How to Charge 12V Battery With 5V Mobile Charger
by omars2 in Circuits > Electronics
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How to Charge 12V Battery With 5V Mobile Charger
Hi !
In this instructable, you will learn to charge a 12v battery with a 5v mobile charger at home with a simple dc to dc boost converter for voltage step - up.
DC to DC Converter :
The video link for the making of a simple dc to dc converter has been provided below.
Its function is to step up the input applied voltage by 3 to 4 times which can be adjusted by by choosing different values of inductors.
Transistors used for the circuit are 13009 npn.
12v Battery :
The 2nd step is a discharged 12v battery.
Here as you can see in the picture that the battery is at 8.46 v where it should be at at-lest 11 volts which means that its really discharged.
Its actually from an old laptop.
Connection & Testing :
Connections are simple.
1- Connect the +ve of the rectifier to the +ve of battery & -ve to the -ve.
2- Connect the A.C input of the rectifier to the output wires from the dc to dc converter.
3- Connect the input wires of the converter to the mobile charger (+ve to +ve & -ve to -ve)
4- Simply turn on the charger switch and it should start charging.
Thankyou !!!!