... overcharging, temperature, short- circuit….. 3,LED light 4,Non-slip grip design Product Modle:T4 Color :white Battery:Lithium-polymer battery Capacity ... :500MA Packing:Battery x1,data cableX1 Lithium-polymer battery: more stable and safe than Lithium-ion Cupule design to fit and grab ... material, special shape design. Charging Anti-skid designThere is a micro USB port in the side, used for data ...