txracer I have a 750 spirit as well. They have a "sensitive" battery are you sure she needs a new battery? If you do not start the bike at least once every 2 weeks you can expect that it may go dead. It even says in the manual. If she does not ride it that often, a batter tender (also reccomended in the manual) would be your best bet. You can find one at walmart for lesss then $20. After having said all of that LMK were you what battery you go with, I will probably replace my in the next 6 months as it is the orginal.
Sherri