Part # FlyFun-60A has built-in 5-Volt 3-Amp BEC*
Part # FlyFun-60A-OPTO does not have a built in BEC* an external power source for your receiver will be required
BEC = Battery Eliminator Circuit
1.1 Output:? Continuous 60A, Burst 80A up to 10 seconds.
1.2 Input Voltage:? 2-6 cells lithium battery or 5-18 cells NiCd/NiMh battery.???
FlyFun-60A: 3A / 5V switching mode BEC.
1.4 Refresh rate of the throttle signal: 50Hz to 432Hz.
1.5?Max Speed:? 210000rpm for 2 Poles BLM, 70000rpm for 6 poles BLM, 35000rpm for 12 poles BLM.
(BLM = BrushLess Motor)