RECHARGEABLE BATTERY 18650- PIKCELL3.7V 2200 MAH

battery. These are the workhorses of the modern portable world, found in everything from high-end flashlights and laptop battery packs to electric vehicles and power tools.
​Based on the label in your image, here is a breakdown of what those specs actually mean for you:
​Key Specifications
​Model (ICR18650): The "18650" refers to its dimensions—18mm in diameter and 65mm in length. The "ICR" prefix typically indicates a Lithium Cobalt Oxide chemistry, known for high energy density.
​Voltage (3.7V): This is the nominal (average) voltage. When fully charged, it usually hits 4.2V, and it's considered "empty" around 3.0V.
​Capacity (2200mAh): This stands for milliampere-hours. It tells you how much energy the battery can store. A 2200mAh rating means it could theoretically provide 2.2 Amps of current for one hour