With brushless motor the battery lasts almost twice longer than normal brushed motors, in addition it is maintenance freePowerful 1000W motor with no-load speed of 500rpm ideal for felling small to medium-sized trees and cutting logs16" bar with 20m/s chain provides excellent medium-duty cutting powerTool-free chain tension adjustment and automatic chain lubrication systemErgonomic handle with a soft grip surface for a firm and secure hold during useKATSU FIT-BAT Cordless Tools Range they all take the same battery, works on both 18V or 21V, compatible with LXT range, use your current or easy to find on line(compatible with BL1850 BL1860B BL1855 BL1840 BL1830 LXT-400 BL1820B BL1815)Specifications:Power: 1000WNo-load Speed: 500rpm16''/40cm bar and chainChain speed: 20m/sAutomatic chain lubricationChain Pitch: 3/8"Without battery and chargerCan be used for wood cutting, pruning, harvesting, chopping wood, etc.Check other modes in our store.