I've just had to make use of Navitotal's Tutorial on disassembly of the x20/x30 to replace the original battery in my 730 and figured that the following additional advice might be useful for anyone doing the same:
Instead of risking severe damage to the main board by trying to pry the glued battery off, try this instead. The battery is encased in a plastic wrapper which covers a metalized plastic sleeve. With the battery still ...