Interestingly must have gotten a couple factory seconds as mine were both labeled with a 20Ah label on the front but back had the 10Ah 37wh label. When I ordered these I actually had forgotten and thought they were the higher power ones (my mistake) and not the 5v 2A versions. I have cycled both of them twice and they got 31 and almost 33 wh of output to my phone. This is 84 and 89 percent of capacity which is about what one can expect. I get about 3 or 4 days recharging my pixel 7 (from about half) On the charge side they averaged 48.9 and 49 wh which is 76 and 75 percent efficiency based on the 37wh size. power wise I got an output of 5.05v and 1.36A (6.8w) and input recharging of 4.95v and 1.24A (5.7 w) so be prepared for 6 hours to recharge the power bank.

Reply by our customer service

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Bonne capacitée de charge et recharge très vite un téléphone. Pratique lors d'une panne de courant et fait aussi une veilleuse qui ne consomme pas beaucoup de batterie(longue durée)

good value

Full charge my phone from red and it only use 25%. Price is very competitive with USB C and Iphone cable came in handy.

This is a funky-looking power bank and all the features work properly. The loop handle could be a weak link, so handle with care.

Neat powerbank, but takes a long time to chwrge Also, no attached micro USB, but the included micro USB cable to charge it works