lights give a great ambience, have 3 brightness levels. Turned on by double pressing quickly the power button. 1 press shows the battery %. 3 attached cables, lightning charges devices (phone), USB-A for recharging the battery. USB-C cable is NOT bidirectional, it can only charge device -1 star for that. Need to use separate USB-C to C cable to recharge battery. USB outputs automatically turn off after 15 seconds with low current draw :( common among power banks these days... Was trying to use for 5V fan. HACK: turn on the lights, then the 5V rail stays on. SWEET ! Running 12 hours w/ fan and only drained ~25%

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.

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A bit bulky but not overly so. The built-in cables are a nice plus.

Good portable charger. One full charge of it can recharge twice a drained iphone.

Solid power bank, holds charge well, lasts long, and has an interesting design. Not much to complain about honestly.

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)