Molicel 21700 P42A 4200mAh 10c High Discharge Rate Rechargeable Superior Energy Lithium Ion Battery
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Product Details
| Customization: | Available |
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| Type: | Li-ion Battery |
| Cathode Material: | NCM |
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Basic Info.
- Model NO.
- INR21700 P42A
- Rechargeable
- Yes
- Size
- 21700
- Rated Charge
- Limiting 4.2A
- Rated Discharge
- Constant 0.84A Discharge Until 2.5V at 23ºC
- Nominal Voltage
- 3.6V
- Rated Capacity
- 4.0ah (Minimum) 4.2ah (Typical)
- Shipping Voltage
- ≥ 3.45V
- Internal Resistance
- ≤ 15MΩ
- End of Charge Voltage
- 4.20V
- End of Discharge Voltage
- 2.5V
- Charging Time
- 90 Min
- Maximum Charging Current
- 8.4A
- Maximum Discharging Current
- 45A (with 75 23ºC Temp. Cut)
- Cell Weight
- 48.0g
- Storage Temperature for Shipping Cell
- < 35ºC
- Operating Temperature (Surface)
- Charge:0 to 45ºC, Discharge:-40 to 60ºC
- Cycle Life
- 500 Cycles
- Transport Package
- Plastic Lining, Carton Packaging
- Specification
- 21.40x70.00mm
- Trademark
- Molicel
- Origin
- China
- HS Code
- 8507600090
- Production Capacity
- 1, 000, 000 Units/Month
Packaging & Delivery
- Package Size
- 30.00cm * 30.00cm * 9.00cm
- Package Gross Weight
- 7.500kg
Product Description
Applications:Power tools,drones,model aircraft,FPV drones,agricultural drones,remote-controlled aircraft,model boats,model cars,robots,submarines,and more.
Discharge Current:4.2A, Capacity:4.04Ah, Energy:14.58Wh.
Discharge Current:20A, Capacity:3.94Ah, Energy:13.27Wh.
Discharge Current:1A, Capacity:4.08Ah, Energy:14.97Wh.
Discharge Current:4.2A, Capacity:4.04Ah, Energy:14.58Wh.
Discharge Current:10A, Capacity:4.00Ah, Energy:14.02Wh.
Discharge Current:20A, Capacity:3.94Ah, Energy:13.27Wh.
Molicel INR21700 P42A - Complete Technical Datasheet
1. General Specifications
| Parameter | Value | Test Conditions |
|---|---|---|
| Model Number | INR21700 P42A | Manufacturer: E-One Moli Energy Corp. (Molicel) |
| Chemistry | Lithium-Ion (Li-ion) | Cathode: NCM / Anode: Graphite |
| Nominal Voltage | 3.6V / 3.7V | Average voltage during 0.2C discharge |
| Rated Capacity | 4200mAh (4.2Ah) | Discharged at 0.2C (840mA) to 2.5V, 25°C ±2°C |
| Minimum Capacity | 4100mAh | Per manufacturer tolerance |
| Energy | 15.54Wh | Calculated (3.7V × 4.2Ah) |
| Internal Resistance (AC) | ≤9mΩ | Measured at 100% SOC, 1kHz AC impedance, 25°C |
| Weight | 69g ±1.5g | 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, 4.2A (1C) | Cut-off: 0.05C (210mA) / Time: ~2.5 hours |
| Fast Charge | CC-CV, 4.2V, 8.4A (2C) | Cut-off: 0.05C / Not recommended for daily use |
| Max Charge Current | 12.6A (3C) | Limited by temperature rise (T ≤45°C) |
| Charge Temperature | 0°C to 45°C | Optimal: 25°C |
| Continuous Discharge | 45A (10.7C) | Max current without exceeding 80°C cell temperature |
| Peak Discharge (Pulse) | 75A (17.9C) 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 | ≥700 cycles | 1C charge/discharge (4.2A), 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
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Voltage vs. Capacity (25°C):
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0.2C (840mA): ~3.6V average, 4200mAh delivered.
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1C (4.2A): ~3.5V average, 4150mAh delivered.
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10C (42A): ~3.1V average, 4000mAh delivered.
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Energy Efficiency: ~93% at 1C discharge (25°C).
6. Comparison with Competing Cells
| Model | Chemistry | Capacity | Max Continuous | Energy Density | Cycle Life |
|---|---|---|---|---|---|
| Molicel P42A | NCM | 4200mAh | 45A | 225Wh/kg | 700 cycles |
| Samsung 40T | NCA | 4000mAh | 35A | 252Wh/kg | 500 cycles |
| Sony VTC6A | NCM | 4000mAh | 40A | 240Wh/kg | 600 cycles |
7. Application Notes
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Recommended Uses: High-drain devices (drones, power tools, EVs).
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Thermal Management: Active cooling suggested for >30A continuous discharge.
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Storage: Keep at 50% SOC, 15-25°C for longevity.
Key Takeaways
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Ultra-High Power: 45A continuous discharge (10.7C) leads the 21700 class.
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Balanced Performance: Optimized NCM cathode for energy density and thermal stability.
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Certified Safety: Meets UL/IEC standards for industrial applications.
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