I recently opened up my wife's storage and found she has a brand new,never opened or charged Dacor SV 900 SEASPRINT. It came w/ a charger but no instructions. I can't seem to open it (w/out damaging it!) and I need to know if the battery is still good (hold a charge). It's been in storage for probably close to 15 years so I have my doubt's . . . but I still need to crack this thing open. Could the seal's have melted and sealed it? Any suggestions would be greatly appreciated. I recently learned that Dacor has gone out of biz so they wont be of much help. Thanx!