Phone charging difference: 12V vs, 9V vs. 5V?

[MarcusNow]

I have that less voltage means less heat but needs thicker and shorter cables to have the same charging speed.
Huawei phones charge at only 4 volts but 5 A? And some phones charge at 12V but only 1A or 2A?

Can anyone explain the differences?
Thanks.

 

[Darth]

Hi! Take a moment before posting to read the sections description, you'll have better luck reaching your target audience when you post in the correct section.

I'll move this to Questions and Answers, since it does not pertain to xda. :good:

 

[Ibuprophen]

I have that less voltage means less heat but needs thicker and shorter cables to have the same charging speed...

This is a challenge to explain but, the following link is a very good one regarding this topic expanded a bit.

https://www.howtogeek.com/175734/htg-explains-can-you-use-any-charger-with-any-device/

I hope that it explains it a bit better for you...


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