21" Simpli-Start self-propelled (push)mower

[a7117puller 0]

Does anyone know anything on this? I recently aquired it. Its electric start, but the battery needs to be replaced. I don't know what to replace it with, or what voltage it is. I plan to show it at the local show in 2 months. Thanks.

[KSever 8]

Wow...electric start push mower? Never seen that, and I thought I'd seen everything when I found my 21" Walkbehind Toro "Commercial" Mower (2 stroke) which has a 3-speed transmission driving the rear wheels.... How old is that bad boy? What h.p.? Can you post a picture? Why do I have this "old lawn equipment fetish," anyway? LOL! Peter