Low internal resistance 2S LiPo from your friends at Reflex Racing. This battery has a capacity of 350mah and designed to be charged to 8.4V. Great punch and runtime in a small package. 20mm wide by 45mm long and 12mm tall. Designed to fit in your GL Racing GLR and GLR GT as well as your Atomic MRZ and other cars using the "std" Size battery. Comes with 3 prong JST 1.5mm Plugs as has become standard in the scale.