Chordless impact wrenches

[SportsterDoc]

I am not wrenching as much as I used to, at age almost 79.  Although last night I replaced wheel bearings and seals on a 2002 Carson 5x8 utility trailer.  I had to stand on a 24" breaker bar to loosen some of the lug nuts. 

I have not had an impact since I sold all my air tools circa 1993...but there have been a few times I would have appreciated having one, if sufficient torque.

~10 years ago I started collecting 24 volt Kobalt tools from Lowe's:  Drill motors, blowers, reciprocating saw for me and then for my son..  Excellent torque and long battery life.  I had an issue with a drill motor chuck and blower switch.  Although the warranty states to return to place of purchase, Lowe's starting requiring me to contact Kobalt to get a return number.

Irritated and liking my local Ace, after moving to New Mexico, I started collecting Craftsman V20 tools.  They are OK for my use now, but the drill does not have the torque of Kobalt.  No issues in past 2 1/2 years, so no warranty experience:
Stick vacuum (used weekly)
Shop vacuum (used 2-3 times a week)
1/2" chuck drill (used 2 times a week)
Circular saw (used 1-2 times month)
Grinder (used every 2-3 months)
Jig saw (used every 3 months)
Palm sander (used once a month)

At my age they will probably last as long as me.

However, if I started collecting earlier, I would go with Milwaukee for tools expecting frequent use.  In the seventies to nineties, I had several Milwaukee corded tools:  Hole Hog, Hole shooter, reciprocating saw, etc.  Excellent tools.