POENVFPO Battery Case, 18650 Battery Charger Box Waterproof Battery Pack with DC and USB Connectors for Bicycle Lamp and Smartphone

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  • Enhanced Waterproof Function The battery pack is designed with xp7 waterproof technology, making it suitable for various environments.
  • Improved Battery Performance Avoid spot welding batteries for reduced resistance and enhanced battery life. experience optimized battery discharge performance.
  • Multifunctional Design Equipped with a usb connector for 5v output and 2a current, enabling mobile phone charging. it also supports power display functionality.

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