How many volts should a school bus have?
How many volts should a school bus have? 12.4 volts before you crank. 14.4 running is optimal. I don't like to see below 12v or above 15, usually makes for trouble.
Are buses 12 or 24 volt?
The 12-volt rating of a battery is the nominal voltage and it may be slightly higher or lower depending on the state of charge and loads. We sometimes use 24V battery systems in larger trucks and busses due to the vehicle's higher power needs and long cable runs.
What is the voltage of a school bus battery?
You should be reading about 13.5 volts on a good battery. 13.5 with engine running. 12.4 or . 6 is fine but you could have a dead cell.