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25000MAH High-Performance Solar Power Bank

£439.95 £129.95 Save 70%
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NOTICE: This product is one of our bestsellers and is already sold out in our physical store. If the “ADD TO BAG” button still works, it means the product is still in stock online in limited quantities.

Reliable Power Anytime, Anywhere

The 25000mAh High-Performance Solar Power Bank is your go-to backup for charging smartphones, tablets, and USB devices on the go. Whether you're traveling, camping, or working remotely, this power bank provides high-capacity charging with built-in solar recharging for off-grid power when you need it most.

Designed with dual USB outputs, fast charging support, and rugged water-resistant housing, it’s built for performance in outdoor and everyday environments. The integrated solar panel provides an emergency power source wherever sunlight is available.

Key Features

  • Massive 25000mAh Capacity: Charges most smartphones up to 6–8 times on a full charge.
  • Solar Charging Panel: Recharge the device using sunlight—perfect for outdoor adventures and emergencies.
  • Dual USB Output Ports: Charge two devices simultaneously with efficient power distribution.
  • Quick Charge Support: Compatible with fast-charging protocols for faster, more reliable power delivery.
  • Water-Resistant & Shockproof: Built for outdoor use with rugged casing and durable construction.
  • Integrated LED Flashlight: Multi-mode flashlight (steady, SOS, strobe) for nighttime or emergency use.

Specifications

  • Battery Capacity: 25000mAh
  • Input: Micro USB / Solar Panel
  • Output: Dual USB (5V/2.1A + 5V/1A)
  • Charging Time (Wired): 8–10 hours
  • Charging Time (Solar): Varies by sunlight intensity
  • Material: ABS + Silicone + PC
  • Water Resistance: IPX4 (splashproof)
  • Weight: Approx. 1.10 lbs
  • Dimensions: Approx. 6.30 x 3.15 x 0.98 in
  • Extras: LED flashlight with 3 modes

What’s Included

  • 25000mAh High-Performance Solar Power Bank – Quick Charge
  • USB Charging Cable
  • User Manual

Frequently Asked Questions

Q: Can I charge the power bank using a wall charger?
A: Yes, for faster charging, use the included USB cable with a wall charger. Solar charging is intended as a backup.

Q: Is it safe to take on a plane?
A: Yes, 25000mAh is under the carry-on battery limit for most airlines. Always confirm with your airline's guidelines.

Q: Can it charge tablets or only smartphones?
A: It can charge tablets, smartphones, Bluetooth devices, and more via USB.

Q: How durable is it for outdoor use?
A: It features water-resistant and shock-resistant construction, ideal for camping, hiking, or emergency kits.

4.7 (19.342)
Jack Turner

Confirmation came through straight away, then another email when it was sent. Tracking worked and the parcel arrived when they said it would. Nice and straightforward

Benjamin Foster

Nothing missing and no surprises when I opened the parcel. What turned up matched what I’d seen on the website

Hannah Lewis

Had a look around before buying and this was a fair bit cheaper. Arrived as expected too, so happy with that.

Sophie Bennett

I emailed before ordering because I couldn’t work out which option I needed. Got a proper reply explaining the difference, rather than just a link back to the page I’d already read. Might seem a small thing but it helped me decide. Placed the order that evening and I’m happy with what arrived.

Harry Collins

My first order was only a small one a few months back. That went well, so I checked here when I needed something else. Different sort of purchase this time but everything was just as straightforward. Saved me another evening of looking around!

Daniel Thompson

Ordered Sunday evening and it was here Tuesday morning. Wasn’t expecting that, especially ordering over the weekend

Charlotte Brooks

All arrived, all good 😊

Amelia Scott

Entirely my mistake, I picked the wrong option and only noticed when the confirmation came through. Sent an email and they managed to change it before dispatch. Very relieved I didn’t have to deal with returning it afterwards!

George Wilson

Bought it in the sale. Happy with what I paid and it’s what I was after, which is the main thing.

Grace Mitchell

Hadn’t heard of Havenholt before and wasn’t sure about ordering from somewhere new. Only bought one thing to start with. There was a short wait for dispatch, but they kept me updated and everything arrived as described. Happy with the purchase and I’d be comfortable ordering again.

Emily Carter

There was a mix-up with my order so I had to get in touch. Sent a photo over and they explained what would happen next. Didn’t have to keep repeating myself to different people, which I really appreciated. All sorted now

Samuel Reed

They didn’t have the one I wanted when I went into the shop, but suggested checking online. Managed to order it on the website later that day. Would have preferred to take it home there and then, but this worked out fine.

Information

Our policies

Customer Support

Company name: Havenholt LTD

Address: St Andrew's Street, Cambridge CB2 3BJ, United Kingdom

Email: support@havenholt.com

Phone: +44 1223 302601

Customer Service Hours:
Mon–Fri: 09:00 am–05:00 pm
Sat & Sun: Closed

Response time: Within 24 hours

© 2026 Havenholt

High Capacity Solar Power Bank With Foldable Panels For Outdoor Travel Camping Charging Smartphones Tablets And USB Devices