Sure, CES 2013 is full of groundbreaking smartphone technology - the newest screens, processors and connectivity for our powerful phones - but sometimes all those fancy features can fail you, especially if they drain your batteries, ABC News reports. That's why SpareOne decided it was time to make a really low-powered cellphone that runs on a single AA cell. Just put one in the back of the dumbphone and you can make calls for up to 10 hours. You can also pop your SIM card in to use your regular phone's number. It's really that simple. SpareOne...

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