Quote Originally Posted by rfoster View Post
Bruce and Gary:

I want to confirm that in my case I was talking about the chassis batteries, not the house AGMs. The AGMs are charged by the inverters.

I had assumed that my chassis/engine battery charger was smart and would change to a trickle charge when the house batteries were full, - as evidenced by this past week and ultimately digging up the chargers manufacturer's owners manual - I have learned that the charger needs to be turned on only for about 10 hours a month if the bus is in storage. If the bus is used then the batteries are charged from the engine and the auxillary charger does not to be used. I had been leaving the charger on and ultimately ruined the chassis batteries by overcharging.

Education cost.
Thanks Roger,

I am talking about the chassis batteries now that I fully understand the thread.

My question on this is can the chassis charger be more like the invertor is to the house, only charge when the house batteries/chassis need it, in other words be hooked up at all times to an external power supply but only come on when it senses a need? This is how my boats have been charged while at the dock, plugged in to shore power, but charging as needed.

So to summarize, you guys are saying that the chassis batteries do not get any charge from the invertors at all at anytime. The only way the chassis batteries will receive a charge is if the coach is operating or if you use a separate charger? I have none.