Power banks under £25 are flooding Amazon UK right now, and the timing could not be better for anyone traveling this season or tired of watching their phone battery die mid-afternoon. Five genuinely useful portable chargers have just dropped below the £25 mark, each offering something different depending on whether you prioritize speed, capacity, or convenience.
Key Takeaways
- Five power banks on Amazon UK are currently priced under £25, down from original prices of £25.99 to £39.99.
- Anker PowerCore 10000 is the cheapest at £19.99 and weighs just 180g for easy packing.
- INIU 10000mAh offers the fastest charging at 22.5W for just £18.99, the lowest sale price of the bunch.
- Baseus 20000mAh doubles the capacity at £24.99, ideal for charging laptops or multiple devices.
- Anker Nano 10,000mAh is the smallest at 108g with a flip-out plug covering UK, EU, US, and Japan.
The Best Budget Pick: Anker PowerCore 10000
The Anker PowerCore 10000 hits the sweet spot between price and reliability. At £19.99 down from £29.99, this is the cheapest option on the list and arguably the safest bet if you have never owned a power bank before. It packs 10,000mAh capacity into a compact 9.2 x 6 x 2.2cm frame weighing just 180g, meaning it slides into any backpack pocket without adding bulk. The 12W USB-A output charges most phones at a reasonable pace, though it is not the fastest charger here. Anker’s reputation for durability means you are not gambling on an unknown brand at this price point. If you want a straightforward, no-frills power bank that will actually work when you need it, this is the one.
Fastest Charging Under £25: INIU 10000mAh
The INIU 10000mAh power bank under £25 represents the best value for speed hunters. At £18.99—the lowest sale price across all five—it delivers 22.5W fast charging, which is genuinely quick for a device this cheap. The triple-port setup (USB-C input and output plus USB-A) means you can charge multiple devices simultaneously or use USB-C in both directions depending on your cables. INIU includes a 15-layer SmartProtect safety system to prevent overcharging and short circuits, and the unit is airline-approved, so you can pack it in carry-on luggage without hassle. For the price, the charging speed and multi-device flexibility make this a standout choice, especially if you are juggling a phone and earbuds.
Maximum Capacity: Baseus 20000mAh at £24.99
The Baseus 20000mAh is the only power bank under £25 with double the standard capacity, making it the outlier of this sale. At £24.99, it is also the most expensive option here, but that extra capacity matters if you are charging laptops, tablets, or simply do not want to top up as often. The 65W output with PD 3.0 and QC 3.0 support means it can fast-charge modern devices, and the dual USB-C ports plus one USB-A give you flexibility. The digital display shows remaining battery percentage at a glance, which is convenient for planning. At 420g, it is heavier than the others, but that weight reflects the extra power inside. Choose this if you need genuine all-day backup for multiple devices or plan to be away from outlets for extended periods.
Most Portable: Anker Nano 10,000mAh for £21.99
The Anker Nano 10,000mAh is the lightest power bank under £25 at just 108g, making it the ideal companion for minimalist travelers or anyone who hates feeling weighed down. It delivers 30W output via USB-C, which is fast enough for most modern phones and tablets. What sets it apart is the flip-out plug that works across UK, EU, US, and Japan outlets, eliminating the need to carry separate adapters if you travel internationally. Originally priced at £29.99, the £21.99 sale price makes this a genuine bargain for frequent flyers. The trade-off is that it only has USB-C connectivity, so you will need a USB-C cable or adapter if your devices use older connectors.
Built-In Cables: Zendure 10,000mAh at £22.99
The Zendure 10,000mAh takes a different approach by integrating three cables directly into the unit: USB-C, Lightning, and USB-A. At £22.99 down from £29.99, you are essentially buying a power bank that eliminates cable clutter. The 20W output is respectable, and pass-through charging means you can charge the Zendure itself while simultaneously charging your phone, which saves time if you are in a rush. This is the most convenient option if you despise carrying cables and want everything in one compact package. The downside is that integrated cables can be less durable than replaceable ones, but for casual users, the convenience factor alone makes it worth considering.
Should You Buy Now or Wait?
Amazon deals on power banks fluctuate constantly, and these prices are unlikely to stick around indefinitely. If you have been thinking about grabbing a portable charger, this is a legitimate window to save money on proven models. All five have thousands of customer reviews and ratings above 4.5 stars, so you are not betting on unknown products. The real question is which one matches your actual use case rather than which is cheapest. A traveler on planes should grab the Anker Nano for its international plugs. Someone who charges multiple devices daily should consider the Baseus for its capacity. A casual user who wants simplicity should pick the Anker PowerCore. Do not overthink it—pick one, buy it while the sale is active, and stop letting your phone die at 5 percent.
Which power bank under £25 offers the fastest charging?
The INIU 10000mAh delivers the fastest charging at 22.5W and is also the cheapest option at £18.99. It has three ports for simultaneous charging and includes airline approval for travel.
Is the Baseus 20000mAh worth the extra cost compared to 10,000mAh models?
Yes, if you charge multiple devices regularly or need all-day backup away from outlets. The double capacity justifies the £24.99 price for power users, though the extra 420g weight makes it less portable than lighter alternatives.
Can I use these power banks on airplanes?
The INIU 10000mAh is explicitly airline-approved. The others are standard lithium-ion power banks under typical carry-on limits, but always check your specific airline’s battery regulations before traveling.
These five power banks under £25 represent genuine value, not artificial hype. Each addresses a different priority—speed, capacity, portability, or convenience—so your choice depends on how you actually use your devices. Do not wait for the next sale. Grab one now while prices are down, and stop running your phone to empty.
Where to Buy
Ugreen Nexode Power Bank with Built-in Cable: | Anker Nano External Battery: | Belkin Magnetic Wireless Power Bank: | £13.99
Edited by the All Things Geek team.
Source: T3
