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I'd really like to know how using round cross section cells pack more energy density in a given volume than rectangular ones, since circles don't fit together without gaps. I can only think that the energy density of a cylindrical cell is enough to overcome this. The article doesn't explain this critical point, though.
![AA Duracell two pack small.jpg AA Duracell two pack small.jpg](https://nerdzone.uk/data/attachments/0/814-5a7f9848eca73ae1d83c99e3b97e7435.jpg)
![circles small.gif circles small.gif](https://nerdzone.uk/data/attachments/0/816-ee9f15ca12fa080a1d51a5d5440aacd1.jpg)
uk.investing.com
![AA Duracell two pack small.jpg AA Duracell two pack small.jpg](https://nerdzone.uk/data/attachments/0/814-5a7f9848eca73ae1d83c99e3b97e7435.jpg)
![circles small.gif circles small.gif](https://nerdzone.uk/data/attachments/0/816-ee9f15ca12fa080a1d51a5d5440aacd1.jpg)
The shift to cylindrical battery cells, and away from the rectangular-shaped prismatic batteries it currently uses, follows a similar move by rival Tesla Inc (NASDAQ:TSLA). Supporters of cylindrical batteries say its format - which is larger than prismatic batteries - can raise energy density and, in turn, be more cost-effective.
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BMW Unveils Plans to Use Cylindrical Batteries in New EVs From 2025 By Investing.com
BMW Unveils Plans to Use Cylindrical Batteries in New EVs From 2025