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The 12 volt system powers all the cabin electronics, lights, power windows, etc. just like in a ICE car. Then the main battery charges the 12v battery.
With one exception all EVs have 12v batteries. This allows the car to disconnect the main 350-400 volt battery so it can be serviced.
There is a 12v solenoid that connects the traction battery so you can drive.
IIRC, one or more of the Hyundai/Kia cars uses a segment of it's traction battery for its 12v service.One exception? Now I’m curious...
One exception? Now I’m curious...
When charge the battary? When car open or driving?The 12 volt system powers all the cabin electronics, lights, power windows, etc. just like in a ICE car. Then the main battery charges the 12v battery.
Hi Oliver,
Your traction battery charges the 12 volt battery when the 12 volt battery needs charging.
It charges the 12 volt whether the car is parked or in motion...
The only exception is when the traction battery is severely low on charge...
Shawn
Hi Oliver,
If you park and stay inside the car the 12 volt will still charge from the big battery when it needs to charge.
Shawn
Hello Mr Shawn ))
if i keep my car for 1 month off ? the battary will deat ?
or using like this device to charge battary ?
When charge the battary? When car open or driving?
...if i keep my car for 1 month off ? the battary will deat ?...
...
or using like this device to charge battary ?
Tesla Owner's Manual wants you to plug in when you are not driving your car.
The wall outlet power source recharges the main battery as needed.
That main battery, in turn, recharges your 12V battery as needed.
It's all automatic and fine as long as you keep your car plug in.
Your 12V is recharged from the main battery as needed and it doesn't matter whether you turn on the car or turn off the car, open the door or close the door, plug or unplug, driving or parking. It's around the clock as needed.
It would be fine as long as your car is plug in because the process is automatic.
It's only a problem when you don't plug in for a while and the main battery will be depleted. When the main battery is low, it will no longer charge your 12V and your 12V will be dead.
Your plan of saving your 12V battery by injecting a 12V source outside of the car's automatic system which is called BMS--Battery Management System is not approved.
Since it is outside of the BMS, it might harm your 12V battery instead of saving it.
Correct. The first 500 Roadsters did not have a 12V battery.The original Roadster did not have a 12V battery until 2.0
As others have stated, the 400V main pack in your Tesla keeps the separate 12V battery charged. And it is important to keep your Tesla plugged in, even to a 12V power outlet if that is all you have available.that mean if i left car with out charge will lost 12v charge for long time . ?