power bank, a portable charger for electronic devices Solar powered Capacity: Power banks like this often have a high capacity, with some models offering 50,000mAh or more, which can charge a smartphone multiple times. Ports: They typically feature multiple output ports, including USB-A and USB-C, to charge several devices simultaneously. Features: Many models include a digital display to show the remaining battery percentage, and they often support fast charging technologies like PD and QC 3.0. Physical Characteristics: Due to their large capacity, these power banks can be heavy and bulky. Airline Restrictions: Power banks with very high capacity (e.g., 50,000mAh or more) may have restrictions on being taken on an airplane.
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