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Battery Backup Replacement Batteries

The best backup batteries for your devices are the ones that last the longest and work when you need them. Whether you're looking for a replacement battery for your smoke alarm, security system, or other device, we've got you covered. Browse the top-ranked list of battery backup replacement batteries below along with associated reviews and opinions.

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  1. Rechargeable Lead Acid Replacement Battery Cartridge #124 for Select APC Back-Up Systems

    SKU: JXKZP6V37L

    Product Description

    A rechargeable 12-volt lead acid battery in black and green, compatible with select APC Back-UPS systems.
    See all Surge Protectors & Power
    Your price for this item is $144.08
    Save $0
    The previous price was $144.80

  2. Eaton Tripp Lite Series UPS Replacement Battery Cartridge for SUINT1500LCD2U UPS System, 36V - 36 V DC - 3 Year Minimum - Unknown

    SKU: J78C5ZPLGC

    Product Description

    A reliable 36V DC replacement battery cartridge designed for extended UPS backup and a 3-year minimum lifespan.
    See all Battery Backup (UPS)
    Your price for this item is $380.71
    Save $40
    The previous price was $421.20

  3. APC - Replacement Battery Cartridge for Back-UPS, 12V 7.2Ah lead-acid battery, 2-year repair or replace warranty - Lead - Black

    SKU: JXKZPRCH4F

    Product Description

    A black 12V 7.2Ah lead-acid replacement battery cartridge designed to restore UPS performance.
    See all Battery Backup (UPS)
    Your price for this item is $131.37
    Save $7
    The previous price was $139.13

  4. APC - Replacement Battery Cartridge for Back-UPS, 12V 9.4Ah lead-acid battery, 2-year repair or replace warranty - Lead - Unknown

    SKU: JXKZPRC9Q6

    Product Description

    A 12V 9.4Ah lead-acid replacement battery cartridge designed to restore UPS performance with warranty coverage.
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    Your price for this item is $163.24

  5. APC - REPLACEMENT BATTERY CARTRIDGE NUMBER 135 - Unknown

    SKU: JXKZP6VHKG

    Product Description

    A reliable replacement battery cartridge designed for uninterrupted power supply backup systems.
    See all Battery Backup (UPS)
    Your price for this item is $175.65

  6. APC - Replacement Battery Cartridge #2 - Black

    SKU: JXKZP683XW

    Product Description

    A maintenance-free, hot-swappable lead acid battery cartridge in black for uninterrupted power backup.
    See all Battery Backup (UPS)
    Your price for this item is $73.78
    Save $13
    The previous price was $87.12

  7. APC - Replacement Battery Cartridge for Back-UPS, 12V 6.5Ah lead-acid battery, 2-year repair or replace warranty - Lead - Black

    SKU: JXKZPRCXH7

    Product Description

    A black 12V 6.5Ah lead-acid replacement battery designed to restore reliable performance to compatible UPS units.
    See all Battery Backup (UPS)
    Your price for this item is $89.56
    Save $0
    The previous price was $89.81

  8. APC - Replacement Battery Cartridge #6 - Black

    SKU: JXKZP68388

    Product Description

    A maintenance-free, hot-swappable lead acid battery cartridge in black for uninterrupted power backup.
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    Your price for this item is $264.00
    Save $21
    The previous price was $285.69

  9. Eaton - Pw9130 1500Va Rack Replacement Battery - Unknown

    SKU: JX4K7Z6GP6

    Product Description

    A high-performance replacement battery designed to deliver reliable backup power for UPS systems.
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    Your price for this item is $499.99

  10. Eaton - 5S UPS 700VA 420 Watt 230V Tower UPS Sine Wave Battery Back Up LCD USB - Tower - 2 Minute Stand-by - 220 V AC - Unknown

    SKU: JX4K7ZPKTF

    Product Description

    A sine wave battery backup UPS with LCD display, 700VA capacity, and maintenance-free lead acid battery.
    See all Battery Backup (UPS)
    Your price for this item is $225.15
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FAQ

Battery backup replacement batteries are commonly compatible with uninterruptible power supplies (UPS), home security systems, medical equipment, and select networking devices. Always check your device's specifications to ensure compatibility.

You can typically find the model number on your existing battery or in your device’s user manual. Matching the model number ensures you select the right replacement for optimal performance.

Most replacement batteries are designed for easy installation and do not require special tools. However, some devices may need a screwdriver or similar basic tool to access the battery compartment.

Yes, most battery backup batteries are recyclable. Many local recycling centers and electronics retailers offer battery recycling services to help you dispose of old batteries responsibly.

Replacement frequency depends on usage and battery type, but most battery backup batteries should be replaced every 3–5 years to ensure reliable performance during power outages.