Hobbymate 80A Brushless Speed Controller ESC 5v/3A Switch UBEC for Rc helicopter Rc Airplane Output: Continuous 80A, Burst 100A up to 10 Secs. Input Voltage: 2-6 cells lithium battery or 5-18 cells NiCd/NIMh battery. BEC: Peak-80A: 3A / 5V (Switch mode). Max Speed: 210,000rpm for 2 Poles BLM, 70,000rpm for 6 poles BLM, 35,000rpm for 12 poles BLM. (BLM: BrushLess Motor) Weight:Peak-80A: 62g.Peak-80A-OPTO: 58g.