I'm not sure. My Prius's batteries are 200+ volts and the inverter bumps it up to 400-500VAC - but there is a 12V battery in the back, and all the computers, hvac blower, stereo and other car electronics are 12 VDC. You know not that you guys are mentioning electrical automotive AC, I leave my dogs in my Prius with the AC on (and a sign that explains they are ok, a thermometer people can see, and my PHONE NUMBER) - it uses an electrical AC compressor. My Mercury Mariner Hybrid had AC that only worked while the engine was running, I was glad the Prius went the other way. What I meant was the automotive systems like the computers, controllers, stereo, nav etc are going to 24-36V. If I'm not mistaken the Tesla has a 12V battery, and 12V stereo etc... I could be wrong, but I doubt stuff runs on 375VDC, they might invert that to 120VAC and run computers... but I'm pretty sure they are 12VDC.