INR21700-RS50 21700 Battery Cell – 4950mAh, 70A High Drain, 15A Fast Charge
Looking for a high-performance 21700 battery cell for demanding battery packs? The INR21700-RS50 from Jiangsu Reliance Energy is a 5000mAh-class 21700 lithium-ion battery built for high capacity, high drain, and fast charging.
It delivers a minimum 4950mAh capacity, up to 70A continuous discharge, and 15A fast charge. With low ACIR and strong cycle life, it is ideal for EV battery packs, power tools, e-bikes, drones, vacuum cleaners, and energy storage systems.
We supply genuine INR21700-RS50 21700 cells at competitive wholesale prices. Large stock is available now. Contact us for bulk pricing and fast delivery.
Key Features
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21700 lithium-ion battery cell
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4950mAh minimum capacity / 5000mAh-class
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70A maximum continuous discharge
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15A maximum continuous charge
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3C fast charge at 15A
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Low ACIR: ≤4.0mΩ
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Nominal voltage: 3.6V
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Long cycle life: up to 1500 cycles at 90% DOD
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Wide discharge temperature range: -40°C to 80°C
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Suitable for high-drain 21700 battery packs
INR21700-RS50 Specifications
| Item | Specification |
|---|---|
| Model | INR21700-RS50 |
| Cell Type | Rechargeable lithium-ion cylindrical cell |
| Nominal Voltage | 3.6V |
| Charge Cut-off Voltage | 4.2V |
| Discharge Cut-off Voltage | 2.5V |
| Minimum Capacity | 4950mAh |
| Standard Charge Current | 2.5A |
| Standard Discharge Current | 1.0A |
| Rate Charge | 8A |
| Max Continuous Charge Current | 15A |
| Max Continuous Discharge Current | 70A with 80°C cut-off |
| ACIR | ≤4.0mΩ at 1kHz |
| Weight | ≤67.0g |
| Max Diameter | 21.35mm |
| Max Height | 70.30mm |
| Charge Temperature | 0°C to 60°C |
| Discharge Temperature | -40°C to 80°C |
| Ex-factory Voltage | 3.46V to 3.52V |
Discharge Performance
The INR21700-RS50 is a true high-drain 21700 battery. Relative capacity at different discharge currents:
| Discharge Current | Relative Capacity |
|---|---|
| 1.0A | 100% |
| 10A | ≥96% |
| 20A | ≥96% |
| 30A | ≥95% |
| 40A | ≥95% |
| 50A | ≥90% |
| 60A | ≥60% |
| 70A | ≥50% |
For high-power applications, design your battery pack based on real operating current and thermal conditions.
Cycle Life
| Cycle Condition | Cycles | Capacity Retention |
|---|---|---|
| +8A / -40A | 500 | ≥80% |
| +15A / -30A | 500 | ≥80% |
| +8A / -10A, 90% DOD | 1000 | ≥80% |
| +2A / -4A, 90% DOD | 1500 | ≥80% |
Cycle life depends on charge current, discharge current, temperature, and storage conditions.
Fast Charging
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Standard charge: 0.5C / 2.5A
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Rate charge: 1.6C / 8A
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Fast charge: 3C / 15A
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15-minute stepwise fast charge to 80% SOC
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Charge protection temperature: 55°C
Important: Charging below 0°C is prohibited. Always use a proper BMS and charger.
Applications
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EV battery packs
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E-bike and e-scooter battery packs
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Power tool batteries
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Garden tools
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Vacuum cleaners
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Drones
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Energy storage systems
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High-drain 21700 battery packs
Why Buy INR21700-RS50 From Us
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Genuine INR21700-RS50 cells
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Large stock for fast order fulfillment
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Competitive wholesale pricing
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Volume discounts for bulk orders
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Technical support and datasheet available
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Reliable B2B supply for battery pack manufacturers
Stock and Pricing
We offer competitive prices and have large stock of INR21700-RS50 21700 cells ready for shipment.
Whether you need samples, small trial orders, or bulk production quantities, contact us for the latest quote.
Request a Quote Today
Interested in the INR21700-RS50 21700 battery cell? Send us your required quantity, destination, and application.
Our sales team will reply with price, shipping cost, and lead time.
Contact us now for a bulk quote and wholesale pricing.
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