ThorFire 3000 mAh 3.7V 18650 Battery Protected Rechargeable Li-ion Battery for Flashlight Absolutely 3000mAh Real Capacity, more durable and efficient than other 18650 battery. Built-in PCB protection board against Short circuit, Over-charge and Over-discharge. (ThorFire Protected button-top 18650 battery is a bit LONGER than other NON-Protected alternatives). More than 500 times Long cycle life, bring you higher quality experience. Applications include most flashlight, laser point, led torch, digital camera and other electronic devices. Reliability Quality: Made from premium Samsung battery cells. We're NOT: Most of the 18650 batteries' capacity are oversized today, and made of waste old battery.