I would say that battery tech has improved enormously in the last few years. Look at the battery life of current laptops and mobile phones and compare that to a

I would say that battery tech has improved enormously in the last few years. Look at the battery life of current laptops and mobile phones and compare that to a few years ago. In part, this is due to decreased energy consumption of the electronics, but in no small part this should be credited to improved batteries, too.