Posted for "Rick Lafford" <gliderguy89@earthlink.net>:

 Try Pacific Battery Systems. They have them for $44.90 and no shipping and
 includes the offer of a free battery condition indicator.
 
 http://www.pacificbattery.com/batteryminder.html
 
 Regards,
  Rick
 
 Rick Lafford
Finger Lakes Soaring
 DSV