Capacity: N/A (up to 7000 mAh)

Test results: 17.4Wh (2h19m@12v 0.6A) with 2xLii-35A

Charging power: 5W

Output: 12v 1A

Input power limit: 5v 3A (15W)

Price: 4$

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Charge the UPS

2x3500 mAh charge time is ~ 7 hours

Other device charge attempt. LX-28USB  with a mix of new LiitoKala 3500mAh and old unknown 2600 mAh (about 2100mAh real capacity) batteries