18V X2 LXT Lithium-Ion (36V) Brushless Cordless 6-1/2 in. Plunge Circular Saw w/ (2) Batteries 5.0Ah, 55T Blade

It's part of Makita's expanding 18-Volt Lithium-Ion system . powered by 18-Volt Lithium-Ion slide-style batteries. Makita 18-Volt Lithium-Ion batteries have fast charge times . so they spend more time working and less time sitting on the charger. For improved tool performance and extended battery life . Makita created Star Protection Computer Controls. Star Protection is communication technology that allows the Star Protection-equipped tool and battery to exchange data in real time and monitor conditions during use to protect against overloading . over-discharging and overheating. For increased versatility . the tool can also be powered by Makita 18-Volt LXT and Compact Lithium-Ion batteries with the Star Symbol on the battery indicating Star Protection inside.