Originally Posted by killarney77
A late addition..
Great info, I am new to this. I have one battery and debated going to the 2x 6v format. If I was to add another batter case would the be an issue charging?
My fridge drains the battery within a day. Is this normal? I realize dry camping it would run off the propane. Solar is interesting as well, was looking at the panels at Costco. Thanks
I assume you have a PUP with the 3 way fridge that runs continuously. (Some high wall models have larger thermostatically controlled fridges, the following does not necessarily apply). The DC mode generally has poor cooling performance, and will generally eat a battery flat in a matter of hours (5-8 amp draw for most small fridges on DC).
Once disconnected from the tow vehicle, I run the fridge on AC (if available) or on propane. The propane draw from the fridge is very small in comparison to other propane appliances - a single full propane tank will easily power the fridge by itself for at least 3 weeks.
For dry camping, my goal is to minimize battery usage - battery, then water, runs out long before propane. I don't want to have to babysit a generator or solar panels, so I installed sufficient battery to carry us (with reasonable usage of the heater - heater fan is biggest draw) for 4 days/3 nights of dry camping.
Maximum charge rate for my WFCO converter is 30 amps. Maximum charge rate for batteries is 20% of AH capacity. My dual 80 AH batteries could safely accept 32 amps of charge when in bulk charge mode, so the 30 amp rating of the converter is about right.
If I had dual 6V golf cart batteries (220 AH total at 12V), I could charge faster than the converter can put out, but I really don't see the slightly longer recharge time as an issue when I don't carry a generator. The converter could be replaced with a higher capacity (and more reliable) unit if faster recharge of a bigger battery bank was wanted when AC is available.
2014 Rockwood A122
2008 Hyundai Entourage (minivan)
camping Colorado and adjacent states one weekend at a time