So, my 5 year old GL1200 battery died, so I went looking for a new battery. Dropped by AutoZone, and asked for a battery. They said they had them for the 1500, but not earlier models. So, I asked to take a look at it, and it looked very similar, so I bought a Non-Acid battery. Went to hook it up yesterday, and the size was identical, and looks like it will work well. Just thought I would share this little success. I didn't know the batteries were the same size accross the different models.