Truck charge camper battery?
I tried a search on this but I didn't come up with anything, maybe wrong search words :) Anyway, for the past couple of years my fridge protocol has been to plug into shore power the night before we l...
Forum Discussion
bighatnohorse wrote:
Unlike other camper brands, your Lance camper has a factory supplied proprietary heavy duty power supply wire built into the umbilical cord to the truck.
What does 'proprietary heavy duty' mean here? Unless the wire is at least 4g (2g is better), the alternator output voltage is most likely reduced too much to ever fully charge the camper batteries.
The so-called 'isolator' also causes a voltage loss in some cases.
Both can be assessed by comparing output voltage at the alternator (14.2v - 14.4v) to voltage actually at the camper batteries (when the batteries actually need charging, so that there is substantial current in the wire). If charge voltage is less than 14v, trouble.
Several have posted charge circuit implementations that actually work: here's mine .
