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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]
A common EPS must include a cable with a micro USB-B (2.0) connector for connecting to a mobile phone. This cable can be either captive (permanently attached to the power supply) or detachable. If detachable, the cable must connect to the power supply via a standard USB type-A plug. [12]
Inductive chargers produce more waste heat than wired chargers, which may negatively impact battery longevity. [14] [better source needed] An amateur 2020 analysis of energy use conducted with a Pixel 4 found that a wired charge from 0 to 100 percent consumed 14.26 Wh , while a wireless charging stand used 19.8 Wh, an increase of 39%.
The MagSafe Charger is a single charging pad that contains recyclable rare-earth magnets surrounding a Qi wireless charging coil attached to a 1m USB-C cable. The first version of the MagSafe Charger released in 2020 delivers up to 15 W of power on the iPhone 12/12 Pro and newer, with the exception of the iPhone 12 Mini and 13 Mini, which support 12 W. [12] The Wall Street Journal found ...
USB OTG is a part of a supplement [2] to the Universal Serial Bus (USB) 2.0 specification originally agreed upon in late 2001 and later revised. [3] The latest version of the supplement also defines behavior for an Embedded Host which has targeted abilities and the same USB Standard-A port used by PCs.
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