I have a General Music ("GEM") Equinox synth. A repair guy replaced the 4.8v Ni-cd battery in it last year with a conventional, non-rechargeable type, citing a service bulletin from GEM indicating the possibility of acid leak from the rechargeable, factory installed battery. Now within a year, my data does not save after powering down. Anybody know about this issue and do you think it would be safe to reinstall the old battery as I NEVER had a problem with data saving in the 4 years that the battery and keyboard were in use. By the way: Anyone know where I can buy a new 4.8v Ni-cd barrel shaped battery for my keyboard? GEM is terrible about getting support.