Brushless Motor

A brushless motor uses electronic commutation instead of physical carbon brushes to switch the magnetic field. No brushes means no friction from contact, less heat, and nothing to wear out over time. In practice, a brushless drill runs 10 to 25% longer per charge than a brushed version with the same battery because less energy turns into wasted heat. Brushless motors also adjust output to match the load, pulling less current on easy tasks and ramping up on hard ones. Every major brand has moved their mid-range and pro lines to brushless. Brushed tools still exist at the entry level.