From Muchmore Racing:
New 2S IMPACT Silicon Graphene Li-Po HV Battery release.
IMPACT Li-Po 4100mAh 7.6V 130C is fit 1/12 scale racing and other classes.
Provide maximum power and increase run time.
Dimensions: 92.5 x 46.5 x 18.2mm
Voltage Input: 7.6V
Connector Type: 4mm