Have you ever looked for a good Rechargeable Lithium Battery from the internet in your daily life? If you are sure you really need one, here we recommend you a fine product. This UltraFire 18650 Rechargeable Lithium Battery is designed perfectly. We offer this UltraFire 18650 battery in order to meet customers' different needs. Rechargeable Lithium Battery is precisely engineered and rigorously tested for voltage, capacity, compatibility and safety, which exceeds original mobile battery specifications. This UltraFire 18650 battery is rapidly becoming a very economical way to lower the operating costs of flashlights and some other things. The voltage of Ultrafire Batteries are 3.7V and the capacity is 2800mAh. Customers can charge it repeatedly and the lifespan is long enough. The integrated microchip prevents overcharging and lengthens battery life. So please be quick to buy this good rechargeable battery.