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2. Common external power supply - Wikipedia

   en.wikipedia.org/wiki/Common_external_power_supply

   Incompatibility of chargers for mobile phones is a major environmental problem and an inconvenience for users across the EU. Currently specific chargers are sold together with specific mobile phones. A user who wants to change his/her mobile phone must usually acquire a new charger and dispose the current one, even if this is in perfect condition.

3. Battery charger - Wikipedia

   en.wikipedia.org/wiki/Battery_charger

   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 , amperes, current, for how long and what to do when charging is complete—depends on the size and type of the battery being charged.

4. Universal charger - Wikipedia

   en.wikipedia.org/wiki/Universal_charger

   All new mobile phones requesting network access approval in China from June 2007 are required to support charging from the new common chargers. The original 2006 regulation is flexible regarding the interface on the mobile phone itself, allowing for the use of adapter cables if the mobile device is not equipped with a standard USB connector. [10]

5. USB hardware - Wikipedia

   en.wikipedia.org/wiki/USB_hardware

   Prior to Power Delivery, mobile phone vendors used custom protocols to exceed the 7.5 W cap on the USB Battery Charging Specification (BCS). For example, Qualcomm's Quick Charge 2.0 is able to deliver 18 W at a higher voltage, and VOOC delivers 20 W at the normal 5 V. [ 76 ] Some of these technologies, such as Quick Charge 4, eventually became ...

6. Quick Charge - Wikipedia

   en.wikipedia.org/wiki/Quick_Charge

   Quick Charge is a proprietary technology that can charge battery-powered devices, primarily mobile phones, at power levels exceeding the 7.5 watts (5 volts at 1.5 amps) supported by the USB BC 1.2 standard, using existing USB cables. The higher voltage available allows more power (watts) to be supplied through wires without excessive heating.

7. AC adapter - Wikipedia

   en.wikipedia.org/wiki/AC_adapter

   Common external power supply describes standards for mobile phone battery chargers. Ferrite bead; MagSafe, a series of Apple power connectors; Power MOSFET, widely used in most mobile device AC adapters. [19] Power supply describes other types of power supplies. Power supply unit (computer)