INR21700-5000Q 21700 Battery – 5000mAh 3.6V High Drain Li-ion Cell
The INR21700-5000Q is a high-capacity 21700 lithium-ion battery cell with 5000mAh nominal capacity and 3.6V nominal voltage. It is designed for high-drain battery packs that need high power, long cycle life, and stable performance.
This 21700 rechargeable battery is supplied by Amprus Energy Co., Ltd. It is suitable for power tools, e-bikes, robotics, energy storage, and industrial battery packs.
Key Features
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5000mAh 21700 battery cell
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3.6V 21700 Li-ion cell
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High drain 21700 battery with 50A continuous discharge
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125A continuous discharge at 75°C cut-off, not for cycle use
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180A pulse discharge for 2 seconds
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Low AC internal impedance: <5mΩ
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Low DCIR: <20mΩ at 25°C
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21700 battery for power tools, e-bikes, and battery packs
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Compact 21700 size with PET sleeve
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Weight: 70.0 ± 2.0g
21700 Battery Specifications
| Item | Specification |
|---|---|
| Model | INR21700-5000Q |
| Nominal capacity | 5000mAh |
| Minimum capacity | 4950mAh |
| Nominal voltage | 3.6V |
| Delivery voltage | 3.2–3.4V within 10 days from factory |
| Charge limit voltage | 4.20V |
| Discharge cut-off voltage | 2.50V |
| Standard charge | CC-CV, 5A, 4.2V, 100mA cut-off |
| Standard discharge | CC, 5A, 2.5V |
| Max continuous charge current | 2C / 10A, about 60 min |
| Max continuous discharge current | 50A @ RT, end discharge 2.5V, for cycle use |
| Max continuous discharge current | 125A @ 75°C temperature cut, not for cycle use |
| Pulse discharge | 180A for 2s |
| AC internal impedance | <5mΩ at 1kHz, 30% SOC |
| DCIR | <20mΩ at 25°C; <100mΩ at -20°C |
| Weight | 70.0 ± 2.0g |
| Diameter | 21.70 ± 0.2 mm |
| Height | 70.80 ± 0.3 mm |
| Operation temperature, charge | 0–60°C |
| Operation temperature, discharge | -40–80°C |
| Pre-charge mode | 1.0–3.0V, 0.1–0.5C |
21700 Battery Performance
Discharge capacity at different temperatures
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-40°C: about 70%
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-20°C: about 80%
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0°C: about 90%
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25°C: 100%
At -40°C, the discharge cut-off voltage should be set to 2.0V.
Rate discharge capability
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0.2C: 100%
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4C: 97%
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6C: 97%
Cycle life
Charge at 5A CC to 4.2V, then CV to ≤100mA.
Discharge at 50A CC to 2.5V or 75°C cut-off.
300 cycles capacity ≥70%.
High-temperature storage
After a high-temperature storage test, capacity recovery is ≥4500mAh, which is ≥90% of rated capacity at 25°C.
Safety Performance
The INR21700-5000Q 21700 cell is tested for:
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Forced discharge
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Overcharge
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External short circuit
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Drop
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Heating
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Crush
Test criteria: no explosion, no fire.
21700 Battery Applications
This high drain 21700 battery is suitable for:
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Power tools and garden tools
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E-bikes, e-scooters, and light electric vehicles
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Robotics and AGVs
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UPS and backup power systems
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Industrial equipment
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High-power energy storage battery packs
Storage and Handling
Store the 21700 Li-ion cell in a cool, dry, and well-ventilated area.
For long-term storage, keep the cell at about 30%–50% charge. Recharge about once every six months to prevent over-discharge.
Do not short-circuit, reverse charge, disassemble, deform, immerse in water, or expose to fire. Do not mix with different battery types. Use only a suitable charger.
Dispose of batteries according to local regulations.
21700 Battery FAQ
What is the INR21700-5000Q 21700 battery?
It is a 21700 lithium-ion battery cell with 5000mAh capacity, 3.6V nominal voltage, and high-drain performance.
Is the 21700 battery rechargeable?
Yes. The INR21700-5000Q is a rechargeable 21700 Li-ion cell.
What is the maximum discharge current of this 21700 cell?
50A continuous at room temperature for cycle use. 125A continuous at 75°C cut-off, not for cycle use. 180A pulse discharge for 2 seconds.
What is the voltage of a 21700 battery?
This 21700 battery has a nominal voltage of 3.6V and a charge limit voltage of 4.20V.
What is the 21700 battery size and weight?
Diameter: 21.70 ± 0.2 mm. Height: 70.80 ± 0.3 mm. Weight: 70.0 ± 2.0g.
What applications use this 21700 battery?
Power tools, e-bikes, robotics, UPS systems, industrial equipment, and high-power battery packs.
Can I buy 21700 battery wholesale?
Yes. Contact us for wholesale 21700 battery price, MOQ, lead time, and samples.
Where can I get the 21700 battery datasheet?
Contact us and request the INR21700-5000Q 21700 battery datasheet.
21700 vs 18650 battery: which is better?
21700 cells generally offer higher capacity and higher power than 18650 cells. The right choice depends on your battery pack size, weight, and performance targets.
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