Kharon
Contributor
FWIW, I just got back from diving the Daryaw in Brockville this morning. Water was about 5 or 6 C. I had just charged my Icon HD Net Ready overnight so when I did my entry the battery was at 98 per cent. Buddy and I made our descent to about 25 metres in about 3 minutes and computer started flashing Low Battery warning, battery reading 6 per cent.
You might need a new battery. 6°C is about 42°F ??? - did I do that right? I've dove with mine quite a lot at those temps and haven't noticed anything like that kind of drain over the course of a dive.