16340 battery

The "16340" battery is a type of rechargeable lithium-ion (Li-ion) or lithium-ion polymer (LiPo) battery that is similar in size to a CR2 disposable battery but with different voltage and capacity characteristics. The "16340" designation refers to the battery's dimensions:

    16 mm in diameter
    34 mm in length (excluding the positive terminal button)

Here are some key characteristics and details about 16340 batteries:
Characteristics:

    Nominal Voltage: 3.7 volts, which is higher than the 3 volts of a standard CR2 battery.
    Capacity: Typically ranges from 700mAh to 900mAh or more, depending on the specific model and brand.
    Chemistry: Lithium-ion or lithium-ion polymer.
    Charge Cycles: Can be recharged hundreds of times, depending on the quality and usage conditions.
    Self-discharge Rate: Lower than NiMH batteries, but still loses charge over time when not in use.

Applications:

    Flashlights: Many LED flashlights are designed to accept 16340 batteries.
    Portable Electronics: Some small electronic devices, such as portable audio players, can use 16340 batteries.
    RC Models: Small radio-controlled models and drones may use 16340 batteries.
    Other Portable Devices: Various small devices that require a higher voltage than what a CR2 battery provides.

Charging:

    Charging: Requires a charger specifically designed for lithium-ion batteries to avoid overcharging, which can damage the battery.
    Discharging: It's recommended to discharge 16340 batteries fully before recharging to maintain optimal performance, although modern batteries are less susceptible to memory effects.

Safety:

    Handling: 16340 batteries should be handled carefully to avoid short circuits or exposure to extreme temperatures.
    Disposal: Dispose of 16340 batteries according to local regulations, as they contain hazardous materials.

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