Small powerbank with single 18650 cell. Branded as "URBAN BEATZ".
over-temperature protection, overcharge and over-discharge protection, output over-voltage protection, output overload protection, output short-circuit protection.
Preset 4.2V / 4.35V charge voltage with accuracy of ± 1%.
LED1 flashes (1Hz?), LED1 is always on when the battery is fully charged,
LED2 is always on when discharging, LED2 is flashing when discharging
LED2 1Hz flashing = low battery.
I've received this in non-working condition - it was not holding any charge at all. Few sources suggested resetting CID with screwdriver and although using this cell further might be risky it worked. Cell voltage jumped to 4.09V so CID probably "exploded" during charging.
Posted by T.O. at 00:17