Hello!

If I post here pictures of the inside of those generic cheap chargers, you can tell by looking at the pictures if it's a safe charger with all the safety "stuff" needed? for example surge protection or stuff like that? Because I heard that cheap chargers can damage your device, or yourself?
I can post a genuine galaxy s3 entrails picture if you want to compare as well

Good day!

 

If you post the pictures, you may or may not get a response.
If you can post the schematic, there are chances of a discussion, opinions.
The decision is still yours, but with more inputs.

Ramesh

 

Ok, I updated, here is a picture of the inside of a genuine galaxy s3 charger, later I will open a generic charger to compare.

 

...you can tell by looking at the pictures if it's a safe charger with all the safety "stuff" needed?

I don't think it is appropriate for this forum to make a remote judgement of the safety of a device that can cause injury or death.

 

I don't think it is appropriate for this forum to make a remote judgement of the safety of a device that can cause injury or death.

I guess you are right
but assuming this genuine galaxy s3 charger is safe, you can tell what everything does? I mean as an expert?

 

I see two high voltage capacitors (C1 and C2), inductor (L1), perhaps a fuse (F1), two low voltage capacitors (C21 and C22), a transformer (T1) and a USB connector. The voltage regulator could be on the other side of the PCB. There is an unidentifed component (possibly a transistor Q1) covered with white goo.

If you are concerned then stay away from a cheap generic charger.