I keep thinking I am imagining this, but both our Macan key fobs work great with Panasonic CR2032's, but not with any other brand. Energizer batteries will make the LED flash, but the Macan doesn't recognize it at all from any distance, including inside. Another brand won't even flash the LED. I have measured the battery voltage (3.260V), and even the diameter and thickness (exactly right, as expected).
Has anyone else ever heard of this?
Has anyone else ever heard of this?