The BLACK+DECKER? LCS1240 12" 40V Cordless Chainsaw features a 40V MAX Lithium Ion Battery for longer runtime and overall life - it stays charged up to 5x longer. It has a 12" Oregon low-kickback bar and chain which provides smooth and fast cuts. The tool-free chain tensioning allows for quick and easy chain adjustments, and it also features an 8.3 Pound lightweight design for ease of use and maneuverability. The automatic oiling system ensures constant bar and chain lubrication, and the wrap around bale handle provides increased control and comfort. The battery has a state of charge Indicator on it so you always know how much remaining charge your battery has. Backed by a 3 Year Warranty.