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Resting battery voltage at 12.4 = bad/dead after full charge ?

  • Thread starter Thread starter seanarthurmachado
  • Start date Start date
S

seanarthurmachado

Guest
Hi everyone,
I just wanted to confirm that my wet cell battery is going bad when at a full charge it has only 12.4 volts after a full charge.

(I ran it dead trying to get past a hard start issue and it never seems to recover)

Also I noticed that I may have chosen a wrong battery. Wally world only had a 12v 10amp instead of a 14 amp when it was bought.

Sean
 
A battery may charge and hold voltage but still be weal as far as delivering cranking amperage. The battery on my 83 Nighthawk project is a perfect example. Charges and holds 12+ volts but soon as I hit the starter button it cranks a few revolutions and then the cliiiiiiiiiickkk sound. Bad battery thats gonna be replaced tomorrow.
 
See "Quick Test" in my signature. There is a State of charge graph for lead acid batteries.
You need to load tests as Chuck suggests.
See Quick tests Steps 1 and 2 for that.
 
Try it before you replace it. 12.4 at rest is not all that bad. If it keeps that 12.4 I wouldn't worry about it. I have one battery running about that for the last 2 years.
 
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