I have received and installed the new battery into my BQ Aquaris E4.5
Ubuntu Edition. This is a relatively old device (for a smartphone). It
was released in early 2015, I think. Mine was somewhat damaged by the
swelling battery (at least it's my theory which should explain why the
touchscreen has some issues).
It is also going to be dropped by the Ubuntu Touch distribution.
I anyway decided to get the new battery for the device. Even with a
potentially old software it can be used for some tasks.
Now the problem is the touchscreen. It mostly works but in some places
it is less sensitive (or insensitive at all). It does not prevent most
of uses but it is of course not ideal.
But it seems to be good enough as a phone/camera/GPS/notetaking device
for longer cycle travels.