Battery impact guns
Battery technology has improved so much. Ni-cad batteries only lasted me about 2-3 years & I had to have a bunch of them and a bunch of chargers to get though a days work.
The lithium ion batteries outlast the tools now. I only need a couple batteries & one charger. I have a 10+ year old power screw driver that I still use. It is taped together, but still works fine.