The 18650 3.7V Rechargeable Lithium-ion (Li-ion) Battery Series is a range of high-performance power cells designed for professional and consumer electronics. These cylindrical cells are known for their high energy density and stability, making them the industry standard for high-drain devices that require long-lasting, reliable power.
Available in multiple capacity ratings—4000mAh, 4500mAh, and 6800mAh—this series allows users to choose the ideal balance between runtime and weight for their specific equipment.
Extended Runtime Options: Available in ultra-high capacities of 4000mAh, 4500mAh, and up to 6800mAh to suit various power requirements.
Rechargeable Chemistry: Advanced Lithium-ion technology provides a sustainable alternative to disposable batteries, supporting hundreds of charge cycles.
Stable Power Delivery: Maintains a consistent 3.7V output for peak performance in high-draw devices.
Low Self-Discharge: Engineered to hold its charge for long periods when not in use, ensuring your gear is ready when you are.
Professional Grade Build: Features a high-quality protective wrap and reinforced terminals for safety and durability.
Battery Type: 18650 Cylindrical Cell.
Chemistry: Lithium-ion (Li-ion).
Nominal Voltage: 3.7V (Peak 4.2V when fully charged).
Capacities Available: 4000mAh / 4500mAh / 6800mAh.
Rechargeable: Yes.
Safety Warning: Do not disassemble, heat, or short-circuit.
Portable Lighting: High-lumen LED flashlights and headlamps used in camping or security.
Power Banks: Often used as the internal cells for DIY or modular portable chargers.
Vaping Devices: Provides the high current needed for electronic cigarettes and vaporizers.
Cordless Tools: Powering hand-held vacuum cleaners, portable fans, and power drills.
EV & Robotics: Modular packs for electric bikes, scooters, and RC vehicles.
Can I use a standard AA charger for these? No. These require a dedicated 18650 Li-ion smart charger. 18650 cells are significantly larger than AA batteries and use a different charging protocol (CC/CV).
What is the difference between the 4000mAh and 6800mAh versions? The mAh rating indicates the "fuel tank" size. A 6800mAh battery will run your device longer on a single charge than the 4000mAh version, assuming the device's power draw is the same.
Are these "Flat Top" or "Button Top"? Please verify your device's requirements. These cells are typically available in both configurations, but "Button Top" models are most common for flashlights to ensure a secure terminal connection.
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