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In this video, the presenter will show you how he modified a common power bank in order to cut down its ridiculously long charging time. He will also explain the power bank circuit. Parts list: 1x Powerbank 1x 4PDT Switch 1x 2S Protection Circuit 1x...
In this video, the presenter is going to convert an old laptop battery pack into a power bank which can be use to charge any smartphone or a gadget. Courtesy: GreatScott!