I've recently read about a replacement with the lg g2 battery, which lasts longer (300 mah) but has the same size. As soon as possible I'll post the link, just looking for it ;)
I believe es file still has problems with 5.0, not the ROM. Try another file manager.
It was the ROM, I flashed the patch pie and now everything is fine. Actually on my previous L ROM it worked perfectly :)
i currently have lpx13d... can i dirty flash or will i have to clean flash?
a clean flash would certainly be better :)