The announcement that Tesla will offer an optional range extender battery pack for the Cybertruck surprised many at the Nov. 30 delivery event, but several questions still remain unanswered.
We still don't know if (and how!) the additional battery pack can be lifted in and out of the truck bed, or how much it weighs for that matter. We don't know its storage capacity either, although we calculated that it would need around 47 kilowatt-hours of usable storage to enable some 130 miles of additional range to the Cybertruck AWD's stated 340 miles.
