The ProTek R/C 2S 130C Graphene + HV 4200mAh Shorty LiPo Battery is a great battery option for anyone looking for a lightweight, shorty style battery. Weighing only 170 grams, the HV Shorty is lighter than a standard shorty pack, with a massive increase in capacity. When compared to standard LiPo and LiHV, Silicon Graphene cells deliver improved efficiency, lower operating temperatures, lower internal resistance, better run time, increased cycle life and increased voltage.