Resi Fridge draining batteries, please help.
Hello, Brand new Fifth Wheel owner, Just purchased a 2018 Forest River Arctic Wolf. We took our first trip last week and had a blast. Only "issue" we have is that we decided to get the residential f...
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That's the model # for the distribution center (Breaker panel) - there'll be a converter/charger mounted behind it somewhere. It should be a WFCO WF-98xx series converter, which are less than optimal as a battery charger. Why? Cause the voltages it charges at are way too low. And I'll bet a beer that the cables from your batteries to the converter are long and undersized. RVs are built as cheaply as possible.
WFCO bulk voltage is 14.4v, for a T-105 Trojan recommends 14.82v. Then the WFCO drops to 'absorb' at 13.6v where big deep cycle batteries want to keep that voltage at bulk level until current drops off. Float for the WFCO is 13.2v where a T-105 wants 13.5v. Couple the difference in charge voltage with the fact there's likely a pretty good voltage drop in the wire from the converter to the batteries - you'll get perpetually undercharged batteries. (Why PT said it can take like 160+ hours to get to a full charge)
I've used a typical golf cart battery for comparison, but 13.2 is IMHO still too low for cheapie G24s.
The solution is solar und a bigger battery bank, and a much better charger if being able to charge from generator/shore is important to you.
WFCO bulk voltage is 14.4v, for a T-105 Trojan recommends 14.82v. Then the WFCO drops to 'absorb' at 13.6v where big deep cycle batteries want to keep that voltage at bulk level until current drops off. Float for the WFCO is 13.2v where a T-105 wants 13.5v. Couple the difference in charge voltage with the fact there's likely a pretty good voltage drop in the wire from the converter to the batteries - you'll get perpetually undercharged batteries. (Why PT said it can take like 160+ hours to get to a full charge)
I've used a typical golf cart battery for comparison, but 13.2 is IMHO still too low for cheapie G24s.
The solution is solar und a bigger battery bank, and a much better charger if being able to charge from generator/shore is important to you.
