uksuntimes
New Member
I'm curious about if I have completed my install correctly. So here is the simplified version (I also have solar but am excluding from this for now for simplicity)
The MPPT has a function where it will use the solar input to trickle charge the car battery if the house battery is at 100%. I am assuming that this will only work if I have completed the 'ground' connection to the chassis as well, but am worried I might create some kind of loop or phantom power drain of the main starter battery as a result.
- Car battery + goes to Renogy MPPT/DC charger on the Alternator+ Input
- MPPT/DC charger is connected to + Positive Bus Bar and - Negative Bus bar
- LifePo4+ goes to + Positive Bus bar and - Negative Bus bar
- Currently, I then also connect the negative bus bar to the car chassis/ground as well
- There is a wire that tells the charger when the engine is running, and then proceeds to use the alternator to charge from. When the car is off, this stops.
The MPPT has a function where it will use the solar input to trickle charge the car battery if the house battery is at 100%. I am assuming that this will only work if I have completed the 'ground' connection to the chassis as well, but am worried I might create some kind of loop or phantom power drain of the main starter battery as a result.