DIY 18650 Dual-Cell Power Bank Case – 2-Slot Portable USB Battery Box Shell with Display in Pakistan

Overview

When you have spare 18650 lithium-ion cells lying around the workshop and want to turn them into a handy pocket charger for your phone or microcontroller projects, you need a clean, secure enclosure. The DIY 18650 Dual-Cell Power Bank Case provides an all-in-one housing shell featuring integrated charging circuitry, USB output ports, and a smart snap-fit design. Simply drop in two unprotected 18650 cells, snap the case shut, and you have an instant, professional-grade portable power bank.

Key Features

• Dual 18650 Capacity: Holds two standard cylindrical 18650 lithium-ion cells in parallel to maximize your portable milliamp-hour capacity.

• Built-In Charging & Boost Circuit: Features internal power management for safe charging input and regulated USB power output.

• Sleek Portable Design: Pocket-sized plastic enclosure protects your cells while looking clean and professional.

• Tool-Free Assembly: Snap-together housing makes building your own customized power bank quick and effortless.

Technical Specifications

Common Applications

• DIY Pocket Chargers: Repurpose old 18650 laptop cells into a fully functional daily carry power bank.

• Portable Field Power: Keep your smartphone, ESP32 boards, or emergency lights charged while on the go.

• Makers & Hobbyists: An affordable, practical enclosure project for electronics beginners.

• Note to customers: Ensure both 18650 batteries are inserted with correct polarity (+ and -) and are of similar voltage/capacity before closing the case!