LG Inr 21700 M50lt 4800mAh Li-ion 3.7V 21700 3c Discharge Rechargeable Solar Power Battery

• Customization: Available
• Type: Li-ion Battery
• Cathode Material: NCA
• Model NO.: LG INR 21700 M50LT
• Rechargeable: Yes
• Size: 21700
• Nominal Voltage: 3.69V
• Max. Charge Current: 0.7c (3,360mA)
• Charge Voltage: 4.2V
• Discharge Cut off Voltage: 2.5V
• Max. Discharge Current: 3c
• Safety Over Voltage: Max 4.25V
• Safety Under Voltage: Min 2.00V
• Internal Resistance: ≤ 15MΩ
• End of Charge Voltage: 4.20V
• Max. Continuous Discharge: 15A
• Cell Weight: 67.5g Max
• Storage Temperature for Shipping Cell: < 35ºC
• Operating Temperature (Surface): Charge:0 to 55ºC, Discharge:-30 to 70ºC
• Cycle Life: 600 Cycles
• Transport Package: Plastic Lining, Carton Packaging
• Specification: 21.25x70.00mm
• Trademark: LG
• Origin: China
• HS Code: 8507600090
• Production Capacity: 1, 000, 000 Units/Month
• Package Size: 53.50cm * 27.50cm * 10.00cm
• Package Gross Weight: 15.500kg

Product Description

Charge Current:2.5A, Capacity:4.76Ah, Energy:18.41Wh.


Discharge Current:1.5A, Capacity:4.74Ah, Energy:17.44Wh.

Discharge Current:10A, Capacity:4.70Ah, Energy:15.85Wh.


Discharge Current:15A, Capacity:4.67Ah, Energy:15.23Wh.

LG INR21700 M50LT - Complete Technical Datasheet

1. General Specifications

 

 

Parameter	Value	Test Conditions
Model Number	INR21700 M50LT	Manufacturer: LG Energy Solution Ltd.
Chemistry	Lithium-Ion (Li-ion)	Cathode: NCM / Anode: Graphite
Nominal Voltage	3.63V	Average voltage during 0.2C discharge
Rated Capacity	4800mAh (4.8Ah)	Discharged at 0.2C (1000mA) to 2.5V, 25°C ±2°C
Minimum Capacity	4700mAh	Per manufacturer tolerance
Energy	18.15Wh	Calculated (3.63V × 5.0Ah)
Internal Resistance (AC)	≤13mΩ	Measured at 100% SOC, 1kHz AC impedance, 25°C
Weight	69g ±2g	Without terminals
Dimensions	21.1mm (D) × 70.1mm (H)	Tolerance: ±0.2mm

 

2. Electrical Performance

 

 

Parameter	Value	Test Conditions
Standard Charge	CC-CV, 4.2V, 2.5A (0.5C)	Cut-off: 0.05C (250mA) / Time: ~3 hours
Fast Charge	CC-CV, 4.2V, 5.0A (1C)	Cut-off: 0.05C
Max Charge Current	6.0A (1.2C)	Limited by temperature rise (T ≤45°C)
Charge Temperature	0°C to 45°C	Optimal: 25°C
Continuous Discharge	14.7A (2.94C)	Max current without exceeding 80°C cell temperature
Peak Discharge (Pulse)	29.4A (5.88C) for ≤3s	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	≥600 cycles	0.5C charge/1C discharge, 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 + PTC	Current interrupt device (CID) and thermal fuse (PTC) integrated

 

5. Discharge Curves & Efficiency

• Voltage vs. Capacity (25°C):

  • 0.2C (1000mA): ~3.63V average, 5000mAh delivered.

  • 1C (5.0A): ~3.55V average, 4950mAh delivered.

  • 3C (15A): ~3.30V average, 4850mAh delivered.

• Energy Efficiency: ~95% at 0.5C discharge (25°C).

 

6. Comparison with Competing Cells

 

 

Model	Chemistry	Capacity	Max Continuous	Energy Density	Cycle Life
LG M50LT	NCM	4800mAh	14.7A	263Wh/kg	600 cycles
Samsung 50S	NCA	5000mAh	25A	257Wh/kg	500 cycles
Molicel P50B	NCM	5000mAh	45A	257Wh/kg	500 cycles

 

7. Application Notes

• Recommended Uses: E-bikes, portable power stations, low-to-medium drain devices.

• Thermal Management: Passive cooling sufficient for ≤10A continuous discharge.

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

 

Key Takeaways

1. High Capacity: 5000mAh with optimized energy density (263Wh/kg).

2. Moderate Discharge: 14.7A continuous current suits medium-drain applications.

3. Safety Features: Integrated CID and PTC protection.