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  2. Uninterruptible power supply - Wikipedia

    en.wikipedia.org/wiki/Uninterruptible_power_supply

    The run-time for a battery-operated UPS depends on the type and size of batteries and rate of discharge, and the efficiency of the inverter. The total capacity of a lead–acid battery is a function of the rate at which it is discharged, which is described as Peukert's law. Manufacturers supply run-time rating in minutes for packaged UPS systems.

  3. Backup battery - Wikipedia

    en.wikipedia.org/wiki/Backup_battery

    A backup battery provides power to a system when the primary source of power is unavailable. Backup batteries range from small single cells to retain clock time and date in computers, up to large battery room facilities that power uninterruptible power supply systems for large data centers.

  4. Power supply - Wikipedia

    en.wikipedia.org/wiki/Power_supply

    In many computer installations, it is only enough time on batteries to give the operators time to shut down the system in an orderly way. Other UPS schemes may use an internal combustion engine or turbine to supply power during a utility power outage and the amount of battery time is then dependent upon how long it takes the generator to be on ...

  5. ThinkPad X series - Wikipedia

    en.wikipedia.org/wiki/ThinkPad_X_series

    According to Lenovo, the ThinkPad X-series laptops include low power processors, offer long battery life, and several durability features such as a Roll Cage (Magnesium Frame around the Display), magnesium alloy covers, and a spill-resistant keyboard [7] but currently lacks a replaceable battery and upgradable RAM slots. Battery configuration

  6. Battery room - Wikipedia

    en.wikipedia.org/wiki/Battery_room

    A battery room is a room that houses batteries for backup or uninterruptible power systems. The rooms are found in telecommunication central offices , and provide standby power for computing equipment in datacenters .

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  8. USPS, UPS SurePost delivery contract is over. Will this ... - AOL

    www.aol.com/usps-ups-surepost-delivery-contract...

    The US Postal Service's contract with UPS for SurePost deliveries has ended. Here is how things will change. ... a union representing UPS delivery ... SurePost deliveries can be shipped to 48 U.S ...

  9. Battery management system - Wikipedia

    en.wikipedia.org/wiki/Battery_management_system

    A battery management system (BMS) is any electronic system that manages a rechargeable battery (cell or battery pack) by facilitating the safe usage and a long life of the battery in practical scenarios while monitoring and estimating its various states (such as state of health and state of charge), [1] calculating secondary data, reporting that data, controlling its environment ...

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