12V Battery Protection

Introduction: 12V Battery Protection

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 19 year old from India

Today i'm going to show you How to make a 12V Battery Protection Board .

Very Low Current Consumption Only 1.5mA

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It will protect your battery from Over Discharging

• Cutoff at 10.6V
• Re-Connect at 12.5V

How To Programme ATtiny85

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Step 1: What You Need

Step 2: PCB Layout and Schematics

Step 3: PCB Making

If you Don't Know How to make a PCB Then

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  • Printed The Layout
  • Cut The Copper Clad
  • Press With Hot Iron

See The Image For More Information

  • Put The Copper Clad On Ferric Chloride
  • Remove the Ink
  • Drill The Holes

Step 4: Solder

  • Solder the components

Step 5: Connections

  • Solder The Connector For Inlet And Outlet

Step 6:

  • Hot Glued The Wire to prevent from loosing

Step 7: Finished

  • Just Plug The Battery and you are Good to go

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    Question 3 months ago on Step 3

    What is the discharge amperage rating? I would like to use on a battery pack for my amateur radio which at peak discharges 15-20 amps. Do you sell these? Thanks


    Tip 3 years ago on Step 1

    For the power MOSFET you can use a IRF1404, for the same price if you stay below 40V, that has a lower RDSon resistance and will therefor allow up to twice the maximum current.

    Very nice module, since low power consumption is crucial. Thanks!


    3 years ago on Step 5

    Hi i was wondering if this circuit could be modified to have adjustable cut off. I was planning to use this in a daah cam. So im looking at 12.2 as cut off and 13 as turn back on

    Thank you


    3 years ago

    How much is the quiescent current ? Without any load


    4 years ago

    could IRF840N be used