Charge 3.7V Battery Directly from 110V-220V AC #electronic #electronics #diy #ideax #youtubeshorts

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🔋 DIY 3.7V Battery Charger Using 110V-220V AC Power! ⚡🔌

In this video, I will show you how to build a simple charger circuit to charge a 3.7V lithium-ion battery (such as 18650 cells) directly from 110V–220V AC input using minimal components like a 1N4007 diode, a 220μF capacitor, and a 47KΩ resistor. No transformer needed! 🔥🚀

🛠 Components Used:
1x 1N4007 Diode

1x 220μF Capacitor (25V rating or higher)

1x 47KΩ Resistor

1x 3.7V Lithium-Ion Battery (18650)

1x 220V AC Plug

🎯 What You'll Learn:
✔️ How to step down AC voltage for 3.7V battery charging
✔️ How to make a simple AC to DC charger without a transformer
✔️ Safe wiring tips for building a mini battery charger
✔️ How capacitors, resistors, and diodes work in charging circuits

👉 Perfect for DIY electronics lovers, students, and beginners!
🚀 Watch the full video for complete instructions and safety tips!

#BatteryCharger #3V7BatteryCharger #LithiumBatteryCharger #DIYCharger #ACtoDCCharger #18650Charger #TransformerlessCharger #BatteryChargingCircuit #DIYPowerProjects #YouTubeShorts