The Gens ace 2300mAh 7.4V 35C 2S1P Lipo Battery with a patented iEC2 plug is specially designed for Arrma Grom Series and other mini scale vehicles.Features Extended Run Time: 2300mAh capacity allows for longer driving sessions, maximizing your enjoyment. Patented iEC2 Plug: Our self-designed iEC2 plug ensures maximum compatibility with original vehicle connectors. Reverse Polarity Protection: The iEC2 plug is designed to prevent reverse connection for added safety. Seamless Compatibility: iEC2 plug is fully compatible with EC2 and IC2 device connectors. Perfect Fit: Small 1/18 GRANITE GROM, small scale TYPHON GROM Buggy and MOJAVE GROM. Spec DataWeight 115gHeight 21mmLength 101mmWidth 31mm