This is the 7.6v. 4000mAh 120C Ultimate Racing Silicon Graphene HV LCG Shorty LiPo Battery Pack with 5mm connection. It’s a shorty battery with high power and capacity. The Silicon Graphene HV Shorty LiPo Battery is a great battery option for any racer looking for a lightweight, shorty style battery. The LCG shorty is lighter than a standard shorty pack, with a smaller footprint. This offers an improved power to weight ratio and a lower overall CG