... High capacity : With high capacity li-polymer batteries .2. Long life : rechargeable li-polymer batteries, up to more than 500 circles, ... and short circuit protection.Specification :Internal Battery type: Li-polymer battery cellCapacity :5000mAh/18.5WhDC IN: mini USB ... High capacity : With high capacity li-polymer batteries .2. Long life : rechargeable li-polymer batteries, up to more than 500 circles, ...