Even if it has not declared capacity its more than sufficient for all my needs (tablet and cell phone). Charging my cell phone (Sams S4mini) 3-4 times. Low charging time - about 6-7 hours. Excellent for that price!!!! In my country cost it two four times more.
It's a pretty useful gadget but don't get fooled by the capacity rating, it's far below 20000 mAh. I did not (yet) disassemble this power bank, but I'd bet my balls it has 3 (or maybe 4) 18650 batteries inside, so the capacity is between 7000 and 9000 at most, but likely much lower.
After almost a year, this power bank is charging my devices like the first time I used. Pros: 11 full charges (iPhone 5S) Low weight Cons: Charge a little slower than via laptop (4% less in 30 minutes charging) No manual
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