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Smartphones and tablets are going to get even better batteries in the future, and one company apparently has a different take on batteries rather than sticking with lithium-ion technology. Paper Battery has its own ultracapacitor batteries, which look promising enough to have earned the company $3 million in funding from Caerus Ventures to further develop its patented technology. Ultracapcitors store energy in an electric field, VentureBeat reports, and are much smaller than traditional lithium-ion batteries. Ultracapacitors can deliver large burst of energy, the publication notes, but they offer less power per charge than regular batteries. Paper Battery has one such thin ultracapacitor that can be used as a standalone battery or can be wrapped around lithium-ion batteries to improve battery life. “Paper Battery’s