I am trying to find a point in the car where I can take upwards of 40 amps from the 12v system. I removed the back cover in the boot which covers the motor and attached my lipo battery charger to the 12v points which are on top of the motor inverter. The more current my battery charger took from the car, the higher the voltage went until the car was supplying 15.4v into the charger and the 12v battery in the car was reading 15v. It was also a warm day.
Is there any way to run high powered 12v devices from the car? The 12v points are capable of supplying 2000 watts, I read this in a datasheet from BMW.
I would add images but this forum lacks the basic feature of uploading attachments so I have put a link instead.