Its actually much easier to get at the battery on the x20/ x30 but it does still involve removal of ribbon cables etc. If you are slightly concerned about undertaking any of the steps outlined below don’t touch the device and pay some one else to fix it.
If you break your device its not my fault, so don't come back shouting here!
You will need a Torx No5 bit/ screwdriver and a pair of fine tweezers would be handy but not essential.
Remove the SD card if fitted.
Lay the device screen side down and remove the two screws from the rear of the device:
Insert your thumb nail between the silver trim and black surround near the top of the device, the main unit will start to ease from the black case:
You can now easily extract the main unit, take care not to exert force on the interconnecting cables. Note the main screen ribbon cable, under the black tape is a small PCB multi way connector, remove the tape for access.
At both ends of the connector strip is a small fragile plastic lever, these need to be eased upwards to release the ribbon cable, they only need to move a few MM in order to release the cable. The other two core plug can stay connected for this job so leave it alone.
You can now see the Torx head screws securing the main board into the housing, remove each of these, once they are all out ease the board from the housing, again the speaker wire stays in place so don't go pulling it around too much - Mike
battery 
Linear Mode
