... power supply! Also available for the player, USB sound card, USB fan and other fixed equipment power supply! ... one; but also has overcharge, overdischarge protection, short circuit protection function. Long life design,after 500 cycles of ... 6, the charging time: about 4hrsStandard interface: 1, the input interface: MINIUSB interface;2, the output interface: USB interface ( 5.5V 700mA ).3, material: ...