The ZX1000 Zithion-X rechargeable lithium-ion battery is compatible with the Coast XP11R flashlight. The battery features a built-in USB-C port for easy charging, either inside or outside the flashlight. A battery indicator blinks red while charging and lights up green when fully charged. An overcharge and discharge protection circuit ensures that the battery is as safe as possible. The battery is backed by Coast's one-year warranty against material and workmanship defects. Coast lighting serves various purposes today, both in private and professional settings. For Coast, it is essential that everyone has the opportunity to choose the right light, with the greatest and best quality and flexibility, providing you with the best light and the best applications. Everything is designed to make every day safer, easier, and more enjoyable. Coast - Trusted tough.