Confused about Battery BMS and motor ratings TSDZ8 750W
Posted by Additional_Delay_793@reddit | ebikes | View on Reddit | 4 comments
Can I use a 52V20AH 2500mAh Li-on battery with 40A BMS (fits 1500W motor) with a 48V 750W TSDZ8? How about a 48V20AH 2500mAh Li-on battery with 50A BMS (fits 2000W motor}? I would think the TSDZ8 750W would only draw as much current as it needs regardless of the batteries capacity to deliver current? If someone could explain this to me I would appreciate it.
Superb_Raccoon@reddit
It will only draw what the controller says to draw, up to the impedence level of the motor.
Usually the controller is the limiting factor as it is adjustable on the fly, where impedence is a function of wire material, sizing, and windings.
Additional_Delay_793@reddit (OP)
Thanks. Can I use these batteries rated 1500W or 2000W with the TSDZ8 750W motor/controller? Or do I risk burning out the motor or controller by doing so?
i_am_blacklite@reddit
Re-read the answer you were given above.
Ohm_Slaw_@reddit
A motor running at 48V/750W is pulling between 15 and 16 amps. So these batteries are more than capable of powering that motor.