You're not going to get the same type of battery life you see out of smaller devices, but for one of this type, it's pretty solid.

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This type of battery has an unusually high energy density, which means the units can be smaller and thus lighter for a given amount of power than traditional batteries.

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The Tesla Model S is a plug-in electric luxury sedan than can travel between 160 and 300 miles on a single charge, depending on the type of battery chosen.

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Unlike in most batteries, where one chemical turns into another chemical as it releases or stores charge, the vanadium in this type of battery simply takes on or releases electrons.

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There's intrigue in this type of charging because as long as you have the proper sleeve or battery cover attached, you can easily charge your gizmo just by placing it on a compatible pad.

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Khare's device, a black, rectangular type of supercapacitor just over an inch long, can charge a cell phone battery in 20 to 30 seconds, she said.

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Plug-in hybrids remain the type of electrified vehicle that makes the most sense because they release the driver from dependence only on a battery-fed powertrain.

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