Sandy Munro Explains Tesla's Battery Tech And Compares It To The Competition

Sandy explains the difference in cylindrical, prismatic and pouch cells.

Sandy Munro is back with his latest Tesla Model Y tear down video, and this time he not only dissects the Y, but he also explains the difference in cylindrical, prismatic, and pouch cells used in electric car batteries. 

As good as all of Munro’s Model Y videos have been, this might be my personal favorite because he gives a side by side comparison of the battery cells Tesla uses, with those used in electric vehicles made by other companies. We get to see what BMW uses in the BMW i3, and what GM uses in the Chevy Bolt EV. 

Sandy starts off by showing how similar the Model Y’s battery pack is to the Model 3’s. He notes that both cars have 4,416 battery cells in their respective battery packs. Tesla uses small, cylindrical 2170 cells for both the Model 3 and Model Y, however, they are actually slightly larger than the ones they use for the Model S and Model X. The cells in the Model Y are called “2170” because they measure 21 mm in width and 70 mm in length. 

Munro explains that Tesla connects 46 cells into what they call a “brick”. The Model 3 and Model Y both have 96 bricks in their pack (46 x 96 = 4,416 total cells). Lithium-ion batteries have many different cell compositions, and he explains that Tesla uses nickel cobalt aluminum (NCA) cells. 

Sandy points to the opened Model Y battery pack, exposing the individual cells