Features: 1) High capacity high power nickel metal hydride battery pack for R/C cars 2) Ni-MH technology enables convenient charging at any time 3) No cell memory effect, and no need to fully discharge before recharging 4) High power delivery with 35A maximum discharge rate 5) Uniquely designed and manufactured for high R/C racing performance 6) Fits with popular standard 7.2V R/C cars like Traxxas, LOSI, Associated, HPI, Tamiya, and Kyosho Specifications: 1) Standard dimensions: 5.3" x 1.87" x 0.95" 2) Weight: 12.5oz. 3) Capacity: 3,500mAh 4) Voltage: 7.2V 5) Connector: standard Tamiya 6) Standard charge: 12 hours at 300mA 7) Rapid charge: 1.5 hours at 3,000mA