Samsung Inr 21700 50s 5000mAh 9c Discharge Rechargeable Replacement Laptop Battery

• Customization: Available
• Type: Li-ion Battery
• Cathode Material: NCA
• Model NO.: INR21700 50S
• Rechargeable: Yes
• Size: 21700
• Standard Discharge Capacity: Typ. 5,000mAh,Charge: 2.5A,Discharge: 1A
• Rated Discharge Capacity: Min 4,800mAh,Charge:6A,Discharge: 10A
• Nominal Voltage: 3.6V
• Standard Charg: Cccv, 2.5A, 4.20 V, 250mA Cut-off
• Rated Charge: Cccv, 6A, 4.20 V, 100mA Cut-off
• Charging Time: Standard Charge:150min,Rated Charge:100min
• Internal Resistance: ≤ 10MΩ
• End of Charge Voltage: 4.20V
• End of Discharge Voltage: 2.5V
• Max. Continuous Discharge: 25A(Without Temperature Cut),45A(with 80℃ Cut)
• Max. Charge Current: 6A
• Cell Weight: 72.0g Max
• Storage Temperature for Shipping Cell: < 35ºC
• Operating Temperature (Surface): Charge:0 to 45ºC, Discharge:-40 to 60ºC
• Cycle Life: 600 Cycles
• Transport Package: Plastic Lining, Carton Packaging
• Specification: 21.25x70.00mm
• Trademark: Samsung
• Origin: China
• HS Code: 8507600090
• Production Capacity: 1, 000, 000 Units/Month
• Package Size: 53.50cm * 27.00cm * 10.00cm
• Package Gross Weight: 15.500kg

Product Description

 

Charge Current:5A   Capacity:4.93Ah 


Disharge Current:1A   Capacity:5.05Ah  Energy:18.35Wh

Disharge Current:5A   Capacity:4.96Ah  Energy:17.49Wh

 

Disharge Current:10A   Capacity:4.91Ah  Energy:16.88Wh



Disharge Current:20A   Capacity:4.81Ah  Energy:15.62Wh

 

Molicel INR21700 P50B - Complete Technical Datasheet

1. General Specifications

 

 

Parameter	Value	Test Conditions
Model Number	INR21700-50S	Manufacturer: Samsung SDI Co., Ltd.
Chemistry	Lithium-Ion (Li-ion)	Cathode: NCA / Anode: Graphite
Nominal Voltage	3.6V	Average voltage during 0.2C discharge
Rated Capacity	5000mAh (5.0Ah)	Discharged at 0.2C (1000mA) to 2.5V, 25°C ±2°C
Minimum Capacity	4850mAh	Per manufacturer tolerance
Energy	18.0Wh	Calculated (3.6V × 5.0Ah)
Internal Resistance (AC)	≤14mΩ	Measured at 100% SOC, 1kHz AC impedance, 25°C
Weight	70g ±2g	Without terminals
Dimensions	21.2mm (D) × 70.3mm (H)	Tolerance: ±0.2mm

2. Electrical Performance

Parameter	Value	Test Conditions
Standard Charge	CC-CV, 4.2V, 5.0A (1C)	Cut-off: 0.05C (250mA) / Time: ~2.5 hours
Fast Charge	CC-CV, 4.2V, 10.0A (2C)	Cut-off: 0.05C / Not recommended for daily use
Max Charge Current	15.0A (3C)	Limited by temperature rise (T ≤45°C)
Charge Temperature	0°C to 45°C	Optimal: 25°C
Continuous Discharge	45A (9C)	Max current without exceeding 80°C cell temperature
Peak Discharge (Pulse)	75A (15C) for ≤5s	25°C, 50% SOC
Discharge Cut-off	2.5V	Lower limit to prevent damage
Operating Temperature	Discharge: -20°C to 60°C	Charge: 0°C to 45°C

 

3. Cycle Life & Durability

Parameter	Value	Test Conditions
Cycle Life	≥500 cycles	1C charge/discharge (5.0A), 100% DOD, 25°C (to 80% initial capacity)
Storage Life	12 months (25°C)	Capacity recovery ≥90% after storage at 50% SOC
Self-Discharge Rate	≤3% per month	At 25°C, 50% SOC

 

4. Thermal & Safety

Parameter	Value	Test Conditions
Thermal Runaway	>150°C	Catastrophic failure temperature (per UN38.3)
Certifications	UN38.3, UL1642, IEC62133, RoHS	Complies with international transport/safety standards
Protection Devices	CID (Current Interrupt Device)	Triggers at ~150°C or 10ATM internal pressure

 

5. Discharge Curves & Efficiency

• Voltage vs. Capacity (25°C):

  • 0.2C (1000mA): ~3.6V average, 5000mAh delivered.

  • 1C (5.0A): ~3.5V average, 4950mAh delivered.

  • 10C (50A): ~3.0V average, 4800mAh delivered.

• Energy Efficiency: ~91% at 1C discharge (25°C).

 

6. Comparison with Competing Cells

Model	Chemistry	Capacity	Max Continuous	Energy Density	Cycle Life
Molicel P50B	NCM	5000mAh	45A	257Wh/kg	500 cycles
Samsung 50S	NCA	5000mAh	25A	250Wh/kg	500 cycles
LG M58T	NCM	5800mAh	20A	260Wh/kg	500 cycles

 

7. Application Notes

• Recommended Uses: High-capacity applications (EVs, energy storage, marine).

• Thermal Management: Active cooling required for >30A continuous discharge.

• Storage: Keep at 50% SOC, 15-25°C for longevity.

 

Key Takeaways

1. Ultra-High Capacity: 5000mAh with 45A continuous discharge (9C).

2. Optimized Chemistry: NCM cathode balances energy density (257Wh/kg) and power.

3. Robust Safety: Full compliance with UN/IEC standards for industrial use.