Have been using a ROLAND XP50 since 1996.
Recently changed to a new backup battery at the shop (where they overcharged me by $50).

3 months later - the LOW BATTERY sign is on.

I changed the battery by myself.

3 months later (less actually) - the LOW BATTERY sign is on (again).

I then changed the battery immediately.

3 seconds later - the LOW BATTERY sign is on (yet again!)

Most people don't have this problem. Any suggestions? Help anyone?