I have a few (working) 18V batteries (Makita, LXT) and I would like to be able to power some AC (220V) power tools with them. Many of the AC power tools have electronic control and simply applying DC to them would not achieve anything good, probably.
Is it feasible to connect these batteries (series, parallel) and use an inverter to output a decent 220V AC output? Is there some other way to use them to power existing AC power tools?