[Bruceb]

Originally Posted by protoserge

What is the battery voltage showing on the logs? How old are your batteries?

[Bad advice retracted].

Try driving the robot in a stall condition by putting it against a wall and driving forward. See if your radio restarts.

we have all kinds of batteries but we lost comms some times when we were just going under the low bar. No big current draws, no big bumps.