18650 li ion rechargeable battery
The 18650 li ion rechargeable battery represents a revolutionary advancement in portable power technology. This cylindrical cell, measuring 18mm in diameter and 65mm in length, has become the industry standard for high performance energy storage. With a typical capacity ranging from 2000mAh to 3500mAh, these batteries deliver reliable power at a nominal voltage of 3.7V. The lithium ion chemistry allows for excellent energy density, making them significantly lighter and more compact than traditional rechargeable alternatives. These batteries feature sophisticated protection circuits that guard against overcharging, over discharging, and short circuits, ensuring both safety and longevity. Their low self discharge rate, typically less than 3% per month, means they retain their charge effectively during storage. The 18650 battery can withstand hundreds of charge cycles while maintaining consistent performance, making it ideal for various applications from powerful flashlights to electric vehicles. The cell's construction includes high grade cathode materials, typically utilizing lithium cobalt oxide or lithium manganese oxide, combined with graphite anodes to enable efficient energy storage and delivery.