3.6V 21700 Battery 5500mAh 30A High Capacity 500 Cycles
INR21700N55A30 21700 Battery 3.6V 5500mAh 30A 500 Cycles High Capacity
Product Name
INR21700N55A30 21700 Battery
Advantages
- High Energy Density: 5500mAh capacity for extended runtime.
- Robust Performance: Supports high continuous and pulse discharge currents.
- Long Cycle Life: Retains ≥80% capacity after 500 cycles.
- Wide Temperature Tolerance: Reliable operation in extreme environments.
Specifications
|
Parameter |
Value |
|
Nominal Voltage |
3.6V |
|
Nominal Capacity |
5500mAh |
|
Max Charge Voltage |
4.20V ± 0.05V |
|
Max Charge Current |
10A |
|
Max Continuous Discharge Current |
16.5A (No temp cut), 30A (75℃ cut) |
|
Max Pulse Discharge Current |
70A (2s pulse) |
|
Discharge Cut-off Voltage |
2.50V |
|
AC Impedance (1kHz, 30% SOC) |
≤15.0mΩ |
|
Dimensions (Dia × Height) |
21.25±0.15mm × 70.30±0.20mm |
|
Weight |
≤75g |
Cycle Life
|
Condition |
Performance |
|
500 Cycles (0.5C Charge / 1C Discharge) |
≥80% Capacity Retention |
|
300 Cycles (1C Charge / 3C Discharge) |
≥80% Capacity Retention |
|
200 Cycles (1C Charge / 4C Discharge) |
≥60% Capacity Retention |
Discharge Curve
Operating Temperature Range
|
Mode |
Ambient Temperature Range |
Surface Temperature Range |
|
Charging |
0°C to 45°C |
0°C to 50°C |
|
Discharging |
-20°C to 60°C |
-20°C to 80°C |
|
Storage (Long-Term) |
-20°C to 25°C |
N/A |
Certifications
Compliant with UN38.3, CE, RoHS, and IEC 62133 safety standards.
Key Features
- High Safety: Passes crush, short-circuit, and thermal abuse tests.
- Low Self-Discharge: ≤3% monthly at 25°C storage.
- Fast Charging: Full charge in 180 minutes at 10A current.
- Consistent Performance: Tight voltage and impedance tolerances (ΔV ≤10mV, ΔR ≤2mΩ).
Applications
- Power tools (e.g., drills, saws)
- Electric vehicles (e-bikes, scooters)
- Energy storage systems (solar, UPS)
- Industrial equipment (robotics, drones)
- High-drain portable devices (camping gear, medical devices)
Usage Warnings & Precautions
- Voltage Limits: Do not exceed 4.25V during charging or discharge below 2.50V.
- Temperature Control: Avoid charging above 50°C surface temperature.
- Short-Circuit Prevention: Use insulated tools; keep terminals clean.
- No Modification: Never disassemble or pierce the battery.
Storage Guidelines
- Short-Term (≤3 months): Store at -20°C to 45°C, 30%-50% SOC.
- Long-Term (>3 months): Store at -20°C to 25°C, 3.5V-3.7V voltage.
- Maintenance: Recharge every 3 months to 3.65V using 0.5C current.
Warranty & Disclaimer
- 12-Month Limited Warranty: Covers manufacturing defects.
- Exclusions: Damage from misuse, improper storage, or unauthorized modifications.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.