melasta 3S 11.1V 2500mAh LIPO High Power Discharge Rate 50C Battery Packs with EC3 Discharge Connector for RC Racing Cars Aircraft MELASTA Battery, the first choice of car powertrain for most top Formula SAE Racing Teams in the world since 2012 up to date! Lipo technology : No cell memory effect. Compatible with: popular standard 11.1V RC cars which with EC3 connector. Standard Dimension: 104.5*27.16*32.9mm/4.12*1.01*1.29inch. Warranty: 35- DAY return policy and 1 Year warranty.