Li-ion charger using LM317 🔋#Easy & safe circuit for 3.7V cells! #Experiment project Shorts #DIY

🔧 Build a Simple Li-ion Battery Charger using LM317 | DIY Electronics Project!

In this video, I’ll show you how to make a safe and effective Li-ion battery charger using the LM317 voltage regulator, a few resistors, capacitors, and a diode. This project is perfect for charging 3.7V Li-ion cells (like 18650) at home with basic electronics skills.

This DIY charger is great for students, hobbyists, and makers who want to understand how a linear voltage regulator works in real applications.

⚙️ Components Used:

LM317 Voltage Regulator

1N5899 Diode (for reverse current protection)

(150 ,390)Ω Resistors (for voltage control)

1000µF Capacitors (for output & input stability)

LED (optional for charging indicator)

Heatsink (recommended for LM317)

🔋 Features:

• Safe charging for 3.7V Li-ion batteries ✓

• Constant current + voltage regulation ✓

• Compact and easy to build ✓

Видео Li-ion charger using LM317 🔋#Easy & safe circuit for 3.7V cells! #Experiment project Shorts #DIY канала TinkerVolt