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Our 2021 337RLS has 2 Interstate group 27 batteries, picked it up from getting the refrigerator wiring recall done and having it gone through to make sure it’s road ready for a trip to Gulf Shores in February. Pulled the batteries and brought them home, one was reading high 12’s or low 13’s after towing it home. The other was reading 9 and change. Had some cheap Harbor Freight .5 amp charger/maintainers that I put on both. One got to full charge and I ran a load test, it appears fine, the other one after close to 24 hours was up to 10.2 VDC. Figured it would take forever at .5 amps to charge, so called Batteries Plus, they said they would fully charge, if possible, and or dispose of it if necessary. Waiting for a call back, think I already know the answer. We can manage on 1 battery since we are always on shore power(previous owner had added second battery before we bought it), however I’m considering getting one of those LiTime 12V 230aH LiFePO4 batteries and probably have to upgrade our converter too. Thinking of things down the road, when the fridge craps out probably look at 12 VDC one so can run it while driving and maybe be cold before our destination arrival. Who knows, may eventually add enough solar to charge said battery to run fridge. What would be minimum solar to charge a battery that size?
Another question, I need to verify which converter we have, but according to the build sheet it is a Progressive Dynamics PD-9260. It appears to be a 60 amp converter but not LiFePO4 compatible. So if I do upgrade batteries, do I need to go back with a 60 amp charger or would a 40 amp be sufficient and just take longer to fully charge?
Another question, I need to verify which converter we have, but according to the build sheet it is a Progressive Dynamics PD-9260. It appears to be a 60 amp converter but not LiFePO4 compatible. So if I do upgrade batteries, do I need to go back with a 60 amp charger or would a 40 amp be sufficient and just take longer to fully charge?
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