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If you're like the typical American, you've probably got about 40 household appliances that you routinely leave plugged in – even when these devices aren't actively being used. But did you ...
In the US the average home used an average of 10,649 kWh of electricity per year in 2019, down from 11,040 kWh in 2008. [10] [11] Each watt of power consumed by a device running continuously consumes about 9 kWh (1 W × 365.25 days/year × 24 hours/day) per year, a little less than one thousandth of the annual US household consumption.
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 and current, for how long and what to do when charging is complete—depends on the size and type of the battery being charged.
Inductive chargers produce more waste heat than wired chargers, which may negatively impact battery longevity. [ 15 ] [ 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 ( watt-hours ), while a wireless charging stand used 19.8 Wh, an increase ...
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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.
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 ...