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Everything for Back to School — and then someShop now

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computer accessories & peripherals

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surge protectors & power

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battery backup (ups)

Big Ups

If you're looking for a large uninterruptible power supply (UPS) to protect your devices from power outages, here are some options. The best ones are easy to use, reliable, and durable. Browse the top-ranked list of large UPS battery backups below along with associated reviews and opinions. 

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  1. CyberPower - Smart App Sinewave PR3000RT2UC 3000VA Rack/Tower UPS - Black

    SKU: JX8P9XG44X

    Product Description

    A black UPS with 3000VA capacity, AVR, battery equalization, and LCD panel for reliable power backup.
    See all Battery Backup (UPS)
    Your price for this item is $1,843.95

  2. Vertiv - Liebert PSI5 UPS - 3000VA Line Interactive, Rack/Tower, with NIC - 2U Tower/Rack Convertible - AVR - 4 Hour - Unknown

    SKU: J37HZ7748X

    Product Description

    A reliable black UPS with AVR and NIC, providing battery backup and protection for critical electronics.
    See all Battery Backup (UPS)
    Your price for this item is $2,334.99
    Save $38
    The previous price was $2,372.99

  3. Eaton - 5PX G2 3000VA 3000W 2U 208V Line-Interactive UPS 5PX3000HRTNG2 - Black

    SKU: JX4K7ZRKX6

    Product Description

    A line-interactive UPS in black and silver with 3kVA/3kW capacity, managed outlets, and cybersecure network card.
    See all Battery Backup (UPS)
    Your price for this item is $3,969.99

  4. APC - UPS 3000VA Smart-UPS Single Phase Online Uninterruptible Power Supply, Rack Mount UPS (SRT3000RMXLA) - Black

    SKU: JXKZPRJH5W

    This is likely the BEST APC UPS that you can buy, provided you have a 30A, 120V (that you use to connect...The Best 120V UPS Available?

    Product Description

    A black rack-mount online UPS delivering 3000VA backup power with Energy Star certification for reliable protection.
    See all Battery Backup (UPS)
    Your price for this item is $5,016.31

  5. Vertiv - PowerUPS 200 Essential PSA6E-1000LVT, 1000VA/550W, AVR, User-Replaceable Batteries, Battery Backup, 6 NEMA - Unknown

    SKU: J37HZ7J4Z8

    Product Description

    An intuitive UPS with 6 NEMA outlets, AVR, user-replaceable batteries, and USB-A/USB-C charging ports.
    See all Battery Backup (UPS)
    Your price for this item is $185.33

  6. Vertiv - PowerUPS 200 Essential PSA6E-1500LVT, 1500VA/850W, AVR, User-Replaceable Batteries, Battery Backup, 8 NEMA - Unknown

    SKU: J37HZ7J4ZF

    Product Description

    An intuitive UPS battery backup with 8 NEMA outlets, AVR, user-replaceable batteries, and USB charging ports.
    See all Battery Backup (UPS)
    Your price for this item is $206.94

  7. Vertiv - PowerUPS 200 Essential PSA6E-800LVT, 800VA/450W, AVR, User-Replaceable Batteries, Battery Backup, 4 NEMA Outlets - Unknown

    SKU: J37HZ7J4KV

    Product Description

    An intuitive UPS with AVR, user-replaceable batteries, four NEMA outlets, and USB-A/USB-C charging ports.
    See all Battery Backup (UPS)
    Your price for this item is $159.67

  8. Eaton - 5PX G2 3000VA 3000W 120V Line-Interactive UPS - 6 NEMA 5-20R, 1 L5-30R Outlets, Cybersecure Network Card Included - Black

    SKU: JX4K7ZRK24

    Product Description

    A black line-interactive UPS with 3000VA/3000W capacity, cybersecure network card, and seven managed outlets.
    See all Battery Backup (UPS)
    Your price for this item is $2,773.90
    Save $138
    The previous price was $2,912.60

  9. Vertiv - PowerUPS 200 Standard Line Interactive PSA6-1500LVT, 1500VA/935W, AVR, USB Charging, Color LCD, User-Replaceable - Unknown

    SKU: J37HZ7J45P

    Product Description

    A compact UPS with AVR, color LCD, USB charging, user-replaceable batteries, and dataline surge protection.
    See all Battery Backup (UPS)
    Your price for this item is $227.59
    Save $31
    The previous price was $259.05
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FAQ

A UPS, or uninterruptible power supply, is a device that provides backup power to your electronics in case of a power outage. It works by using an internal battery to supply electricity when the main power source fails, helping prevent data loss and equipment damage.

You can connect computers, networking equipment, servers, gaming consoles, home theater systems, and other sensitive electronics to a UPS. It's important to check the total wattage supported by the UPS to ensure it can handle all connected devices.

To maintain your UPS, keep it in a cool, dry place with adequate ventilation. Periodically test the unit by unplugging it from the wall to ensure it switches to battery power. Replace the internal battery as recommended by the manufacturer.

Yes, most UPS units include built-in surge protection that helps shield your connected devices from voltage spikes and electrical surges in addition to providing backup power during outages.

Most UPS units have indicator lights or alarms that alert you when the battery needs replacement. You may also notice reduced backup time or failure to provide power during outages as signs that the battery is nearing the end of its lifespan.