Specification-Output Current: Continuous 40A, Burst 60A up to 10 Sec -Input Voltage 2-6 cells lithium battery or 5-18 cells NiCd/NIMh battery -BEC: 3A / 5V (Linear mode) -Max Speed: 210'000rpm for 2 Poles BLM70'000rpm for 6 poles BLM35'000rpm for 12 poles BLM (BLM: BrushLess Motor) -Size: 55 x 28 x 12mm -Weight: 33g