21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles
Brand Name:OiD
Certification:BIS, KC, BSMI, CB, UL, CCC
Model Number:INR21700N40A40
Minimum Order Quantity:100pcs
Delivery Time:3 ~ 7 days for storage
Payment Terms:TT,L/C,Western Union
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Shenzhen China
Address:
2# Building, Shimao Park, Zhenhuan Rd, Pingshan, Shenzhen, China.
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Product Details
Company Profile
Product Details
INR21700N40A40 3.7V 4000mAh 40A 300 Cycles 21700 Battery
Product Name
INR21700-4000-3.7 21700 Battery
Advantages
- High energy density and long cycle life
- Superior high-rate discharge capability for demanding applications
- Enhanced safety and thermal stability
- Certified for compliance with international standards
Specifications
Parameter | Value |
Model | INR21700N40A40 |
Nominal Voltage | 3.7V |
Nominal Capacity | 4000mAh |
Charging Voltage | 4.20V ± 0.05V |
Discharge Cut-off Voltage | 2.50V |
Max Charging Current | 6.0A |
Max Continuous Discharge Current | 40A |
Weight | ≤68.0g |
Dimensions | Diameter: ≤21.30mm, Height: ≤70.40mm |
Internal Resistance | ≤15mΩ |
Energy Density | Volume: 590Wh/L, Weight: 218Wh/kg |
Terminal Type | Standard 21700 flat top or button top (customizable) |
Cycle Life
Condition | Cycles | Capacity Retention |
4A Charge / 20A Discharge | 300 | ≥60% |
4A Charge / 30A Discharge | 200 | ≥60% |
Discharge Curve
Operating Temperature Range
Condition | Temperature Range |
Charging | 0°C to 50°C |
Discharging | -20°C to 75°C |
Storage | -20°C to 45°C (recommended for long-term storage) |
Certifications
- BIS, KC, BSMI, CB, UL, CCC
Key Features
- High discharge rate up to 40A
- Excellent thermal stability and safety
- Long cycle life with minimal capacity degradation
- Environmentally friendly and RoHS compliant
Applications
- Electric tools (e.g., drills, saws)
- Floor cleaning machines (e.g., scrubbers, sweepers)
- Vacuum cleaners
- High-power portable devices
Usage Warnings & Precautions
- Use only with compatible chargers and devices.
- Avoid short-circuiting, overcharging, or over-discharging.
- Do not expose to high temperatures, fire, or water.
- Keep away from children and pets.
Storage Guidelines
- Store at 20±5°C with 50% SOC for optimal performance.
- Avoid storing in high humidity or extreme temperatures.
- Recharge every 6 months if stored for extended periods.
Warranty & Disclaimer
- 12-month limited warranty from the date of purchase.
- Warranty does not cover damage due to misuse, improper charging, or unauthorized modifications.
- Manufacturer is not liable for accidents caused by improper use.
21700 4000mAh 40A High Rate Rechargeable Battery with 300 Cycles
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