Re: For the people who always post battery questions.

Posted by John T on July 11, 2021 at 09:41:47 from (45.16.200.171):

In Reply to: For the people who always post battery questions. posted by Geo-TH,In on July 11, 2021 at 08:05:28:

Hey good Neighbor, fun post....... You state as follows....

'So voltage doesn't always tell you to condition of a battery, especially if you just charged it.' YES YOU'RE EXACTLY RIGHT

GOOD QUESTION George, the answer is NOOOOOOOOO (but you already knew that Im sure) FYI A battery experiences voltage RISE under charge but voltage SAG under a load....... Voltage alone can provide a somewhat fairly accurate, albeit not perfect, indication of its State of Charge (SOC) BUT ONLY ONCE ITS AT REST AND STABILIZED. Here's a chart I found but I cant guarantee its accuracy

Temperature: 77 degrees Fahrenheit

Percent charge Hydrometer Unloaded voltage

100 1.265 12.63 volts
75 1.210 12.30 volts
50 1.160 12.00 volts
25 1.120 11.76 volts
0 1.100 11.64 volts

In my battery testing arsenal I have a Voltmeter,,,,,,,,,,,Hydrometer (for wet FLA),,,,,,,,,,Load Tester. Using the combination OF ALL THREE one can arrive at a decent 'approximation' of the state of a battery.

I agree with you VOLTAGE ALONE DOES NOTTTTTTTTTTTTT tell the whole story but it needs to be AT REST AND STABILIZED for darn sure !!!!

Fun chatting, best wishes BE HAPPY

John T

Replies:

• Re: For the people who always post battery questions. Geo-TH,In 09:58:54 07/11/21 (0)

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