GreggS
Contributor
I don't know how well the Puck Pro handles batteries when not in use, but I have used my Suunto Vyper Novo for 3 dive seasons with well over 100 dives and am still on the original battery. The battery has been in the DC continuously since I bought it. It still shows the battery as good eveytime I activate it. If the Puck has a battery indicator that shows the battery level, just check it to see what it is showing before your first dive in the spring. No point opening the computer until necessary.