1/2" drive Cordless Impact gun

[roverbarmy]

Recommendations please for car servicing/maintenance work (wheel studs and general maintenance). I had an air impact gun but could do with a cordless to save having to cart the compressor or pipes around the garage. Don't want too flimsy but don't need too heavy. My old joints are getting past heavy spannering but don't want to give up altogether! By the time I get all the wheel fixings off I get too tired to remove the wheel!!! I already have a small driver that is OK for running on or off once the nuts/bolts are free.