Samsung INR21700-50GB 4900mAh 9.7A 21700 battery cell

Technical specifications:

Manufacturer: SAMSUNG
Model: INR21700-50GB
Technology: Lithium-ion (Li-ion)
Charging time: 3 hours
Maximum charging current: 4.9 A
Minimum capacity: 4800 mAh
Nominal capacity: 4900 mAh
Maximum voltage: 4.2 V
Nominal voltage: 3.6 V
Cut-off voltage: 2.5 V
Maximum continuous discharge current: 9.7 A
Operating temperature: -20°C to 60°C
Dimensions: 21.0 mm ± 0.2 mm; height: 70.0 mm ± 0.2 mm
Weight: 68 g

The SAMSUNG INR21700-50GB is a high-quality industrial lithium-ion (Li-ion) cell featuring a 4900 mAh capacity and 3.6 V voltage. It has low internal resistance, and the maximum discharge current reaches 9.7 A. The cell operates stably across a wide temperature range, ensuring high performance in both standard and moderate-power-demand devices. It is ideally suited for power tools, portable equipment, and light electric vehicles. It is recommended to charge using high-quality chargers that feature charge process control and a maximum cut-off voltage of 4.2 V.

This cell does not have an integrated PCM protection circuit; it may only be used if a PCM/BMS protection module is installed.

Note! Improper use of lithium-ion cells poses a serious risk.
Before use, every cell or battery pack must be equipped with PCM/BMS protection.
Improper use or short-circuiting can cause a fire or explosion.
Cells must be used strictly within the parameters specified in the manufacturer's technical datasheet.
Do not install cells into devices or chargers with reversed polarity.
Prevent short circuits by avoiding contact with metal objects.
Use protective cases during storage. Do not disassemble or deform the cells.
Do not use cells with damaged insulation or without insulation.
Do not overcharge or over-discharge the cells.
Keep cells away from water and high temperatures.
Do not solder.
Avoid vibration and excessive pressure.
Keep away from fire.
Keep out of reach of children.
Do not use modified or damaged chargers.
Do not leave cells charging for more than 12 hours.
Store in a cool, dry, and well-ventilated place. Dispose of used batteries in accordance with local regulations.