Hi

I am not aware of anything that would cause these issues and certainly not cross those two operating systems as the Windows and Android versions of Firefox are very different.

You didn't have battery drain on windows?

To be fair I do not use Windows (I currently use Xubuntu).

If you are browsing the web a lot on these devices and are looking at pages with large amounts of rich media (such as images and videos), you should expect greater power usage.

Isn't completely true cause Chrome and Edge doesn't have this battery drain