The RYOBI 18" 40V HP Brushless Chain Saw is the perfect combination of power and convenience. This chain saw has all the power and length of a gas chain saw with less maintenance. The combination of a 40V 5Ah battery and brushless motor deliver the fast cutting speed and torque you would expect from a gas model. This chain saw features an adjustable automatic oiler, side access chain tensioning, and on-board tool storage for the most convenient operation and easy adjustments. The mechanical chain brake is a safety feature on the chainsaw that helps prevent kickback. When the job is complete, store the chain saw in the durable chain saw carrying case for easy transportation and storage. After use, place the battery on the rapid charger for 4X faster charging. Part of the RYOBI 40-Volt system, this tool is compatible with all 40V batteries and chargers. The RYOBI 18" 40V HP Brushless Chain Saw is backed by a 5-year limited tool warranty and 3-year limited battery warranty.