Yes all you need is a 13mm spanner and a 10mm spanner......
take your new battery and charge it fully using a car battery charger (ideally a smart one)
leave it to stand for one hour (this allows surface charge to dissipate)
next disconnect the battery negative cable (the red press tap and pull up the black plug)
then remove the negative terminal sensor using a 10mm spanner
then remove the live.....
unbolt battery retainer clamp at bottom of battery tray using 13 mm spanner
Carefully lift out battery
Clean battery clamps with wire wool
clean new battery terminals
if putting larger battery in remove the plastic wedge from the battery tray
place new battery in tray the correct way round as per the old battery
Refit Live terminal.... tap down before tightening
Refit negative battery sensor again tap down (if you look the battery posts are tapered)
Press on black plug till it clicks
apply vasaline (petrolium jelly) or battery terminal grease to the posts thoroughly
and jobs a good one...
You will need to reset the clock the CD player should be fine providing its an original unit (its coded to the body computer so the car see's it as its own)
then drive as normal
It will learn its parameters over a few journeys then settle down....
this is for the last GP but gives you an idea obviously there was no battery sensor and like
https://www.fiatforum.com/grande-punto-guides/257103-grande-punto-battery-replacement.html