RonR
Contributor
Joe,Ron, I have had my new Cobalt completely die on me from battery issues. It wouldn't even take a charge. Took it back to Atomic and they did something to it, but certainly didn't fix it. I charged it four weeks ago and didn't use it at all until today when I was getting camera and dive gear ready for a trip next weekend. However, it is completely dead again and all dive data is gone, but it is charging. It shouldn't die like that. It should be at about 80-80% charged. I am having to use my old Edges as back ups. As much as I know and like Doug Toth, I am very disappointed in the Cobalt and wouldn't recommend it to anyone at this stage of its design performance and reliability. It first died in August when I charged it the night before a dive. I then checked it out on my tank and everything was cool. Got on the boat the next day and it was completely dead and would not take a charge. Luckily I had an old bourdon tube SPG back up with me and one of my Edge computers. Since then it has been repaired. Today it failed again, one week before a dive trip. I am completely unhappy with it. If you have any suggestions they are most welcome. But come Monday I am taking it straight to Atomic and asking for a new one. Joe Belanger
You're right- it shouldn't die like that. Pretty much the only thing that could cause what you are describing is water getting into the electronics- most likely into the battery compartment, and it sounds like it has done so repeatedly. Even if it will take a charge after sitting for a while, I would not try to use it- probably the moisture is drying out enough between trips or between dives to enable charging, but if the basic problem is not repaired then it will just happen again. At some point the electronics will short out totally from the water and the unit will fail. I don't know what was done to it earlier (was it replaced? repaired?), but if you see the Cobalt lose charge when idle much more than 1-2% per day, it indicates a real problem- most likely a leak, but possibly a bad battery- that needs to be fixed before using it. That's assuming it is being stored in a dry environment and not with the power/ USB adapter attached to the Cobalt. The electronics on the Cobalt have been highly reliable, but not when water gets into them- then we start to see things like what you are describing.
You say all the dive data is gone- that would be surprising as it is stored in nonvolatile memory and should still be there after power is gone. Did you mean for the current dive (which data could be lost if it failed during a dive), or that the dive log is empty?
The best suggestion I have, it you are local to Atomic, is to take it back and get the case checked out, or replaced. If water has been sitting in it for a long while, causing the battery to drain, there may be internal corrosion. And any time the battery has gotten wet it should be replaced, even if it appears to work OK.
Ron