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  2. AC adapter - Wikipedia

    en.wikipedia.org/wiki/AC_adapter

    An AC adapter or AC/DC adapter (also called a wall charger, power adapter, power brick, or wall wart) [1] is a type of external power supply, often enclosed in a case similar to an AC plug. [2] AC adapters deliver electric power to devices that lack internal components to draw voltage and power from mains power themselves.

  3. Laptop charging trolley - Wikipedia

    en.wikipedia.org/wiki/Laptop_charging_trolley

    Laptop charging trolleys, also known as laptop trolleys or laptop carts, are mobile storage containers to charge laptops, netbooks and tablet computers en masse. The trolleys are predominantly used in schools that have replaced their traditional static ICT [ 1 ] suites of desktop computers with laptops, but do not have enough plug sockets in ...

  4. Compaq LTE Elite - Wikipedia

    en.wikipedia.org/wiki/Compaq_LTE_Elite

    A major feature of the LTE Elite series was the integration of the AC adapter into the main body of the laptop. Instead of a connector for DC input, the laptop takes a standard "figure-8" connector for AC power. This eliminates the need for an external power brick and was the first time this approach had been done in a notebook-sized computer.

  5. USB hardware - Wikipedia

    en.wikipedia.org/wiki/USB_hardware

    On laptops, charging devices from the USB port when it is not being powered from AC drains the laptop battery; most laptops have a facility to stop charging if their own battery charge level gets too low. [83] On Dell, HP and Toshiba laptops, sleep-and-charge USB ports are marked with the standard USB symbol with an added lightning bolt or ...

  6. Inductive charging - Wikipedia

    en.wikipedia.org/wiki/Inductive_charging

    The primary coil in the charger induces a current in the secondary coil in the device being charged. Inductive charging (also known as wireless charging or cordless charging) is a type of wireless power transfer. It uses electromagnetic induction to provide electricity to portable devices. Inductive charging is also used in vehicles, power ...

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