Solar installation question can a solar battery system be damaged by the coach batter

[sailski]

Can a solar battery system be damaged by the coach batteries being charged by the alternator, generator or shore power or visa versa? Or should it be turned off first. I have recently bought a 2017 Forester MBS 2014W and am in the process of installing a solar system to maintain the batteries when the motor home is being stored and provide some extra juice when dry camping. I will be using a 100 watt flexible panel mounted flat on the roof fused and connected to a controller and then to the 2 12 volt coach batteries. Is there anything I should do other than add fuses to the feed from the solar panel and to the batteries?

[spaach]

The charge controller you should be using with a panel of that size will have diodes to protect the panels from things like that. It also keeps the panels from being a draw on the system when it's dark.

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[Blackhat6mike]

Originally Posted by sailski

Can a solar battery system be damaged by the coach batteries being charged by the alternator, generator or shore power or visa versa? Or should it be turned off first. I have recently bought a 2017 Forester MBS 2014W and am in the process of installing a solar system to maintain the batteries when the motor home is being stored and provide some extra juice when dry camping. I will be using a 100 watt flexible panel mounted flat on the roof fused and connected to a controller and then to the 2 12 volt coach batteries. Is there anything I should do other than add fuses to the feed from the solar panel and to the batteries?

Simple answer is NO! You seem to have it all covered. Make sure to put those fuses into the system. I'll bet you end up adding more panels to your system once you see how well solar works. Been there, done that.