18650 Rechargeable Li-ion Battery 4000mAh 3.7V, Long Lasting & High Power
18650 4000mah 3.7V Rechargeable Lithium Ion battery More 800 Life Cycles
Features
- High Energy Density: Offers a high capacity of 4000mAh in a standard 18650 form factor.
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Long Cycle Life: Stable chemistry provides over 500 charge/discharge cycles while maintaining performance.
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Excellent Discharge Performance: Stable discharge voltage platform ensures consistent power delivery.
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High Safety Standards: Built-in PTC (Pressure/Temperature/Current) protection and CID (Current Interrupt Device) for enhanced safety.
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Low Self-Discharge: Retains charge well during storage.
Specifications
| Rated Capacity | 4000mAh |
| Nominal Voltage | 3.7V |
| Charge Cut-off Voltage | 4.2V |
| Discharge Cut Off Voltage | 2.75V |
| Standard Charge Current | 0.5C (2000mA) |
| Max. Discharging Current | 1C (4000mA) |
| Cycle Life | ≥500 times |
| Weight | 48g |
| Operating Teerature |
Charging: 0°C to +45°C Discharging:-20°C to +60°C |
| Storage Teerature | -20°C to +45°C |
Applications
- Portable Power Banks
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High-performance Flashlights & Lanterns
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Electric Bicycles & Personal Transportation (in multi-cell packs)
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Portable Medical Devices
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Consumer Electronics (e.g., advanced vaping devices, portable speakers)
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Backup Power Supplies & UPS Systems
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RC Hobbies and Drones (in multi-cell packs)
Usage precations and safety warnings
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Use a dedicated Li-ion charger designed for 3.7V/4.2V batteries. DO NOT use Ni-MH/Ni-Cd chargers.
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Charge within specified temperature limits (0°C to 45°C).
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Never charge the battery unattended for extended periods.
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Stop using the battery and charger if the battery becomes hot, smokes, swells, or smells unusual during charging.
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Do not discharge below the cut-off voltage (2.75V). Deep discharge can permanently damage the cell.
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Do not exceed the maximum continuous discharge current (4000mA).
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Avoid short-circuiting the terminals. Never carry or store batteries loosely where metal objects (coins, keys) can contact both terminals.
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Use within the specified operating temperature range (-20°C to +60°C).
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Store batteries in a cool, dry place, ideally at 30-50% state of charge for long-term storage.
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Keep away from children and pets.
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Do not disassemble, crush, puncture, incinerate, or immerse in liquid.
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Do not solder directly onto the cell body. Use spot welding for pack assembly.
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If the battery is physically damaged, leaking, or swollen, discontinue use immediately and dispose of it properly.
Get in Touch
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