|
For what it's worth, "18650" is a standard and common size for a LiIon cell, it's just that Tesla is using an 18650 with specific properties.
(An 18650 is 18 mm diameter, 65 mm long. Compare to, say, a 14500, which is the same size as a AA alkaline or NiMH cell, at 14 mm diameter, 50 mm long.)
|