KV Rating

NOT TO BE CONFUSED WITH KILOVOLT (kV).

Kv describes the RPM (revolutions per minute) a motor does per Volt that is put into it when no load is attached to that motor.

• refers to the constant velocity of a motor

$KV=\frac{\text{RPM}}{\text{volt}}$

Links

• https://www.minipro.com/blogs/articles/motor-turns-kv-rating
• https://www.rotordronepro.com/understanding-kv-ratings/

Generally speaking the more Kv a motor has, the more RPM and more power. For example, a 9000Kv motor would be faster than a 2200Kv motor.