🔧 DIY 50,000mAh Power Bank – Build Your Own Super Backup!

 

🔧 DIY 50,000mAh Power Bank – Build Your Own Super Backup!

Tired of low battery warnings? Build your own DIY 50,000mAh Power Bank and enjoy massive backup power anytime, anywhere!

⚙️ What You Need:

• 10x 18650 Li-ion cells (preferably 5,000mAh each)

• Battery holder or case

• BMS (Battery Management System) for safety

• USB charging module (preferably with fast charging)

• Heat shrink wrap or enclosure box

• Soldering kit and wires

🔋 Benefits:

• High capacity: Charge your phone 10–12 times

• Cost-effective compared to branded options

• Custom ports: Add USB, Type-C, or even wireless charging

• Learn battery safety and electronics basics

⚠️ Safety Tip: Always use a BMS and quality batteries to avoid overcharging, heating, or explosion risks.

Build it, test it, and enjoy your DIY power boost!

How to attach & Connect Cells with each other 

Another link to attach batteries 

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