🔋 3.7V Battery Charger with Charging & Full Indicator🚨 #Shorts #charger #battery

In this video, I will show you how to make a simple battery charging indicator for a 3.7V Li-ion (18650) battery using just a diode, resistor, and two LEDs. ✔️ Red LED = Charging 🔴 This video is only an electrical test to show how LEDs behave when connected with a Li-ion battery. Yes, it will charge the battery, but keep in mind: 🔴 Red LED = shows charging current (dims as battery voltage rises). 🟢 Green LED = does not mean “full.” It only lights up because the battery has voltage. ⚠️ Many videos on YouTube show this same circuit and claim “green = full,” but that is misleading. The green LED glows from the battery itself, not from smart control. ✅ If you want proper and safe charging with real charging / full indication, use a TP4056 or another Li-ion charging IC. 👉 This video is just for learning and experiment purposes. Don’t use it as a practical charger for your batteries. #ElectronicsProjects #BatteryCharger #DIY #MWElectronicsLab This DIY circuit is very easy and perfect for beginners in electronics. It works directly with a USB power supply. 🔋 Components Used: 3.7V Li-ion Battery (18650) 1N4007 Diode 1KΩ Resistor Red LED (Charging) Green LED (Full) USB Charger/Power Supply 💡 Perfect for students, DIY lovers, and electronics hobbyists! 👉 Don’t forget to Like 👍, Share 🔄, and Subscribe 🔔 for more projects. #BatteryCharger #ElectronicsProjects #DIY #BatteryIndicator #MWElectronicsLab