yobigd20
Well-Known Member
Will this mess up battery range?
My guess would be that the impact would be relatively small. If you have a 1200W system, remember that is peak power. It's the avg, or 'nominal' watt usage per hour. Lets say nominal (continuous) is 600W/hr. If you drive and have that on for 4 hrs, that is 2.4kWh. If you have an 85kWh battery...does it impact range? Sure, but it's relatively negligible.
What you don't want to do is kill the small 12V battery that would make the Model S go 'dead'. Therefore, I would assume there is at least another huge 12V battery and a few farad capacitors to prevent any of that from happening.
I've hooked up several of these systems in previous cars myself, all self-taught. So I'm no expert, I'd love to hear other more experienced opinions.