Best power banks to keep your phone alive (2026)

A genuinely good-value 20,000mAh pack that delivers close to its rated capacity, with a clear battery display, USB-C in and out plus two USB-A outputs, and an unusually long three-year warranty. For most households wanting a reliable backup for phones and tablets, it is hard to beat at the price.

Worth knowing: 22.5W output is modest — fine for phones and tablets but slow to recharge the bank itself and not enough for most laptops

Who shouldn't buy it: You need to fast-charge or run a laptop, or want the quickest possible recharge — step up to INIU's 65W model (the B62) instead. If you only ever top up a single phone, a lighter 10,000mAh bank will cost less and weigh half as much.

INIU's newer 20,000mAh bank keeps what made the B5 a good buy (near-full real capacity and a three-year warranty) and adds a built-in USB-C cable, so the lead can't go missing from the drawer. In techtest.org's test it delivered 93% to 98% of its rated capacity, which is excellent, at 114 × 72 × 29mm and 330g. The 45W figure is a peak, not a steady rate: the same test found it throttles as it warms, so treat it as a phone and tablet bank rather than a laptop one.

Worth knowing: Can't hold 45W for long: techtest.org found it throttles as it heats up, so it isn't a laptop bank

Who shouldn't buy it: You need to run a laptop from it: a bank rated for sustained laptop output, such as the higher-wattage Anker, UGREEN or EcoFlow models here, suits that better. If you only top up one phone, a 10,000mAh bank is lighter and cheaper.

A big-capacity bank with 165W in total and up to 100W from each USB-C, enough to charge most USB-C laptops as well as phones. The two built-in cables mean nothing to lose from a grab bag. Like any power bank it charges USB devices only; mains appliances need a portable power station.

Worth knowing: Heavier and dearer than a phone-only 10,000mAh bank

Who shouldn't buy it: You only need to keep a phone topped up. A 10,000mAh bank costs less and weighs far less, and for mains appliances you need a power station instead.

A large 25,000mAh (90Wh) bank whose first USB-C port is rated by UGREEN at up to 140W, enough for most USB-C laptops, with a second 65W USB-C port and a USB-A socket for phones. It adds a laptop-capable choice at a lower step than the Anker 165W and 300W models on this page, and UGREEN UK states a two-year warranty. It is a big, heavy unit, so it suits a bag or a kit box rather than a pocket.

Worth knowing: Stated weight of 513g and a 160 x 80 x 26mm body make it a bag item, not a pocket one

Who shouldn't buy it: You mainly charge phones and want something pocket-sized (a 10,000mAh bank fits better), or you need built-in cables.

EcoFlow states 25,000mAh (90Wh), up to 140W on a single USB-C port and 170W in total across two USB-C ports and a USB-A socket. It also accepts 140W input, which the maker says refills it in about an hour with a suitable charger. It overlaps the UGREEN 25K on this page, but EcoFlow states faster recharging (140W input against UGREEN's 65W) and 140W from either USB-C port; like the UGREEN, it has no built-in cable.

Worth knowing: Stated 565g and 157 x 53.8 x 48.8mm body is bulky for pockets

Who shouldn't buy it: You want an attached cable (the RAPID Pro or UGREEN built-in models fit better) or only need a phone top-up.

Anker's high-end bank offers 300W total across two USB-C ports and one USB-A, with a 26,250mAh (99.75Wh) capacity that Anker describes as flight-approved. It is the strongest option here for laptops and several devices at once, and it recharges quickly with a suitable high-wattage charger. It is heavier and costs more than the 20,000mAh banks, so it is overkill if you only charge phones.

Worth knowing: About 600 g and 38 mm thick, noticeably bulkier than a phone-only bank

Who shouldn't buy it: You only need to charge phones and earbuds; a 10,000mAh or 20,000mAh bank is lighter and lower cost.

A dependable mid-capacity bank that will recharge a typical phone three to four times, making it a sensible anchor for a home power-cut kit. USB-C Power Delivery means modern phones charge quickly and the bank itself refills far faster than the old micro-USB designs.

Worth knowing: Lower capacity than the old PowerCore 26800 it replaces, so fewer charges per fill

Who shouldn't buy it: You need to run a laptop or want the most charges per fill, in which case step up to Anker's 25K 165W laptop bank instead.

A 20,000mAh bank from an established charger brand that carries its own attached USB-C lead, plus a second USB-C socket and a USB-A socket. Peak 45W is enough for phones, tablets and many lighter laptops over USB-C PD. It gives a non-Anker choice on a page where most picks are Anker, but the maker states that output drops sharply when more than one port is in use.

Worth knowing: UGREEN states total output is 15W when two or three ports are used together, so fast charging is a one-device feature

Who shouldn't buy it: You regularly charge a heavier laptop (the Anker 737 or Anker Prime 300W fit better) or want something pocket-slim (a 10,000mAh bank fits better).

A 10,000mAh bank with a magnetic ring for wireless charging, which Belkin rates at up to 25W, and a USB-C port rated at up to 30W wired. Belkin supplies a 60cm USB-C lead and a two-year warranty. It sits above the Anker MagGo slim model on this page for wireless speed, and it is a better fit for a phone-only household than for anyone charging a laptop.

Worth knowing: The full 25W wireless rate needs a phone that supports Qi2 25W; other phones charge more slowly, and phones without magnets need a magnetic case

Who shouldn't buy it: Your phone does not support magnetic Qi2 charging, or you want to power a laptop (a higher-output bank fits better).

A slim 10,000mAh bank that clips magnetically to the back of a compatible phone and charges wirelessly at up to 15W, with a USB-C port for everything else. It suits people who want a tidy, cable-free top-up through a power cut or a long day out. It gives you a single wired port, so it is less flexible than the multi-port banks on this page, and the wireless route is slower than a cable.

Worth knowing: Only one wired port, so a second device has to use the wireless pad

Who shouldn't buy it: You want to charge a laptop or several devices at once, or your phone is not Qi2 or magnetic-compatible; a multi-port wired bank such as the Ugreen or Anker 20K models fits better.

A Danish accessory brand's aluminium 10,000mAh bank with a USB-C port rated at 20W, two USB-A sockets that Sandberg rates at up to 22.5W, and a micro-USB input as well as USB-C for recharging. Sandberg states a five-year warranty and includes a short USB-A to USB-C lead. It is not the fastest or slimmest option on this page, but it widens the choice with a non-Anker, non-UGREEN brand and a sensible spread of ports.

Worth knowing: Sandberg's datasheet lists a 250g unit, heavier than most slim 10,000mAh banks

Who shouldn't buy it: You want fast charging for tablets or laptops (a higher-wattage bank fits better) or need a built-in cable.

A dependable, no-drama 20,000mAh bank from a trusted brand that will recharge a typical phone three or four times. Just don't expect fast charging or enough grunt to run a laptop.

Worth knowing: Modest 15W maximum output is slow by 2026 standards, and that power is shared across ports when charging multiple devices

Who shouldn't buy it: You need to fast-charge a laptop or want rapid 45W+ USB-C PD top-ups — look at a higher-output bank instead.