Just got a Z1 and i am currently trying to figure out a workflow for HDR shooting on filmsets.
The battery life seems to be extremely bad. The battery drains really quickly even if i dont do much. I am just connecting to wifi with various apps and dont even do any shooting. Battery drains within 2 hours.
Even after fully charging the z1 and then turning it off (yes i made sure its off and not in sleep mode) the battery drained to 20% within one day without using it.