Spare Battery Pack. Experience the ultimate peace of mind with the Spare Battery Pack, designed to deliver outstanding performance and reliability. Crafted with an aluminum housing, this battery pack offers robust protection, ensuring the longevity of your power source. To provide an extra layer of defense, it also comes wrapped in a neoprene casing with a convenient Velcro® brand hook-and-loop strap for secure attachment. Compatible with Oxbow Voyager helmet lights, this Spare Battery Pack boasts exceptional compatibility, seamlessly integrating with your existing lighting setup. Whether you're embarking on an intense adventure or simply need a reliable backup power source, this lithium-ion battery pack has got you covered. Key Features: Spare battery for the Oxbow helmet lights. Lithium-ion technology for reliable and consistent power output. Rechargeable design.