Features 9.6V NiMH 1600mAh 9.6V NunChuck Style Mini Battery Pack made of 2/3A x 8 cells 1600mAh NiMH mini Tamiya female connector assembled with 16 G wire Fits Airsoft guns such as G36C, M4A1-RIS, M4A1, CAR15, MP5A5, MC51, FNP90, AUGRT,AUGM, G3A4, G36, STEYR. For use in ERA002, ERA004, ERICS13, EROA002, EROA003, SDGE0507R2, SDGE0501R2, upgraded and/or modified AEGs. Feature - Rapidly charge up and long cycle life - High power with high discharge rate - ~ 8 minutes firing time at 10A discharge power. Best if stored in temperature 35-70 Degree and keep away from sun light or heat. Weight 0.3 lb Dimensions 2 units, each 18 mm in Diameter and 116 mm in length. Recommended to charge with a Universal Smart Charger. Set charging current to 0.9A when charging with the above smart chargers. (Not included)