This is the Ultimate Racing 4S 120C 15.2v. 7500 mAh Graphene HV Stick LiPo Battery Stick pack with 5mm connectors.
This 4S battery is a standard size equivalent to two 2S stick batteries and weighs approximately 560g. It comes with a 5 mm connectors and a separate balancer cable to only connect it in the charging process.
Voltage: 15.2V (4S)
Dimensions (mm): 138x46x49