Test Any Battery with an LED 💡| Easy DIY Battery Tester Tutorial

Описание: Learn how to check if a battery is working using a simple LED light! 💡
In this step-by-step tutorial, I’ll show you how to test different types of batteries (AA, AAA, 9V, coin cell, etc.) using just an LED and a few wires.
No multimeter needed — this is a quick, easy, and fun DIY electronics trick that anyone can do at home.

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