I know you have answered the same question for a diver in the past, however; I explained to my LDS (because I read your last response to this question less than a year ago) that my Sherwood computer The Source could have the battery replaced by sending back for service and that I was willing to pay the fee involved. Dolphin Scuba here in Sacramento, flat out refused and said that they not only as an Authorized Sherwood Dealer refused to send it in for me to have the battery replaced but also refused to show me how to do it. My computer still has a slight charge left on the battery but is obviously going to die completely soon and it's in almost perfect condition and hardly used. Please help me change the battery, I spoke to everyone there at Dolphin all the way up to management, I can't believe there response that Sherwood has fazed this computer out and are unwilling to change a simple battery, I paid good money for this computer, even though it's a dinosaur! thanks, Chris Walker[/B]