I have replaced my batteries twice since buying my 2014 Bighorn 3010RL in fall of 2013. I have read through my owners manuals, talked to the dealer asked other rv owners and still don't know how to keep from overcharging the batteries. It seem to me that for the price I paid for this 5th wheel it should have a system that automatically keeps the batteries charged. I am baffeld. Do I turn off the power switch when hooked up to shore power and not living in it and if so, how do I keep the batteries charged? I hope someone can help me out. I'm tired of ruining batteries.
Hi galnelson,
Your Bighorn does have a system that automatically keeps the batteries charged when plugged into shore power. The charge comes from the Power Converter which converts 120V AC into 12V DC. The Power Converter used has several modes that apply different voltage levels to charge/maintain the battery.
Whenever plugged into shore power, keep the battery cutoff switch ON or no charge will reach the battery. Also, there's a 12V mini-circuit breaker near the battery that sits in between the battery and the Power Converter. If that is tripped, no charge will reach the battery. If you'd like more info on that, take a look at our owner-written
12V Block Diagram and Diagnostic Guide.
And if you are plugged in for an extended period, you should check water levels in the battery monthly to make sure you don't run the cells dry which will damage the battery.
If you are boiling off water quickly, that would ruin the battery and could be caused by a malfunction in the Power Converter.