12 volt fridges and boondocking?

StirCrazy wrote:

Fisherguy wrote:
We have a 07 27' Komfort trailer, I put 480 watts of panels on the roof, we have a 600 watt inverter for the Sat TV and 2 GC batteries. The only time we need to fire up the genny is after 2 or 3 days of rain. We only boondock, never have hookups.

I'm on the ORV Facebook group and people there seem to have lotsa money to upgrade their new expensive trailers. 3000 watt inverters, lithium batteries and 12 volt fridges are all the rage.

So now I've found a 2019 ORV with 2 - 100 Ah Lithium batteries, a 12 volt fridge, 600 watts of solar and an automatic sat dish on the roof for sale at (what I think is) a great price. I think the owners travel a lot in the US with full hookups.
It also unfortunately has a Schwintek slide, so I've been researching that but also I'm unsure if the 600 watts of solar would be enough for us when boondocking for 3 or 4 weeks at a time.

Any advice would be appreciated.
Thanks and Merry Christmas
Will

I have 480 watts in my 5th and four 6v batteries, so simular set up except I can go a bit longer before I worrie about power.

for you two LPF batteries will give you twice the usable amount of power asuming your 6V are around that 200AH mark. with two of them for max life you should only use about 50% of the capacity so that gives you 100AH to use. with the two LFP you have 200 usable AH to get the rated life, if you want more you can use less of it, but you don't need to set that up as right now if you can go three days with out sunlight with 600 watts of solar you will be shallow discharging anyways and can go longer without charge before it draws the battery down.

the only issue I see is how were the batteries treated, did he use a normal charge profile and just keep them up all the time, did he store them properly, is the converter and solare charger a proper LFP one so the profile is proper for charging and so on.. for me I would rather the guy take a healty chunk off the price and keep thoes batteries and purchase new ones if I had any suspisions about them.

I would definatly find out if he change the converter and solar charger to ones that are LI compatable at the very least.

I am not a fan of 12V fridges, I would probably trade it to some one with a good propane fridge if it would work, but it probably wouldn't haha.., but thats because I mostly boondock and using power for a fridge is a waist to me when propane lasts forever and does a good job. most I have looked at have a 5am draw when running, when I cam in the summer the temps are pretty warm (around 40C) so that would probably work out to a 50 to 60% duty cycle so that would use up 60 to 72AH in a 24hour period. right now running my 40 foot 5th wheel I only use 80AH in 24 hours and that is the very early spring or lait fall when I am running the furnace 24/7. in the summer I use 30 AH or less and that using the kureg in the morning and after supper and letting the kids watch a movie in the evening, if I had a 12V fridge it would take my daily use to 90ish AH in the summer and up to 150Ah in the winter..maybe less 130 to 140 as the duty cycle will drop a bit. the extra cost in batteries and panels to off set that over the cost to run the firdge on propane just doesnt make sense. now if you buy somthing with a 12V fridge you just have to make it work and in all likelyhood I would try grab that 3rd battery to give you the extra reserve capacity

Steve