2014 DOA - Gem died while driving, now no display

Hi gang. I need some help to narrow this down. While driving yesterday, fully charged (newer batteries), the gem e4 just died. Rolled it back down the hill backwards…then then turn indicator beep started going off…then was able to resume driving. Flipped from reverse to low…which was fine. Then switched from low to high then it died again.
The charger blinks twice, indicating low\high battery.
No display.
No clunk or noise on ignition.
I have 13.1-13.4V for each battery.
All fuses seem fine.

Based on other threads it could be the key switch? Any ideas?

Here’s my baby…stranded. :cry:

What’s the over all voltage of your battery pack