10/09/2007

Cell phone like a hybrid car

How is your cell phone like a hybrid car? No, that is not a setup for a punch line. Seriously, the implications of that question may play a big part in the state's economic development future.

Think back three cell phones ago to the one that might have lasted a day without recharging. And then you had to plug it in right after work so it would be ready for the next day. It used nickel cadmium batteries. Now, remember how thrilled you were that the next cell phone's battery held a longer charge? Those were nickel-metal hydride batteries. Yes, it is hard to remember. Today's lithium ion batteries last far longer and take much less time to recharge. That's precisely why today's cell phones, computers and iPods can do more with less down time. The batteries currently used in hybrids are like those in the second example.

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