The ARB-L18-3500mAh 18650 battery from Fenix is a high-grade model with an impressive 3500mAh rating, providing superior performance and reliability. It is equipped with protective features like short-circuit prevention, multiple layers of protection, and a button-top design that is suitable for a variety of Fenix LED flashlights. Rechargeable, reliable, and long-lasting, the 18650 series is the ultimate choice for high performance lighting. Note: This item is packaged and priced as one battery. Shipping Note: Lithium ion batteries are considered "dangerous goods" per US transportation regulations and can often only be transported via ground shipment. Orders containing loose batteries will typically take much longer than predicted to be delivered. Delivery times of 14+ days are common.