Battery charging from shore power?
Stock, do most trailers charge the batteries when they are hooked up to shore power? Or does that occur when the trailer is hooked up to the tow vehicle?
Forum Discussion
Vulcan Rider wrote:
Note, however, if there is a battery disconnect/storage switch, that will prevent any current from coming to going; they won't charge or discharge with that switch OFF.
While that's probably the most common case (particularly for connection to AC power), it's not exactly universal. Sometimes the battery will still charge with the disconnect switch set to disconnect. I suspect it may be more common for the charge line from the tow vehicle to be unswitched (along with the breakaway emergency braking system, which should never be on the switched side of the disconnect switch).
On my class C motorhome, the converter/charger is connected on the battery side of the disconnect switch, so the battery will charge even with the rest of the DC system turned off. The only certain way to tell is to examine things for yourself, say by checking the voltage at the battery with a voltmeter under various conditions.
