Quote:
Originally Posted by tomkatb
Defective voltmeter and or operator error? Both?
A fully charged battery is 12.6 volts. Not 12.9.
|
Note there is a temperature dependence. Found this chart for RV Deep Cycle batteries a while ago. At 100 degrees Fahrenheit per this chart, 12.9 volts equates to 100% charge.
Agree with the comments stating that a load test is necessary to determine the state of your battery.
FYI