After testing hundreds of power banks over five years, one model has become my go-to for laptop charging. The Anker 25,000mAh power bank, priced at £75, has proven itself during a year of heavy use abroad, on conference trips, and while working on trains. But is it worth the investment?
How I tested
As a senior tech critic at The Independent, I've been reviewing power banks since 2017. For this review, I used the Anker power bank daily for a year, charging multiple laptops, phones, and headphones simultaneously. I also subjected it to accidental drops and travel stress.
Key specifications
- Capacity: 25,000mAh
- Max output: 165W
- Dimensions: 15.7cm x 5.4cm x 4.9cm
- Weight: 594g
Why it stands out
The power bank is notably heavy at nearly 600g, but this weight is justified by its massive capacity. It features two built-in USB-C cables—one retractable and one doubling as a carry handle—plus an additional USB-C port and a USB-A port, allowing simultaneous charging of up to four devices. The total output of 165W, with each USB-C port delivering up to 100W, ensures fast charging for most laptops, including MacBook Air (45-65W needed) and gaming machines (60-100W). Unlike lower-output power banks that merely slow battery drain, this model charges laptops as effectively as a wall outlet.
The intelligent power distribution system automatically allocates power based on device needs. For instance, when charging both an iPhone and a MacBook, the display showed each receiving 30W, enough for fast charging. The screen also shows overall output, battery percentage to two decimal places, and temperature. Flight-safe and durable, it has survived multiple drops and lasts several days between charges.
Should you buy it?
While £75 is a premium price, the Anker laptop power bank offers exceptional value for frequent travellers. Its built-in cables eliminate the need for extras, the 165W capacity fast-charges any laptop, and the battery lasts for days. After a year, it remains my top choice for portable laptop charging.
Alex Lee is a senior tech critic at The Independent, reviewing gadgets since 2017 with a focus on battery technology and fast-charging innovations. He has tested power banks for IndyBest since 2021.
