2 Packs No cell memory effect. No need to fully discharge before recharging. Traxxas High Speed Connector (100Amps+ Current Capability) All Cells Matched and Zapped Fits with popular standard 7.2V RC cars like Traxxas, LOSI, Associated, HPI, Tamiya, Kyosho, etc. Standard Dimension: 136mm x 47.5mm x 24.5mm, fits all RC10 cars