This is the Onyx 4S 40C LiPo Battery with 4000mAh capacity. For anyone who wants more run time and performance, there's no better time to move up to LiPo power. This series of batteries provides exceptional punch for a great price. All batteries can be charged up to 3C. In addition, the 40C Onyx batteries have an LED display that indicates the filling status of the battery at the touch of a button.

Battery Voltage: 14.8V

Capacity: 4000mAh

Connector Type: EC5

Height: 1.37" (35mm)

Length: 5.66" (144mm)

Maximum Continuous Discharge Current: 160A

Maximum Continuous Discharge Rate: 40C

Weight: 14.11oz (400g)

Width: 1.73" (44mm)