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2. Uninterruptible power supply - Wikipedia

   en.wikipedia.org/wiki/Uninterruptible_power_supply

   A UPS designed for powering DC equipment is very similar to an online UPS, except that it does not need an output inverter. Also, if the UPS's battery voltage is matched with the voltage the device needs, the device's power supply will not be needed either. Since one or more power conversion steps are eliminated, this increases efficiency and ...

3. Backup battery - Wikipedia

   en.wikipedia.org/wiki/Backup_battery

   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. Small backup batteries may be primary cells ; rechargeable backup batteries are kept charged by the prime power supply.

4. APC Smart-UPS - Wikipedia

   en.wikipedia.org/wiki/APC_Smart-UPS

   The Smart-UPS is a series of enterprise-level uninterruptible power supplies (UPS) made by American Power Conversion (APC). [1] Most of the units have a SmartSlot (with the exception of SC and SMC series) which accepts an optional interface card providing features ranging from network connectivity to temperature and humidity monitoring. [ 2 ]

5. I tried this battery-powered backup generator — it's great ...

   www.aol.com/lifestyle/tried-battery-powered...

   Any appliance that requires up to 2,000 watts is fair game to plug in. A standard refrigerator, for example, uses anywhere from 300-800 watts. A space heater typically consumes up to 1,500 watts.

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 .

7. Lead–acid battery - Wikipedia

   en.wikipedia.org/wiki/Lead–acid_battery

   They are used in back-up power supplies for alarm and smaller computer systems (particularly in uninterruptible power supplies) and for electric scooters, electric wheelchairs, electrified bicycles, marine applications, battery electric vehicles or micro hybrid vehicles, and motorcycles.