This is the Onyx 4000mAh 4S 14.8V 30C LiPo battery with EC5. This new battery from Onyx offers a 30C discharge rate. Value is what these batteries are all about, good performance at the right price. All batteries can be charged up to 3C.
Battery Voltage: 14.8V
Connector Type: EC5
Maximum Continuous Discharge Current: 120A
Maximum Continuous Discharge Rate: 30C