npub17rkyfhvxxtcsu6gvyzkcpxnq739k4rwlsjed42lm85lfahkg5grqprqra4 (npub17rk…qra4) most of the packs I've seen with these cells have a bit of compression at the end of the stack.
Food for thought in this thread.
https://diysolarforum.com/threads/do-i-really-need-to-put-cells-under-compression-or-just-be-able-to-withstand-expansion.61831/