Xtorm XR104
(4 reviews)
A rugged 10,000 mAh power bank with a built-in solar panel, LED torch and 3 USB outputs, designed for hiking and camping.
Buy at AmazonAs an Amazon Associate I earn from qualifying purchases.
Characteristics
- 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
Detailed overview: Xtorm 10,000 mAh solar power bank
The Xtorm XR104 (Xtreme Series) is a 10,000 mAh power bank built for the outdoors. Where a classic battery stays tucked in a pocket, the XR104 embraces outdoor use: a rubberised body that resists knocks and drops, protection against water splashes and dust, and a carabiner to clip it onto a bag. It also packs a built-in solar panel and an LED torch, two assets designed for hiking, camping and trekking.
On charging, it delivers up to 20 W on its bi-directional USB-C port (Power Delivery) and offers three outputs in total: one USB-C and two USB-A (Quick Charge 3.0), to power up to three devices at once. The total 20 W is then shared between the ports. The USB-C port also recharges the battery itself, in around 3.5 hours.
The built-in solar panel allows a backup top-up when no socket is available. Let us be clear: its small surface generates only a few Wh on a sunny day, enough to gain a little range in an emergency, but not to fill the 10,000 mAh in the sun. It is a useful safety net on an expedition, not a substitute for USB-C charging. The LED torch, for its part, proves very handy for lighting a camp or signalling your presence.
With its 10,000 mAh (around 37 Wh), the XR104 recharges most smartphones about twice, and stays under the 100 Wh airline cabin limit. Compact (165 x 86 mm) and built for tough conditions, it is aimed at those who want a rugged battery, with a torch and solar backup, to head far out with peace of mind.
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. | LiPo |
Output (device charging)
| Max output power?Maximum total power delivered; above 60 W it can charge a laptop. | 20 W |
|---|---|
| USB-C ports?Number of USB-C ports and the fastest port's power. | 1 × 20 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 time 0-100%?Time to fully recharge the power bank. | 210 min |
|---|
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. | 289 g |
|---|
Availability and warranty
| Market launch?Date the model first became available on the European market. Useful to place its generation: technology moves fast in this segment, and a device several years old may be at the end of its commercial life. | April 2021 |
|---|---|
| Warranty?Length of the manufacturer's warranty. | 2 years |
⚡ How many charges with this power bank?
With 37 Wh of capacity, the Xtorm XR104 power bank recharges iPhone 16 ~1.9 times or Samsung Galaxy S25 ~1.7 times.
| Smartphone | Charges |
|---|---|
| iPhone 17 | ~1.9 |
| iPhone 17 Pro | ~1.6 |
| iPhone 18 Pro Max | ~1.2 |
| Xiaomi 17 Pro Max | ~0.9 |
| Tablet / console | Charges |
|---|---|
| Nintendo Switch OLED | ~1.7 |
| iPad mini (A17 Pro) | ~1.4 |
| iPad Pro | ~0.9 |
| Asus ROG Ally | ~0.7 |
Rough estimate: real-world losses (conversion, cable, heat) are around 25 to 35%.
Comparison
At around £43 to £60, the Xtorm XR104 compares with the most sought-after backup solar power banks for the outdoors, through searches such as "best solar power bank for hiking" or "waterproof solar power bank". Here is how it sits against three alternatives: the BigBlue 10000, the BLAVOR 10000 and the Nekteck 10000.
| Criterion | Xtorm XR104 | BigBlue 10000 | BLAVOR 10000 | Nekteck 10000 |
|---|---|---|---|---|
| Capacity | 10,000 mAh | 10,000 mAh | 10,000 mAh | 10,000 mAh |
| Power | 20 W (USB-C PD) | ≈ 15 W | ≈ 18 W | ≈ 15 W |
| Outputs | 1 USB-C + 2 USB-A | 2 USB-A | USB-C + USB-A + Qi | USB-C + 2 USB-A |
| Outdoor assets | Solar, LED torch, carabiner | Solar, torch | Solar, torch, wireless | Solar, torch |
| Observed price | ≈ £51 | ≈ £21 | ≈ £26 | ≈ £21 |
In short, the Xtorm XR104 stands out for its charging power (20 W over USB-C Power Delivery, the highest of the group) and for the brand, known for its rugged accessories. Its three outputs let you charge several devices at once, and the finish inspires confidence in tough conditions. The BigBlue, BLAVOR and Nekteck alternatives are far cheaper and also rely on backup solar and an LED torch, the BLAVOR even adding wireless charging, but with slightly more modest wired power. As on all these batteries, the solar panel remains a backup and not a true recharging source: it is a plus for peace of mind on an expedition, to be chosen above all for its ruggedness and USB power.
Related video
Video: Xtorm 20W PD Waterproof Solar Charger 10.000 mAh (XR105) - Published on 13/05/2021
Our tester's review: Guillaume Hoarau
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.
Frequently asked questions: Xtorm 10,000 mAh solar power bank
Yes, thanks to its built-in solar panel, but it is a backup: it recovers only a few Wh on a sunny day. Handy to scrape some range in a pinch, but to fill it up, USB-C charging (around 3.5 hours) is far better.
Its 10,000 mAh (around 37 Wh) recharge most smartphones about twice, depending on their battery capacity. Enough to see out a weekend of hiking with no socket.
Up to three: one on the USB-C port and two on the USB-A ports. The total 20 W is then shared between the outputs in use.
It resists water splashes, dust and knocks, with a rubberised body built for the outdoors. It is not, however, designed to be submerged.
Yes. At around 37 Wh, it stays well under the 100 Wh cabin limit set by most airlines, with no special authorisation needed.
Need help choosing?
Related articles
Other products in the "Solar power banks" category
Blavor Solar Power Bank 20000
See price (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.
Published on 08/07/2026, updated on 14/08/2026