Product Name
18650 Cylindrical Lithium-Ion Rechargeable Battery (Model: INR18650L29V10)
Advantages
- Superior low-temperature performance: Operates reliably in extreme environments as low as -40°C, with capacity retention exceeding standard Li-Ion batteries under harsh conditions.
- Optimized for consistent discharge performance in high-demand applications (e.g., power tools, medical devices).
Specifications
| Item |
Details |
| Nominal Voltage |
3.6V |
| Rated Capacity |
2900mAh (Min: 2800mAh) |
| Charge Voltage |
4.2V (Limited), 4.05V for storage ≥60℃ |
| Discharge Cut-off |
2.75V (End), 2.0V (Absolute) |
| Max Continuous Charge |
0.5C (1400mA) at 25±2℃ |
| Max Continuous Discharge |
10A (with 90℃ thermal cutoff) |
| Internal Resistance |
≤25mΩ (at delivery) |
| Weight |
≤46.0g |
| Dimensions |
18.6mm (D) × 65.3mm (H) (Cylindrical) |
Cycle Life
| Test Condition |
Cycles |
Capacity Retention |
| 0.5C Charge / 0.2C Discharge |
500 |
≥80% |
| 0.5C Charge / 10A Discharge |
300 |
≥70% |
Discharge Curve
Operating Temperature Range
| Mode |
Range |
Notes |
| Charge |
-20°C to 60°C |
Max charge current reduced at ≤0℃ or ≥45℃ |
| Discharge |
-40°C to 85°C |
Surface temperature ≤90℃; capacity drops to ~15% at -40℃ |
| Storage |
-40°C to 80℃ (short-term), -20°C to 25℃ (long-term) |
≥60℃ storage requires voltage ≤4.05V |
Certifications
Complies with UN38.3 (transport safety), CE, RoHS, and IEC 62133 (safety) standards.
Key Features
- Balanced energy density: 518Wh/L (volumetric), 183Wh/kg (gravimetric).
- Standard charging: Supports 0.5C (1400mA) with 56mA cutoff.
- Safety mechanisms: Passes short-circuit, overcharge, and vibration tests per UN38.3.
Applications
- Power tools, medical devices, portable electronics.
- Backup power systems, low-temperature industrial equipment.
Usage Warnings & Precautions
- Do not weld on sidewalls or within 2mm of terminals.
- Avoid charging below 0℃ or above 60℃ to prevent capacity degradation.
- Terminate discharge if surface temperature exceeds 90℃.
Storage Guidelines
- Short-term (≤30 days): 3.50–3.60V at -40°C to 80°C.
- Long-term (≥6 months): 30–50% SOC at -20°C to 25°C for 80% capacity recovery.
Warranty & Disclaimer
- 1-year warranty against manufacturing defects.
- Specifications subject to change; verify with the latest datasheet.
