Product description
21700 Li-ion battery cell with built-in protection circuit that safeguards against overcharging, overheating, overcurrent, deep discharge and short circuit. Features: long life and low self-discharge. Suitable for use in flashlights, vapes, etc. Manufactured by Xtar and based on Samsung's INR21700-50T cell. Battery cells with built-in protection circuit can be used in series but should be charged individually (charge in battery chargers with separate charging channels). Keep in mind that battery cells with the 21700 form factor and have built-in protection circuit will be slightly longer/higher, about 3-4 mm.
Specifications:
- Nominal capacity: 4900 mAh (min 4800 mAh)
- Nominal voltage: 3.7 V
- Max charging voltage: 4.2V
- Cutoff voltage: 2.5V
- Max charging current: 4900 mAh (1C)
- Max discharge current: 10A
- Weight: 71g
- Operating temperature charging: 0 to 45 °C.
- Operating temperature discharge: -20 to 60 °C.
- Terminals: Standard battery poles
Dimensions:
- Height: 74.8 mm
Diameter (Ø): 21.4 mm
Safety recommendations:
- Do not discharge the cell with currents (A) higher than those indicated in the specification
- Do not charge the cell with currents (A) higher than those listed in the specifications
- Do not short-circuit the cell
- In battery packs (series connection), do not mix cells of different type, manufacture or degree of usage
- Use the cell within the temperatures specified by the manufacturer
- Do not use, recycle cells with physical or functional damage
- Do not allow contact with water or other liquids
- Never incorrectly polarize the cell
- Never solder directly to the cell's poles, use a battery holder
