Since my P-250 is a 2008, and I don't want to chance having the battery crap out, I decided to put it in my Four wheeler and buy a new one for my scooter. I found the right one at Wally world. Glass mat type, etc. Well I guess it was on the shelf for a long while-It still doesn't charge as fast my old one. The battery is exactly the same OEM as the origional. A fresh (6 mo old or less from time of manufacture to purchase time) battery is best and will give you the longest life. I have got 2-3 years if I keep it on a Battery Tender (1-1/4 amp model). An interseting note is that my Battery tender Jr (3/4 amp) will never bring it up to 100 %-but the 1-1/4 amp will every time. So if you have a smaller amp smart charger, and you purchase a battery that has been on the shelf 2 yrs it will be harder to charge, dissipate sooner and go bad sooner too. I have had this same thing happen 3 times on batteries over the past many many years. I am trying to figue out the battery manufactures build dates / codes and will pass on the information. Maybe I should just take my meter in the store and check dry cell voltage before I buy!. Sorry for being long winded.