB-A ports, it powers up to three devices at once. At under £13, it is one of the best entry-level batteries around.
The Xiaomi 10000 Lite is pretty much the perfect backup battery for a bag: slim, light (under 200 g) and sold at a ridiculously low price. I adopted it for days in town when I just want to be sure I finish the evening with some charge. It recharges my phone a bit under twice, which fits its 10000 mAh, and the 22.5 W fast charge really makes a difference versus old slow batteries. The three ports are handy when travelling with someone. The USB-C port also recharges it, in about 4.5 hours. Of course, at this price there is no precise display or wireless charging, and the power is meant for phones, not laptops. But to top up day to day without spending much, it is hard to do better.
VI - Wireless power banks
Induction charging technology (also known as IQ or Wireless charging) lets you charge compatible smartphones wirelessly by simply placing them on the charger. In this section, you will find mobile batteries capable of induction charging.
Ugreen Nexode 10000mAh
See price and availability (60)
A magnetic MagSafe-compatible power bank: 10,000 mAh, wireless charging for iPhone, 20W USB-C and a built-in foldable stand, in an ultra-thin design.
- Capacity: 10,000 mAh (~37 Wh)
- Wireless charging: Magnetic MagSafe, 7.5W
- Wired charging: USB-C Power Delivery 20W
- Format: Ultra-thin 19 mm, 220 g, foldable stand
- MagSafe + 20W USB-C, foldable stand, ultra-thin
The Ugreen Nexode is a 10,000 mAh magnetic power bank designed for iPhone: it clips onto the back of the phone via its MagSafe-compatible magnets and charges it wirelessly, cable-free. Wired, its USB-C port delivers 20W Power Delivery for fast charging, and can power two devices at once. Ultra-thin (19 mm) and light (220 g), with a built-in foldable stand and a non-slip silicone surface, it is the ideal backup to slip into a pocket.
We adopted the Ugreen Nexode as a backup battery for the iPhone, and its appeal is obvious the moment you place it on the back of the phone: the MagSafe magnets align it perfectly and hold it firmly, and you can keep using the iPhone while it charges, with no dangling cable. The format is genuinely thin and light, it disappears into a pocket. The little foldable stand is a nice surprise: you prop the phone in landscape to watch a video while it charges. Over USB-C, the 20W charge the iPhone quickly (or a second device at the same time), and also recharge the battery itself. Two honest caveats: wireless charging tops out at 7.5W on iPhone, fine for topping up but not the fastest (use USB-C if you are in a hurry), and it warms up a little during heavy magnetic charging. There is no screen, just LED level indicators. But at this price, to keep an iPhone topped up wirelessly day to day, the Nexode offers excellent value.
Anker MagGo Power Bank
See price and availability (44)
10000mAh that snap onto the back of an iPhone via MagSafe and charge it wirelessly at 15W: the Anker MagGo magnetic power bank, with a display and a built-in kickstand for upright use.
- Capacity: 10000mAh
- Wireless: MagSafe / Qi2 15W (magnetic)
- Wired: USB-C 27W output, 20W recharge
- Extra: Display + built-in kickstand
- MagSafe 15W wireless charging with kickstand
The Anker MagGo Power Bank is a 10000mAh magnetic power bank designed for MagSafe-compatible iPhones. Qi2 certified, it charges wirelessly at 15W by snapping magnetically to the back of the phone, and also offers a USB-C port up to 27W output (20W to recharge the bank) for fast wired charging. It has a display showing battery level and remaining charge time, plus a foldable kickstand to prop the phone upright while charging.
The MagGo is the power bank that finally made magnetic charging genuinely practical. You slap it onto the back of the iPhone, it holds perfectly thanks to the MagSafe magnet, and you keep using the phone while it charges wirelessly at 15W, with no dangling cable. The built-in kickstand is a handy little touch for propping the iPhone upright, even if the case, wider than the smaller models in the range, does not always sit the phone quite flat in landscape. The display showing the remaining percentage saves you from guessing. Its 10000mAh charge an iPhone about 1.8 times, enough for a good day. To go faster, the USB-C port allows full-speed wired charging, up to 27W. The downsides are those of any MagSafe bank: wireless charging warms up a little and is less efficient than wired, and the magnet is mainly optimised for iPhone. But for an Apple user, it is the perfect on-the-go accessory.
Anker Zolo Magnetic 10000
See price and availability (31)
It sticks to the back of an iPhone, folds out into a video stand and carries its own 30 W USB-C cable: three uses in one 10,000 mAh pack.
- Capacity: 10,000 mAh (37 Wh)
- Charging: Magnetic wireless + 30 W USB-C cable
- Stand: Built-in adjustable kickstand
- Compatibility: MagSafe iPhone and USB-C devices
- Magnetic, video stand and built-in USB-C cable
The Anker Zolo magnetic combines three simple, well-executed ideas. It attaches magnetically to the back of a MagSafe-compatible iPhone for wireless charging, with no cable and no stand needed. Its built-in kickstand folds out to turn the phone into a small tilted screen, perfect on a plane or a desk. And when wireless is not enough, its USB-C cable is built into the casing and delivers up to 30 W, enough to quickly fill a phone or even a tablet. Its 10,000 mAh (37 Wh) give roughly two full phone charges in a format that fits a pocket.
We adopted this magnetic Zolo for train journeys, and it is a cleverer object than it looks. The magnetism is firm: placed on the back of an iPhone 16, it holds without sliding, even when handling the phone one-handed. The real surprise is the kickstand. Once folded out, it tilts the phone to a comfortable angle, turning a train tray or an aeroplane armrest into a small viewing station. We used it far more often than expected. On charging, wireless remains what it is, convenient but slow and a little warm over long sessions. That is where the built-in USB-C cable earns its place: plugged in, it climbs to 30 W and charges an iPhone far faster, or rescues an iPad. Not having to carry an extra cord is, once again, the kind of detail that counts when travelling. Two caveats: 10,000 mAh is about two phone charges, so it is more a day companion than a weekend reserve, and wireless charging draws more than wired, so do not count on two full charges if you only use it magnetically. For urban and light nomadic use, it is a success.
Ugreen MagFlow 10000mAh
See price and availability (23)
The fastest MagSafe charging: 10000mAh, Qi2 25W magnetic wireless charging for iPhone, a built-in USB-C cable and a digital display.
- Capacity: 10,000 mAh (37 Wh)
- Wireless charging: Magnetic Qi2 25W (MagSafe)
- Wired charging: USB-C PD 30W, built-in cable
- Weight: 250 g, digital display
- Qi2 25W wireless, built-in cable, display
The Ugreen MagFlow 10000mAh finally brings genuinely fast wireless charging to the MagSafe world: thanks to the Qi2 standard, its magnetic charging reaches 25W, against 7.5W on most magnetic batteries. It charges an iPhone 17 Pro Max to 50% in 38 minutes, cable-free. A built-in USB-C cable (30W, doubling as a strap) and a USB-C port complete the 3-in-1 design, and a digital display shows the level. Compact (250 g) and under 100 Wh, it is allowed in the aircraft cabin: the most complete magnetic battery.
We adopted the Ugreen MagFlow as our main MagSafe battery, and the difference from 7.5W models is obvious: at 25W wireless, the iPhone charges genuinely fast, you get back half the battery in a short half hour without plugging in a single cable. The magnets hold firmly, you keep the phone in hand without it sliding. The built-in USB-C cable is well thought out, it also acts as a strap and saves carrying a cable, and the digital display lets you track the level at a glance. The format stays reasonable, it slips into a pocket. Two small caveats: full Qi2 25W charging is only available on recent iPhone 16 and 17 (iOS 26), older models staying at 15W, which is already good, and it warms up a little during fast charging, like any battery of this type. But for the fastest magnetic wireless charging, with cable and display, it is currently one of the best on the market.
VII - Multi-function devices
Below you will find devices whose primary role isn't to act as an external battery for charging your devices, but which, in addition to their main function, are also able to do so. Here is our selection of these highly versatile devices.
JBL Charge 5
See price and availability (71)
A sure bet among JBL's portable speakers: 40W of powerful sound, IP67 waterproofing, 20 hours of battery life and a power bank function to charge your phone.
- Sound power: 40 W (30 W + 2 x 5 W)
- Battery life: 20 h (7500 mAh battery)
- Functions: Speaker, USB-A power bank (10 W), IP67 waterproof
- Connectivity: Bluetooth 5.1, PartyBoost
- 40W sound, IP67, 20h and USB phone charging
The JBL Charge 5 is a portable Bluetooth speaker that has become a benchmark: rich 40W sound (racetrack driver and two tweeters), 20 hours of battery life and IP67 waterproofing that shrugs off water and dust. Its 7500 mAh battery doubles as a power bank, via a USB-A port, to charge a phone during the day. With Bluetooth 5.1 and PartyBoost, it pairs with other compatible JBL speakers for bigger sound.
We took the Charge 5 everywhere, and that is exactly what it is built for. On a terrace or by the pool, the sound really carries: the 40W fill a garden without distorting, with bass that is genuinely present for a speaker this size. The IP67 rating reassured us more than once, between a surprise shower while camping and splashes at the water's edge, it takes it all in stride. Battery life lives up to the claim: on a full day out we never had to recharge it, and the 20 hours are realistic at a reasonable volume. The little extra that places it among multi-function devices is the USB-A port that rescues a dead smartphone, very handy on a hike or at a festival. Two honest downsides: there is no aux input and no microphone for calls, and at full volume the battery drains a bit faster. But for generous sound, a rugged build and real portable versatility, the Charge 5 remains a safe bet.
JBL Xtreme 3
See price and availability (39)
The most powerful speaker in JBL's portable line-up: 100W of immersive sound, IP67 waterproofing, 15h of battery life, a shoulder strap and a power bank function.
- Sound power: 100 W (4 speakers)
- Battery life: 15 h (10000 mAh battery)
- Functions: Speaker, USB power bank (17.5 W), IP67 waterproof
- Connectivity: Bluetooth 5.1, PartyBoost
- Immersive 100W sound, IP67, strap and power bank
The JBL Xtreme 3 is the heavyweight of the brand's portable Bluetooth speakers: 100W of power driven by four speakers and two passive radiators, for immersive sound and deep bass. IP67 waterproof, it offers 15 hours of battery life and a large battery that also works as a power bank via a USB port. Supplied with a rugged shoulder strap featuring a bottle opener, it is built for parties, the beach and big outdoor gatherings.
When you bring out the Xtreme 3, you do not go unnoticed, and that is the whole point. With its 100W and four speakers, it puts out full sound and bass that moves air: enough to fill an entire garden or a table of twenty people without ever straining. We used it a lot outdoors, and its IP67 rating let us set it down by the pool without worry. The supplied shoulder strap, with its built-in bottle opener, is a real plus for carrying it around, even if at nearly 2 kg you feel it on your shoulder. The USB rescue port saved more than one phone at the end of the evening, which clearly places it among multi-function devices. The 15-hour battery life is decent given the power, but at full volume it drops faster. Two honest downsides: it is bulky and heavy, and its price sits at the top of the range. But for anyone after big, long-lasting portable sound, the Xtreme 3 delivers on its promises.
JBL Charge 6
See price and availability (32)
JBL's new portable benchmark: AI-boosted sound, upgraded IP68 waterproofing, 28 hours of battery life, a removable strap and a USB-C power bank function.
- Sound power: 45 W RMS (up to 180 W peak, AI Boost)
- Battery life: 28 h (24 h + 4 h AI Boost)
- Functions: Speaker, USB-C power bank (10 W), IP68 waterproof
- Connectivity: Bluetooth 5.4, Auracast
- IP68, 28h, Auracast, removable strap and USB-C power bank
The JBL Charge 6 succeeds the famous Charge 5 and raises the bar across the board: upgraded IP68 waterproofing, 28 hours of battery life (24h + 4h thanks to AI Sound Boost), Bluetooth 5.4 with Auracast and a new removable carry strap. Its USB-C port doubles as a power bank output to charge a smartphone, and also accepts high-quality wired audio. A true multi-function device, built for the outdoors.
After years of faithful service from the Charge 5, we were watching the Charge 6 closely, and JBL delivered. The sound has grown fuller: AI Sound Boost pushes peak power and you feel more generous bass, a more open presentation at higher volumes. On a day at the beach, the IP68 rating (now protected against prolonged submersion) reassured us, and the removable strap, the real novelty, is a game changer for hanging it on a bag or a branch. The 28-hour battery life is comfortable: you get through a camping weekend with little recharging. The power bank function moves to USB-C, more universal, and the same port also serves as a quality wired audio input. On connectivity, Auracast replaces PartyBoost and broadcasts to a near-unlimited number of compatible speakers. Two reservations: the price creeps up compared with the Charge 5, and there is still no microphone for calls. But as a multi-function portable speaker, the Charge 6 is a fine evolution.
Olight Olantern Classic 2 Pro
See price and availability (4)
A retro-style camping lantern, dimmable from 10 to 300 lm, controlled by app, with a genuine 18W power bank function to recharge your devices.
- Brightness: 10-300 lm (warm white + orange)
- Runtime: up to 220 h
- Power bank: 18 W (USB-C + USB-A)
- Control: App + rotary knob
- Retro dimmable lantern and 18W power bank, app-controlled
The Olight Olantern Classic 2 Pro is a retro-style LED camping lantern built around versatility. Its light dims steplessly from 10 to 300 lumens, from warm white to ambient orange, via a rotary knob or the smartphone app (battery level, timer, sleep mode). Its large built-in battery provides up to 220 hours of runtime and also works as an 18W power bank, with USB-C and USB-A outputs to charge a phone. A true multi-function device for camping and power cuts.
We have a real soft spot for this Olantern Classic 2 Pro, as much for its looks as for what it can do. The retro copper style looks great on a camping table or a shelf at home, and the light is superb: the knob lets you dial in the mood precisely, from warm white for reading to soft orange for an evening. App control is a clever touch, you check the battery level and set a timer without getting up. What places it among multi-function devices is its power bank function: with USB-C and USB-A outputs up to 18W, it recharged our phones during a weekend out in nature, a real plus when you are far from an outlet. Runtime is impressive in eco mode, holding several nights without a recharge. Two honest reservations: it is fairly heavy for a lantern, and its price sits above basic camping lights. But for the quality of light, the style and the dual lighting-battery role, it is well worth a look.
VIII - Related questions
How do you choose an external battery? First, take stock of your needs. Does the power bank need to be compact enough to fit in your pocket, or does capacity matter more than size? How many times do you want to recharge your smartphone (check its capacity in mAh)? Do you need fast charging? Finally, factor in your budget, and with our help you'll know which external battery to choose.
All external batteries recharge via a simple USB port. Whether it uses a micro-USB cable or a USB-C cable (rarer), any power bank can be recharged on the same wall charger as your smartphone, or on any device with a USB port, such as your computer. This simplicity explains the great success of this type of battery.
External batteries are most often made up of one or more cells (often 18650-type cells) wired in parallel, with a sophisticated electronic circuit (managing charge and discharge, with integrated protection circuits), all enclosed in a protective shell. Their characteristics generally depend on the number of cells and the electronic circuit.
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