I picked up the Dewalt 1/2" drive (20 volt cordless). I removed all the bus seats with it, completely dismantled all the upper storage racks down to the point of having a clean pile of materials ready for recycling, totally dismantled the wheelchair lift mechanism (probably 250 bolts), helped my son change out the transmission in his '02 Ram, and all that on one charge. I plugged it in last weekend just so I could top it off, but it was still ready to go. As a matter of fact, I just picked up the 2 drill brushless set with both batteries being the extended run 20 volt. Now I have 3 batteries, 2 chargers, all interchangeable.