Maybe there’s something wrong with my battery but just after I got the car I briefly (2 minutes) saw it was doing 4.2, then it settled down for a week to 3.8/3.9. That was with me always driving in eco mode, feathering the accelerator, heating completely off and radio at moderate level… and only me in the car. It has recently settled down at 3.3. For the last couple of days I am having to make a couple of 50 mile round trip runs to the hospital every day and I have had to put the heater on drivers side only at 22.5 on fan speed 2 and it is fluctuating between 2.9 and 3.0. I am in normal driving mode to get the heater to work properly. I started off yesterday at 83% battery, did the first trip and the predicted miles on the gauge was dropping like a stone. When I got home I was down to 46% with 90 miles showing on the gauge. I had to top the battery up in peak electricity time to comfort myself that I would make the second trip OK. God forbid if I get the dreaded call from the hospital at 1am that I need to get back there asap! I had it on charge again overnight and I am up to 95%. I shall again watch with interest how it performs today. TBH, I’m not gonna risk getting down to 20% battery on the road as I live in a rural Northern Ireland location with few charging options, but surely I can assume that I could cover 100 miles comfortably from 83% to 20% (63% battery power). It’s not even winter yet!….
You would be better doing a proper calculation, than paying too much attention to the GOM!
Did you spec the Heatpimp?