I hadn't used my powerbank for some months, and now I'm on the road with a non-working unit...
When I plug it to the wall for charging, the four status lights blinks twice before they go off. Then one of them keeps blinking as long as it's plugged. Even plugged for hours, it's still one of them blinking. This happens with different power adapters, and also when connecting to the computer for charging.
When trying to charge my phone, GPS or something from it, nothing happens.
I would assume those blinking lights are signalizing something, but I cannot find even the most basic manual for this unit online. Any suggestions?