DIY Emergency Power Bank | Make a Portable Charger Using Old Mobile Battery & USB Module

Описание: In this video, learn how to make a simple Emergency Power Bank using easily available components like an old mobile battery, USB boost module, and a few wires. This compact DIY device can help you charge your phone during power outages, travel, or any emergency situation.

You’ll learn how to:
✅ Reuse an old mobile or smartphone battery
✅ Connect a 5V USB boost converter
✅ Add on/off switch for safety
✅ Build a compact and portable power bank
✅ Test phone charging output

Perfect project for students, DIY lovers, and emergency preparedness enthusiasts who want a low-cost solution using recycled parts.

🔧 Materials Needed:
Old mobile phone battery (3.7V Li-ion)
5V USB boost converter module
Mini switch
Wires
Tape or heat-shrink
Small casing (optional)

⚠️ Safety Note:

Handle Li-ion batteries carefully. Do not short-circuit and always test with safe equipment.