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diy solar

Only 13.3 volts at a 100% ?

moonlitsouls

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Jan 4, 2021
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my voltage has been showing 13.8 on my SCC at a 100% since I got it working , today is dropped to 13.3 but still showing a 100% SOC , why is that? Also, my go power unit has an app I can connect to and the there is a setting for “charge state” it says “main”. What does that mean? I can’t find it in the manual , check out this pic 78754128-BC07-4919-8CFD-36CD829E7624.png
 
oops, i missed that it was lead acid.

At 12.8v, your batteries are fully charged. Everything above that is mostly surface charge and very little capacity.

You should pay more attention to the SoC of your phone. Your Go Power is doing just fine.
 
Last edited:
Did you make any adjustments to your controller?

My Lead Acid batteries usually show 13.8 or 13.9 at full state of charge when charged by my solar charge controller.

I would check the internal resistance and make sure nothing dropped off the bottom of one of the plates and is shorted.
Probably not, but it's worth checking.
 
Thanks guys. Switching to my lithium 280ah pack tomorrow so we’ll see if it increases
 
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