Nucelit Compact Backup Battery Case, 21700 3 Cell Shell with Display Window and Replaceable Design for Travel Use

Display Window Readout: The front display window shows remaining power at a glance, helping you plan phone or tablet use before commuting, errands, or short trips Compact Carry Profile: The 8.2cm / 3.23inch square body with loop strap is easy to pack in a pouch, backpack, or drawer when you want portable backup power that stays simple to grab Package Content: The box includes the battery case, while the removable layout keeps setup straightforward for users who already have compatible flat top 21700 cells Cable And Port Convenience: An integrated Type C cable works with USB A and Type C, so you can power everyday devices with fewer loose accessories in your bag Replaceable Battery Setup: Slide in three flat top 21700 cells with a quick swap layout, then aging batteries when needed to keep backup power flexible for travel and daily use