I have a Metabo cordless grinder I beat the hell out of it kicks azz. Cutting, grinding, flap disc, and concrete grinding as well. It keeps begging for more. I gave my corded ones away and don't miss them one bit.
I bent up an old Dodge D-100 r/f frame once. Those frames are known to fold in towards the engine block in an impact. I chained the truck to some bollards in our work parking lot and used a Class B truck with another chain to straighten it out close.