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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. Quick Charge is supported by devices such as mobile phones which run on Qualcomm system-on-chip (SoCs), and by some chargers; both device and ...
Universal charger or common charger refers to various projects to standardize the connectors of power supplies, particularly for battery-powered devices. Since the publication of the USB Power Delivery standard in 2012, and the USB-C connector in 2014, USB-C has become a widespread standard for charging mobile phones.
Additionally, if these devices support fast charging, they must support USB Power Delivery. These regulations will extend to laptops by early 2026. [102] To comply with these regulations, Apple Inc. replaced its proprietary Lightning connector with USB-C beginning with the iPhone 15 and AirPods Pro second generation, released in 2023.
The USB standard included power supply to peripheral devices; modern versions of the standard extend the power delivery limits for battery charging and devices requiring up to 240 watts. USB has been selected as the standard charging format for many mobile phones , reducing the proliferation of proprietary chargers.
A simple charger for Ni–Cd batteries that outputs 300 mA of 12 V DC. A simple charger works by supplying a constant DC or pulsed DC power source to a battery being charged. A simple charger typically does not alter its output based on charging time or the charge on the battery.
USB was designed to standardize the connection of peripherals to personal computers, both to exchange data and to supply electric power. It has largely replaced interfaces such as serial ports and parallel ports and has become commonplace on various devices.
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[79] [80] It is also used to charge electric vehicles such as cars and to either charge or power transit vehicles like buses and trains. [ 57 ] However the fastest growing use is wireless charging pads to recharge mobile and handheld wireless devices such as laptop and tablet computers , computer mouse , cellphones , digital media players , and ...
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