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18650 Battery 35E: 8A Max Output, 2.65V Cut-Off & 50g Weight What is the difference between 18650 and 21700 Li-ion cells? 21700 batteries have a higher energy density than 18650. The 18650 is one of the most popular types of rechargeable lithium-ion batteries, 18650 has a capacity of 2600-3500mAH while the 21700 can reach up to 5000mAH, which means 21700 cylindrical li-ion cells have more energy density, which can result in more runtime. What can I use instead of 18650




| Size: | 21700 |
| Style: | Flat Top |
| Protected: | NO, UNPROTECTED. This cell is unprotected and intended for use in protected battery packs only and NOT individually or as a standalone product. In order to operate safely it must have additional protection in the form of a PCB (protection circuit board) or BMS (battery management system), which is not included. |
| Nominal Capacity: | 5000mAh |
| Discharge Current: | 15A Max Continuous |
| Nominal Voltage: | 3.6V |
| Maximum Voltage: | 4.2V |
| Cutoff Voltage: | 2.5V |
| Approximate Dimensions: | 21.1mm x 70.7mm |
| Approximate Weight: | 68g |
| Origin: |
China
|
The 18650 cell is one of the most popular types of rechargeable lithium-ion batteries, and for good reason. They are readily available and reasonably priced. The 21700 lithium batteries are a more recent invention that has some clear advantages over the 18650, but it also comes with an increased price tag.
However, they both do have their advantages and drawbacks, 21700 vs 18650 battery. Which type of battery should you buy? Keep reading to learn about the differences between these two types!