Ugh.
Friday night: set up at a show with Battery B on the V2 at 6v. Only ran for a minute or so, the low-batt. light came on and it shut down
So something is bring besides/in addition to Battery A. I set Battery B to 12v, it ran for the rest of the night (about 2 hours).
Saturday night: started the show with Battery B at 12v, it shut down after 2.5 hours. Does running at 12v drain a battery that much faster than at 6v? I (obviously) know next to nothing about electricity. . .
Ended up fumbling back and forth with both batteries trying to get the whole show last night. Ended up with 3 cuts in my recording