I got a Montgomery signature 2000 18hp last fall for $50 bucks which had a steering problem and no battery. I fix the steering problem and changed out one of the spindle from a used deck I had, I then put a new battery 5"X8" and placed it on the foot rest and secured it with bungee cords. Now IÂm going to give it to my sister since I just bought a zero turn mower and now will never use nothing else but zero turn. My sister wants to pay to get the original battery 3"x5" that fits under the seat, and I just donÂt think this old mower is going to start right with such a little battery and I was told at Wal Mart that they have no warranty. She's afraid of having the battery so close to her foot and I donÂt want her to spend twenty plus dollars for what might not work very long, so has anyone out there had any long term luck with these tiny batteries???