The 16 in. 40-Volt Brushless Chainsaw includes features to make your cutting experiences just as efficient as a gas unit, with the convenience of battery powered operation. With a 4 Ah, high-capacity 40-Volt lithium-ion battery and a brushless motor, this saw delivers the fast cutting speed and higher torque you would expect from a gas model. Load-Sensing technology automatically adjusts the power, providing optimal performance. With features like side access chain tensioning, an automatic oiler, mechanical chain brake, and on-board tool storage, you'll experience easy, comfortable operation for any clearing jobs. As part of the RYOBI 40-Volt system, it is compatible with all 40-Volt batteries and chargers. The tool is backed by a 5-year limited warranty. The batteries are backed by a 3-year warranty.