- Product Detail View - New 2S IMPACT Silicon Graphene Li-Po HV Battery release. IMPACT Li-Po 4200mAh 7.6V 130C is fit 1/12 scale racing and other classes. Provide maximum power and increase run time. - Specifications - Dimensions 96 x 47 x 18mm (L x W x H) Capacity 4200mAh Voltage Input 7.6V C-rate 130C Weight 166.5g Connector Type 5mm