If it is not a full battery then it is strange that the printer dropped restarted. It will be interesting to see what the company that installed the system says. Although without some sort of monitoring it may just be one of those things.In terms of the frequency issue, thanks to the forums, I became aware of that issue and at my request Tesla lowered it, I believe to 62.5 a number of months back.
The restarts happened around noon. The Powerall went down to about 50% overnight. By noon there had been recharging from solar, but only to about 70% by that point, so it was not nearly full. It took several more hours to fully recharge.