It depends on how you use them. I travel full time so I primarily use mine for nature photography. 15 min is usually plenty of time and if not I have a 2nd batt

It depends on how you use them. I travel full time so I primarily use mine for nature photography. 15 min is usually plenty of time and if not I have a 2nd battery that takes no time to swap. It would be nice to have longer battery life but it's not a deal breaker. The only cases where needing more time would be a big deal would be for filming something that lasts longer than the battery.