My XperiaX is starting to show battery end-of-life symptoms, nowdys it hardly holds up to a whole day and drops to 10% around the late evening. (telegrame is what's eating the batery most)

Could people who have done DIY battery repairs give some pointers to where to order the battery and the extra bits needed for the repair? (It seems to need some special sticky tape and so on...)

It is easiest the best SFOS phone I have had and wojld be shame to scrap ot just for the flat battery...