Sunslice Gravity 5
(1 reviews)
At just 125 grams for 5000mAh, the Sunslice Gravity 5 slips into any pocket to top up your smartphone while hiking or travelling light.
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Characteristics
- Capacity: 5000mAh, or 18.5Wh
- Weight: 125g (98 x 64 x 14 mm)
- Output: 2x USB-A, 10W combined
- Input: USB-C or Micro-USB, 10W
- Ultra-light (125g), works with Sunslice solar panels
Detailed overview: Sunslice Gravity 5
The Gravity 5 is the smallest and lightest power bank in the Sunslice Gravity lineup. At 125 grams and 98 x 64 x 14 mm, it slips into a trouser pocket, bum bag or wash bag without anyone noticing, making it an easy travel companion for keeping a smartphone topped up without extra bulk.
Its 5000mAh (18.5Wh) capacity gives most current smartphones a near-full charge, or two partial top-ups depending on the model. The two USB-A output ports deliver up to 10W combined (5V/2A per port), enough to charge a phone and a pair of earbuds or a smartwatch at the same time. The battery itself recharges over either a USB-C or a Micro-USB port, both capped at 10W, with a USB-A to USB-C cable included in the box.
Four LED indicators show remaining charge at a glance, with no screen or extra buttons to worry about. The Gravity 5 skips pass-through charging (charging the bank while it powers a device), a reasonable trade-off for such a compact shape. It is however designed to pair with Sunslice's foldable Fusion Flex solar panels, letting you store sunlight while hiking, camping or living out of a van, then use it to power your devices after dark.
Against the many compact power banks on the market, the Gravity 5 leans on simplicity and low weight rather than chasing extra watts: no ultra-fast charging, no LCD screen, just a thin, light and reliable object backed by a two-year warranty from Sunslice, a brand built around nomadic solar energy. For discreet everyday use or a no-fuss travel top-up, it's a sensible pick, as long as you don't expect the speed of a flagship fast-charging power bank.
Full specifications
Detailed characteristics
Battery
| Rated capacity?Cell capacity in milliamp-hours, as stated by the manufacturer. | 5000 mAh |
|---|---|
| Actual energy?Actual stored energy in watt-hours; what matters for runtime and air travel (100 Wh cabin limit). | 18.5 Wh |
| Battery chemistry?Cell type; LFP lasts longer, Li-ion/LiPo is lighter. | Li-ion |
Output (device charging)
| Max output power?Maximum total power delivered; above 60 W it can charge a laptop. | 10 W |
|---|---|
| USB-A ports?Number of USB-A ports and maximum power. | 2 × 10 W |
| Wireless charging (Qi)?Inductive charging of a phone placed on top, and its power. | No |
| Magnetic attachment (MagSafe)?Attaches magnetically to the back of a MagSafe-compatible iPhone. | No |
Recharging the power bank
| Recharge power (input)?Maximum input power to recharge the power bank; higher means faster. | 10 W |
|---|---|
| Pass-through charging?Can charge a device while being recharged itself (pass-through). | No |
Cable and interface
| Built-in cable?A cable is permanently attached to the power bank (nothing extra to carry). | No |
|---|---|
| Retractable cable?The built-in cable retracts into the housing. | No |
| Cable included?A cable is included in the box. | Yes |
| Display?Level display: simple LED indicators or a digital screen (%, watts). | LED indicators |
| LED light?Built-in LED torch / light. | No |
Form factor
| Weight?Weight of the power bank, in grams. | 125 g |
|---|---|
| Dimensions (L × W × D)?Length × width × depth, in millimetres. | 98 × 64 × 14 mm |
Availability and warranty
| Warranty?Length of the manufacturer's warranty. | 2 years |
|---|
⚡ How many charges with this power bank?
With 18.5 Wh of capacity, the Sunslice Gravity 5 power bank recharges iPhone 16 ~1 times or Samsung Galaxy S25 ~0.9 times.
| Smartphone | Charges |
|---|---|
| iPhone 13 | ~1.1 |
| iPhone 16 | ~1 |
| Samsung Galaxy S25 Ultra | ~0.7 |
| iPhone 18 Pro Max | ~0.6 |
| Tablet / console | Charges |
|---|---|
| PlayStation Portal | ~0.8 |
| Retroid Pocket 5 | ~0.7 |
| Steam Frame | ~0.6 |
| iPad Pro | ~0.4 |
Rough estimate: real-world losses (conversion, cable, heat) are around 25 to 35%.
Comparison
Under £30, the Gravity 5 goes up against several lightweight power banks popular for their low weight, in searches like "Gravity 5 vs Anker Nano" or "best lightweight 5000mAh power bank". Here's how it compares to three compact 5000mAh alternatives: the Anker Nano A1653, a benchmark for fast charging; the Xiaomi Ultra Slim 5000, one of the thinnest on the market; and the Varta Energy 5000, a cheaper safe bet.
| Criterion | Sunslice Gravity 5 | Anker Nano A1653 | Xiaomi Ultra Slim 5000 | Varta Energy 5000 |
|---|---|---|---|---|
| Capacity | 5000mAh (18.5Wh) | 5000mAh (18Wh) | 5000mAh | 5000mAh |
| Output power | 10W (2x USB-A) | 22.5W (USB-C, PD) | 20W (USB-C) | 15W |
| Weight | 125g | ≈ 100g | ≈ 93g | ≈ 150g |
| Pass-through | No | Yes | Not stated | Not stated |
| Works with solar panels | Yes (Sunslice ecosystem) | No | No | No |
| Observed price | £24.94 | ≈ £26 | ≈ £18 | ≈ £13 |
In short, the Anker Nano A1653 wins on charging speed thanks to its 22.5W USB-C port and pass-through function, and the Xiaomi Ultra Slim stays thinner on the scale. The Gravity 5 stands out with its dual USB-C and Micro-USB input, handy while travelling, and above all its direct compatibility with Sunslice's foldable solar panels, a genuine plus for hikers and campers far from a mains socket.
Our tester's review: Guillaume Hoarau
We slipped the Gravity 5 into a jacket pocket for a weekend in the city and genuinely forgot it was there, it's that light: 125 grams, barely more than a small pack of tissues. It gave our phone a near-full charge in one go without ever getting warm. A nice touch: it recharges over either USB-C or Micro-USB, handy when travelling with friends who don't carry the same cable. The real catch is that both USB-A ports share just 10W combined, so don't expect Power Delivery speeds, and there's no pass-through charging while it's topping itself up. For a discreet backup battery to toss in a handbag or a travel pouch, it does exactly what's asked of it, nothing more. Keep it as a top-up companion rather than an emergency fast charger.
Frequently asked questions: Sunslice Gravity 5
Yes, at 18.5Wh it's well under the 100Wh cabin baggage limit set by the vast majority of airlines, so no special permission is needed.
With 5000mAh (18.5Wh), it gives most smartphones a near-full charge, sometimes two partial charges depending on the model and conversion losses.
It recharges via either its USB-C or its Micro-USB port, both capped at 10W; expect several hours with a standard mains charger, which isn't included.
Yes, it's designed to recharge with Sunslice's foldable Fusion Flex solar panels, handy for hiking or camping away from a mains socket.
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Published on 30/08/2026