Battery life in general is one of my biggest gripes about modern wireless devices. How wireless are you if you have to carry around a charger and look for outlets. They keep finding ways to make devices smaller; I wish they’d use some of that extra space for more battery. Every new feature that’s added uses more juice which exacerbates the problem.

Better still, design the device so that the entire back is a removable battery pack. That way you could not only swap batteries, but use an extended battery without completely destroying the aesthetics and feel. You’d also have the option to use a smaller pack when size/weight matters more than battery life.

I still look fondly upon the days when I used a REX organizer the size of a credit card that would work for MONTHS on two button cell batteries.