Battery Brief

Reuters has a new article on batteries in MP3 players. If you're already familiar with battery technologies for portable gadgetry, it may not tell you anything new. However, it does touch on some of the ways battery technology choices affect your device.

"All other things being equal, probably the best kind of battery you are going to find is lithium polymer," he said. "That's what the original iPod had."

Based on an average playing time of four hours a day, IRiver says, its battery will last four to five years before it no longer recharges. IPod's battery lasts a couple of years.

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