No problem with my ASH-26E.

I have 2 12v/18ah batteries. One is is hardwired to the engine and a
panel switch to choose one or the other to run the avionics. I usually
run the instruments from teh 2nd battery, but not always.

After assembly, I energize the panel and all instruments are on for
30-60 minutes. I tow to the takeoff zone, start, warmup, and launch.
Never had a problem.

-Tom