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2. Kill A Watt - Wikipedia

   en.wikipedia.org/wiki/Kill_A_Watt

   This is an enhanced version, based on the Prodigit 2022, [7] which includes a backup battery to store measurements even when disconnected from electricity. It has the same capabilities as the P4400, and can be programmed with electricity cost information, which enables it to display the cost of the electricity consumed since reset.

3. Uninterruptible power supply - Wikipedia

   en.wikipedia.org/wiki/Uninterruptible_power_supply

   The offline/standby UPS offers only the most basic features, providing surge protection and battery backup. The protected equipment is normally connected directly to incoming utility power. When the incoming voltage falls below or rises above a predetermined level the UPS turns on its internal DC-AC inverter circuitry, which is powered from an ...

4. Standby power - Wikipedia

   en.wikipedia.org/wiki/Standby_power

   Battery-powered equipment connected to mains electricity can be kept fully charged although switched on; for example, a mobile telephone can be ready to receive calls without depleting its battery charge. It enables devices to either turn on or off into a standby state automatically without human intervention (for example, a timer or Wake-on-LAN).

5. Power supply - Wikipedia

   en.wikipedia.org/wiki/Power_supply

   An uninterruptible power supply (UPS) takes its power from two or more sources simultaneously. It is usually powered directly from the AC mains, while simultaneously charging a storage battery. Should there be a dropout or failure of the mains, the battery instantly takes over so that the load never experiences an interruption.

6. Brownout (electricity) - Wikipedia

   en.wikipedia.org/wiki/Brownout_(electricity)

   An unregulated DC supply will produce a lower output voltage. The output voltage ripple will decrease in line with the usually reduced load current. In a cathode-ray tube television, the reduced output voltage will make the screen image smaller, dimmer and fuzzier.

7. Tesla Powershare - Wikipedia

   en.wikipedia.org/wiki/Tesla_Powershare

   Tesla Powershare is a "bi-directional charging" technology with the ability to supply power to a load from a Tesla vehicle. Potential loads include electrical tools and appliances, another Tesla or non-Tesla vehicle, and/or a home/building.