RC Brushless Motor Ratings – Current Rating / Amps



The max current rating refers to the maximum amount of current that a motor is able to handle safely. This current is measured in Amps. The continuous current rating of a motor is the Amps that a motor can handle safely over a long period of time.



You can normally find the estimated current rating of a motor on the factory specs sheet. However the actual current that a Brushless motor will draw depends on a few factors, Kv rating, voltage of batteries, weight of RC vehicle, and gear ratio or prop size.



These all come into play because the harder that a motor needs to work in order to reach its Max RPM/top speed the higher the Amp draw will be. This is why it is a great idea to find an ESC that has a current rating that is higher than your motor’s by at least 20%. It will be a good safety cushion to make sure that you don’t burn up your brushless power plant.