MT off grid
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I have three 48 volt rack mount batteries, for some reason the battery that is connected to the positive side drains faster, any reason why?
Positive side draining faster
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Lt.Dan
Solar Wizard
Post pics of your configuration, more than likely though, a dirty connection causing higher resistance in some of the packs.
It also depends on what you mean by faster. Is it less than 5%? Thats totally normal.
It also depends on what you mean by faster. Is it less than 5%? Thats totally normal.
MT off grid
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MisterSandals
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What happens if you move positive to the bottom and negative to the top?
MT off grid
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That's my next step but need to make a new cable so I can, my OCD took over amd I made everything the exact same length so when i make a new cable it will be about a foot longer then the other
It's on wheels. Can't you turn it around just to test, so the cables reach? Seems a waste to make another cable if you don't have to. How do those connections on the battery torque down? OCD is a source of pride...hold your head high!
MT off grid
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Sure, I can spin it around I guess, just thumb screws that I torqued with pliers, guessing around 20 or so NM
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MT off grid
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Weird discovery that I never noticed before, I turned the mppt off and with only the inverter on I am pulling .60 amps from the top battery (lowest of soc) and 0 amps from the other two batteries, switched cables around and battery 1 is still showing amp draw while others show 0 while inverter is idle, under load the top battery shows a bit more amp draw then the other two, inverter off with mppt on I get equal amps on all three batteries
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