Introduction: Jump Start a Car in 5 Minutes ! - With DIY 12v Dead Car Battery Charger
In This Video I Will Show You a Way To Jump-start a Car In Just In Just 5 Minutes With Parts You Have Inside Your Home Like SMPS (Switch Mode Power Supply ) From Old Pc And a Dc-Dc Step Up Converter
You Can Set-up This Battery Charger Within 2 Minutes And Charge Your Dead Battery Enough To Start The Battery
Watch The Video
So Let's Make It !
Step 1: You Will Need
1. Switch mode power supply (SMPS) ( Free !)
2.150 Watt Dc-Dc Step Up Converter ($2.51)
3. 12v Fan (Free !)
4.Voltmeter + Ampmeter ($2.39)
5. 2*10 Amp Diodes($0.9)
Step 2: Connect It Up !
1. Connect 12v From SMPS To Dc-Dc Converter
- It Will Convert 12v Dc Into 14.2v Dc , You Have To Set Voltage Using a Trimmer.
2.Connect A Panel Meter to Measure Battery Voltage And Current.
- It Will Display Voltage & Current ,Not Necessary But Good To Have.
3. Parellel Two Diodes And Connect them At The Output of Dc -Dc Converter
- Diodes Will Prevent Backward Current Flow i.e. From Battery To Dc-Dc Converter .
4. Lastly,Connect Fan For Cooling
- Keep Dc-Dc Converter cool , Since We're Converting Decent Amount of Power Through It.
Step 3: Calculations to Jump Start a Car in 5 Minuites !
According to my measurements , a one engine crank needs 960mAh of energy 12v @80 Amp For 3 Seconds ! (It may Vary Depending On Car Off course) ,With This Charger We,re Putting 14.2v @ 4-5 Amp (Or More Current If Thick Wire Is Used) Which Totals 70 Watts Power Feeding Into The Battery(Converter Can Safely Deliver Upto 100 Watts Power) But consider 70 watts for 5 minuites (300 Seconds ) , Battery Should Accumulate 2.1 Ah of Charge (It Will Be Less somewhat Due to Various Losses) But It Will Easily accumulate enough energy to Jump start a Car In 5 Minutes Very Easily !
This is Life Saving If You Can't Move or Push a Car , Just Like What Happened To Me .
Note : I Failed Once in a Math ,But Don't Get Me Wrong This Time Calculations Look Pretty Solid To Me .(Please Correct Me If I Wrong ! )
Step 4: Jump a Car !
1. Grab a Power Strip & Connect Charger we've just built.
2.Charge The Battery For About 5 Minuites.
3. Normally It Will Accumulate Required Energy In 5 Minuites, Remember that Battery And Charger Should Be Connected While Starting The Car ,And Remove Charger Once It Starts.
