Quote:

"@bud7h7 - The engines were OFF when the power was lost. I was NOT using any other source for power except the Battery Switch being ON."

I'm confused now because you replied to CS that the generators were on. With only battery power then obviously in time they will die (although usually too soon in FS). But with GPU power, APU or generators 1 & 2 on, batteries should not drain.

BTW my battery dies after 5 minutes even with APU power, but I think that is another issue that is being fixed.