My bike (500R) has what I think is the original battery in it. I have filled it with tap water twice now. LOL My friend's 500R had a sealed battery in it, but we removed it when we saw how it was installed. The battery is just a tiny bit too tall to fit right and the terminals were not in the correct location. There was no bolt holding the electronic pack over the battery and the was scotch TAPE involved. We got him a new old school lead acid battery and put that in. The problem is that all of the sealed batteries I have seen on the net are the same height, which is too high. What are you all using in your 500R's? I am gonna need a new one soon I would say. I filled it again today with tap water (hard as **** too in FL), as the cells were like DRY. What do you say?
CB
CB