Tom2023
Guest
I am trying to sort out the battery power in my Motorhome. I don’t have a circuit diagram and the wiring is a bit of a Rat’s Nest and it disappears into the bodywork just as it gets interesting.
This is how I think it works…
When the Engine is running the Engine battery and the Leisure battery are charged in parallel by the alternator.
When the ignition is turned off the Engine battery is then isolated from the Leisure battery so it is not drained while watching TV?
When the ignition is turned on then the Van is then isolated from the Leisure battery. The Leisure battery & Engine battery are then back in parallel and the Leisure battery is charged up from the alternator.
I think that’s how it works but if it does then wouldn’t a flat Leisure battery be a drain on the Engine battery when it’s trying to turn the engine over?
Is this right or is it more sophisticated?
This is how I think it works…
When the Engine is running the Engine battery and the Leisure battery are charged in parallel by the alternator.
When the ignition is turned off the Engine battery is then isolated from the Leisure battery so it is not drained while watching TV?
When the ignition is turned on then the Van is then isolated from the Leisure battery. The Leisure battery & Engine battery are then back in parallel and the Leisure battery is charged up from the alternator.
I think that’s how it works but if it does then wouldn’t a flat Leisure battery be a drain on the Engine battery when it’s trying to turn the engine over?
Is this right or is it more sophisticated?