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Your dive computers is using battery for almost 2 years, you have 67 dives and battery is drained. And you are complaining I would understand your complaints if you had 67 dives during 2 months and batter would be dead. But now..... change your battery and enjoy diving.
So, I did change the battery. It lasted three months and 26 dives. Should have bought a new computer….
See this thread: D4i Tale of Woe - What Next? [long]
Better just buy a new dive computer.
Yeah. Nice computers. Way beyond my means. More computer than I really need.
These days pretty much all my dives are easy, guided, recreational dives. I'm looking for something in the US$400 range.