Forum Discussion
theoldwizard1
Jul 04, 2019Explorer II
BillHoughton wrote:
I presume that the house battery charging current is controlled by a separate voltage regulator from the voltage regulator controlling charge for the motor battery (otherwise, one or the other could be getting overcharged at any given time). Should I be testing that charging circuit, and is this something a good automotive electrical shop can test, or will I need to make an appointment with an RV shop (and wait and wait - the good one in this area is booked out for months)?
Highly unlikely that there is any kind of a "regulator" for the house batteries. Likely, at best, you have an isolator so that the house battery bank can not "pull down" the starting battery.
If you are relying on the vehicle charging system to properly charge the house bank, I highly recommend you invest in a DC-DC battery charger, like a CTEK D250SA. It will do a much better job of keeping your house bank charged.
A GOOD auto electric shop could do the job, but they need to back trace the current charging wire and remove the isolator so that they can follow the direction when properly installing the D250SA.
About Motorhome Group
38,763 PostsLatest Activity: Dec 05, 2025