Batteries

[hutch]

When the RV is plugged in to shore power doesn't that keep the house batteries charged? What about the chassis battery?

 

[Holdmybeer]

Ordinarily in newer RV's '05-'10 and later shore power will keep both charged. Prior to ~'05 probably not. If you have a switch that enables you to jump start the engine from the house battery you're most likely all good.

 

[hutch]

Ordinarily in newer RV's '05-'10 and later shore power will keep both charged. Prior to ~'05 probably not. If you have a switch that enables you to jump start the engine from the house battery you're most likely all good.

2017 Thor Windsport in WNY. I've had it plugged in all winter. Tried to start it got half a turn over. Not enough to start the generator either or try emergency start. I believe the batteries are probably original so they are due to be replaced just wanted to make sure shore power should keep them charged.

 

[osuallen]

I don't specifically know about your Thor, but the usual issue of not charging the house batteries is either the inverter tripped, someone turned off the inverter (and therefore the charger), or on some coaches turning off the salesman switch will disconnect the batteries such that they will not charge. Most coaches have a bridging device (BIRD or BIM) that connect the 2 battery banks to allow charging (it also disconnects to keep one from draining the other). Usually if the chassis batteries won't maintain charge, it is because the bridging device failed. 2017 chassis batteries have probably passed from old age.