-Power banks are one of the most common mobile accessories used today. They are sophisticated portable battery packs connected with a control circuit. The purpose of a power bank is to recharge battery-powered electronics like smartphones, tablets, and speakers; when might not have access to a wall outlet to charge your phone. The very first Power Bank was created in 2001. It was manufactured by a Chinese company named Pisen. The original power bank was dual AA-sized batteries pieced together with a controller circuit. It was bulky with short battery life. This primitive power bank was introduced at the Las Vegas International Consumer Electronics Show. Now we have compact power banks with sophisticated designs and superior battery life
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