Thanks to Paul Mort .... as he provided by far the best response to my original HELP !!!! thread - LOL.
  I'm still stuck with my gel battery.....but it does hold a charge beautifully  - shame its still in the box 
  ANYWAY......here is a link to the manufacturer website for the peeps who made the Gel battery I have - there is all sorts of info there....  
http://www.odysseyfactory.com/ody_why.htm  Good Luck 
 ps - Interestingly my oxford oximiser that really does work wonders on my Lead Acid battery specifically states it DOES NOT work with Gel batteries !!!