Battery charging question

[FlyMeAway]

Should my AC main switch need to be on to charge the battery from shore power? I was under the impression that it didn’t have to be (from dealer orientation) but got back to the boat recently and battery wasn’t charging. Flipped the AC main switch and charging started. Is that normal?

 

[BB marine]

Yes the AC Main switch must be on and 120V supplied to the panel in order for the battery charger to be powered. When the boat is plugged into a 30 amp shore power receptical and the Main shore power switch is turned on the inverter transfer switch will change the operation from invert to convert and start charging the batteries. I am assuming you have a Promariner charger/inverter The best way to understand the funtion is to read the operation description.

https://www.google.com/url?sa=t&rct=j&q ... OYlTR8uBob

 

[FlyMeAway]

Thanks. It is an Abso not a Promariner. The larger boats have a combined inverter/charger that is connected directly to the batteries. That’s why this behavior seems weird, and why the dealer told me the AC main did not have to be on the charge the battery, but perhaps I’m missing something.

 

[SJI Sailor]

Same behavior (Abso charger/inverter) on our C30: the charger starts when the AC circuit breaker on the panel is turned on.

 

[BB marine]

Kisae charger/inverter while IMO are a better unit than the Promariner but function the same as SJI Sailor stated. Dealer is not correct. (Invert)12V battery needed to make 120V. Convert 120V shore power or generator to charge 12V.

 

[Osprey]

Perhaps the misunderstanding relates to the battery switches. These do not have to be on. The charger is connected directly to the batteries.