Battery Voltage

Voltage [V] Percentage [%] Action
<11.9V 0% Dead battery - replace.
12.0V 25% You can try chage, but is very likely dead.
12.2V 50% Need to be charged.
12.4V 75% Need to be charged.
>12.6V 100% No action needed.

Battery Running Engine Voltage

Voltage [V] State ERROR
<13.2V BAD Low voltage - need fix.
13.4V NOT BAD Low voltage, but not so bad.
14.4V GOOD Everything is great.
>14.8V BAD Too high voltage - need fix.