Archived from the Tools In Action forum (Power Tools). This thread is read-only.
With a known good battery x 4 the saw shuts off randomly after 30 seconds or so even on first use when it’s not heated up.
Two brand new M18 Sawzalls were doing this to me, sent them both in for warranty service. One came back working normal, the other repeated the problem a few times and then started working normally. If your saw is less than five years old box it up and send it in.