How to make a power bank

 

🔋 How I Made a DIY Power Bank at Home | Rbot Boy

Yo fam! 👋
So the other day, my phone battery hit 1% and I thought, “What if I could just build my own power bank?” 🤯
Sounds crazy? Maybe. But guess what — I actually did it. 💪🔌

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🔧 What I Used:

• 2 rechargeable batteries (lithium-ion)

• A 5V USB boost converter module

• A switch

• A charging module

• Some wires

• A small box to pack it all in (reuse and recycle 💯)

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⚡ How I Built It:

1. Battery Time — I carefully removed two 18650 cells and tested if they still worked.

2. Charging Setup — Connected them to the TP4056 charging module so I could safely charge them with a micro USB.

3. Boost Converter — Hooked that up so the 3.7V batteries could output a solid 5V — enough to charge any phone.

4. Switch Magic — Added a switch to turn the power bank on and off (pro touch 😉).

5. Pack It Clean — Placed everything neatly into a small case and taped it up tight.

Boom. My own power bank. Works like a charm. 🚀

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🧠 What I Learned:

• How voltage and current really matter when charging devices.

• That batteries can be super powerful if used properly.

• And most importantly, I can build things that are actually useful in real life 🔥

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DIY is not just about fun — it’s about learning, leveling up, and sometimes, even saving the day. 😎

- Rbot Boy