The iRay USA Infiray Bolt Series Battery Extender delivers extended power for your BOLT thermal imaging devices by seamlessly threading onto the 18500 battery compartment and accommodating a flat-top 18650 battery, resulting in a substantial battery life increase of over 75% for continued performance in the field. Compatible with popular BOLT models including TL35, TL35V2, TH35C, TH50C, TH50CV2, and TD50L, this extender is designed to maximize uptime without sacrificing form or function, letting you stay on the hunt, monitor wildlife, or conduct critical search and rescue operations with fewer interruptions to power. By choosing the IRAY-AC37 battery extender, you gain reliable, extended power that helps you maintain focus on your objectives rather than recurring battery changes, ensuring your thermal imaging capabilities remain ready when it matters most. With its practical construction and thoughtful compatibility, this accessory enhances your gear Kits longevity and versatility, delivering dependable performance across a range of demanding outdoor scenarios.