Compact and practical, the 21700 Power Bank Case Mini UPS DIY Battery Box lets you build a portable power solution without soldering. Designed to accommodate 21700 cells, this mobile power shell includes a 22.5W fast charging capability and a simple plug-and-play layout so you can assemble a custom power bank quickly. Its slim profile and durable enclosure make it easy to carry in a bag or pocket for everyday mobile charging needs.
Ideal for DIY enthusiasts and anyone who wants to reuse spare 21700 batteries, the case provides basic protection and organized internals for safe battery installation. The user-friendly design helps streamline assembly and makes maintenance straightforward.
Highlights:
– Compatible with 21700 battery cells
– 22.5W fast charging support
– Tool-free, no-solder assembly
– Lightweight, portable enclosure
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