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  2. Uninterruptible power supply - Wikipedia

    en.wikipedia.org/wiki/Uninterruptible_power_supply

    A large data-center-scale UPS being installed by electricians. An uninterruptible power supply (UPS) or uninterruptible power source is a type of continual power system that provides automated backup electric power to a load when the input power source or mains power fails.

  3. Backup battery - Wikipedia

    en.wikipedia.org/wiki/Backup_battery

    Backup batteries are used in uninterruptible power supplies (UPS), and provide power to the computers they supply for a variable period after a power failure, usually long enough to at least allow the computer to be shut down gracefully. [4] These batteries are often large valve regulated lead-acid batteries in smaller or portable systems.

  4. Category:Uninterruptible power supply - Wikipedia

    en.wikipedia.org/wiki/Category:Uninterruptible...

    Media in category "Uninterruptible power supply" This category contains only the following file. Smartups-2200xlrm3u-inside.jpg 1,067 × 729; 409 KB

  5. January 2025 Richmond water crisis - Wikipedia

    en.wikipedia.org/wiki/January_2025_Richmond...

    The system had battery backup power, called an Uninterruptible Power Supply (UPS), but, concurrently with the manual switch to the power system, that went offline before full power was restored. [26] An RVAMag report said that the IT battery backup system ran out too quickly, [13] after about an hour into the two-hour power loss. [28]

  6. VRLA battery - Wikipedia

    en.wikipedia.org/wiki/VRLA_battery

    A 12V VRLA battery, typically used in small uninterruptible power supplies and emergency lamps. A valve regulated lead–acid (VRLA) battery, commonly known as a sealed lead–acid (SLA) battery, [1] is a type of lead–acid battery characterized by a limited amount of electrolyte ("starved" electrolyte) absorbed in a plate separator or formed into a gel; proportioning of the negative and ...

  7. Power outage - Wikipedia

    en.wikipedia.org/wiki/Power_outage

    Power outages are categorized into three different phenomena, relating to the duration and effect of the outage: A transient fault is a loss of power typically caused by a fault on a power line, e.g. a short circuit or flashover. Power is automatically restored once the fault is cleared. A brownout is a drop in voltage in an electrical power ...

  8. 80 Plus - Wikipedia

    en.wikipedia.org/wiki/80_Plus

    80 Plus (trademarked 80 PLUS) is a voluntary certification program launched in 2004, intended to promote efficient energy use in computer power supply units (PSUs). Certification is acquirable for products that have more than 80% energy efficiency at 20%, 50% and 100% of rated load, and a power factor of 0.9 or greater at 100% load.

  9. Lithium polymer battery - Wikipedia

    en.wikipedia.org/wiki/Lithium_polymer_battery

    The dry SPE was the first used in prototype batteries, around 1978 by Michel Armand, [4] [5] and 1985 by ANVAR and Elf Aquitaine of France, and Hydro-Québec of Canada. [6] Since 1990, several organisations, such as Mead and Valence in the United States and GS Yuasa in Japan, have developed batteries using gelled SPEs. [ 6 ]

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