Juicing Up Your Gadget Battery Power

I've written about keeping your devices powered while on the road before, and looked at techniques to reduce draw -- like reducing screen brightness and switching off phone radios. I also took a broad-brush look at different technologies, like battery packs and solar. Now I'm going to explain how to choose the right rechargeable battery, called a "secondary cell"; and choose the right technology, like solar, to increase your time between battery charges.

Source: http://ectnews.com.feedsportal.com/c/34520/f/632000/s/21f91376/l/0L0Stechnewsworld0N0Crsstory0C7580A10Bhtml/story01.htm

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