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Impressive iPhone 3GS battery performance

When considering the performance of a battery in a mobile device, the talk is usually all about the hours and minutes available when the battery is new. However, a recent test shows that the older iPhone 3GS battery ages gracefully.
Written by David Morgenstern, Contributor

When considering the performance of a battery in a mobile device, the talk is usually all about the hours and minutes available when the battery is new. However, a recent test shows that the older iPhone 3GS battery ages gracefully.

In a recent test of the iPhone 4's battery life, Macworld's James Galbraith compared the new model with the old. He used a coworker's year-old iPhone 3GS. He worried that the older phone had aged and wouldn't provide a fair comparison. However, at the last moment, he was able to get ahold of one just a couple of weeks old.

The difference between the new and old 3GS phones? Only 7 percent. That sounds very good to me.

Of course, the iPhone 4 is way better.

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