Build your own portable power solution with this 4x18650 Battery Charger Case Shell DIY Power Bank Kit. Designed for makers, hobbyists, and DIY electronics enthusiasts, this no-solder battery box allows you to assemble a rechargeable power bank using four compatible 18650 flat-top batteries without complicated welding. Featuring a removable design, built-in battery protection, four-level LED power indicators, and dual USB output, it provides a convenient way to create a portable charging device for travel, home, school, and outdoor use. The case supports Type-C and Micro USB charging inputs and delivers up to 5V/2.4A output, making it a practical DIY project for anyone looking to customize their own battery-powered charger.
