Quote:
Originally Posted by FunfDreisig
Measuring the voltage on the battery of a E70 is getting way too close to the issues in particle physics, where the mere act of observation changes the result Funf Dreisig
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I've got an earlier version of this, and it works on my 2004 Z4:
CarChip® Pro by Davis
You plug it into the OBD-II socket and it will monitor any 4 parameters of you choice and store a time curve that you can download to your computer. I've used it on the Z4 to monitor battery voltage while driving.