Whether the brushless motor can be driven by the 18650 battery depends on whether the rated voltage of the selected motor and the rated voltage of the battery match. The 18650 battery has a nominal voltage of 3.7V, but in actual use, its voltage will gradually decrease with discharge.
If the selected brushless motor has a low voltage rating, such as about 3V, then the 18650 battery can drive the motor. However, if the brushless motor has a higher voltage rating, such as 12V or 24V, then multiple 18650 batteries need to be used in series to achieve the required voltage. In addition, it is also necessary to consider whether the battery capacity and discharge rate and other parameters are sufficient to meet the power needs of the motor.
Need to see the power of the motor, if the power of the motor is relatively small, the 18650 battery can be driven, if the motor power is relatively large, the required current is relatively high, then there is no way to directly drive
With 18650 lithium battery can drive brushless motor, as long as you reach the rated voltage! Some brushless motors not only need to supply power to the drive circuit, but also to supply power to the HALL, and ABC equiphase winding. Depends on how you handle it!