Hello all, Now that the weather is getting colder, energy use has been going up significantly (this is noted in other threads). My specific question is about the battery heater, and its pattern of energy usage. I got my car last march, when the weather was similar to current conditions (if not colder), and my car was running v4.4. I seem to remember that when I would get into my cold-soaked car at the end of a day's work, I would get a single very large spike of energy from the battery heater, which would eventually taper down to my driving usage. These days (running v4.5), I seem to get multiple spikes of energy usage from the battery heater (my driving would certainly not cause them in Montreal traffic). An example photo below. The three last spikes occured during my drive home, the regen was back to normal (no limiter) after the third spike: Has anyone else noticed this? Is this behaviour present on those running newer OS versions (v5.0 or 5.6)? As usual, thank you for your comments!