3.7V 5000mAh 3C 21700 Rechargeable Lithium Ion Battery Flat Top INR21700 Li Ion

Description

Main Features

1. High Energy Density

• Larger Capacity: Typically 3.7V 5000mAh, offering longer runtime compared to 18650 batteries.
• Higher Energy-to-Volume Ratio: Delivers more power in a compact form, making it ideal for high-energy applications.

2. Extended Cycle Life

• Made with high-quality lithium-ion materials, achieving 800 charge cycles for enhanced durability.
• Low internal resistance, reducing heat generation and delaying capacity degradation.

3. High Discharge Performance

• Supports high continuous discharge rates (15A or higher), meeting the power demands of electric tools, e-bikes, and other high-drain devices.
• Ensures stable voltage output, providing consistent power delivery.

4. Safety and Reliability

• Built-in explosion-proof mechanisms
• Uses advanced separator and electrolyte technology, reducing the risk of overheating and thermal runaway.

5. Versatile Applications

• Widely used in electric vehicles (EVs), e-bikes, power tools, energy storage systems (ESS), and medical devices.
• Compatible with modular battery packs, making it suitable for customized power solutions.

6. Lightweight and Compact

• Compared to traditional lead-acid batteries, it offers a lighter and more compact alternative without compromising performance.

1. General Specifications

• Battery Model: 21700 5000mAh
• Nominal Voltage: 3.7V
• Nominal Capacity: 5000mAh (5Ah)
• Standard Discharge Current: 3C (15A)
• Maximum Continuous Discharge Current: 3C (15A)
• Maximum Pulse Discharge Current: ≥6C (30A)
• Charge Cut-off Voltage: 4.2V ± 0.05V
• Discharge Cut-off Voltage: 2.5V ± 0.05V
• Internal Resistance: ≤20mΩ (Measured at 1kHz AC)

2. Charging Specifications

• Standard Charging Current: 0.5C (2.5A)
• Fast Charging Current: 1C (5A)
• Charging Voltage: 4.2V ± 0.05V
• Charge Method: CC-CV (Constant Current-Constant Voltage)
• Charging Time: ~2.5-3 Hours (Standard Charge)

3. Discharge Specifications

• Standard Discharge Current: 1C (5A)
• Maximum Continuous Discharge Current: 3C (15A)
• Pulse Discharge Current: 6C (30A)
• Discharge Cut-off Voltage: 2.5V

4. Environmental Conditions

• Operating Temperature (Charge): 0°C to 45°C
• Operating Temperature (Discharge): -20°C to 60°C
• Storage Temperature: -20°C to 45°C (Short Term) / 25°C (Recommended for Long-term Storage)
• Humidity: ≤85% RH

5. Physical Characteristics

• Cell Dimensions:
  • Diameter: 21.0 ± 0.2 mm
  • Height: 70.0 ± 0.2 mm
• Weight: Approx. 69g
• Shell Type: Cylindrical, Steel Can
• Terminal Type: Flat top or Button top

7. Applications

• Electric Bicycles & Scooters
• Power Tools
• Portable Energy Storage Systems (ESS)
• Medical Devices
• RC Drones & UAVs
• High-performance Flashlights