I have the same one, but I still just use the little M12 battery. Since it comes with 2, I always have one on the charger. Combined with MIP hex bits, it's a great tool to have. Been using it for 3+ years and it hasn't let me down. The arthritis in my hands has been awful the past 5+ years. If I didn't have this tool, I wouldn't be able to wrench my trucks! Even still after a long fixing session, I have a hard time making my fingers do what I want the next day. Can't imagine how bad it would be if I just used hand tools.I use a Milwaukee M12 driver. With the extended battery, it will stand up on the handle, and run for days. Great torque limiting chuck too. Light enough to be easy to use for car maintenance, but enough power for 90% of around the house chores too.
Best $9 I ever spent.Harbor freight drill master cord less screw driver for mine with integy 4pc tin coated work good for me