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Best Batteries is at once an online shop, a buying guide and a product review site. Our team of testers has selected the best products in their category for you. Our goal is to help you make your choice, as impartially and thoroughly as possible. Enjoy your visit!

Other batteries

This section of our shop brings together batteries that don't belong to any other section on our site. Discover the best among these batteries.

It can sometimes be difficult to find your way around, given the huge number of batteries for a huge number of electronic or electrical devices. Whether it's smartphones or tablets, video cams or digital cameras, power tools, drones or handheld consoles, a quality battery can make all the difference. We are pleased to present, in this section of our online shop, a selection of replacement batteries for your devices. All of very good quality, some are original batteries made by the device's own brand, others are batteries from other brands that are compatible with your range of devices. Be sure to check the original numbers or models of your batteries if you choose to buy replacement ones, to be certain of compatibility.
Here are the ones we have chosen for you, most of which are for popular, sought-after devices. We will regularly update this category of our site to add other replacement batteries or batteries that don't find their place on other pages of our e-commerce site. · 56 products

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I - Smartphone batteries

Smartphones are becoming more and more powerful, and they require high-performance batteries. Whether your phone battery is dead or you want a spare, it may be worth ordering a new one. We present here the most popular ones.
Note: If you are looking for an external battery for your smartphone, you will find them in our "Power banks" section ;)

Summary
Description

SiGN iPhone 11 battery kit

£24.79 (25)

Replacement battery for the iPhone 11. Restore your device's original runtime when the battery gets tired.

Capacity: 3110 mAh
Compatibility: iPhone 11
Type: Lithium-ion
Use: Kit with fitting tools
Original runtime restored, iPhone 11

This replacement battery compatible with the iPhone 11 lets you restore your device's original runtime when the fitted battery weakens. Supplied as a kit with the removal tools needed for an easy replacement. Capacity of 3110 mAh. Check your original battery reference and the exact model of your device before buying to ensure compatibility.

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Out of stock

Summary
Description

Samsung Galaxy S22 battery

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Replacement battery for the Samsung Galaxy S22 (S901B). Restore your device's original runtime when the battery gets tired.

Capacity: 3700 mAh
Compatibility: Galaxy S22
Type: Lithium-ion
Use: Replacement battery
Original runtime restored, Galaxy S22

This replacement battery compatible with the Samsung Galaxy S22 (S901B) lets you restore your device's original runtime when the fitted battery weakens. Capacity of 3700 mAh. Check your original battery reference and the exact model of your device before buying to ensure compatibility.

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Summary
Description

SiGN iPhone 12 battery kit

£21.37 (7)

Replacement battery for the iPhone 12 and 12 Pro. Restore your device's original runtime when the battery gets tired.

Capacity: 2815 mAh
Compatibility: iPhone 12
Type: Lithium-ion
Use: Kit with fitting tools
Original runtime restored, iPhone 12

This replacement battery compatible with the iPhone 12 and 12 Pro lets you restore your device's original runtime when the fitted battery weakens. Supplied as a kit with the removal tools needed for an easy replacement. Capacity of 2815 mAh. Check your original battery reference and the exact model of your device before buying to ensure compatibility.

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Out of stock

Samsung Galaxy S24 EB-BS921ABY 4000 mAh battery

Summary
Description

Samsung Galaxy S24 battery

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Your Galaxy S24 drains too fast? A new EB-BS921ABY 4000 mAh battery restores its full runtime, easy to fit yourself at a low price.

Compatibility: Samsung Galaxy S24 (SM-S921B)
Reference: EB-BS921ABY
Capacity: 4000 mAh
Supplied with: New battery + tools
Restores the Galaxy S24's original runtime

This replacement battery for Samsung Galaxy S24 (reference EB-BS921ABY) has a 4000 mAh capacity, identical to the original. It restores your smartphone's fresh runtime when the battery tyres after many charge cycles. Supplied new, often with removal tools, it can be fitted yourself or by a repairer. An affordable, eco-friendly way to extend your Galaxy S24's life.

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II - Video cam batteries

Whether it is for your camcorder, action cam, or surveillance camera, its battery life is a crucial point not to be neglected. It would be a shame to miss an event just because you don't have a battery left. Here are a few of them.

Summary
Description

GoPro Enduro battery

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Replacement battery for the GoPro HERO 12, HERO 11 and HERO 10 Black cameras. Restore your device's original runtime when the battery gets tired.

Capacity: 1720 mAh
Compatibility: GoPro HERO
Type: Lithium-ion
Use: Replacement battery
Original runtime restored, GoPro HERO

This replacement battery compatible with the GoPro HERO 12, HERO 11 and HERO 10 Black cameras lets you restore your device's original runtime when the fitted battery weakens. Capacity of 1720 mAh. Check your original battery reference and the exact model of your device before buying to ensure compatibility.

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Summary
Description

DJI Extreme battery

See price and availability (9)

Replacement battery for the DJI Osmo Action 3, Action 4 and Action 5 Pro cameras. Restore your device's original runtime when the battery gets tired.

Capacity: 1950 mAh
Compatibility: DJI Osmo Action
Type: Lithium-ion
Use: Replacement battery
Original runtime restored, DJI Osmo Action

This replacement battery compatible with the DJI Osmo Action 3, Action 4 and Action 5 Pro cameras lets you restore your device's original runtime when the fitted battery weakens. Capacity of 1950 mAh. Check your original battery reference and the exact model of your device before buying to ensure compatibility.

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Summary
Description

Insta360 1800 mAh battery

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Replacement battery for the Insta360 X3 360 camera. Restore your device's original runtime when the battery gets tired.

Capacity: 1800 mAh
Compatibility: Insta360 X3
Type: Lithium-ion
Use: Replacement battery
Original runtime restored, Insta360 X3

This replacement battery compatible with the Insta360 X3 360 camera lets you restore your device's original runtime when the fitted battery weakens. Capacity of 1800 mAh. Check your original battery reference and the exact model of your device before buying to ensure compatibility.

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Summary
Description

Insta360 2290 mAh battery

See price and availability (5)

Replacement battery for the Insta360 X4 360 camera. Restore your device's original runtime when the battery gets tired.

Capacity: 2290 mAh
Compatibility: Insta360 X4
Type: Lithium-ion
Use: Replacement battery
Original runtime restored, Insta360 X4

This replacement battery compatible with the Insta360 X4 360 camera lets you restore your device's original runtime when the fitted battery weakens. Capacity of 2290 mAh. Check your original battery reference and the exact model of your device before buying to ensure compatibility.

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DJI Mini 4 Pro Intelligent Flight Battery

Summary
Description

DJI Mini 4 Pro battery

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Double, triple your flight time: the DJI Mini 4 Pro intelligent battery offers up to 34 minutes in the air, with management and self-discharge to preserve its lifespan.

Compatibility: DJI Mini 4 Pro drone
Capacity: 2590 mAh
Runtime: Up to 34 min flight
Management: Intelligent + self-discharge
Genuine battery, up to 34 min flight per charge

The DJI Mini 4 Pro Intelligent Flight Battery is the drone's genuine battery. With a 2590 mAh capacity, it offers up to 34 minutes of flight per charge. Its intelligent electronic management monitors cell voltage and temperature, and it automatically self-discharges after a few days of inactivity to preserve its lifespan. Essential as a spare battery, it lets you fly back to back without waiting to recharge in the field.

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Summary
Description

GoPro Enduro 2 battery

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Film longer with your GoPro Hero 13: the official Enduro 2 battery offers better runtime and optimised performance, even in deep cold.

Compatibility: GoPro Hero 13 Black
Type: Enduro 2 battery (official)
Strength: Optimised performance in cold weather
Use: Spare battery
Official battery, more runtime and cold endurance

The GoPro Enduro 2 battery is the official accessory designed for the GoPro Hero 13 Black. Optimised to deliver more runtime and better performance in tough conditions, especially cold weather, it is essential as a spare battery so you never interrupt your filming sessions. Having several batteries is the best way to film all day without depending on a socket, when hiking, travelling or during sports activities.

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III - Camera batteries

There is a very wide range of digital cameras on the market, and therefore a very large number of different batteries to power them, when they do not use standard batteries. We offer these quality batteries for the most popular cameras.

Sony NP-FW50

See price and availability (49)

Uncompromised runtime for your Sony mirrorless: the genuine NP-FW50 powers the Alpha A6000, A7 and RX10 with the brand's reliability.

Voltage: 7.2V
Capacity: 1020 mAh
Type: Lithium-ion (genuine Sony)
Compatibility: Alpha A6000/A6400/A7 II, RX10...
Genuine Sony battery, perfect recognition and safety

The Sony NP-FW50 is the genuine lithium-ion battery for many Sony mirrorless cameras. With a 7.2V voltage and a 1020 mAh capacity, it powers the APS-C Alpha series (A6000, A6100, A6300, A6400, A6500, A5100) and full-frame (A7, A7 II, A7R II, A7S II), as well as the RX10 II, III and IV and the ZV-E10. As a genuine Sony battery, it guarantees perfect recognition by the body, an accurate level display and optimal safety. The essential second battery for shooting days or replacing a tired battery.

In-depth reviewRead our full review → 4.3/5 The NP-FW50 equipped the majority of Sony mirrorless cameras for years, and it still keeps its promise today. Its real capacity comes close to 95% of its rated 1020mAh, a solid result that puts it ahead of several compatible rivals tested under the same conditions. As a genuine Sony battery, it's recognised without reservation by every compatible body: precise display of the remaining percentage, no warning message, no crippled function. Its compatibility spans a wide range, from APS-C mirrorless bodies to the early full-frame models, as well as the RX10 expert compacts. One point deserves attention: this format gave way to the NP-FZ100 on every Sony body released from 2017 onwards, and the two are not interchangeable, and Sony publishes no official cycle-count figure for this reference. For anyone who already owns a compatible body, the official NP-FW50 remains the safest option for a spare or a replacement.

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Canon LP-E17

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Never miss a shot for lack of battery: the genuine Canon LP-E17 powers your EOS R mirrorless and DSLRs with the brand's reliability.

Voltage: 7.2V
Capacity: 1040 mAh
Type: Lithium-ion (genuine Canon)
Compatibility: EOS R8/R10/R50/RP, 250D, 850D...
Genuine Canon battery, perfect compatibility and safety

The Canon LP-E17 is the genuine lithium-ion battery for Canon EOS mid-range cameras. With a 7.2V voltage and a 1040 mAh capacity, it powers many mirrorless and DSLR bodies: EOS R8, R10, R50, RP, as well as the EOS 250D, 850D, 77D, 800D and the M6 Mark II mirrorless. As a genuine Canon battery, it guarantees perfect compatibility and safety, with no error message or feature limitation. Ideal as a second battery to extend your photo and video sessions, or to replace an ageing battery that holds less and less charge.

In-depth reviewRead our full review → 4.1/5 The genuine LP-E17 keeps a simple promise: 7.5Wh that matches the rating printed on the cell, seamless compatibility across 14 Canon bodies and three mounts since 2015, and no known structural fault on the genuine part, at a time when Canon itself warns about real risks on some non-genuine references. On optical-viewfinder DSLRs, battery life climbs to 800, even 1070 shots per charge, comfortably enough for a full day's shooting. Its limit is size: on the full-frame EOS RP and R8, electronic-viewfinder battery life drops to 210 and 220 shots, well behind bodies fitted with the LP-E6NH, which packs over twice the energy. Charging stays standard (2 to 2.5 hours) with no fast option, and the price on the shelf runs well above compatible references. A safe, honestly limited buy, more compelling on a DSLR than on a full-frame body used continuously.

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Sony NP-FZ100 battery

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Replacement battery for Sony Alpha A7 IV, A7 III, A7R V, A9 II, ZV-E1 and FX3. Restore your device's original runtime when the battery gets tired.

Capacity: 2280 mAh
Compatibility: Sony Alpha
Type: Lithium-ion
Use: Replacement battery
Original runtime restored, Sony Alpha

This replacement battery compatible with Sony Alpha A7 IV, A7 III, A7R V, A9 II, ZV-E1 and FX3 lets you restore your device's original runtime when the fitted battery weakens. Capacity of 2280 mAh. Check your original battery reference and the exact model of your device before buying to ensure compatibility.

In-depth reviewRead our full review → 4.5/5 The NP-FZ100 succeeded the NP-FW50 in 2017 with a sharp jump in capacity, and it still keeps that promise years on. Its real capacity reaches up to 99% of its 2280mAh rated value in a comparison covering thirteen batteries, a result that puts it ahead of several newer compatible rivals that advertise a higher rated figure yet actually deliver less than the original Sony cell. As the official battery, it's recognised without reservation by every compatible body, a line-up that covers nearly the whole of Sony's current high-end Alpha range plus the FX3 video body. Battery life in number of shots varies hugely by body, from 430 to over 800 shots under the CIPA standard. Sony doesn't publish an official cycle-count figure, but the available feedback suggests a useful lifespan of at least several hundred cycles over several years. For any recent Alpha body, the official NP-FZ100 remains the safest choice.

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Summary
Description

Otech LP-E17 battery

See price and availability (18)

Replacement battery for the Canon EOS RP, R8, R10, R50, R100, 250D and 850D. Restore your device's original runtime when the battery gets tired.

Capacity: 1040 mAh
Compatibility: Canon EOS
Type: Lithium-ion
Use: Replacement battery
Original runtime restored, Canon EOS

This replacement battery compatible with the Canon EOS RP, R8, R10, R50, R100, 250D and 850D lets you restore your device's original runtime when the fitted battery weakens. Capacity of 1040 mAh. Check your original battery reference and the exact model of your device before buying to ensure compatibility.

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IV - Console batteries

What could be more frustrating than running out of battery power in the middle of a game on your handheld console? Your original battery is dead? In both cases, choosing a spare battery can be a great idea. Here are a few selected for you.
Note: For some consoles like the Nintendo Switch, the best solution is a powerful external battery, like some on our Power banks page.

Xbox controller rechargeable battery 4800 mWh (x2)

Summary
Description

Xbox Controller battery (x2)

See price and availability (20)

No more disposable batteries: this pack of 2 rechargeable batteries powers your Xbox controllers continuously, with an LED indicator and cable or dock charging.

Compatibility: Xbox One, Series X/S, Elite
Contents: 2 batteries + covers
Capacity: 4800 mWh per battery
Charging: USB cable or dock, LED indicator
2 rechargeable batteries, no more disposables

This pack of 2 rechargeable batteries replaces the disposable batteries in your Xbox controllers. Each 4800 mWh battery offers great gaming runtime and recharges via USB cable or a charging dock. An LED indicator shows the level (red when charging, green when full), and covers are supplied to fit different controllers. Compatible with Xbox One, Xbox Series X/S and Elite, it is the affordable, eco-friendly way to never run out of batteries mid-game.

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Summary
Description

HUAENG Nintendo DS Lite battery

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Replacement battery for the Nintendo DS Lite console (USG-003 battery). Restore your device's original runtime when the battery gets tired.

Capacity: 2000 mAh
Compatibility: Nintendo DS Lite
Type: Lithium-ion
Use: Replacement battery
Original runtime restored, Nintendo DS Lite

This replacement battery compatible with the Nintendo DS Lite console (USG-003 battery) lets you restore your device's original runtime when the fitted battery weakens. Capacity of 2000 mAh. Check your original battery reference and the exact model of your device before buying to ensure compatibility.

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Summary
Description

Sony Manette PS4 DualShock 4 battery

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Replacement battery for the Sony PS4 DualShock 4 controllers (V4/V5). Restore your device's original runtime when the battery gets tired.

Capacity: 1000 mAh
Compatibility: Manette PS4 DualShock 4
Type: Lithium-ion
Use: Replacement battery
Original runtime restored, Manette PS4 DualShock 4

This replacement battery compatible with the Sony PS4 DualShock 4 controllers (V4/V5) lets you restore your device's original runtime when the fitted battery weakens. Capacity of 1000 mAh. Check your original battery reference and the exact model of your device before buying to ensure compatibility.

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Summary
Description

OSTENT Sony PSP battery

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Replacement battery for the Sony PSP 3000, PSP 3004, PSP Slim & Lite and PSP 2000 consoles. Restore your device's original runtime when the battery gets tired.

Capacity: 1200 mAh
Compatibility: Sony PSP
Type: Lithium-ion
Use: Replacement battery
Original runtime restored, Sony PSP

This replacement battery compatible with the Sony PSP 3000, PSP 3004, PSP Slim & Lite and PSP 2000 consoles lets you restore your device's original runtime when the fitted battery weakens. Capacity of 1200 mAh. Check your original battery reference and the exact model of your device before buying to ensure compatibility.

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V - Computer batteries

Laptops are becoming more and more powerful, and their batteries are under great strain. After several months of use, the performance of your laptop's battery starts to decline, and its battery life along with it... It can therefore sometimes be worth replacing it.

Summary
Description

Visiodirect Apple MacBook Air laptop battery

See price and availability (14)

Replacement battery for Apple MacBook Air 13 and MacBook Pro 13 (A1466). Restore your device's original runtime when the battery gets tired.

Capacity: 5800 mAh
Compatibility: Apple MacBook Air
Type: Lithium-ion
Use: Replacement battery
Original runtime restored, Apple MacBook Air

This replacement battery compatible with Apple MacBook Air 13 and MacBook Pro 13 (A1466) lets you restore your device's original runtime when the fitted battery weakens. Capacity of 5800 mAh. Check your original battery reference and the exact model of your device before buying to ensure compatibility.

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Green Cell CS03XL battery for HP EliteBook 840 G3

Green Cell HP CS03XL battery

See price and availability (10)

An internal battery in the original format for HP EliteBook G3 machines: 3400 mAh, 39 Wh of Li-polymer, and a two-year manufacturer warranty.

Capacity: 3400 mAh (11.4 V, about 39 Wh)
Fits: HP EliteBook 745, 755, 840, 848 and 850 G3, ZBook 15u G3
Cells: Li-polymer
Safety: Overcharge and deep-discharge protection
Original CS03XL reference, two-year warranty

HP EliteBook 840 G3 laptops and their siblings remain solid business machines, but their internal battery eventually stops lasting the morning. This Green Cell CS03XL matches HP's own part reference, also listed as 800513-001, 800231-141, HSTNN-DB6U and HSTNN-IB6Y: 3400 mAh at 11.4 V, about 39 Wh of Li-polymer, with the expected protection circuits. It covers EliteBook 745, 755, 840, 848 and 850 in G3 form, plus the ZBook 15u G3. Unlike the Inspiron range, the battery here is internal: the base has to come off, a simple job that nonetheless calls for a Torx screwdriver.

The EliteBook 840 G3 is exactly the sort of machine people keep for years: solid chassis, excellent keyboard, still enough performance for office work and the web. Its battery, though, has aged, and that is often the only thing standing in the way of keeping it. This Green Cell fixes precisely that for around thirty pounds, against several hundred for a replacement machine. The flat 39 Wh Li-polymer format is the original one, so you get the starting runtime back, four to six hours depending on use. One important practical difference from the Inspiron range: the battery here is internal. You turn the machine over, remove the Torx screws from the base, disconnect the ribbon cable and swap the pack. Nothing complicated, about fifteen minutes, but it is not a tool-free job. What made us pick this reference over an anonymous pack is the two-year manufacturer warranty and the identified cells: on an internal battery that is hard to inspect, a careful protection circuit matters even more. Do watch the generations, though: the CS03XL targets G3 models, not the CM03XL packs of the G1 and G2.

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Green Cell M5Y1K battery for Dell Inspiron 15

Green Cell Dell M5Y1K battery

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Giving a tired Dell Inspiron 15 another day of runtime without replacing the machine: 2200 mAh, four cells and a two-year warranty.

Capacity: 2200 mAh (14.8 V, about 33 Wh)
Fits: Dell Inspiron 14, 15 and 17 (3000 and 5000 series)
Cells: 4 Li-ion cells
Safety: Overcharge and deep-discharge protection
Original M5Y1K reference, two-year warranty

When the original battery in a Dell Inspiron only lasts an hour, replacing it costs around thirty pounds and saves a laptop that is otherwise perfectly usable. This Green Cell M5Y1K matches Dell's own part reference: 2200 mAh at 14.8 V, about 33 Wh across four Li-ion cells, with electronic protection against overcharge and deep discharge. It targets Inspiron 14, 15 and 17 machines in the 3000 and 5000 series, along with several Vostro and Latitude models. The Polish manufacturer backs it with a two-year warranty, still rare in a market dominated by anonymous sellers.

Replacing a laptop battery is one of the few jobs that genuinely extends a machine's life for a trivial cost, and that is exactly this Green Cell's territory. On a 2015 Inspiron 15 that barely lasted an hour, you get back half a day of office work, enough to push the replacement back by several years. Fitting is done from underneath, the battery being removable on most affected Inspiron models, with no need to open the base. What separates Green Cell from the countless unbranded packs is traceability: identified cells, stated protection circuits, a two-year warranty and a European manufacturer you can actually reach. On a product whose real risk is a cut-price protection board, that is worth the few pounds' difference. Two things to know before ordering. First the capacity: 2200 mAh is the original four-cell format, not a high-capacity pack, so expect no more than the machine had when new. Second the reference: the Inspiron range used several different batteries, so read M5Y1K on the old label before confirming.

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Summary
Description

Avizar Lenovo ThinkPad laptop battery

£40.10 (7)

Replacement battery for Lenovo ThinkPad T470 and T480 laptops. Restore your device's original runtime when the battery gets tired.

Capacity: 4400 mAh
Compatibility: Lenovo ThinkPad
Type: Lithium-ion
Use: Replacement battery
Original runtime restored, Lenovo ThinkPad

This replacement battery compatible with Lenovo ThinkPad T470 and T480 laptops lets you restore your device's original runtime when the fitted battery weakens. Capacity of 4400 mAh. Check your original battery reference and the exact model of your device before buying to ensure compatibility.

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VI - Portable electrical

Power tools, such as drills, sanders or screwdrivers, whatever their brand, need a lot of energy, and generally require batteries of high power and capacity. Here are a few of them.

Ryobi Battery RB18L40 18V One+

See price and availability (8)

Compatible with every tool in the Ryobi One+ range, this genuine RB18L40 battery offers a 4Ah capacity at 18V for constant, reliable power.

Capacity: 4 Ah / 72Wh
Voltage: 18V (Lithium+)
Compatibility: Ryobi One+ tool range
Constant power, fast charging, genuine Ryobi

The RB18L40 is a genuine Ryobi battery, compatible with every cordless tool in the One+ range (drills, drivers, saws, grinders and more). Thanks to Lithium+ technology, it provides constant power throughout the discharge, fast charging and an excellent lifespan. With a 4Ah capacity (72Wh) at 18V, it is equally suited to occasional DIY and more intensive use, and its 4-LED gauge shows the remaining charge at a glance.

In-depth reviewRead our full review → 4.0/5 The RB18L40 keeps its most important promise: it powers over 200 tools across the One+ range without fuss, including older models, an argument few rival ecosystems can match. Its 4-LED indicator reads at a glance, and its 24-month warranty, extendable to 36 by registering the product, is reassuring. No independent measurement of its capacity or actual delivered energy was found, though, leaving buyers to rely on the manufacturer's own figures, and the price seen runs noticeably higher than some comparison sites suggest. A newer generation, the RB1840X, is now found cheaper through the same channels. A pack left flat for months can also refuse to restart, a known lithium-ion limitation rather than a flaw specific to this battery. For anyone who already owns One+ tools, it remains a sound choice; for a first purchase, the generation question is worth asking first.

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Einhell Power X-Change 18V 4.0 Ah battery

Einhell PXC 18V 4.0 Ah Battery

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The original 4 Ah pack that powers a drill, a lawnmower or a 230 V inverter alike, across a range of more than 300 machines.

Capacity: 4.0 Ah, meaning 72 Wh at 18 V
Technology: Lithium-ion, built-in battery management
Compatibility: The whole Power X-Change range
Display: 3-segment LED charge indicator
One battery for more than 300 machines

Power X-Change is the bet Einhell placed more than ten years ago: a single battery for the entire cordless range, from DIY to garden work. This 4.0 Ah reference is its most common format, the one that best balances runtime against weight. At 18 nominal volts it stores 72 watt-hours, enough to run a screwdriver for a good day, a mower over a small lawn, or a 230 V inverter for around twenty minutes at full load. A three-segment LED indicator shows the remaining level at the press of a button, and the internal electronics watch temperature and cell balancing to protect service life.

In-depth reviewRead our full review → 3.8/5 This battery has established itself as a benchmark in its category, and it is easy to see why. The central argument is not technical but economic: as long as you stay with Einhell, one battery does everything. We have watched it move from a drill to a blower and then to a 230 V inverter in the same day, with no adapter and no improvising. On the 4 Ah format specifically, the balance is good. The 2 Ah packs run down too quickly on demanding tools, the 6 Ah ones noticeably weigh down a screwdriver held at arm's length; the 4 Ah sits in between, with 72 watt-hours for a little over six hundred grams. The three-segment LED indicator is basic, but it has the merit of existing and stops you running flat at the wrong moment. Two honest remarks, however. The stated capacity is measured under favourable conditions: on a tool that draws hard, expect closer to ninety per cent of the theoretical figure, which is normal for the sector. And the charger is never supplied with these batteries sold on their own, a detail that catches out hurried buyers: check you already have one, otherwise a starter kit works out cheaper than buying both separately. Beyond that, it is a reliable, thoroughly proven product, and the best ticket into an ecosystem that has grown a great deal.

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Bosch 18V 5Ah compatible battery

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Replacement battery for Bosch Professional 18V cordless tools (GBA, BAT618, BAT620, GSR, GSB, GBH). Restore your device's original runtime when the battery gets tired.

Capacity: 5.0 Ah
Compatibility: Bosch Professional
Type: Li-ion 18V
Use: Replacement battery
Original runtime restored, Bosch Professional

This replacement battery compatible with Bosch Professional 18V cordless tools (GBA, BAT618, BAT620, GSR, GSB, GBH) lets you restore your device's original runtime when the fitted battery weakens. Capacity of 5.0 Ah. Check your original battery reference and the exact model of your device before buying to ensure compatibility.

In-depth reviewRead our full review → 3.0/5 This compatible 18V 5Ah battery targets Bosch Professional tools at a price around 25% below the genuine part, and its mount fits normally across the whole range, with no reported jamming on a recent tool. The real point of attention is real-world capacity: on similar compatible Bosch batteries in the same price bracket, the capacity actually delivered typically sits between 50 and 65% of the figure on the box, a gap far more severe than simple marketing optimism. No independent test exists for this exact reference, but it uses the same generic, unbranded cells as the products compared, and cuts out sooner than a genuine one under heavy load. A handful of negative flags with no detail show up on the retailer's page, too small a sample to draw firm conclusions. For occasional use on a tight budget, it remains an option; for daily professional use, the reliability gap is worth weighing against the money saved.

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Summary
Description

Dyson V8 Battery

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Give your vacuum its breath back: this 21.6V replacement battery restores the runtime and suction power of your tired Dyson V8.

Voltage: 21.6V
Capacity: High (~4600 mAh by version)
Compatibility: Dyson V8 (SV10)
Models: Absolute, Animal, Fluffy, Extra...
Restores original runtime and suction power

This replacement battery for the Dyson V8 vacuum (SV10 series) restores the runtime and suction power of a unit whose original battery is weakening. With a 21.6V voltage and a high capacity (around 4600 mAh depending on version), it is compatible with the Dyson V8 Absolute, Animal, Animal Pro, Fluffy, Extra and Allergy. It clips in place of the original battery, with no special tool for most models, and includes the necessary protections (overcharge, discharge, short-circuit). An economical way to extend your cordless vacuum's life instead of buying a new one.

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VII - Power tool battery inverters

An 18 V tool battery is not just for the drill: plug it into an inverter from the same brand and it becomes a small 230 V source, handy for running a device at the bottom of the garden, on a site with no socket or during a power cut. Here are the models that make use of the batteries you already own.

Ryobi RY18BI150A battery-powered inverter

Ryobi 18V One+ 150W Power Inverter

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A 230 V socket and two USB ports running off any 18V One+ battery: enough to turn a collection of tool batteries into a portable power source.

Output: 150 W continuous, 300 W peak
Sockets: 1 x 230 V outlet + 2 x USB-A 2.4 A
Power source: 18V One+ battery (not included)
Format: 0.76 kg without battery, built-in LED lamp
Mains power anywhere from a tool battery

The RY18BI150A starts from a simple idea: you already own 18V One+ batteries that sit idle between jobs, so you may as well make them produce mains voltage. This small inverter clips onto any battery in the range and delivers 150 watts continuous (300 watts peak) through a standard mains socket, plus 2.4 amps shared across two USB-A ports. A built-in LED lamp completes the package. It weighs 760 grams without a battery, fits in a tool bag and needs no wiring at all: it is the cheapest way to get a working socket miles from anywhere, provided you accept a runtime measured in tens of minutes rather than hours.

The RY18BI150A has to be judged for what it is: not a power station, but an accessory that gets more value out of batteries you have already bought. If you own Ryobi tools, the maths is quick. Around sixty pounds buys a self-contained 230 V socket, against a hundred and thirty to a hundred and seventy for the most modest power station, and you gain two USB ports and a lamp along the way. What strikes you in use is the flexibility rather than the endurance. Runtime is short, there is no hiding it, but it changes in nature the moment you carry two or three batteries: swapping one takes three seconds and involves no waiting, where a flat power station means hours on charge. Anyone already equipped with One+ tools usually owns that reserve without thinking about it, and is only buying the housing here. The other pleasant surprise is the size. Bare, it weighs less than a large bottle of water and slips into the tool box: you grab it at the last moment, which is not how you treat a five kilo station you have to decide to bring along. It is exactly the sort of object that ends up living permanently in the vehicle. Two reservations deserve to be known before buying. First, Ryobi does not state the waveform it produces, and nothing suggests a pure sine wave. We therefore avoid sensitive electronics, medical devices and older switching chargers in particular. Second, the housing gets noticeably hot as soon as you approach 150 watts continuous, a point raised in several independent tests, so it is better left in open air than shut inside a case. With those limits understood, it is an excellent secondary purchase, and arguably the most useful single item in the One+ range for anyone who camps or works away from a socket.

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Einhell TC-ES 18/150/1 Power X-Change inverter

Einhell PXC 150W Power Inverter

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A 230 V socket, a 60 watt USB-C Power Delivery port and a dimmable LED lamp, all running off a Power X-Change battery you already own.

Output: 150 W on the 230 V socket
USB: USB-C Power Delivery 60 W + USB-A 10 W
Power source: 18V Power X-Change battery (not included)
Convenience: Dimmable LED lamp, hook, socket covers
The 60 W USB-C port that charges a laptop directly

Einhell built its entire cordless range around a single battery type, the Power X-Change, and the TC-ES 18/150/1 draws the logical conclusion: it turns any of those batteries into a source of household power. The 230 V socket takes 150 watts, enough to run a laptop, a lamp or a small charger. More importantly, a 60 watt USB-C Power Delivery port, rare on this kind of device, charges a recent laptop directly without going through the mains socket, avoiding a double conversion and gaining runtime. The housing also gets a 10 watt USB-A port, a dimmable LED lamp, a hanging hook and covers over the sockets.

On paper this TC-ES looks like its Ryobi rival: the same 150 watts on the 230 volt socket, the same principle of clipping onto a tool battery. It is the USB ports that open up a gap. Where most of these units make do with two dated USB-A sockets, Einhell fits a 60 watt USB-C Power Delivery port, exactly what a modern laptop expects. The difference is not cosmetic: going through USB-C avoids converting power to 230 volts only to convert it back inside the laptop's power brick, and that double conversion easily costs a quarter of the energy. In practice, with the same 4 Ah battery, you gain twenty to thirty minutes of laptop runtime. The rest is carefully done: covers over the sockets against dust, non-slip surfaces, a built-in hanging hook and a dimmable LED lamp, far more useful than a simple on-off light. Two things to know before buying. This TC-ES version does not charge Power X-Change batteries, it only consumes them; Einhell reserves the charging function for the pricier TE-ES variant. And like any inverter this size, it heats up under sustained load and dislikes confined spaces. At around eighty pounds it costs some twenty more than the Ryobi equivalent, which the USB-C port amply justifies in our view, provided of course that you already own Power X-Change kit.

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Einhell TE-ES 18/150/1 Li-C-Solo power station

Einhell PXC 150W Power Station

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The only one in the range with a 12 V output, a car adapter lead in the box, and the ability to recharge the very battery it runs on, over USB-C.

Output: 150 W at 230 V, 120 W at 12 V
USB: USB-C Power Delivery + USB-A
Recharging: Battery recharged through the USB-C PD input
Power source: 18V Power X-Change battery (not included)
12 V output and recharges its own battery

The TE-ES 18/150/1 is the senior version of Einhell's Power X-Change battery inverter, and the gap with the TC-ES is not about power: both deliver 150 watts through the 230 volt socket. This model adds three things that change how you use it. A 12 volt, 120 watt socket, supplied with its car adapter lead, to run a cool box or a tyre compressor without going through mains voltage. A USB-C Power Delivery port that works both ways: it powers a laptop, but also acts as an input to recharge the battery fitted in the unit. And a continuously dimmable light, usable as a table lamp or a torch.

Einhell sells two 18 volt inverters that look very similar on the spec sheet and must not be confused. The TC-ES, some forty pounds cheaper, simply drains the battery to produce 230 volts. This TE-ES does the same, but adds what was genuinely missing. The 12 volt socket first, with its supplied car adapter lead: it takes 120 watts, enough to run an electric cool box, an inflator or a camping pump without a detour through 230 volts that wastes energy. That is smarter than it sounds, because powering a 12 volt appliance from an 18 volt battery by way of the mains socket loses close to a third of the charge. The charging function next: the USB-C Power Delivery port accepts current in both directions. Plugged into a laptop's USB-C charger or into a power station, it recharges the Power X-Change battery fitted in the unit. Out camping, that means a USB-C solar panel is enough to top up your tool batteries, with no need to carry the Einhell mains charger. The light, finally, dims continuously rather than in two steps, which lets you set it as a night light inside a tent. The rest is as expected: dust covers, a hanging hook, a precise charge indicator. Two reservations. The price, first, approaching a hundred and twenty pounds, above some genuine entry-level power stations that include their own battery. And the logic of the system: with neither battery nor charger in the box, the real bill climbs quickly if you are starting from scratch. For anyone who already owns three or four Power X-Change batteries, though, this is the most complete accessory in the range.

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VIII - Other batteries

From drones to smart speakers, via GPS units or vacuum cleaners, more and more everyday devices need powerful, reliable batteries to function. We present here some device batteries that don't appear in any other category.

Powerextra 4.0Ah 14.4V battery for iRobot Roomba

Powerextra Roomba 500-900 Series Replacement Battery

A simple fix for a Roomba that keeps docking too soon: this 4.0Ah 14.4V battery restores runtime across the entire 500 to 900 series lineup.

Capacity: 4.0 Ah / 4000 mAh (14.4V, NiMH)
Compatibility: Roomba 500, 600, 700, 800, and 900 series
Install: Tool-free, bottom-mounted battery bay
Type: Aftermarket replacement (not an OEM iRobot part)
Restores 1 to 2 years of life to Roomba units over 5 years old

When an older Roomba starts docking after a few minutes of cleaning, the battery is almost always the reason, and replacing it costs a fraction of a new robot. This Powerextra pack is rated at 4.0 Ah (4000 mAh) and 14.4V, matching the original NiMH specification used across the Roomba 500, 600, 700, 800, and 900 series, including widely owned models like the 650, 675, 770, 860, and 980. It slides into the same bay as the factory pack, under the robot rather than behind a cover, and needs no tools to swap.

This Powerextra pack follows the same recipe as the brand's other Roomba batteries, and the pattern in owner reports is consistent: a straightforward swap that brings a sluggish or dock-happy Roomba back to something close to its original runtime, often for a fraction of the price of a new robot. Several owners mention units five years old or more getting a second life after the swap, sometimes running another year or two. The recurring complaint is a smaller share of packs that arrive with reduced capacity or a charge indicator that reads inaccurately for the first cycle or two, which usually settles down after a full charge and discharge. A handful of fitting issues trace back to buyers double-checking the wrong model number rather than a fault in the battery itself. Given the price against a new robot, this remains a sensible first fix for a Roomba that has started cutting its cleaning sessions short.

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Out of stock

Razor scooter replacement battery pair (12V 7Ah)

VICI 12V 7Ah Scooter Battery Set (x2)

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Bring a tired Razor scooter back to life with this matched pair of 12V 7Ah batteries, built to slot straight into the existing wiring, no soldering.

Capacity: 2x 12V 7Ah (24V system)
Compatibility: Razor E300, Pocket Mod, MX350 and similar models
Type: Sealed lead-acid (SLA), maintenance-free
Connectors: 4.8mm spade terminals, reuses existing wiring
Direct swap for the Razor Pocket Mod/MX350 pack

Many Razor electric scooters, including the Pocket Mod and MX350, run on two 12V batteries wired together for a 24V system, and a tired pair is the most common reason a scooter starts crawling instead of cruising. This set includes two 12V 7Ah sealed lead-acid batteries with the same 4.8mm spade connections as the original pack, so no soldering is needed: the existing wiring simply reconnects to the new batteries. A straightforward, affordable fix before considering a full scooter replacement.

We fitted this pair to a Razor Pocket Mod that had been sitting in a shed for over a year, barely holding a charge. Both batteries arrived ready to install, and the 4.8mm spade terminals matched the existing wiring exactly, no soldering or rewiring involved. Within twenty minutes the scooter was back to its original range. These batteries use the same footprint as the standard 6Ah, 7.2Ah and 7.5Ah packs found in many scooters, so they are a sensible swap whenever the original set starts to fade rather than fail outright. The main thing to check beforehand is that your scooter genuinely takes this footprint and terminal type, since a handful of buyers report ordering the wrong size for their specific model. Reviews are mostly positive on fit and performance, with occasional complaints about compatibility when the model wasn't checked first. A solid, budget-friendly way to extend the life of an ageing scooter.

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IX - Related questions

🔋 How to test a smartphone battery?

It is sometimes necessary to know the tricks that can be used to assess your battery's health. If a removable battery only requires a visual inspection, you only need to insert the code *#*#4636#*#* into the "Phone" application of an Android smartphone or use a dedicated app. On an iOS device, you only have to view the "Battery" tab, which informs you about its battery life.

📱 How to replace the iPhone 5 battery?

To change the battery of your iPhone 5:
• Turn off your device,
• Loosen the two screws on either side of the charging connector,
• Disconnect the Home button flex cable,
• After unscrewing the corresponding protective plates, also disconnect the flex cables for the screen, touch panel and camera,
• And finally the battery itself,
• Remove the used battery by heating the back of your iPhone for a few seconds with a hair dryer,
• Install the spare battery,
• Reassemble.

Need help choosing?

Is my battery allowed on a plane? Enter your battery capacity: we tell you if it can go in the cabin and suggest compliant models. Open the calculator → What does my energy really cost? The real cost per stored kWh over the whole lifespan: compare the true value of batteries. Open the calculator →

Other batteries

I - Smartphone batteries

II - Video cam batteries

III - Camera batteries

IV - Console batteries

V - Computer batteries

VI - Portable electrical

VII - Power tool battery inverters

VIII - Other batteries

IX - Related questions

🔋 How to test a smartphone battery?

📱 How to replace the iPhone 5 battery?

Need help choosing?

Further reading on the blog