How to connect RV batteries together
I purchased a used RV (5th wheel) that has only 1 battery. I just replaced the battery and decided to purchase an additional battery so I can put them in parallel (or is the term series?). What I'm ...
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Yup...just got the RV and that connection was corroded very badly. Just had to clean it off to get things working but definitely going to spend a little more time working on cleaning it up
That terminal is not fixable the corrosion is clear up into the crimped end no amount of cleaning will fix this. You will need a new terminal end put on that.
After that if using FLA batteries I would highly recommend getting the red anti corrosion spray at walmart to eliminate further corrosion.
With DC power Voltage drop is your worst enemy. Add in the corrosion on that terminal and half the wires not even in the terminal your asking for trouble.
The battery will say I'm charged and your convertor will be on overdrive trying to push through the corrosion.
Also if you have any power hungry devices or run any type of invertor you will have significant power losses and constant low voltage alarms with short duration of use of power.
6 gauge 4 gauge it doesn't matter. the smaller the gauge or negative gauge is ultimately the best. I'm running 0 gauge welding cables for my connections and if it wasn't so expensive i'd run 4/0 gauge to eliminate the voltage drop.
I'm full solar and running everything in the rv though if your just using your batteries for lights what you got is fine. However I would still highly recommend replacing that terminal.
