For battery cells, review the product description for real-world current recommendations, testing notes, and application guidance. Manufacturer maximum ratings should be treated as limits, not the best target for long-term pack health.
Description
Amprius 50Q INR21700-5000Q Cell - 5000mAh 50A - High-Power Lithium-Ion Cell - Check Availability
Continuous discharge: 50A @ RT
Pulse discharge: 180A for 2 seconds
The Amprius 50Q INR21700-5000Q is a high-power 21700 lithium-ion cell designed for applications that need a strong balance of 5000mAh capacity, high current output, and low internal resistance.
According to the product specification, this cell has a 5000mAh nominal capacity, 4950mAh minimum capacity, 3.6V nominal voltage, and a 50A maximum continuous discharge rating at room temperature. This makes it a strong option for high-performance drones, UAV battery packs, robotics, RC applications, lightweight EV projects, and custom 21700 high-output battery builds.
The datasheet also lists a 125A high-current discharge rating with a 75°C temperature cutoff. This 125A rating is not for cycle use. For repeated high-power cycling, pack design, cooling, current path, and temperature monitoring are extremely important.
Specifications:
| Model | INR21700-5000Q |
| Brand | Amprius Energy Co., Ltd. |
| Size | 21700 |
| Nominal Capacity | 5000mAh |
| Minimum Capacity | 4950mAh |
| Nominal Energy | Approx. 18Wh |
| Nominal Voltage | 3.6V |
| Delivery Voltage | 3.2V to 3.4V |
| Max Charge Voltage | 4.20V |
| End of Discharge Voltage | 2.50V |
| Standard Charge Method | CC-CV, 5A to 4.20V, ≤100mA cutoff |
| Standard Discharge Method | 5A CC to 2.50V |
| Max Charge Current | 10A, 2C |
| Max Continuous Discharge | 50A @ room temperature |
| High-Current Discharge | 125A with 75°C temperature cutoff, not for cycle use |
| Pulse Discharge | 180A for 2 seconds |
| Chemistry | INR Lithium-Ion |
| Positive Terminal | Flat Top |
| Protected | No |
| Rechargeable | Yes |
| Initial AC Impedance | <5mΩ, AC 1kHz after standard charge at 30% SOC |
| DCIR | <20mΩ at 25°C, <100mΩ at -20°C |
| Approx. Weight | 70.0g ± 2.0g |
| Dimensions | 21.70mm ± 0.2mm diameter x 70.80mm ± 0.3mm height, with PET |
| Charge Temperature | 0°C to 60°C |
| Discharge Temperature | -40°C to 80°C |
| Cycle Life | 300 cycles capacity ≥70%, tested with 5A charge and 50A discharge to 2.5V or 75°C cutoff |
| Application Type | High Power / High Capacity 21700 Cell |
| Datasheet | Official product specification available |
Important note: The 125A discharge value requires a 75°C temperature cutoff and is listed as not for cycle use. For repeated high-current use, design the pack around the 50A room-temperature continuous rating and monitor temperature carefully.
Applications:
- ✅ High-Performance UAVs and Drones
- ✅ RC Aircraft and EDF Battery Packs
- ✅ Robotics and Autonomous Systems
- ✅ Lightweight High-Output Battery Packs
- ✅ Custom 21700 Performance Builds
- ✅ Applications Requiring High Current and Low Resistance
DIY500AMP.COM Design - High Power 21700 Performance
⚠️ Safety Warning for Lithium-Ion Battery Usage
Customers should have a clear understanding of lithium-ion battery handling and safety before making a purchase. Lithium-ion batteries are highly sensitive and may pose fire, burn, or explosion risks if improperly handled. Always charge batteries on fire-resistant surfaces, and never leave them charging unattended.
This cell is intended for experienced users and battery-pack builders. It should be used only with proper protection, correct charging equipment, proper current path design, secure mechanical assembly, and adequate temperature monitoring. Compatibility with specific devices is not guaranteed.
By purchasing, you assume full responsibility for any injury, damage, or loss arising from incorrect use, improper pack construction, mishandling, short-circuiting, overheating, overcharging, physical damage, or use outside the manufacturer specifications.
Important Usage Guidelines:
- Not for Use in E-Cigarettes or Similar Devices
- Battery Pack Use Only
- Must Be Used with Proper Protective Circuitry, BMS, or BMU
- Use Only with a Charger Designed for This Battery Type
- Do Not Exceed 4.20V Charge Voltage
- Do Not Discharge Below 2.50V
- Monitor Cell Temperature During High-Current Use
- Spot Weld Only - Do Not Solder Directly
- Do Not Short Circuit the Cell
- Do Not Disassemble, Crush, Puncture, or Deform the Cell
- Do Not Immerse in Water
- Do Not Mix with Other Brands, Types, Models, Old Cells, or Used Cells
- Store in a Cool, Dry, Well-Ventilated Area
- Inspect Before Use and Do Not Use if Wrap Is Damaged
- Keep Away from Loose Metal Objects
- Keep Out of Reach of Children
- Follow Manufacturer Specs Strictly
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Orders ship from Florida when inventory is available. Lithium-ion cells require proper handling, protected packs, correct chargers, and safe storage. Do not solder directly to battery terminals.
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