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nilton61 You need to understand the working and rating of motors and controllers. An electric motor will attempt to deliver any power that is demanded by its mechanical load. If a motor is marked 500W 48V it usually means that it can deliver mechanical power of 500W at an specified rpm for some specified amount of time with some specified load class. If this motor had 100% efficiency it would consume 500W divided by 48V=10.4A but no motor has that efficiency so the current will be higher. This excess current will be converted to heat. The current will also increase if the mechanical load is increased. The 40A specified will probably mean the motors stall current. This occurs at 0rpm ie at start or when motor axle is held still. If this occurs too frequently the motor and or controller will be damaged
2021-08-16 08:32:50 Helpful (2)