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Shoto 48v 5kw batteries

cfj
in Batteries

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Hi all

I have 3.5Kw of solar panels, a kodak 5Kw inverter and 3 Shoto 5kw batteries. The system is 6 years old and is very reliable

The batteries used to charge to 55.5v and the inverter would indicate full charge.

Recently the batteries only charge to 54.5v and the inverter indicated SOC of 45%, however the batteries show 4 green lights and they begin floating indicating they are fully charged, and the charging current on solar or grid shows minimal charging.

Are my batteries showing their age or is the inverter misinterpreting the batteries SOC?

Note that the batteries have no data connection to the batteries which are simply connected to the inverter in Parallel.

Any thoughts will be appreciated as I am not very sure what to look for

Thanks

Colin

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