INR21700-5000 5000mAh 21700 Lithium-Ion Battery Cell
High-Capacity 21700 Battery for Demanding Packs
The INR21700-5000 is a 5000mAh 21700 lithium-ion rechargeable battery cell built for high-capacity and high-discharge battery packs. With a 3.6V nominal voltage and 18Wh rated energy, it is a practical choice for power tools, e-mobility, portable power, robotics, and energy storage systems.
This 21700 battery combines 5000mAh capacity, 20A continuous discharge without temperature cut, and 50A continuous discharge with a 75°C temperature cut. For high-pulse applications, it supports up to 100A for 2 seconds.
We offer competitive wholesale pricing and large stock availability for bulk 21700 cell orders. Contact us for current pricing, volume discounts, and lead time.
Key Specifications
| Item | Specification |
|---|---|
| Model | INR21700-5000 |
| Type | 50T3 |
| Rated capacity | 5000mAh |
| Minimum capacity | 5000mAh at 0.1C; 4900mAh at 0.2C |
| Nominal voltage | 3.6V |
| Rated energy | 18Wh |
| Max charge voltage | 4.20V ±0.05V |
| Discharge cut-off voltage | 2.5V |
| Standard charge | 2.5A CC-CV, 100mA cut-off |
| Max charge current | 10A |
| Recommended charge current | 2.5A |
| Max continuous discharge | 20A without temperature cut; 50A with 75°C cut |
| Max pulse discharge | 100A (2s pulse) |
| Diameter | 21.25 ±0.15mm |
| Height | 70.30 ±0.20mm |
| Weight | ≤73g |
| AC impedance | ≤12.0mΩ at 1kHz, 30% SOC |
| Charge temperature | 0°C to 45°C ambient |
| Discharge temperature | -20°C to 60°C ambient |
| Storage temperature | -20°C to 45°C for 3 months; -20°C to 25°C for 1 year |
| Factory voltage | 3.50V to 3.65V |
Performance Highlights
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5000mAh 21700 cell with 18Wh rated energy.
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10A discharge capacity ≥4800mAh at normal temperature.
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High discharge 21700 battery design: 20A continuous without temperature cut.
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50A continuous discharge available with 75°C temperature cut.
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100A pulse discharge for 2 seconds.
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Rate capability: ≥95% at 15A and 20A, ≥93% at 30A, ≥85% at 40A, based on 10A capacity.
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Pack consistency: voltage difference ≤10mV, impedance difference ≤2mΩ, capacity difference ≤1% of rated capacity.
Cycle Life and Reliability
The INR21700-5000 is designed for robust cycle performance under defined test conditions.
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300 cycles at 10A charge / 10A discharge: capacity ≥80% of initial capacity.
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300 cycles at 5A charge / 25A discharge: capacity ≥60% of initial capacity.
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100 cycles at 5A charge / 35A discharge with 75°C temperature cut: capacity ≥60% of initial capacity.
For high-drain 21700 battery packs, proper thermal management and BMS settings are recommended to maximize cycle life.
Safety and Environmental Testing
The cell specification includes safety test requirements for overcharge, forced discharge, short circuit, crush, and thermal abuse. Environmental tests include low-pressure simulation, free drop, vibration, and temperature cycling. All safety test items require no fire and no explosion.
Battery pack designers should always validate the final pack design, charging system, and thermal management for the target application.
Wholesale 21700 Cells in Stock
We supply bulk 21700 lithium-ion cells for battery pack manufacturers, distributors, and project buyers. If you are looking to buy 21700 cells at competitive prices, our sales team can support volume orders with current stock information and wholesale pricing.
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Large stock available for bulk orders.
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Competitive pricing for wholesale 21700 battery purchases.
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Support for sample evaluation and volume planning.
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Stable supply for repeated battery pack production.
Request a Quote
Need a reliable 5000mAh 21700 battery supplier? Contact us now with your required quantity, destination, and application.
Send your inquiry today to get the latest wholesale price and stock availability for INR21700-5000 21700 lithium-ion cells.
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