DIY 20000mAh Dual USB Power Bank Case Kit - Fits 4x 18650 Batteries, For Phone Charger, Multiple Colors

Here's a cool DIY project for you: a 20000mAh power bank case kit!

It's an empty case designed to hold four 18650 rechargeable batteries (batteries not included).

Once you add your own cells, you've got a dual USB portable charger for your phone or other devices.

The case is made of plastic and comes in a few colors like black, white, blue, and pink.

It's a simple, unbranded case, but it's a solid way to repurpose some old 18650s or build your own high-capacity backup battery pack.

Made in China.