KATSU 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 amazon (compatible with BL1850 BL1860B BL1855 BL1840 BL1830 LXT-400 BL1820B BL1815).
With brushless motor the battery lasts almost twice longer than normal brushed motors, in addition it is maintenance free
High speeds for powerful screw driving, 3/4 inch, 2000Nm max. torque
Variable speed trigger with 0-900/0-1450/0-2000RPM and 0-900/0-1380/0-1650RPM impact rate
Comfortable soft and secure grip, built-in LED light illuminates the working area, forward/reverse operation
Rechargeable battery operated, much more convenient for outside operation
Compact size, can be used by single hand easily
Perfect for site work, curtain installation, building, auto maintenance etc
Specification:
Power supply: Rechargeable Li-ion battery
Voltage: DC 21V
Speed: Dual speeds
Cordless Tool Type: Impact Wrench
No-load speed: 0-900/0-1450/0-2000RPM
Shock frequency: 0-900/0-1380/0-1650RPM
Forward Rotation: 1650N.M.
Reverse Rotation: 2000N.M
Maximum torque: 2000N.M
Socket Size: 3/4" squre drive
Bare tool, without battery or charger