2 x 3.7 Volt 4800 Mah 18650 Li-ion Rechargeable Batteries (Rechargeable Large Flashlight Batteries)

With its high-capacity 3.7-volt and 4800 mAh energy storage capacity, it's ideal for extended use; its compact 18650-sized design ensures portability and convenience; its rechargeable feature allows for repeated use and saves energy; it's suitable for high-energy demanding devices such as large flashlights, thus providing an uninterrupted lighting experience;