This is a Trinity RevTech 2S 7.6V 4000mAh Graphene Hi-Voltage LiPo LCG Modified Motor Battery Pack with 5mm Bullet Connectors. The Graphene LiPo battery is produced with higher grade, safer materials, which results in longer battery life. The Graphene's new assembly technology limits "cell puffing" resulting in a more durable and impact resistant battery.
Battery Type: LiHV
Balance Connector: 2Mmm pin
Dimensions (LxWxH): 95x47x18.5mm LCG Shorty
Maximum Charge Rate: 1C = 4amps
Continuous Discharge "C": 55C