Build a Battery Powered USB Charger
Build a Battery Powered USB Charger
207.3K viewsOct 2, 2020
instructables.com
I built a custom power bank from old laptop batteries! Instead of tossing dead laptop batteries, I salvaged the 18650 cells and turned them into a high-capacity portable charger using a cheap $5 circuit board. The best part? I 3D-printed a rugged case that even includes a red LED flashlight – perfect for camping without ruining your night vision. This DIY power bank charges phones fast and costs way less than store-bought options. Want to make your own? Full build tutorial on my YouTube - https:
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I built a custom power bank from old laptop batteries! Instead of tossin…
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