Cutting EMT, PVC Pipe, thin wall stainless, copper pipe, etc.... awesome. Battery lasts OK... not great but OK. Cutting rebar, concrete (diamond blade), tile on old thickset with mesh (diamond blade), or grinding metal (lawnmower blades) you might as well set up shop with every charger and battery you own, plus a cooler with dry ice to try to cool down the batteries (it works.. may not be good for the cells.... but it works). I love mine personally, but there is definitely something to be said for a corded grinder for the more demanding applications.