As smartphones and tablets become more powerful, manufacturers have to play a balancing game. Sure, they could make a gadget that blows the doors off the competition in speed, but it will pay in battery life.
On the other hand, they could make a gadget that lasts days on a single charge, but speed and features will suffer. That's why most take the middle road, and where one of the biggest mobile gadget annoyances comes from.
Yep, I'm talking about charging your gadget. The phone battery is running down and you need to head out for the evening, but it's going to take an hour or more to get a charge that will last you. You could charge up in the car, but if it's a short drive, you still won't be in good shape.
That's why companies are scrambling to make longer-lasting batteries and batteries that charge as fast as possible. There are some promising technologies on the way, but you won't see them for a while. In the meantime, there might be a solution.