Xiaomi Ultra-Thin Magnetic Power Bank

Power banks have never been exciting — until Xiaomi built one that looks more like a polished metal card than a backup battery. The Ultra Thin Magnetic Power Bank 5000 15W is just 6mm thick and weighs 98 grams, less than two eggs, Xiaomi Ultra-Thin Magnetic Power Bank making it thinner than most flagship smartphones.

The trick behind that slimness is a high-energy-density silicon-carbon battery with 16% silicon content, paired with a 4369mm² graphite sheet, delivering a 5,000mAh capacity in a card-like body. Silicon-carbon cells simply pack more energy into less space than standard lithium-ion, which is how Xiaomi avoided the usual “thin means weak” trade-off.

Charging specs are solid: up to 15W wireless charging via Qi2 (full speed on Xiaomi 17, capped at 7.5W on iPhone), plus a USB-C port delivering up to 22.5W wired output, with support for charging two devices at once. It snaps onto your phone magnetically — a cable-free, snap-on charging experience — though Xiaomi 17, Galaxy S25, and Pixel 10 users will need a magnetic case since those phones lack built-in magnets.

Build quality feels premium too: an aluminum alloy shell with a fiberglass magnetic contact surface, backed by dual-NTC temperature control and CCC safety certification.

Availability is the catch

The rollout has been staggered rather than global — starting in Japan at around $50, then expanding to Australia, Singapore, South Korea, and Europe, with an official showcase at MWC 2026 in Barcelona. Pricing varies by region: $69.50 in Australia, £49.99 in the UK, and around €60 in Europe for the Silver and Black colors, €65 for the Orange version (do you want to buy) .

I’m usually skeptical of “thin” as a marketing gimmick, because it often means sacrificed battery life. This one’s different — Xiaomi changed the actual battery chemistry to earn the slimness, not just the housing. That said, 5,000mAh is realistically a single full top-up, so treat this as a “forgot to charge at lunch” accessory, not a weekend-trip power bank. If you want serious backup capacity, look elsewhere.

Pros

Xiaomi’s UltraThin Magnetic Power Bank impresses with its 6mm thin, 98g body — about the weight of two eggs — while still packing a 5,000mAh silicon-carbon battery. It offers cable-free magnetic snap-on charging compatible with major phones, plus USB-C wired charging as backup and the ability to charge two devices at once. Safety is solid too, with dual-NTC temperature control and ten layers of protection. MI + 5

Cons

At 5,000mAh, capacity is modest — enough for a partial top-up rather than a full recharge. Charging speed is capped at 15W wireless and 22.5W wired, and iPhones are limited to 7.5W wireless instead of the full 15W. The metal shell can also get noticeably warm during use since it doubles as a heatsink. eBay + 2

The bigger frustration is availability — a product this well-designed deserves a proper worldwide launch instead of a scattered, region-by-region rollout.

Bottom line: a genuinely clever accessory that finally makes power banks feel like something you’d want people to see, not hide in your bag.