Comment Re:They have no choice (Score 1) 121
the move from prismatic to cylindrical enables substantially better densities
When you put a bunch of cylinders in a box you by definition have wasted space.
When you put boxes in a box you can have no wasted space.
How does using cylindrical cells improve density?
Using cylindrical cells also means having to have more parallelism to achieve a specific capacity, which means more connections, which means less reliability. This is a big part of the reason why post-collision Tesla model S batteries are unsafe for RV power storage. You can't reasonably detect bonding faults.