To use a power bank without a power switch, first verify compatibility with your device's input requirements. Connect the power bank's USB cable to the bank's output port, ensuring proper orientation. Insert the cable into your device's USB port. Most modern power banks automatically detect connections and initiate charging. Monitor LED indicators (if present) for status. Avoid overloading the bank by checking the maximum supported current. For devices without USB-C, use an adapter. Always disconnect during extreme temperatures to prevent overheating.

Power banks without switches prioritize cost efficiency and compact design, appealing to markets prioritizing affordability and portability. A 2023 report by market research firm Grand View Research noted a 12% annual growth in slim power bank sales, driven by consumer demand for lightweight solutions. These devices rely on built-in circuitry to manage power flow, reducing manufacturing complexity. Safety certifications like UL 2054 and CE ensure compliance with overcharge and short-circuit protection standards. For example, a 2022 study by the Consumer Product Safety Commission found that 78% of portable charger incidents involved devices without manual switches, emphasizing the importance of automatic safety features. Eliminating switches simplifies user interaction while maintaining compliance with safety regulations, balancing accessibility with risk mitigation.