Samsung INR21700-50E – Best 5000 mAh lithium-ion cell

Introduction – Why choose the Samsung INR21700-50E?

The growing demand for high-performance lithium-ion cells has users looking for solutions that offer both long life and high voltage stability. One of the most popular and highly regarded cells on the market is the Samsung INR21700-50E – a 21700 format battery with an impressive 5000mAh capacity.

Thanks to the use of modern manufacturing technologies, this cell stands out for its excellent performance, high capacity and ability to operate at high load currents. It is the perfect choice for users who require a reliable and long-lasting energy source for applications ranging from e-mobility to energy storage.

Technical specifications of the Samsung INR21700-50E cell

The Samsung INR21700-50E is one of the most advanced cells in its category, as evidenced by its detailed technical specifications:

• Cell type: Lithium-ion (Li-Ion)
• Format: 21700 (diameter 21 mm, height 70 mm)
• Rated capacity: 5000mAh
• Minimum capacity: 4900mAh
• Nominal voltage: 3,6V
• Maximum charging voltage: 4,2V
• Final discharge voltage: 2,5V
• Standard charging current: 2,45A
• Maximum charge current: 4,9A
• Maximum continuous discharge current: 9,8A
• Maximum pulsed discharge current: 14,7A
• Cycle life: over 500 charge/discharge cycles under optimal conditions
• Internal resistance: <20mΩ
• Operating temperature: -20°C to +60°C
• Weight: approx. 69 g

With such an advanced specification, the Samsung INR21700-50E is widely used in devices that require high power, stable voltage and high capacity.

Applications of the Samsung INR21700-50E – Where will it perform best?

1. electric bicycles and electric scooters

High-quality 21700 cells are widely used in e-mobility, and the Samsung INR21700-50E model is one of the most recommended. With a capacity of 5000mAh, these cells provide longer rides on a single charge, increasing user convenience. In addition, the voltage stability translates into smooth and reliable operation of the electric motor.

2 Energy storage and solar systems

Samsung INR21700-50E cells are well suited as components for domestic and industrial energy storage. Due to their high capacity and long life, they are ideal for photovoltaic systems where stability and long life are key.

3 High-power torches

Professional LED torches require a reliable power source with high capacity. Thanks to its high capacity and low self-discharge, the Samsung INR21700-50E cell ensures long operating times even under extreme conditions.

4 Power tools and industrial equipment

Equipment such as cordless drills, screwdrivers and other power tools require cells with high capacity and high current output. The Samsung INR21700-50E guarantees reliability, making it the ideal choice for professional and amateur repair work.

5 RC models and drones

Drones and remote-controlled models require powerful batteries capable of handling heavy loads. The Samsung INR21700-50E, with its high maximum discharge current, is ideal for advanced model applications.

Comparison of the Samsung INR21700-50E with other cells

Cell	Capacity (mAh)	Maximum current (A)
LG M58T	5800	12,5
Samsung 50S	5000	35
Samsung 50E	4930	10
EVE INR21700-40P	4000	40
BAK 21700CG-50	5000	15

The Samsung INR21700-50E offers an optimum balance between high capacity and relatively high discharge current, making it a versatile solution for a variety of applications.

The biggest advantages of the Samsung INR21700-50E

1. high capacity and performance

With 5000mAh, the Samsung INR21700-50E cell offers a longer operating time compared to standard 18650 batteries. This means that devices using this battery can run longer on a single charge.

Voltage stability

One of the key strengths of the Samsung INR21700-50E cell is its voltage stability during discharge. This ensures that devices operate predictably and without interference.

3 Safety of use

Samsung is a reputable manufacturer of lithium-ion cells, which guarantees a high level of safety. The INR21700-50E cell is resistant to overheating and has built-in protection mechanisms to prevent short circuits and overcharging.

Long service life

When used correctly, the Samsung INR21700-50E cell can withstand more than 500 charge/discharge cycles without a significant drop in capacity, resulting in long-lasting and economical use.

Compatible with a wide range of devices

Thanks to the standard 21700 format, the Samsung INR21700-50E cell can be used in a wide range of devices – from e-bikes to drones and energy storage systems.

Summary – Is the Samsung INR21700-50E worth choosing?

If you are looking for a powerful, durable and safe lithium-ion cell, the Samsung INR21700-50E is one of the best choices on the market. Its excellent technical performance, voltage stability and wide range of applications make this cell ideal for professional and home users.

With its long service life, high capacity and safe use, the Samsung INR21700-50E meets the requirements of even the most demanding users.

Frequently asked questions

FAQ – Samsung INR21700-50E

1 – What is the Samsung INR21700-50E cell?

The Samsung INR21700-50E is a lithium-ion cylindrical cell in the 21700 format with a capacity of 5000mAh, a nominal voltage of 3.6V and a maximum continuous discharge current of 9.8A. It is used in e-mobility, torches, power tools, energy storage systems and RC modelling.

2 What are the dimensions and weight of the Samsung INR21700-50E?

The cell has a diameter of 21.25 mm ± 0.1 mm and a height of 70.8 mm ± 0.15 mm. Its weight is approximately 69 g.

3. what is the charge and discharge voltage of the cell?

• Nominal voltage: 3,6V
• Maximum charge voltage: 4,2V
• Minimum discharge voltage: 2,5V

4 Does the Samsung INR21700-50E cell have safety features?

No, the cell does not have built-in protection. When using it in applications requiring protection against overcharge, deep discharge or short circuit, external BMS (Battery Management System) must be used.

5 – How long does the Samsung INR21700-50E cell last?

When used correctly and charged according to the manufacturer’s recommendations, the cell can last for more than 500 charge/discharge cycles while maintaining high efficiency.

6. can I use the Samsung INR21700-50E in an e-bike or electric scooter?

Yes, the cell is often used in e-bike and electric scooter batteries due to its high capacity and stable voltage. However, it is recommended to use it in kits with a suitable BMS.

7 What are the charging recommendations for this cell?

• Standard charging current: 2,45A
• Maximum charging current: 4,9A
• Do not exceed 4.2V when charging
• Use a charger designed for Li-Ion cells
• Do not leave the cell unattended during charging

8. can the Samsung INR21700-50E be discharged with a high current?

Yes, the cell supports a maximum continuous discharge current of 9.8A and pulsed up to 14.7A. This makes it well suited to devices requiring higher power.

9. is the Samsung INR21700-50E suitable for torches?

Yes, the cell is an excellent choice for high-power torches, offering long runtime and stable voltage.

10. can I use this cell in power tools?

Yes, but a cell with a higher maximum discharge current (e.g. Molicel P42A) will work better in power tools with high current consumption. The Samsung INR21700-50E, on the other hand, is an ideal choice for tools with moderate power requirements.

11. how to store the Samsung INR21700-50E?

• Store at a temperature of 10-25°C
• Do not store fully charged or fully discharged cells for long periods of time
• Protect from humidity, temperatures above 60°C and direct sunlight
• Store in special cell containers to prevent short circuits

12. can the Samsung INR21700-50E be transported by air?

Yes, but certain IATA regulations for transporting lithium-ion batteries must be met. A limited number of cells can usually be carried in hand luggage, but it is recommended that you check your airline’s regulations.

13. can this cell be soldered?

Soldering directly on the cell is not recommended, as high temperatures can damage the internal structure of the cell and lead to failure or explosion. Instead, spot welding of nickel strips should be used.

14 What are the differences between the 21700 and 18650 cell?

Feature	21700 (Samsung INR21700-50E)	18650 (e.g. Samsung 30Q)
Diameter	21 mm	18 mm
Height	70 mm	65 mm
Capacity	5000mAh	3000mAh
Maximum discharge current	9,8A	15A
Cycle life	500+	300+

The 21700 cells offer greater capacity and energy efficiency compared to the older 18650 standard.

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