Hi Bak_Wan and
to the forum.
You haven't mentioned whether battery voltage is still present when the motor cuts out or whether any error codes are observed on the controller
(a series of beeps or LED flashes).
The only things I can think of is is a faulty
BMS, poor battery connection or the throttle signal voltage is exceeding the
Throttle maximum allowed voltage (V) value which is typically set at ~4.0V.
If there are no error codes, measure the battery voltage at the controller to see if the battery power is being disconnected at full throttle. If the voltage across the
B+ and
B- controller terminals drops completely at full throttle, it could be a faulty
BMS, or a poor connection on the battery cables breaking down under heavy load.
I would also check the tightness of the fuse terminal screws to ensure the connections are good.
You can also measure the Throttle signal voltage between the Green/White throttle signal wire and the Black/White Ground wire to see if it is exceeding the
Throttle maximum allowed voltage (V) value when full throttle is applied.
Please don't apologise for your English as it is very good, and much better than my Indonesian would be because I only know a few Indonesian words like gecko, gong, orangutan and Komodo.
Alan
