Thanks a lot for this Brett. As I bought a Pana for it a while ago, I'll have crack with this. If no good, I'll be right out for a Sony or Varta. I'll let you know how I get on to help others. I'm off to Newfoundland in June, so I'll need to change it soon as the chilly water will probably finish the old one off! Cheers and keep up the good work.