Sunslice Gravity 10
(1 reviews)
The Sunslice Gravity 10 pairs 10000mAh with 18W fast charging across three ports, built to last through several days of hiking or travel with no mains socket.
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Characteristics
- Capacity: 10000mAh, or 37Wh
- Weight: 220g (135 x 69 x 16 mm)
- Output: 1x USB-C + 2x USB-A, 18W (PD/QC3.0)
- Input: USB-C, 18W
- 3 fast-charge ports, built-in LED torch
Detailed overview: Sunslice Gravity 10
The Gravity 10 sits in the middle of the Sunslice Gravity range, between the compact Gravity 5 and the high-capacity Gravity 20. At 220 grams for 135 x 69 x 16 mm, it still slips easily into a backpack or bag while offering a comfortable energy reserve for two to three full smartphone recharges.
Its 10000mAh (37Wh) capacity is spread across three output ports: a USB-C port with Power Delivery and two USB-A ports with Quick Charge 3.0, each able to deliver up to 18W. In practice, that means taking a compatible smartphone from 0 to 80% in around 40 minutes, and charging up to three devices at once (phone, earbuds, smartwatch) without having to pick a priority. The battery itself recharges via its USB-C port, also capped at 18W, with a USB-A to USB-C cable included in the box.
Four LED indicators show the remaining charge, and a small built-in LED torch comes in handy while camping or during a power cut. Like the rest of the range, the Gravity 10 is designed to pair with Sunslice's foldable Fusion Flex solar panels, a welcome option for hikers and van-lifers who want to store solar energy throughout the day.
Up against rivals like the Anker Zolo 10000 or the Ugreen Nexode 10000mAh, the Gravity 10 doesn't chase the highest wattage on the market, instead betting on a versatile triple port, a built-in torch and the Sunslice solar ecosystem. Backed by a two-year warranty, it's aimed at travellers and hikers heading out for several days without regular access to a mains socket, rather than city users chasing the fastest possible charge.
Full specifications
Detailed characteristics
Battery
| Rated capacity?Cell capacity in milliamp-hours, as stated by the manufacturer. | 10000 mAh |
|---|---|
| Actual energy?Actual stored energy in watt-hours; what matters for runtime and air travel (100 Wh cabin limit). | 37 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. | 18 W |
|---|---|
| USB-C ports?Number of USB-C ports and the fastest port's power. | 1 × 18 W |
| USB-A ports?Number of USB-A ports and maximum power. | 2 × 18 W |
| Fast-charge protocols?Supported fast-charge standards (PD, QC, PPS…); PD/PPS is the most universal. | USB PD, QC 3.0 |
| 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. | 18 W |
|---|
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. | Yes |
Form factor
| Weight?Weight of the power bank, in grams. | 220 g |
|---|---|
| Dimensions (L × W × D)?Length × width × depth, in millimetres. | 135 × 69 × 16 mm |
Availability and warranty
| Warranty?Length of the manufacturer's warranty. | 2 years |
|---|
⚡ How many charges with this power bank?
With 37 Wh of capacity, the Sunslice Gravity 10 power bank recharges iPhone 16 ~1.9 times or Samsung Galaxy S25 ~1.7 times.
| Smartphone | Charges |
|---|---|
| iPhone 12 | ~2.5 |
| Samsung Galaxy S25 | ~1.7 |
| iPhone 16 Pro Max | ~1.5 |
| iPhone 18 Pro Max | ~1.2 |
| Tablet / console | Charges |
|---|---|
| PlayStation Portal | ~1.6 |
| Steam Frame | ~1.2 |
| Asus ROG Ally | ~0.7 |
| Asus ROG Ally X | ~0.3 |
Rough estimate: real-world losses (conversion, cable, heat) are around 25 to 35%.
Comparison
Around £30-35, the Gravity 10 goes up against many 10000mAh power banks popular in searches like "Gravity 10 vs Anker Zolo" or "best fast 10000mAh power bank". Here's how it compares to three alternatives of equal capacity: the Anker Zolo 10000 (30W), more powerful; the Xiaomi Mi Power Bank 3, very affordable; and the Ugreen Nexode 10000mAh, a well-rated all-rounder.
| Criterion | Sunslice Gravity 10 | Anker Zolo 10000 (30W) | Xiaomi Mi Power Bank 3 | Ugreen Nexode 10000mAh |
|---|---|---|---|---|
| Capacity | 10000mAh (37Wh) | 10000mAh (37Wh) | 10000mAh | 10000mAh |
| Output power | 18W (3 ports) | 30W (2x USB-C) | 22.5W | 20W |
| Weight | 220g | ≈ 215g | ≈ 200g | ≈ 220g |
| Built-in LED torch | Yes | No | No | No |
| Works with solar panels | Yes (Sunslice ecosystem) | No | No | No |
| Observed price | £34.94 | ≈ £26 | ≈ £17 | ≈ £28 |
In short, the Anker Zolo 10000 wins on raw power thanks to its two 30W USB-C ports, and the Xiaomi Mi Power Bank 3 remains unbeatable on price. The Gravity 10 stands out with its versatile triple port (1 USB-C and 2 USB-A charging at once), its built-in LED torch and direct compatibility with Sunslice solar panels, a combination built for long stints outdoors rather than the fastest possible charge in the city.
Our tester's review: Guillaume Hoarau
The Gravity 10 came along on a weekend hike where the phone doubles as a GPS and a camera, so the battery drains fast. With 10000mAh, it lasted two full days recharging the phone and a pair of earbuds without ever running dry. The fast charging on the USB-C port really shows: our phone jumped from 15 to 80% during lunch. We also liked being able to charge three devices at once one evening at the hut, each with its own cable. The size stays reasonable (220g) for this capacity, though it's nowhere near as pocketable as the Gravity 5. One small gripe: no screen for an exact percentage, just four LEDs giving a rough estimate, and Sunslice doesn't advertise pass-through charging. A solid capacity-to-weight compromise for multi-day trips away from a socket, with a handy little LED torch thrown in for after dark.
Frequently asked questions: Sunslice Gravity 10
With 10000mAh (37Wh), it can recharge most smartphones around 2 to 3 times depending on their capacity and the losses that come with fast charging.
Yes, at 37Wh it's comfortably under the 100Wh cabin baggage limit accepted by most airlines, with no special paperwork needed.
Its three ports (1 USB-C and 2 USB-A) support PD3.0 and QC3.0, enough to go from 0 to 80% in around 40 minutes on a compatible smartphone.
Yes, its three ports (1 USB-C and 2 USB-A) can power up to three devices simultaneously, handy for a family or a group of hikers.
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Published on 30/08/2026