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diy solar

Is “rested” 50% SOC voltage reliable/repeatable?

Johncfii

Solar Enthusiast
Joined
Nov 24, 2020
Messages
265
i have a question for those of you who have done a lot of coulomb-counting for SOC monitoring.

If you let your battery pack rest overnight at about 50% SOC, is the resulting battery pack voltage that you see in the morning consistent enough that you can confirm whether or not your SOC monitor indication/calibration is still reasonably accurate? By battery pack voltage, I would mean voltage read right at the battery terminals, with an accurate meter, to minimize measurement errors.
 
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