For those who need to replace the lithium battery in the xp deus coil and would like the metal detector to work longer. Some photos of procedure:
These are new batteries with larger capacity – 1000 mAh.
Standard battery vs Alternative battery
It’s size in comparison to standard xp deus battery:
New battery inserted inside the search coil:
Coil is restored:
Also one my friend used DIY change in 9” search coil also with battery of larger size for longer life during prospecting (60 mm x 18 mm and 9 mm thickness) and it perfectly fit to the battery slot:
Where to buy XP Deus battery for replacement?
If you are from the UK you can buy the battery of standard size for replacement from this seller on eBay.
This size is fit both to remote control, headphones and coils.