Does Tesla Have A 12v Battery. A Tesla car would be fine with that. Instead Tesla opted to utilize a portion of the vehicles main lithium-ion battery pack to supply 12V for the all-electric sports cars accessories and lights.
It needs a low voltage battery to manage the interlock of the high voltage battery and to provide power for the low voltage system such as the door locks communications and security systems when the HV is disconnected. Yes Tesla vehicles also have a 12v battery in addition to the drive battery. Why Teslas lead acid 12V battery needs to be lithium-ion based.
Tesla has transitioned the new Model S and Model X to a Li-ion 12-volt car battery getting rid of the lead-acid battery.
When the first-gen Roadster was designed it actually didnt have a 12V battery. The difference is that instead of an alternator charging the 12-volt battery in a traditional car in your Tesla the 12-volt battery is charged off of the cars main battery using a DC-to-DC converter. It constantly keeps and eye on the 12V battery very much because it does have some levels of computer drain on it while the car is sitting so it does have to refill the 12V from the main pack from time to time. They just dont monitor that when theyre off.
