NOTICE: Battery DO NOT Include!!! Cordless Chainsaw Only!!! Chainsaw compatible with MAKITA 18V Lit-ion Battery BL1820 BL1840B BL1820B BL1815B BL1835 LXT-400 BL1845B BL1845 194205-3 194204-5 BL1830B BL1850B BL1860 etc AUTO OILER SYSTEM: This mini chainsaw cordless is equipped with auto chain lubrication system. Just pour oil (general motor oil is fine) into the tank, then you can freely lubricate the chain by pressing, reduce wear and tear for smoother cutting, more cuts and less energy use. One oil fill can be used for a whole day, no more carrying around a heavy bottle of lubricating oil! UPGRADED BRUSHLESS MOTOR: This mini electric chainsaw is equipped with the latest 800 Watts brushless motor that has more torque, higher efficiency, faster heat dissipation, lower noise and a longer lifespan. SAFETY DESIGN: 8-inch mini chainsaw cordless has added a safety lock switch and splash guard. To prevent accidental starting, the safety lock and trigger must be pressed simultaneously to start