18650 Lithium Battery – 3.7V Rechargeable
The 18650 lithium-ion battery is a high-capacity 3.7V rechargeable cell widely used in power banks, flashlights, DIY electronics, and portable devices. Compact, powerful, and long-lasting.
Key Features:
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Nominal Voltage: 3.7V
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Capacity: Typically 2000mAh – 3000mAh (varies by model)
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Rechargeable (Li-ion chemistry)
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Standard Size: 18mm × 65mm
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Protection: Available with or without protection circuit (PCB)
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Long cycle life and stable performance
Applications:
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Power banks
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Flashlights and torches
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DIY battery packs
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Robotics and portable electronics
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Solar-powered devices
900-1200 mAh (measured)
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