Spektrum RC 6.6V 4000mAh 2S LiFe Receiver Battery: Universal Receiver, EC3

Product Specifications Specs Capacity 4000mAh Connector Type EC3 Discharge Lead Length 5.91 in (150mm) Maximum Charge Current 4.0A Maximum Continuous Discharge Rate 20C Normal/Standard Charge Current 800mA Normal/Standard Charge Rate 1C Product Height 1.54 in (39mm) Product Length 2.87 in (73mm) Product Weight 235 g (8.2 oz) Product Width 1.89 in (48mm) Watt Hours 26.4 Wh Wire Gauge 16 AWG Application Receiver Pack Balance Lead Length 1.97 in (50mm) Battery Balance Connector JST_XH Battery Capacity 4000-4999mAh Battery Type LiFe (3.3V per cell) Battery Voltage 6.6V