Battery Charge Controller DIY (Auto Cut OFF + Battery Level)

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In today's tutorial we'll learn, how to make an Automatic Battery Charge Controller Circuit with Auto Cut OFF or Over Charge Protection and Battery Charge / Capacity Level Indicator system. The controller is based on the two different circuits, the one is responsible for over charge protection to maintain battery health and the other is for battery level indication, I combined both of these useful circuits and made a schematic and then I ordered the PCBs online from PCBWAY to make this project more professional!

Gerber File: https://drive.google.com/file/d/114UYnceBXIamUQEW53QEFSZU50vNkrID/view?usp=sharing
Schematic: https://drive.google.com/file/d/1502DFn0YFmIR1eZ38I6ivCp1honLjTDr/view?usp=sharing

PCB Components:
1. LEDs: https://www.banggood.com/custlink/mmvvz4DTBP
2. LM3914N IC.
3. Resistors: 1K, 2.2K, 10K, 56K, 100K: https://www.banggood.com/custlink/D3mKzec3A2
4. Variable Resistor: 100K, 10K: https://www.banggood.com/custlink/Dv3EpW2cli
5. Electrolytic Capacitor 33uF: https://www.banggood.com/custlink/KvmyJJMW0r
6. Ceramic Capacitor 104 (100nF): https://www.banggood.com/custlink/DDDDzgG764
7. Terminal Blocks: https://www.banggood.com/custlink/K3mm20DwjQ
8. 5V Relay: https://www.banggood.com/custlink/vGDDM0mu63
9. BC547 Transistors: https://www.banggood.com/custlink/3DmvUe3fbK
10. 1N4007 Diode: https://www.banggood.com/custlink/m3G3k6vw6p
11. Junction.

Other Materials:
1. Multimeter for Calibration: https://www.banggood.com/custlink/3vKv20G2j3
2. 12V Lead Acid Battery.
3. 12V Bulbs.
4. Crocodile Clips.

and some basic tools are:
Soldering Iron: https://www.banggood.com/custlink/mDG3MBGUtW
Soldering Paste: https://www.banggood.com/custlink/GmDDMeDU5u
Hot Glue Gun: https://www.banggood.com/custlink/33vmUBmMZo
Third Hand Tool: https://www.banggood.com/custlink/33KvMgKU92
Drill & Electric Screwdriver: https://www.banggood.com/custlink/GG3m26KkL5
Cordless Drill: https://www.banggood.com/custlink/mGvDk4vMLj
DIY Tool Kit: https://www.banggood.com/custlink/vvmmq6mUjA
Variable Power Supply: https://www.banggood.com/custlink/DDmGz0vMBH

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Видео Battery Charge Controller DIY (Auto Cut OFF + Battery Level) канала Ideas TV