... , the LED indicator is Red. It turns to Green color when full charged. 2, How to know the power bank's electric quantity ... -2, Green LED indicator shows capacity: 25%-75%-100% 3, How to charge cell phone, iPhone, iPad1, iPad2 or MP3, MP4, PSP ... to extend it's lifetime. 2, make sure the power bank's voltage is compatible with digital device. 3, Do not disassemble ...