I'm working on it..  I could make a quick fix right now.. if I had the documentation for their naming conventions... but I'll figure it out eventually..

The quick fix that would at least get us by.. would make it so that when the CaptainSim APU generator is on-line, the FSX APU generator was also "on" (bool)..  battery stays charged.. problem solved..

This has been an issue long enough, that it's fair for us to get impatient..