Devices that replenish the battery power of cellular telephones come in a variety of formats. These charging mechanisms can be differentiated by their connector type, power output, and underlying technology. Examples include wired options with USB-A, USB-C, or Lightning connectors, as well as wireless charging pads and portable power banks.
The availability of various power replenishment methods offers increased user convenience and adaptability to different charging scenarios. Historically, proprietary connectors were commonplace, leading to compatibility issues. The standardization efforts, particularly around USB standards, have resulted in greater interoperability and reduced electronic waste. The evolution towards faster charging technologies has significantly decreased the time required to fully charge a mobile device.