This week, we go over some Super Bowl TV tips, including what to do if you're not going to be near a TV at all. Julie talks about developing new battery life tests, and Josh laments the decline of the compact point-and-shoot camera.

There are more phones with batteries you can't remove than ever before. The trend brings with it many benefits, and a few uneasy "buts."

Looking to boost the battery life of your iPhone 4 or 4S with a case that has a built-in battery? Here are some of your top choices for extended battery cases.

Startup Promethean Power had to ditch its dream of solar-powered milk chillers in rural India, but hit upon a novel energy storage system that's cheaper and overcomes the unreliable grid.

Ener1's EnerDel subsidiary, which is wholly owned, won an $118.5 million grant in August 2009 from the U.S. Department of Energy to develop electric batteries

Another company that received backing from the U.S. Department of Energy files for Chapter 11 bankruptcy protection.

Two almost-identical superphones launched just a few months apart made it look like Motorola held out on us. But the Droid Razr Maxx was more of a happy accident than a plan.

In this roundup, CNET editors highlight five smartphones that showed outstanding battery life in CNET Labs' performance tests.

Startup Eos Energy Storage promises its big batteries will be cheap enough to put in city centers to clear up bottlenecks on the grid and extend the range of EVs. But can they last 30 years?

Researchers are working on a lithium air battery that will make electric vehicles as practical as gas-powered cars.

The California Energy Commission takes aim at improving efficiency of battery chargers for laptops, music players, and larger battery-powered goods.

Under average or moderately heavy use, Samsung phones coming out this year will be able to run without you having to worry about finding an outlet, the company says.