NEPA took light again yesterday evening. My phone was at 9%. My tablet was almost dead. And I just sat there thinking: “How hard can it really be to build a power bank yourself?” That curiosity led me into a very interesting discovery thread 👇 I used to think power banks were highly complicated devices only engineers could make. Turns out, the basic idea is simpler than most people think. At its core: battery charging module USB output That’s the foundation. The most common battery people use is called an “18650 battery.” Funny name, but you’ve probably seen it before inside: laptop batteries rechargeable lamps some power banks These small batteries store power surprisingly well. Then there’s something called a “power bank module.” This tiny board: charges the battery, regulates voltage, and gives USB output for your phone. Without it, you can damage your device. The shocking part? The materials are actually available in Nigeria. You can find them on: Jumia Computer Village local electronics shops Some people even recycle old laptop batteries to reduce cost. Estimated beginner cost I found: 🔋 1 battery 🔌 charging module 📦 small case Total: Around ₦4k–₦10k depending on quality. That honestly surprised me. But here’s what I learned quickly: One battery is okay for phones… …but tablets are another story 😅 Most tablets need much larger capacity, so you may need: 3 to 4 batteries, stronger modules, and better wiring. I also discovered why many cheap power banks fail. Some sellers use: weak batteries, fake battery ratings, poor circuit protection. That’s why some power banks: swell, stop working quickly, or charge painfully slowly. One important warning: Lithium batteries are NOT toys. Wrong connections can: overheat, spark, or damage devices. So anybody trying this should learn properly first. What started as frustration over blackout honestly became a mini tech lesson for me. It made me realize: many things we buy daily are less “mysterious” than we think. Sometimes curiosity is the beginning of skill. Now I’m considering trying small DIY tech projects gradually. Not because I want to become an engineer overnight… …but because learning how things work is actually empowering. Nigeria can frustrate you into learning survival innovation 😅 One day it’s blackout… next day you’re researching batteries, voltage, and USB modules on the internet. Would you ever try building your own power bank or small backup device? 🔋
