I've had my Matrix for 11 years with few issues. I just got back from the Red Sea, where my computer worked totally fine on all dives and held a charge well. As soon as I got home, the computer wouldn't turn on or start charging when docked in my computer and in a wall outlet. I know this model has had battery issues and requires the manufacturer to replace the battery, but I can't believe the battery would just die like that instead of losing charge capacity over time. Anyone else have this issue? It also seems like Mares is no longer doing battery replacement on this model anymore - can the manufacturer or someone with recent experience confirm? I would prefer to have the battery replaced than purchase a new computer.