Skip to contentGo to Product Search
Main Content
Best Buy

/

computer accessories & peripherals

/

surge protectors & power

/

battery backup (ups)

Online Double Conversion UPS Systems

Find online double conversion UPS systems to provide battery backup and conditioned power for critical electronics. These uninterruptible power supplies continuously convert incoming AC power to DC and back to AC, helping protect connected equipment from power disturbances. Compare power capacity, battery runtime, outlet configuration, and form factor to find a system that fits your equipment and installation needs.

Read More
Results
Main Results

  1. CyberPower - LX1500GU3 Battery Backup UPS Systems - Black

    SKU: JX8P9XGWKV

    Great product at a great price. Definitely the best buy at the best store....Best battery backup!...Best battery backup I have ever purchased!...The features of this hardware is a gold standard and I...

    Product Description

    A black mini-tower UPS offering battery backup, surge protection, AVR, and USB charging for essential devices.
    See all Battery Backup (UPS)
    Your price for this item is $209.99

  2. CyberPower - PR1500LCD Smart App Sinewave UPS Systems - Black

    SKU: JX8P92SR76

    The CyberPower PR1500LCD UPS is easily one of the best UPS units I’ve used.

    Product Description

    A pure sine wave UPS in black with 1500VA/1500W capacity, 8 outlets, and advanced connectivity options.
    See all Battery Backup (UPS)
    Your price for this item is $700.95

  3. CyberPower - CP1000PFCLCD PFC Sinewave UPS Systems - Black

    SKU: JX8P9297P2

    Product Description

    A black sine wave UPS with 1000VA/600W capacity, 10 outlets, USB ports, and PowerPanel software.
    See all Battery Backup (UPS)
    Your price for this item is $179.95

  4. Tripp Lite - SMART1500LCDT SmartPro 650 Joules 1,500 VA 10 Outlets LCD Line-Interactive UPS AVR Tower - Black

    SKU: J78C5ZY2RY

    Tripplite UPS was very easy to install, and love all the 10 outlets and the front digital screen that's...Great product....Great Product...I absolutely love this and highly recommend it to everyone.

    Product Description

    A black line-interactive UPS with LCD display provides surge protection and automatic voltage regulation for electronics.
    See all Battery Backup (UPS)
    Your price for this item is $371.62

  5. CyberPower - CP1500PFCRM2U PFC Sinewave UPS Systems - Black

    SKU: JX8P9XGZY4

    Works great for network and Nas safe shutdowns....Works great

    Product Description

    A black rackmount UPS with 1500VA/1000W PFC sine wave, 8 outlets, USB, and SNMP support.
    See all Battery Backup (UPS)
    Your price for this item is $359.95
    Save $29
    The previous price was $389.49

  6. Eaton Tripp Lite Series SmartOnline 1000VA 900W 120V Double-Conversion Sine Wave UPS - 8 Outlets, Extended Run, Network - Unknown

    SKU: J78C5ZL9ZS

    Product Description

    A double-conversion sine wave UPS with eight outlets, extended runtime, and advanced network management features.
    See all Battery Backup (UPS)
    Your price for this item is $1,124.02

  7. Eaton Tripp Lite Series 1.5kVA 900W Line-Interactive UPS with 8 C13 Outlets - AVR, 230V, C14 Inlet, LCD, USB, Tower - Unknown

    SKU: J78C5Z9XZF

    Product Description

    A line-interactive UPS with 8 C13 outlets, AVR, LCD display, USB connectivity, and 230V support.
    See all Battery Backup (UPS)
    Your price for this item is $264.85

  8. Eaton - 9SX 3000VA 2700W 208V Online Double-Conversion UPS - 8 C13, 1 C19 Outlets, Cybersecure Network Card Option - Unknown

    SKU: JX4K7Z64CR

    Product Description

    A double-conversion UPS with eight C13 and one C19 outlets delivers reliable, cybersecure power protection.
    See all Battery Backup (UPS)
    Your price for this item is $4,182.78

  9. Vertiv - Liebert GXT5 UPS - 6kVA/6kW/208 and 120V | Online Rack Tower Energy Star - Double Conversion| 4U| Built-in RDU101 - Black

    SKU: J37HZ77T89

    Product Description

    A black ENERGY STAR certified UPS providing 6kVA double conversion backup with remote monitoring and LCD display.
    See all Battery Backup (UPS)
    Your price for this item is $6,965.69

  10. Vertiv - Liebert GXT5 UPS - 750VA/750W 120V | Online Rack Tower Energy Star - Double Conversion| 2U| Optional RDU101 Card - Black

    SKU: J37HZ77T7C

    Product Description

    A black double-conversion UPS offering 750VA/750W power protection with hot-swappable batteries and ENERGY STAR certification.
    See all Battery Backup (UPS)
    Your price for this item is $999.00

  11. Vertiv - Liebert GXT5 UPS - 5kVA/5kW/208 and 120V | Online Rack Tower Energy Star - Double Conversion| 4U| Built-in RDU101 - Black

    SKU: J37HZ77T83

    Product Description

    A black ENERGY STAR certified UPS providing 5kVA double conversion backup with remote monitoring and LCD display.
    See all Battery Backup (UPS)
    Your price for this item is $6,683.54
    Save $334
    The previous price was $7,017.72

  12. Emerson Network Power - Vertiv Liebert PSI5 Lithium-Ion Short-Depth 3kVA 2700W 120V 3U Rack/Tower UPS PSI53000SRT120LI - Black

    SKU: J37HZ7JYF6

    Product Description

    A lithium-ion UPS with 3000VA capacity, short-depth 3U rack/tower design, and remote monitoring capability.
    See all Battery Backup (UPS)
    Your price for this item is $3,756.47
    Save $187
    The previous price was $3,944.29

  13. Vertiv - Liebert GXT5 TAA UPS with RDU101 Card - 2000VA/1800W 120V Rack/Tower - 2U | Double Conversion | 0.9 Output Power - Black

    SKU: J37HZ7J9FK

    Product Description

    A black double-conversion UPS with 2000VA/1800W capacity, hot-swappable batteries, and remote management card.
    See all Battery Backup (UPS)
    Your price for this item is $3,446.23

  14. Vertiv - Liebert GXT5 UPS - 3000VA/2700W 120V | Online Rack Tower Energy Star - Double Conversion| 2U| Optional RDU101 - Black

    SKU: J37HZ77T37

    Product Description

    A black, ENERGY STAR certified UPS with 3000VA/2700W capacity and double conversion online protection.
    See all Battery Backup (UPS)
    Your price for this item is $3,649.00

  15. Vertiv - Liebert GXT5 UPS - 2000VA/1800W 120V | Online Rack Tower Energy Star - Double Conversion| 2U| Optional RDU101 - Black

    SKU: J37HZ77T2K

    Product Description

    A black, ENERGY STAR certified UPS with 2000VA/1800W capacity and double conversion online protection.
    See all Battery Backup (UPS)
    Your price for this item is $2,422.99

  16. Vertiv - Liebert GXT5 UPS - 3000VA/3000W 230V | Online Rack Tower Energy Star - Double Conversion| 2U| Optional RDU101 - Black

    SKU: J37HZ77T63

    Product Description

    A black 2U online double-conversion UPS delivering 3000VA/3000W power protection with hot-swappable batteries.
    See all Battery Backup (UPS)
    Your price for this item is $4,453.13
    Save $13
    The previous price was $4,467.00

  17. Vertiv - Liebert GXT5 TAA UPS - 2000VA/1800W 120V Online 2U Rack/Tower UPS - Double Conversion | 0.9 Output Power Factor - Black

    SKU: J37HZ7JS4J

    Product Description

    A black double-conversion UPS providing 2000VA/1800W power protection with hot-swappable batteries and rack/tower flexibility.
    See all Battery Backup (UPS)
    Your price for this item is $2,663.11

  18. Vertiv - Liebert GXT5 UPS - 10kVA/10kW/208 and 120V|Online Rack Tower Energy Star - Double Conversion| 6U| Built-in RDU101 - Black

    SKU: J37HZ77TGS

    Product Description

    A black double-conversion UPS providing 10kVA/10kW power, ENERGY STAR certified with remote monitoring capabilities.
    See all Battery Backup (UPS)
    Your price for this item is $12,477.94
    Save $623
    The previous price was $13,101.84

  19. Vertiv - Liebert GXT5 UPS - 1000VA/1000W 120V | Online Rack Tower Energy Star - Double Conversion| 2U| Optional RDU101 - Black

    SKU: J37HZ77TJL

    Product Description

    A black, ENERGY STAR certified UPS with double conversion technology for reliable power protection and efficiency.
    See all Battery Backup (UPS)
    Your price for this item is $1,333.08
    Save $66
    The previous price was $1,399.73

  20. Vertiv - Liebert GXT5 TAA UPS with RDU101 Card - 3000VA/2700W 120V Rack/Tower - 2U | Double Conversion | 0.9 Output Power - Black

    SKU: J37HZ7J9VJ

    Product Description

    A black double-conversion UPS with 3000VA/2700W capacity, hot-swappable batteries, and remote management card.
    See all Battery Backup (UPS)
    Your price for this item is $5,858.61

  21. Vertiv - Liebert GXT5 UPS - 1500VA/1350W 120V | Online Rack Tower Energy Star - Double Conversion| 2U| Optional RDU101 - Black

    SKU: J37HZ77TC6

    Product Description

    A black, ENERGY STAR certified UPS with double conversion technology for reliable, efficient power protection.
    See all Battery Backup (UPS)
    Your price for this item is $1,689.99

  22. Vertiv - Liebert GXT5-5KL630RT3UXLN 4900VA Rack/Tower UPS - Rack/Tower - 230 V AC Input - 200 V AC, 208 V AC, 220 V AC - Black

    SKU: J37HZ7JZ7S

    Product Description

    A black, energy-efficient UPS providing double-conversion power protection and pure sinewave output for critical IT systems.
    See all Battery Backup (UPS)
    Your price for this item is $6,186.65

  23. Vertiv Liebert GXT5 UPS - 10kVA/10kW 208V | Online Rack Tower Energy Star - Double Conversion | 5U | Built-in RDU101 - Black

    SKU: J37HZ77TWC

    Product Description

    A black double-conversion UPS delivering 10kVA/10kW with ENERGY STAR certification and remote monitoring capabilities.
    See all Battery Backup (UPS)
    Your price for this item is $9,891.65
    Save $494
    The previous price was $10,386.23

  24. Vertiv - Liebert GXT5 TAA UPS - 1500VA/1350W 120V Online 2U Rack/Tower UPS - Double Conversion | 0.9 Output Power Factor - Black

    SKU: J37HZ7JSZK

    Product Description

    A black double-conversion UPS providing 1500VA/1350W power with 0.9 output power factor for reliable backup.
    See all Battery Backup (UPS)
    Your price for this item is $2,028.87
1 - 24 of 94 items
94 items
  2. 2
  3. ...
  4. 4
Next

An online double conversion UPS system provides continuous power protection by converting incoming alternating current (AC) to direct current (DC), then converting it back to AC to power connected equipment. Unlike a standby UPS or a line-interactive UPS, an online uninterruptible power supply continuously powers devices through its inverter during normal double-conversion operation, helping isolate sensitive electronics from many utility power disturbances. This design regulates output voltage and frequency while protecting against outages, voltage sags and other power-quality issues. Because the battery supports the inverter if utility power fails, there is no transfer time to battery power while the UPS is operating in double-conversion mode. That uninterrupted transition can be especially valuable for servers, network switches, storage systems and other equipment that needs dependable electricity to stay available. For businesses managing critical IT infrastructure or home users protecting advanced networking equipment, an online double conversion UPS offers battery backup and power conditioning in one system. Choosing an online double conversion UPS starts with checking both its volt-ampere (VA) rating and watt capacity against the total power requirements of your connected devices, with additional capacity for future expansion. Battery runtime is equally important: a UPS battery backup may provide enough time for an orderly shutdown during an extended outage or help keep essential equipment running while a compatible generator starts. Review the manufacturer’s runtime estimates at your expected load, since backup duration varies with power consumption, battery condition and system configuration. Also compare input plug requirements, output receptacles, rackmount versus tower designs and options for extended battery modules. Depending on the model, features such as network management, automated shutdown software, replaceable batteries and maintenance bypass support can make an online UPS system easier to monitor and service. Consider operating efficiency, cooling needs and fan noise as well, particularly if the unit will sit near a desk or in a small office. If a model offers an energy-saving eco mode, check how that setting affects power conditioning and transfer time, since its operation may differ from continuous double conversion. Matching these specifications to your equipment helps you select a UPS power supply that delivers appropriate protection, manageable maintenance and practical backup runtime.

Best Sellers

Related Pages

FAQ

An online double conversion uninterruptible power supply (UPS) converts incoming alternating current (AC) into direct current (DC), then converts that DC back into AC for connected equipment. During normal online operation, the inverter continuously supplies the output power, while a battery connects to the DC side of the system.

An online double conversion UPS continuously supplies connected equipment through its rectifier and inverter during normal online operation. A line-interactive UPS typically supplies utility power through voltage-regulation circuitry and switches to a battery-powered inverter when utility power is interrupted.

Online double conversion UPS systems are commonly used in data centers, server rooms, telecommunications facilities, and commercial IT environments. Typical connected equipment includes servers, network switches, storage systems, and communications equipment.

Depending on the model, monitoring options may include an LCD panel, USB or serial connections, and an optional network management card. Compatible software can display operating status, battery charge, load percentage, and event logs. Network-enabled models may also support browser-based management and Simple Network Management Protocol (SNMP).

Bypass mode routes incoming AC power to connected equipment without passing it through the normal double conversion path. A static bypass uses electronic switching, while a maintenance bypass provides a separate power path during servicing. The available bypass arrangements and operating conditions vary by system.