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2. Active State Power Management - Wikipedia

   en.wikipedia.org/wiki/Active_State_Power_Management

   This is usually managed by the operating system's power management software or through the BIOS, thus different settings can be configured for laptop battery mode versus running from the battery charger. Low power mode is often achieved by reducing or even stopping the serial bus clock as well as possibly powering down the PHY device itself.

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. IEC 62700 - Wikipedia

   en.wikipedia.org/wiki/IEC_62700

   IEC Technical Specification 62700: DC Power supply for notebook computer is an IEC specification of a common standard for external laptop computer AC adapters.Laptops and AC adapters following this standard will have interchangeable power supplies, which will enable easy reuse of used power supplies (thereby reducing electronic waste) and make buying a new compatible power supply for a laptop ...

5. Laptop - Wikipedia

   en.wikipedia.org/wiki/Laptop

   A laptop's battery is charged using an external power supply, which is plugged into a wall outlet. The power supply outputs a DC voltage typically in the range of 7.2—24 volts. The power supply is usually external and connected to the laptop through a DC connector cable. In most cases, it can charge the battery and power the laptop ...

6. AC adapter - Wikipedia

   en.wikipedia.org/wiki/AC_adapter

   A battery eliminator is an adapter intended to allow a device intended for battery operation, such as a radio, to be operated from an AC outlet. [10] All radios, except crystal sets, used inconvenient and messy vacuum tube batteries until the mid- to late-1920s. Battery eliminators that plugged into light sockets became very popular. [11]

7. USB hardware - Wikipedia

   en.wikipedia.org/wiki/USB_hardware

   On Dell, HP and Toshiba laptops, sleep-and-charge USB ports are marked with the standard USB symbol with an added lightning bolt or battery icon on the right side. [83] Dell calls this feature PowerShare, [84] and it needs to be enabled in the BIOS. Toshiba calls it USB Sleep-and-Charge. [85]