Best uninterruptible power supplies – Top 8 of 2021

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We read all of the reviews, and put together a list of the most popular sellers. Check out the top uninterruptible power supplies below.


SaleNo. 1
APC UPS, 600VA UPS Battery Backup & Surge Protector, BE600M1 Backup Battery Power Supply, USB Charger, Back-UPS Series...
5,089 Reviews
APC UPS, 600VA UPS Battery Backup & Surge Protector, BE600M1 Backup Battery Power Supply, USB Charger, Back-UPS Series...
  • 600VA / 330W Backup Battery power supply
  • 7 Outlets (NEMA 5-15R): 5 UPS Battery Backup with Surge Protection Outlets, and 2 Surge Protector Only Outlets
  • 1 USB Charger Port (1.5A) for cell phones and other portable electronics
  • 5' Power Cord, right-angle 3-prong wall plug (NEMA 5-15P), wall-mountable, plus free Windows PC power-management software (Mac OS uses...
  • Replacable Battery: The battery can be replaced when needed with RBC model APCRBC154 (sold separately)
SaleNo. 2
CyberPower CP1500PFCLCD PFC Sinewave UPS System, 1500VA/1000W, 12 Outlets, AVR, Mini Tower, Black
  • 1500VA/1000W PFC Sine Wave Battery Backup Uninterruptible Power Supply (UPS) System - Designed to support active PFC and conventional power...
  • 12 NEMA 5-15R outlets: (6) battery backup & surge protected outlets, 6 surge protected outlets safeguard servers, workstations, network...
  • Multifunction LCD panel with color display: Displays immediate, detailed information on the UPS battery and power conditions. The color...
  • Automatic Voltage Regulation (AVR): Corrects minor power fluctuations without switching to battery power, thereby extending the life of the...
  • 3-year warranty including the battery; 500,000 dollars connected equipment guarantee and free PowerPanel personal edition management...
SaleNo. 3
Uninterruptible Power Supplies
  • King, Alexander (Author)
  • English (Publication Language)
  • 272 Pages - 10/23/2002 (Publication Date) - McGraw-Hill Professional (Publisher)
No. 4
APC UPS, 1500VA UPS Battery Backup & Surge Protector, BX1500M Backup Battery, AVR, Dataline Protection and LCD Display,...
693 Reviews
APC UPS, 1500VA UPS Battery Backup & Surge Protector, BX1500M Backup Battery, AVR, Dataline Protection and LCD Display,...
  • 1500VA / 900W Backup Battery power supply
  • 10 Outlets (NEMA 5-15R): 5 UPS Battery Backup with Surge Protection Outlets, and 5 Surge Protector Only Outlets
  • Automatic Voltage Regulation (AVR) instantly corrects low/high voltage fluctuations, and is Active PFC compatible
  • 3-5 Year Battery Life. UPS Replacement Battery for BX1500M sold separately (part # APCRBC124)
  • 1 GB network dataline protection, 6' Power Cord, right-angle 3-prong wall plug (NEMA 5-15P), and free Windows PC power-management software...
No. 5
APC UPS, 425VA UPS Battery Backup Surge Protector, BE425M Backup Battery Power Supply, Back-UPS Series
523 Reviews
APC UPS, 425VA UPS Battery Backup Surge Protector, BE425M Backup Battery Power Supply, Back-UPS Series
  • 425VA / 225W Backup Battery power supply
  • 6 Outlets (NEMA 5-15R): 4 UPS Battery Backup with Surge Protection Outlets, and 2 Surge Protector Only Outlets
  • 5' Power Cord, right-angle 3-prong wall plug (NEMA 5-15P). Wall mountable
  • During a power outage, an APC UPS battery backup power supply provides backup power for essential home electronics. Ideal battery backup for...
  • Backed by APC's 3 year warranty, and $75,000 connected-equipment policy
SaleNo. 6
CyberPower EC850LCD Ecologic Battery Backup & Surge Protector UPS System, 850VA/510W, 12 Outlets, ECO Mode, Compact,...
  • 850VA/510W Ecologic Battery Backup Uninterruptible Power Supply (UPS) System
  • 12 NEMA 5-15R OUTLETS: 6 battery backup & surge protected outlets, 6 surge protected outlets (3 ECO controlled) safeguard desktop computers,...
  • MULTIFUNCTION LCD PANEL: Displays immediate, detailed information on battery and power conditions
  • ECO MODE: When the UPS detects a computer is off or in sleep mode, it will automatically turn off power to computer peripherals connected to...
  • 3-YEAR WARRANTY INCLUDING THE BATTERY; 100,000 dollar Connected Equipment Guarantee and FREE PowerPanel Personal Edition Management Software...
SaleNo. 7
Tripp Lite SMART1500LCDT 1500VA 900W UPS Battery Back Up, AVR, LCD Display, Line-Interactive, 10 Outlets, 120V, USB, Tel...
  • Work though short blackouts & maintain a network connection/ save files safely during longer blackouts: 1500VA / 900W Smart LCD Battery...
  • 10 Outlets protect desktops & all peripherals: 5 Outlets provide UPS Power Backup & Surge Protection (for desktop, monitor, LCD, keyboard,...
  • Avr corrects brownouts & overvoltages without using battery power: Otherwise known as Automatic Voltage Regulation, this conserves battery...
  • Free management software / user replaceable batteries: USB port & free software enable unattended system shutdown and power management....
  • 3-year warranty, $250,000 insurance: 3-year limited warranty and $250,000 ultimate lifetime insurance for connected equipment. Operating...
No. 8
APC UPS, 1500VA Sine Wave UPS Battery Backup & Surge Protector, BR1500MS2, Backup Battery with AVR, (2) USB Charger...
  • 1500VA / 900W Backup Battery power supply
  • Sinewave UPS with Automatic Voltage Regulation (AVR), designed for high-end electronics. Ideal battery backup for computer
  • 10 Total Outlets (NEMA 15-15R): 6 Battery backup outlets, and 4 Surge-protection only outlets
  • (1) USB-C Charging port iphone 12 compatible, and (1) Type-A USB charging port (15W shared))
  • 6' Power Cord with space saving right-angle wall plug (NEMA 15-15P). Plus FREE power-management software for Windows PC (Mac OS uses native...