slakr007 wrote on May 7^th, 2012 at 3:58pm:

Markoz wrote on May 7th, 2012 at 9:13am: These two: DC Meters - on BAT, positive indication on DC Amps. DC Meters - on BAT, negative indication shown on DC Amps. are interesting. I too thought the opposite would apply. A bug maybe? Yeah, that's what I'm thinking.  I'm wondering if the battery is draining instead of charging when you connect external power or the APU. One thing I just thought to test...  Just turn on the battery, switch standby power to BAT, then start turning things on and see if the battery drains.  If the DC Amps meter is correct, maybe it will not drain.  That would be fun and real handy in an emergency!

I was originally thinking, when I saw you say that the DC Meters showed a negative reading (power draining) when the switch is in the BAT position, that this was the cause of your loss of power. But mine does it too, without losing battery power after 2+ hours, so that can't be the problem. When I did do that Battery only test, and could still start the APU, the first thing I looked at was my setting FSUIPC, just in case I had turned it ON, but forgotten about it. It was not the case.

After sitting around for 20 minutes with the APU running and not losing power (still able to start the engines), I'm at a loss for why you (or anyone else) have the problem while I don't. Why did it happen to me (twice) back then, but not since? I sometimes think that it must have been something I did to cause it. Something in the way the switches were set or the order I did it. I honestly don't think I was doing it any different to back then. This all happened before the Part III - Normal Procedures manual came out, and I have changed to doing it accordingly, but it still won't drain the power and prevent me from continuing a flight. :(

Mark