Anyone Tried Solar Trickle Charging 12v Battery?

[richardw0000]

Hi everyone,
I'm thinking that maybe it is possible to reduce the vampire load by using one of those solar panels you can get for a car to trickle charge the 12v battery. They cannot be left plugged in while a traditional car is running. I know it is fairly easy to mitigate this with a relay in a typical car, but how might this affect the Tesla 12v system? I would like to be able to extend the life of the 12v battery by reducing the cycling on it.

Apologies if this has been discussed before. A forum search did not turn up anything.

 

[jerry33]

I don't see there's much point to it. The 12V battery now lasts much longer than the initial ones did.

 

[brkaus]

If they can't be plugged in when a ice is running, they also shouldn't be used on a tesla when it the dc to dc is on. That would be while running or when it kicks in to recharge the 12v while sitting.

 

[richardw0000]

I was looking for someone who has a little expertise on the electrical system of the car. I'm thinking a simple diode isolation will protect the solar panel, and a relay tied to a 12v circuit that open when the DC-DC converter comes on would protect the DC-DC converter.