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Best Buy customers often prefer the following products when searching for big batterys.

A battery backup system is a device that provides emergency power to your home's electrical system in the event of a power outage. When the power goes out, the backup system takes over and ensures that you still have light, heat, and other essential services. Browse the top-ranked list of big batterys below along with associated reviews and opinions.

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  1. CyberPower - 1500VA Sine Wave Battery Back-Up System - Black - Front_Zoom
    Top comment

    "Battery Run time is longer than I expected....I am a long time CyberPower battery backup customer. The batteries seem to last only 2-3 years. ...battery backup...good price and quality, was looking for dependabilty and not too big"

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    Product Description

    Protect high-end devices with this CyberPower UPS battery backup. The multifunction LCD screen provides immediate charge status of the battery and power conditions to keep you informed, while the automatic voltage regulation maintains a safe voltage level to conserve battery life. This CyberPower UPS battery backup has data line protection that helps prevent damage to electronics. The GX1500U features an advanced multifunction control panel with a color LCD to quickly confirm status and alerts at-a-glance. The screen tilts for easy viewing when the UPS is placed in a low position such as under a desk. Two USB charge ports (one Type-A and one Type-C) power portable devices such as mobile phones and tablets, even during a utility power failure. The GX1500U uses Automatic Voltage Regulation (AVR) to correct minor power fluctuations without switching to battery power, which extends battery life. AVR is essential in areas where power fluctuations occur frequently.
    See all Battery Backup (UPS)
    Top comment

    "Battery Run time is longer than I expected....I am a long time CyberPower battery backup customer. The batteries seem to last only 2-3 years. ...battery backup...good price and quality, was looking for dependabilty and not too big"

    See all customer reviews

    Product Description

    Protect high-end devices with this CyberPower UPS battery backup. The multifunction LCD screen provides immediate charge status of the battery and power conditions to keep you informed, while the automatic voltage regulation maintains a safe voltage level to conserve battery life. This CyberPower UPS battery backup has data line protection that helps prevent damage to electronics. The GX1500U features an advanced multifunction control panel with a color LCD to quickly confirm status and alerts at-a-glance. The screen tilts for easy viewing when the UPS is placed in a low position such as under a desk. Two USB charge ports (one Type-A and one Type-C) power portable devices such as mobile phones and tablets, even during a utility power failure. The GX1500U uses Automatic Voltage Regulation (AVR) to correct minor power fluctuations without switching to battery power, which extends battery life. AVR is essential in areas where power fluctuations occur frequently.
    See all Battery Backup (UPS)
    See all Battery Backup (UPS)
  2. CyberPower - 1000VA Battery Back-Up System - Black - Front_Zoom
    Top comment

    "great battery back up...Good battery backup and not to big and lots of space for adding devices....Great backup battery...Good choices of backup batteries and this one was a good match for my needs and cost. "

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    Product Description

    This CyberPower LE1000DG 1000VA battery back-up system features Line Interactive topology that regulates high and low voltage without using battery power. Twelve outlets safeguard equipment, with 1030 joules of protection.
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    Top comment

    "great battery back up...Good battery backup and not to big and lots of space for adding devices....Great backup battery...Good choices of backup batteries and this one was a good match for my needs and cost. "

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    Product Description

    This CyberPower LE1000DG 1000VA battery back-up system features Line Interactive topology that regulates high and low voltage without using battery power. Twelve outlets safeguard equipment, with 1030 joules of protection.
    See all Battery Backup (UPS)
    See all Battery Backup (UPS)
  3. CyberPower - 450VA Battery Back-Up System - Black - Front_Zoom
    Top comment

    "Great battery...I have many of these batteries with surge protector very reliable...Good Backup Batteries...Use several of the battery backup batteries for my computer, routers and wifi devices."

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    Product Description

    Protect your desktop computer and other electronics with this CyberPower UPS standby system. Composite integrated circuitry defends against lightning while the system works to safeguard against power surges, brownouts or outages that can jeopardize delicate wiring. The 12-volt battery backup on this CyberPower UPS standby system has eight standard outlets to handle multiple devices, ensuring extra protection for electronics for up to 90 seconds at full load.
    See all Battery Backup (UPS)
    Top comment

    "Great battery...I have many of these batteries with surge protector very reliable...Good Backup Batteries...Use several of the battery backup batteries for my computer, routers and wifi devices."

    See all customer reviews

    Product Description

    Protect your desktop computer and other electronics with this CyberPower UPS standby system. Composite integrated circuitry defends against lightning while the system works to safeguard against power surges, brownouts or outages that can jeopardize delicate wiring. The 12-volt battery backup on this CyberPower UPS standby system has eight standard outlets to handle multiple devices, ensuring extra protection for electronics for up to 90 seconds at full load.
    See all Battery Backup (UPS)
    See all Battery Backup (UPS)
  4. CyberPower - 650VA Battery Back-Up System - Black - Front_Zoom
    Top comment

    "battery backup...I always like having backup batteries on my electronics...Big battery backup...great price...It has all the functionality of a big battery backup in a 650 version. It has every plug option I needed for a monitor, desktop computer, printer, and light. "

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    Product Description

    Protect the delicate components of your computer setup with this CyberPower Systems standby UPS system. This uninterruptible power supply adds a layer of defense against surges, spikes and sags, keeping circuits from overloading and electronics from burning out. Offering eight standard outlets and battery backup, this CyberPower Systems standby UPS system provides space for connecting your PC, printer, scanners and other devices to a reliable power supply.
    See all Battery Backup (UPS)
    Top comment

    "battery backup...I always like having backup batteries on my electronics...Big battery backup...great price...It has all the functionality of a big battery backup in a 650 version. It has every plug option I needed for a monitor, desktop computer, printer, and light. "

    See all customer reviews

    Product Description

    Protect the delicate components of your computer setup with this CyberPower Systems standby UPS system. This uninterruptible power supply adds a layer of defense against surges, spikes and sags, keeping circuits from overloading and electronics from burning out. Offering eight standard outlets and battery backup, this CyberPower Systems standby UPS system provides space for connecting your PC, printer, scanners and other devices to a reliable power supply.
    See all Battery Backup (UPS)
    See all Battery Backup (UPS)
  5. CyberPower - 950VA Battery Back-Up System - Black - Front_Zoom
    Top comment

    "Good system for battery backups. Rotated outlets so that more big plugs will fit. ...Lots of outlets with battery backup. Big surge protection."

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    Product Description

    Protect your PC and other electronic devices from power abnormalities with this CyberPower UPS. It features 12 standard outlets and two USB charging ports to provide full-time surge protection for a variety of equipment. This CyberPower UPS has an output of 950 VA/510 W so it can handle powerful devices for up to two minutes at full load.
    See all Battery Backup (UPS)
    Top comment

    "Good system for battery backups. Rotated outlets so that more big plugs will fit. ...Lots of outlets with battery backup. Big surge protection."

    See all customer reviews

    Product Description

    Protect your PC and other electronic devices from power abnormalities with this CyberPower UPS. It features 12 standard outlets and two USB charging ports to provide full-time surge protection for a variety of equipment. This CyberPower UPS has an output of 950 VA/510 W so it can handle powerful devices for up to two minutes at full load.
    See all Battery Backup (UPS)
    See all Battery Backup (UPS)
  6. CyberPower - 750VA Battery Back-Up System - Black - Front_Zoom
    Top comment

    "Ok battery backup...Too big and doesn't provide great service. Smaller sizes seems to work better....Best back up battery very reliable. Not so big so you can put it anywhere."

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    Product Description

    Protect electronics against power surges and prevent data loss with this slim profile 375W CyberPower UPS. The two USB Type-A ports charge portable devices rapidly, while the compact charger lowers power consumption. Eight sizable outlets support transformer-based plugs for uninterrupted access. This ENERGY STAR-qualified CyberPower UPS includes free software for simple monitoring and control, and keyhole slots support wall mounting to conserve space.
    See all Battery Backup (UPS)
    Top comment

    "Ok battery backup...Too big and doesn't provide great service. Smaller sizes seems to work better....Best back up battery very reliable. Not so big so you can put it anywhere."

    See all customer reviews

    Product Description

    Protect electronics against power surges and prevent data loss with this slim profile 375W CyberPower UPS. The two USB Type-A ports charge portable devices rapidly, while the compact charger lowers power consumption. Eight sizable outlets support transformer-based plugs for uninterrupted access. This ENERGY STAR-qualified CyberPower UPS includes free software for simple monitoring and control, and keyhole slots support wall mounting to conserve space.
    See all Battery Backup (UPS)
    See all Battery Backup (UPS)
  7. Apple - iPhone 13 5G 128GB (Unlocked) - Green - Front_Zoom
    Top comment

    "Decent size phone, battery last long and also chargers fast, have had no problems with it whatsoever, gave it a 4 because i miss the home button lol, this was my newest upgrade from a 2020 SE."

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    Product Description

    iPhone 13. The most advanced dual-camera system ever on iPhone. Lightning-fast A15 Bionic chip. A big leap in battery life. Durable design. Superfast 5G.¹ And a brighter Super Retina XDR display.
    See all All iPhone
    Top comment

    "Decent size phone, battery last long and also chargers fast, have had no problems with it whatsoever, gave it a 4 because i miss the home button lol, this was my newest upgrade from a 2020 SE."

    See all customer reviews

    Product Description

    iPhone 13. The most advanced dual-camera system ever on iPhone. Lightning-fast A15 Bionic chip. A big leap in battery life. Durable design. Superfast 5G.¹ And a brighter Super Retina XDR display.
    See all All iPhone
    See all All iPhone
  8. Apple - Pre-Owned iPhone 13 5G 256GB (Unlocked) - Pink - Front_Zoom
    Top comment

    "Phone works perfectly. Great battery life. Excellent camera quality."

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    Product Description

    iPhone 13. Enjoy taking photos with an advanced dual-camera system. Lightning-fast A15 Bionic chip. A big leap in battery life, durable design, superfast 5G and a brighter Super Retina XDR display.
    See all All iPhone
    Top comment

    "Phone works perfectly. Great battery life. Excellent camera quality."

    See all customer reviews

    Product Description

    iPhone 13. Enjoy taking photos with an advanced dual-camera system. Lightning-fast A15 Bionic chip. A big leap in battery life, durable design, superfast 5G and a brighter Super Retina XDR display.
    See all All iPhone
    See all All iPhone
  9. JBL - PartyBox 310 Portable Party Speaker - Black - Front_Zoom

    Model: JBLPARTYBOX310AM
    SKU: 6426700

    Product Description

    Huge sound, dazzling lights and unbelievable power set this speaker apart from the crowd. The JBL PartyBox 310 packs a full party into a transportable, splashproof sound machine like no other. Turn up your favorite playlists anywhere, from get-togethers at home to dance parties on the beach. Bring big party vibes with 240 watts of JBL Pro Sound and a synced light show that grooves to the beat. Plug in and keep the fun going all night or wheel over to the campfire and take advantage of its impressive 18-hour battery life. Start a party with the JBL PartyBox 310.
    See all Bluetooth & Wireless Speakers

    Product Description

    Huge sound, dazzling lights and unbelievable power set this speaker apart from the crowd. The JBL PartyBox 310 packs a full party into a transportable, splashproof sound machine like no other. Turn up your favorite playlists anywhere, from get-togethers at home to dance parties on the beach. Bring big party vibes with 240 watts of JBL Pro Sound and a synced light show that grooves to the beat. Plug in and keep the fun going all night or wheel over to the campfire and take advantage of its impressive 18-hour battery life. Start a party with the JBL PartyBox 310.
    See all Bluetooth & Wireless Speakers
    See all Bluetooth & Wireless Speakers
  10. Apple - iPhone 14 Plus 128GB (Unlocked) - Starlight - Front_Zoom
    Top comment

    "They didn’t want to upgrade to the newest phone as they’re not a fan of the new notch so this phone was perfect for them it’s super responsive has a great big display, long lasting battery and the camera quality is amazing and overall it’s just a great device....Excelent phone big, fast, beatifuld, smart, and the best brand apple"

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    Product Description

    iPhone 14 Plus. Think big with a larger 6.7-inch display¹ and all-day battery life.² Capture stunning photos in low light and bright light with the new dual-camera system. Get peace of mind with groundbreaking safety features.
    See all All iPhone
    Top comment

    "They didn’t want to upgrade to the newest phone as they’re not a fan of the new notch so this phone was perfect for them it’s super responsive has a great big display, long lasting battery and the camera quality is amazing and overall it’s just a great device....Excelent phone big, fast, beatifuld, smart, and the best brand apple"

    See all customer reviews

    Product Description

    iPhone 14 Plus. Think big with a larger 6.7-inch display¹ and all-day battery life.² Capture stunning photos in low light and bright light with the new dual-camera system. Get peace of mind with groundbreaking safety features.
    See all All iPhone
    See all All iPhone
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