Have not been here for months, but if anyone is curious... I have been running 20 cell of HobbyKing lipos successfully with the CA3 controlling the 3000w throttle.
The key to riding success is the throttle is set on the edge of turning the motor and after the rider is on and moving, the throttle is set to about 10% to 15% so the drive system is always loaded with some motor torque. This prevents the drive line from having slack and allows full throttle on and off without breaking chains and sprockets.
My only problem now is breaking motor free wheels, I have one now that is locked solid and it is best... no need to try to pedal this bike is not possible.
Bottom line, this is the best ebike solution for wood riding without aggravating walkers and other bikers
1. Has pedals and looks like a bicycle.
2. If you have to be stealth, the 3000w at low speeds and power is quiet enough.
3. All carbon bike, with large studded tires with the batteries in the backpack keeps the bike feeling light and nimble... I do NOT notice the batteries and do not bother taking them off for breaks, a walk or lunch.
Old ride video... with 20s it is faster now, but did bother with a video https://www.youtube.com/watch?v=ggfEeStGSRM