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A USB charger that supports QC3.0. Quick Charge (QC) is a proprietary battery charging protocol developed by Qualcomm, used for managing power delivered over USB, mainly by communicating to the power supply and negotiating a voltage.
A number of extensions to the USB Specifications have progressively further increased the maximum allowable V_BUS voltage: starting with 6.0 V with USB BC 1.2, [42] to 21.5 V with USB PD 2.0 [43] and 50.9 V with USB PD 3.1, [43] while still maintaining backwards compatibility with USB 2.0 by requiring various forms of handshake before ...
An AC adapter or AC/DC adapter (also called a wall charger, power adapter, ... 2007 released the USB Battery Charging Specification which defines, " ...
A battery charger, recharger, or simply charger, [1] [2] is a device that stores energy in an electric battery by running current through it. The charging protocol—how much voltage and current, for how long and what to do when charging is complete—depends on the size and type of the battery being charged.
USB-C plug USB-C (SuperSpeed USB 5Gbps) receptacle on an MSI laptop. USB-C, or USB Type-C, is a 24-pin connector (not a protocol) that supersedes previous USB connectors and can carry audio, video, and other data, to connect to monitors or external drives. It can also provide and receive power, to power, e.g., a laptop or a mobile phone.
After previous connectors were deprecated in USB 3.2, the new USB-C plug has become a new standard for charging (and data transfer) over USB. [13] In the European Union, the Radio Equipment Directive 2021/0291, requires new smartphones to use USB-C as a universal charger by the end of 2024, and laptops by 2026. [14] [15]