The Makita BGA452 is a 18V LXT Lithium-Ion Cordless Cut-Off/Angle Grinder Kit. The Makita BGA452 cut-off/angle grinder has a Makita built motor which delivers 10000 RPM and produces 50% faster grinding. The Makita BGA452 has a more compact design at only 12-1/2 inch long and weighs only 5.6 lbs for less operator fatigue. The Makita BGA452s ergonomic shape fits like a glove with even pressure and easy control. The Makita BGA452s LXT Lithium-Ion battery provides longer run time, 5x lower self-discharge (for use any time) and 16 firm holding contact terminals (for constant high power). The Makita BGA452 has a 45-minute optimum charger and battery which communicates throughout the charging process using the built-in chip in the battery and built-in CPU chip in the charger. The charger also uses Active 3 Control for current control, thermal control & voltage control.