12 Volt Battery

[RCTurner]

If you use the radio or other electrical equipment at length without running the car, will the 12 v battery go dead or will the big battery keep the 12 v battery charged until they both go dead?

 

[SparkE]

If you use the radio or other electrical equipment at length without running the car, will the 12 v battery go dead or will the big battery keep the 12 v battery charged until they both go dead?

I believe that the two systems are generally separate, *however* :

- if the vehicle is turned ON, the voltage of the 12V battery is maintained from the propulsion battery

So, keep the car ON while listening to the radio if you are worried.