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Old 10-08-2013, 03:43 PM   #1
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Gsnedike's Avatar
Phoenix , Maryland
Join Date: Aug 2011
Posts: 9
Battery question

What should my voltage read when the battery is fully charged and also while charging?

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Old 10-08-2013, 03:49 PM   #2
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1995 30' Excella
Logan , New Mexico
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Posts: 90
A fully charged battery should be 13 volts or above. While charging-will vary. I always take the leads off the charger and then check the battery. Hope this helps.

Charles & Annette
WBCCI # 1407 -- Member 4CU
1995 31' Excella
Dodge 2500 Diesel-Tow Vehicle
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Old 10-08-2013, 04:28 PM   #3
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1975 Argosy 24
1976 Argosy 28
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A "wet cell" lead-acid battery that's fully charged and hasn't just been removed from the charger moments ago should be about 12.7v. It'll hold a higher surface charge for some time after being removed from a charger if it has no load, but if you let it sit for a few hours or briefly put a load on it, you should see 12.7v.

How much voltage you see during charging will depend on your charger.

Google "12v battery state of charge" for charts that will show you the state of charge based on battery voltage.

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