How to Make a 12v Battery Pack at Home

Introduction: How to Make a 12v Battery Pack at Home

About: Hello friends i show how to make stuff with no skills easy to replicate step by step from powerbanks,generator,invertors and so on thanks

How to make a 12v battery pack at home is an easy project based on multiple Li-ion batteries in series to create a 12v pack. If you need a 12v battery and want to learn how to make it from 18650 cell watch the video it has details on how to make a new battery at home.You can make this battery from 18650 cell that can be harvested from laptop batteries or power banks, a thing that has Li-ion in it can be reused and reconfigured in a homemade battery

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Step 1: Things Needed for the Battery Pack

You have two options one is to solder the batteries and then make your connection series or parallel or mixed

i have found that this 18650 battery holder works just fine and you can reuse them for other projects.

The important steps when making a 12v battery:
Charging the cells

Discharging and see the mAh of each battery

Match them to closed capacity

Make your battery pack by series or parallel connection

Parts needed for this project:

18650 cells

18650 battery holder


Step 2: How to Make the Battery Pack

In the picture, you can see a very easy diagram on how to solder the wire

keep in mind that the positive + and negative - terminals have to have the same length

to keep the pack balanced that's a tip for future arrangements of combined series and parallel connection

Step 3: Inserting the Cells

Is very easy we will alternate the cells when we gonna put them in the first cell up the plus + terminal

second, up part is gonna be the minus - terminal and the 3rd cell with the plus terminal upwards.

If you find this video useful like share and subscribe Thanks for watching and see you next time all the best! Others electronic projects from NO Skills Required: Washing machine motor generator Washing machine motor wiring basics Washing machine motor speed control Incredible washing machine motor on battery

Be the First to Share


    • Finish It Already Speed Challenge

      Finish It Already Speed Challenge
    • Arduino Contest 2020

      Arduino Contest 2020
    • First Time Author Contest

      First Time Author Contest

    2 Discussions


    2 years ago

    Your idea is good, but dangerous!
    First you should never use 18650 batterys or other LiIons, without a protection circuit.
    Second: LIIons in series should always have a load balancer circuit.For examle three batteries in series need a 1p 3s

    Those circuts you can find for cheap on Amazon AliExpress, Ebay and others.