Today, I modeled up a little battery meter and implemented it into the dash. I tried to calibrate it as well as possible, it's reasonably accurate. I think it looks pretty good!
Other changes for today include: decreasing the window tint on the interior glass, and increasing the battery pack size to 90kW.
Can you please upload the images as attachments instead of using a 3rd party service (Imgur)? Then they will be stored here forever and won't be removed if the Imgur goes down.
It works by using an oversized mapping of the fuel (battery) needle, positioned, sized, and rotated just right with a lot of trial and error to test calibration. The mapping is placed on some mesh inside the white outer border.