Panasonic has certainly gone out of its way to promote their new Evolta (Evolution + Voltage) AA battery cell. They sent a 5 oz. robot climbing up a rope suspended from the Grand Canyon for almost 7 hours on a pair of them and earned a place in the Guinness Book of World Records as “the longest-lasting AA alkaline battery cell.” If the 6.7-inch blue bot, also named Evolta, looks familiar, it was designed by robotics scientist Tomotaka Takahashi. Although the batteries are about 15% higher than the competition at $5.40 for four, they are already doing so well in Japan that Panasonic plans to send them overseas later this year.
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