Battery Converter Portable USB 21-Volt Input Adapter with Slide Dock, Two Port Five-Volt Module for Workshop Outdoor Device Support

21-Volt Input To Five-Volt Output: The converter is designed to turn battery energy into USB power for everyday electronics, helping you use existing cordless equipment resources when portable phone or light support matters Two USB Ports For Device Power: The front output layout helps run phones, lights,, and other small electronics from your battery setup during work breaks, campsite tasks, or garage projects Compact Carry Profile: A small body stores neatly in a tool bag or shelf area, making the adapter useful for jobsite movement, garage organization, camping packs, and backup power spots away from wall outlets Focused Adapter Coverage: This listing centers on the adapter body itself, giving shoppers a clear portable accessory option for small device backup use without unrelated extras that take room in bags or travel storage Slide Dock Connection Layout: The adapter combines a slide dock battery mount, exposed metal rails, and a separate USB module, so users can understand the connection layout easily around workshops or outdoor tables