The Hybrid Battery 1.25Ah is designed to be used in combination with the Hybrid Battery Case or with the integrated case in the Scout 3 headlamps. It is USB-C rechargeable, compact and our lightest rechargeable battery. The battery meets IPX5 standard: Water resistant; withstands heavy rain and water from any direction. The LED battery indicator ensures that you can keep track of how much power that remains in the battery. The indicator is visible for 30 seconds after you have turned on your headlamp. The battery is easily charged via a USB-C cable and has a charging time of 2.5 hours. Important: if you plan to use the Hybrid Battery 1.25Ah in a Trail Runner headlamp, make sure to purchase the Trail Runner Hybrid Battery Case as well. It is included with all Trail Runner Free headlamps.