Ron Goldstein Rongold
Hi all,

Finally, my generator has been semi-installed. It's a model g0070431 22kw guardian. It's all hooked up electrically, but no gas line hook up, as I am waiting for the building inspector to inspect the installation. He called in sick this past Monday and told his assistant he will be in next Monday---yeah, he's really sick and he knows he will be OK next Monday !!! What a bunch of BS !!! Meanwhile, I hooked up the battery cables---I figured I will let the battery charge up, as the voltage reading on it was 11.9 volts. A couple of hours after I hooked it up, I took a voltage reading. It was 13.33 volts. This afternoon (24 hours after hooking it up), the charging voltage reading was down to 12.96 volts. Does that sound good or bad ??? I assume that as the battery charges up, the charging voltage should go down---Am I correct ???


RON
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murphy
That is fine. Once the battery is fully charged the charger stops charging and monitors the battery. The load from the controller electronics will slowly discharge the battery. When it drops far enough the charger will resume charging and charge it back up. This cycle will repeat forever.
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Ron Goldstein Rongold
As of this morning (Sunday), the voltage across the battery terminals reads 12.69 volts. Evidently, the battery is fully charged and the charger has tapered off to a minimum.
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Skip Douglas SkipD
Rongold;n58657 wrote:
As of this morning (Sunday), the voltage across the battery terminals reads 12.69 volts. Evidently, the battery is fully charged and the charger has tapered off to a minimum.


Yup. A lead-acid battery which is fully charged and has "relaxed" for several hours should have about 12.7V across its terminals. While charging is in progress, the voltage can reach 13.8V (and a bit higher with some chargers).
Skip Douglas
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