DIY Lithium Battery Charger

About: Hi my name is Steve and i'm a Creative and I got Technical skills i can build anything just stick to my account . I'm a YouTuber so you also can see my all videos here https://www.youtube.com/SteveWillsonKujur

Hey! everyone My name is Steve.

Today I'm gonna show How to Make a Universal Battery Charger it can charge any battery up to 22 Volt and it can deliver up to 100 watts fo power

I'll use this charger to charge my 18650 4S3P Lithium-Ion Battery

Click Here to See The Video

Let's Start

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Step 1: Features

Input Power

  • 110-220 v AC

Output Power

  • 1.25-24 v DC Adjustable at 8 Amps
  • Max output 100 Watt

Built-in Protection

  • Short Circuit Protection
  • Over Load Protection
  • Over Charge Protection

Charger Features

  • Constant Current Charging
  • Constant Voltage Charging
  • Full charge indicator
  • Charging Indicator

Continuously asked Questions

Q - Can I leave it overnight

A - Yes! For Sure this will not overcharge your battery just because we're using constant voltage there will be no potential difference to make your battery overcharge but you just need to set it correctly

Google it for more information


Note - Please see the images for better understanding

Step 2: Thing I've Used

LCSC

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Banggood

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Amazon

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Aliexpress

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Note - Please see the images for better understanding

Step 3: 3D Printed Enclosure

I used Fusion to design my Enclosure

3D Printing Files - http://bit.ly/2kXDxIs

Note - Please see the images for better understanding

Step 4: Sponsor

Today's Article is Sponsored by lcsc.com

They are the Largest Electronics Components Supplier From China Ready to Ship within 4 Hours and they ship World Wide

Step 5: Wiring Diagram

Note - Please see the images for better understanding

Step 6: Assembly

    I gathered all the component and started with installing the 2 main boards first I've installed the step-down converter module and then I've installed the SMPS Module using couple of screws

    Note - Please see the images for better understanding

    Step 7: Soldering Power Socket

    First, I've tinted the legs of the power socket and then used some small size wire to connect it

    Make sure you do this

    • This module has 3 things, 1 Fuse 1 Switch 1 Socket make sure you connect all the things in series the fuse is already connected in series with a socket you just need to connect the switch with socket


    Note - Please see the images for better understanding

    Step 8: Soldering Voltmeter & Ammeter

    I always try to use some good quality silicone wire as it is softer to handle and can handle high amps and high temperature I soldered 3 wire to the Voltmeter and used some heat shrink tube to shield it

    Note - Please see the images for better understanding

    Step 9: Wiring

    It is very hard to write connection over a text So it is highly recommended to see the wiring diagram

    After connecting all the wire I've soldered the XT60 and then used some heat shrink tube to shield it

    and then used some bolt to fix XT60 in place

    Note - Please see the images for better understanding

    Step 10: Wiring Power Socket

    Used some force to push power socket in place and used a screwdriver to insert the wire in place

    Note - Please see the images for better understanding

    Step 11: Wiring Completed

    Note - Please see the images for better understanding

    Step 12: Power Cord

    I've inserted the power cable and turned the switch on

    Note - Please see the images for better understanding

    Step 13: Setup

    Potentiometer

    • Right - Current
    • Left - Voltage

    Increase and Decrease

    • Clockwise - Increase
    • Anti-Clockwise - Decrease

    Setting Up

    First I used a small screwdriver to adjust the voltage via left potentiometer and then I've connected the battery and set the current via right potentiometer

    Note - You can't set the current without any load " So be sure to connect the battery first and then set the current "

    3SLithium Battery

    • Voltage - 12.6V "4.2 x 3 = 12.6"
    • Current - According to the manufacturer

    4s Lithium Battery

    • Voltage - 16.8V "4.2 x 4 = 16.8"
    • Current - According to the manufacturer

    5s Lithium Battery

    • Voltage - 21V "4.2 x 5 = 21"
    • Current - According to the manufacturer

    Led Acid Battery 12V

    • Voltage - 13.8v
    • Current - According to the manufacturer

    Find out the current " Only For Lead Acid Battery "

    • Use this formula - Battery Capacity x 1/10 = setting

    Example " Only For Lead Acid Battery "

    • I used a 7 amp battery, now let's put the formula
    • 7 x 1/10 = 0.7 and here I set it to 1 amp " You can go for little higher current but not too much "

    Note - Please see the images for better understanding

      Step 14: Finishing

      I used 4 screws to close the upper half and then I put 4 rubber legs "pad" to bottom

      Note - Please see the images for better understanding

      Step 15: Finished

      That's all for today guys!

      Click Here to See The Video

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