Can a battery check 11.86 on a meter and still be bad? All my connections seem to be good and tight. When I turn the it shows low on gauges in the truck. Will jump start every time and showing 12v after that.
Bad battery (1 Viewer)
- Thread starter the gimpey one
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Krondor
SILVER Star
A good battery should pull around 13.5-14.5 volts when running. I have found even if I am in the low 12s, I can have trouble starting. I would throw the battery on a charger and see if you can get it up to around 13. Otherwise it looks like you may need a new battery.
The battery itself will not produce 14 or even 13 volts, running or not. You measure 13.5-14.5 volts at the battery because the alternator is charging the battery at 13.5-14.5 volts.
Random website from the internet. Fully charged voltage should be around 12.6v. Lower than that would indicate a discharged, or old, battery.
How to Test Your Auto Battery | Battery Testing & Maintenance | Autobatteries.com
Random website from the internet. Fully charged voltage should be around 12.6v. Lower than that would indicate a discharged, or old, battery.
How to Test Your Auto Battery | Battery Testing & Maintenance | Autobatteries.com
- Thread starter
- #4
So the battery was bad but under warranty. After replacing the battery the alternator was checked and the voltage regulator checked bad. Should I just have the whole alternator rebuilt?
On your 60? The voltage regulator is removable, even though it's "internally regulated". From toyota, it's expensive, might as well just get a reman alternator:
- Thread starter
- #6
Noticed today the voltage goes up when I am on the gas. Going to check the belt tension first. May just be a loose belt.
Gabe you have a crap battery. You can try putting on a 3-6 amp trickle charger and see if it will come back but most likely you have a bad cell and the battery won’t hold a charge. Like said if it doesn’t read a voltage over 12.5-6 at full charge then it’s d ad. This test is with the battery not connected to the truck.
- Thread starter
- #8
Battery has been replaced. Was under warranty. Looking into voltage regulator now but need to make sure belt isn't loose.
Over 13 at high rpm and your good. With a good battery.