Battery cell Specifications：Battery cell 3pcs 2AH/ 2200mah 5C series parallel combination 12.6V2200mah)/10A/Brand：Tianpeng/A Battery info: life span - est. 350 times chargedischarge. Store at 10C~25C/50F~77F. Note about Battery Shelf Life : If the device is not used for an extended period, we recommend that you charge the batteries to 50% of their capacity every 3 months , you should also store the device containing the batteries in a cool and dry environment. Service life of battery is 3 years.