Charging batteries

[Hardtime01]

I have an ACE 27.2 2015, when plugged into shore power shouldn’t this charge both the house and unit battery? I have replaced the house battery twice already but seem to continue to have charging issues...

[TurnerFam]

yes, if they RV comes with a bi-directional relay, or similar device... as most newer motorhomes do.

but, why did you 'have' to replace the house battery(s) several times?

[Beau388]

If the coach is on shore power or generator power, the Use/store switch or the master power switch must be in the use position to charge the batteries. Both switches use a latching relay near the power center. To check for proper operation, use a multi-meter or voltmeter check the house battery voltage. If it is being charged, the voltage at the battery will be between 13.1 volts and 14.2 volts. If the voltage is below 13.1 volts, the battery is not being charged. Same voltages apply for the chassis battery; however, there is another relay involved. The BIRD is found on most class As and connect both batteries for charging or emergency start of the coach's engine or the generator. Either or both relays can fail.

[Bob Denman]

If you've got a charger/converter, and the use/store switch is set to "Use:

[Long & Winding road]

You could have a converter issue if its not charging when pluged in and the switch is in the correct position. Check the voltage like they said above and rule out blown fuses/circuit breakers/bad switch etc first.

[Radioradio]

Originally Posted by Hardtime01

I have an ACE 27.2 2015, when plugged into shore power shouldn’t this charge both the house and unit battery? I have replaced the house battery twice already but seem to continue to have charging issues...

I have an ACE 27.2 2018, I have a volt meter plugged into the lighter receptacle in the dash. When I plug into shore power and it reads low I hit the switch next to the red power light and the voltage comes up. That means the coach batteries are happy as it is. Just have to engage the circuit that charges the chassis battery.

[Long & Winding road]

So it sound like your batteries are "low" when not charging?

What about the next day (after its plugged into shore). Does it still show "low" when your NOT hooked up to shore?

Or is it taking a charge now?