21700 is a cylindrical cell format, not a single chemistry or performance level. For B2B battery-pack projects, choose the exact model based on capacity, required current rating, pack design, destination and document requirements rather than capacity alone.
21700 model comparison
| Model family | Capacity listed | Current rating listed | Model pages |
|---|---|---|---|
| Samsung 30T / 40T / 45T | 3000?4500mAh | 35A | 30T, 40T, 45T |
| Samsung 48G / 48X | 4800mAh | 10A | 48G, 48X |
| Samsung 50E / 50GB / 50S / 51X | 5000?5100mAh | 5C?25A | 50E, 50GB, 50S, 51X |
| Molicel P45B / P50B | 4500?5000mAh | 30A?50A | P45B, P50B |
| EVE 40PL / 50PL / 58E | 4000?5800mAh | 10A?12C / 70A by model | 40PL, 50PL, 58E |
How to select a 21700 cell for a battery pack
Start with the exact battery-pack voltage, series and parallel configuration, required current, expected runtime, installation space and operating conditions. A higher capacity does not automatically make a cell suitable for a higher-current application. The published current rating is model-specific and must be checked against the current manufacturer documentation and the completed pack design.
What to include in a 21700 B2B inquiry
Send the cell model, target quantity, destination country, application, pack configuration and any document requirements. This allows model-specific availability, applicable documents and delivery options to be confirmed without assuming stock or delivery timing.
Browse all 21700 battery cells or request technical matching.