Hello,

Have a look at this page:
https://obddiag.net/usb-power.html

Bertus

Hi I read the article but I have question: will my samsung device charge if I dont do the instructions on the page you mentioned to make the device recognise that it is the native charger?

 

Hello,

On a basic charger, the phone will likely charge with 500 mA.
When the D-pins are connected, as on the page, higher currents will be used.

Bertus

 

Hello,

On a basic charger, the phone will likely charge with 500 mA.
When the D-pins are connected, as on the page, higher currents will be used.

Bertus

thanks a lot. I found some charger modules in shops which are specially designed for this purpose I think those modules can solve my problem.

 

So thanks to you all only one question is left and that is how to control the input current from the car to 12v battery to charge it