Code name “Baby”

[rvpopeye]

Interesting intermittent .
Just a thought but worth a try and costs very little except time. When looking into the power + grounds , don't just look. Take them all apart and make 'em shiny. Especially any braided ones. Maybe even add some ?
Also try disconnecting all power ,remove and touch the battery cables together for a little while (20 seconds or so) to make sure you drain all capacitors in it's tiny little brain and then let it sit for a few minutes before powering it back on.
Check the power connections to that battery meter or whatever is showing you the spikes too.

I'm sending good ju ju karma for luck.