4 cells Li-Polymer 800mAh battery pack.Internal PCB for batery protectionOver-charging cut-off; 13VOver-Discharging cut-off; 7.2V Maximum discharge rate 1.5 Amps.Maximum charging rate1.5A Dimensions68mm x 43mm x 19mm Weight:66 gramsRecommended charger:Universal Li-ion / Li-polymer Smart Charger to charge this battery pack. Charging time is about60-65 mins. CautionImproper use like overcharging and over discharging can cause explosion and/or fire.User of the battery is required tohave the sufficient Li-polymer charging experience and technical knowledge. Tenergy or All-Battery.com are not responsible for any damage or injury caused by misuse, misunderstanding or abuse of this product. Download data sheet here.