> ... batteries that use flat cells (called "Pouch Batteries") ... They are but I think the more official/rigorous term is "prismatic cell". https://www.googl

> ... batteries that use flat cells (called "Pouch Batteries") ... They are but I think the more official/rigorous term is "prismatic cell". https://www.google.com/search?q=prismatic+cell https://www.google.com/search?q=prismatic+cell (As opposed to cylindrical like 18650 et. al.)