One handy feature with this impact wrench is that it's brushless. It runs on a rechargeable battery, so it's completely cordless.
From Alan Wadkins
Makita TW007GZ 40v Max 1/2 Cordless Impact Wrench 1100nm Torque Bare U
BatteryUpgrade
Makita HR007GZ battery (2000 mAh 40 V, Black)
ITS
Makita TW007GZ 40V XGT Brushless Impact Wrench - Body