Gens ace LiPo batteries are made by a specialized factory that also manufactures packs for well-known premium brands. Gens ace Lipo batteries are skillful manufacture and excellent quality. The following lipo batteries are designed for Rock Crawler 1/10 Scale Electric Crawler, these lipo batteries feature with conservative C rating, better temperature control technology, longer cycle life and better quality control; the higher discharge platform, less voltage sag. You will feel more power during high discharge current situations.