Dave said it pretty well. The inverter takes 12 vdc from your coach batteries and turns it into 120 vac. It will not power heavy loads, such as the air conditioners. It may power your microwave but not for long. In my coach there are several outlets powered by the inverter, I have not tried the one at the shotgun position. But there is a 12 vdc there we could use to charge DW's i-pad if necessary.
When you are parked without hook-ups it will provide you some limited power for watching TV or charging devices.
Your chassis battery is isolated from the inverter and has nothing to do with it. When RV engine is running all batteries are being charged. When using the genset or shore power only the coach batteries are being charged.
Hope this helps.
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Bob & BJ
On the way to ournextstop
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