Headlamp Battery Case 4xAAWATER RESISTANT Made to withstand tough conditions COMPACT SIZE Small and flexible 4xAA battery case that fits headlamps in our Cross Trail series. Our battery line up gives you the opportunity to find the right balance between burn time and weight. The power range covers a wide span of activities, from a small head mounted battery for a fast run to a powerful pack for a long hike. All rechargeable batteries are equipped with USB charging. The SILVA