USB Battery Charger Indicator Circuit | Red & Green LED Charging Status | DIY Electronics

🔋 USB Battery Charger Indicator Circuit 🔴 Red = Charging | 🟢 Green = Full 💡 Simple 3.7V Li-ion Battery Charger 📝 📄 Description (SEO Optimized in English): In this video, learn how to make a USB battery charger indicator circuit using simple components — a 1N4007 diode, 1K resistor, red and green LEDs, and a 3.7V Li-ion battery. When charging, the red LED glows 🔴, and when the battery is fully charged, the green LED lights up 🟢. This is a beginner-friendly DIY electronics project that shows the charging and full status clearly. 🔹 Components Used: 1N4007 Diode 1K Resistor Red LED (Charging) Green LED (Full) 3.7V Battery USB Cable Perfect for students, hobbyists, and electronics learners. 📺 Subscribe for more DIY electronics tutorials and simple circuit projects! #ElectronicsBasics #BatteryCharger #DIYProjects #CircuitDiagram #ElectronicsLearning