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What size is a 16650 battery?

The 16650 battery measures 16 mm in diameter and 65 mm in length. This compact size allows it to fit into tighter spaces, making it suitable for devices like LED flashlights and electric toothbrushes. In comparison, the more common 18650 battery has a diameter of 18 mm and the same length of 65 mm.

Key Specifications of 16650 Batteries

  • Diameter: 16 mm
  • Length: 65 mm
  • Nominal Voltage: 3.7V
  • Capacity: Typically ranges from 1800mAh to 2500mAh

Applications

  • LED Flashlights: The 16650’s compact size and reliable capacity make it perfect for portable lighting solutions.
  • Electric Toothbrushes: Its design allows it to fit neatly in devices that require a rechargeable power source.

In summary, the 16650 battery is smaller in diameter than the 18650, making it ideal for applications where space is limited.