RECHARGEABLE BATTERY 18500- PIKCELL 3.7V 1400 MAH

rechargeable battery. While it looks similar to a standard AA battery, it is quite different in terms of power, chemistry, and size.
​Here is a breakdown of what those specifications mean for you:
​Key Specifications
​Chemistry (ICR): This stands for Lithium Cobalt Oxide. These batteries are known for high energy density but require careful handling (never overcharge or short-circuit them).
​Size (18500): The numbers actually represent its dimensions.
​18: 18mm in diameter.
​50: 50mm in length.
​0: Denotes a cylindrical shape.
​Voltage (3.7V): This is the nominal voltage. When fully charged, it will typically reach 4.2V.
​Capacity (1400mAh): This is the "fuel tank" size, meaning it can provide 1400 milliamps of current for one hour