Originally Posted by 2008MDY
Freightliner finished installing the new alternator last night around 8pm.
Freightliner said started, ran it, battery voltage where it needed to be 14.6.
Went to pick up the coach this morning... won't start. Dash display low battery. So they had to jump start, which worked, now we are waiting for them to re diagnose if needed.
Should the coach have been plugged in to shore power? Once we do get the coach home... does it need to be plugged in to shore power? (Coach will be stored indoors in a heated building).
The dealer said we can go from 50-30 down to 110 just to keep the chassis batteries charged.
If the coach had been plugged into shore power and your BIRD system was working properly then the chassis batteries would have been charged. But, with new chassis batteries, there is some large drain present which is not usual. It is possible that due to the work on the alternator, these batteries haven't been adequately charged.
Since you have inside storage, maintaining shore power to the coach would be a good thing. If this is your building, having a 50 amp outlet wired up so your have full coach systems available would be great. It is true that to maintain battery charging function, you can do that with a simple residential 20 amp circuit. You would have to be careful to have most everything else off and the Inverter/charger set low enough for the available current.