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The INIU P50 is the tiny power bank we recommend for anyone who just needs to top off a phone during a day out. 10,000mAh of capacity, real 22.5W PD 3.0 output (measured, not advertised), and a form factor that actually fits in a front jeans pocket at 150×70×15 mm.
Why 22.5W matters on a small pack
Most 10,000mAh power banks advertise "fast charging" but deliver 10-15W, which charges a modern phone at the same speed as a 5W wall wart. The INIU P50 hits a genuine 22.5W PD output, which charges an iPhone 15 Pro from 20% to 50% in 20 minutes — the meaningful threshold for a quick coffee-shop top-off. 10,000mAh gets you about 2 full phone charges.
The budget caveats
The case is plastic (feels cheap vs. the Anker Prime), the USB-C port is PD 3.0 only (no PPS, no GaN efficiency), and the LED status display is a 4-dot indicator, not a percentage readout. For $24, none of this matters — it’s the cheapest way to carry real fast charging in a pocket.
Bottom line: Tiniest 10K pack we’ve tested with real PD output. Best sub-$30 travel pick.