Topics Covered
1. Lithium-Ion Battery Cell Types
2. Cylindrical Cells
3. Pouch Cells
4. Prismatic Cells
5. Cell Sizes - 18650 and 21700
6. Thermal Performance
7. Specific Energy, Energy Density and Power Capacity

In this video, Erik Stafl, President of Stafl Systems, discusses the different lithium ion battery cell types and form factors. Three primary form factors are common in the industry today: cylindrical cells, pouch cells, and prismatic cells. This video discusses 18650 and 21700 cells and the benefits and downsides of using a commodity cell, including thermal performance and heat distribution. Pouch cells are thin pouches with anode and cathode layers stacked inside the cell and can be easier to incorporate thermal rejection methods. Erik then discusses the differences in cycle life with the different cell types.

This video discusses and defines key figures of merit, including specific energy (Wh/kg), energy density (Wh/L), power capability (W/kg or W/L), and rate capability plots (voltage and depth of discharge).

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