Battery Building ToolsCell Database Highest Capacity 21700 Cells
Highest Capacity 21700 Cells
The 21700 format packs more energy than 18650 in roughly the same space. If your build has room for 21700s, these are the cells that give you the most runtime. Capacity and discharge trade off against each other, so check both columns before committing to a cell.
| # | Cell | Capacity mAh | Nominal V | Rated A | Mooch A | IR mΩ | Wh | Chemistry | Format | |
|---|---|---|---|---|---|---|---|---|---|---|
| No cells match these filters. | ||||||||||
No cells match these filters.
Rated A is the manufacturer's continuous figure; Mooch A is independently measured and usually lower. Where they disagree, size to Mooch.
Found your cell? Drop it into the Pack Planner to size your pack, or use the Battery Pack Calculator to figure out how many cells you need.