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How is a 10000mAh pouch more energy dense than an 18650?
by jsisto 11d ago
How is a 10000mAh pouch more energy dense than an 18650?
- bri3d 11d agoBy not having void air space in between cylindrical cells like you'd get with two 18650s? It's mostly just a matter of packaging. Pouches can be made to have better volumetric density than cylindrical cells quite easily, which is why laptops aren't generally full of cylinder cells anymore; the challenge is just providing them enough external support/compression and swelling allowance, which can be accomplished through chassis design.
- iamnothere 11d agoPouch cells are lighter per mAh due to the lack of metal casing. But more than the casing, the form factor is better for a pocketable device. The cylindrical form factor sticks out, usually wastes some space, and can’t be neatly tucked behind a board or display.