Simple USB Battery Charger Circuit with Auto Full Charge Indicator | 3.7V Li-ion Charger DIY

Описание: Simple USB Battery Charger Circuit with Auto Full Charge Indicator | 3.7V Li-ion Charger DIY #shorts

In this video, learn how to make a 3.7V Li-ion battery charger circuit using simple electronic components like 1N4007 diode, LEDs, and resistor.
This DIY circuit shows charging and full-charge indication using red and green LEDs. It’s a perfect beginner electronics project to understand how battery charging works from a USB power source (5V).

📘 Components Used:

1 × 3.7V Li-ion Battery
1 × 1N4007 Diode
1 × 1kΩ Resistor
1 × Red LED (Charging Indicator)
1 × Green LED (Full Charge Indicator)
1 × USB Cable


💡 Working:

When the battery is charging, the red LED glows. Once the battery is full, the green LED turns ON automatically showing “Full Charge”.

📺 Topics Covered:

Li-ion battery charger circuit
Auto full-charge indicator circuit
USB charging DIY project
Simple electronic project for beginners


⚡ Tags:
#BatteryCharger #ElectronicsProject #DIYCharger #USBCharger #LiionBatteryCharger #TechSparks #3_7VBattery #LEDIndicator #ElectronicsForBeginners #SimpleCircuit

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