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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. Ring - Quick Release Rechargeable Lithium-ion Battery for Select Devices

    SKU: J36CLVPSYP

    Works perfectly to have for backups or in addition in the cold weather!...Recommended to have one or two available as backups....Great backup battery...Backup

    Product Description

    A rechargeable black and silver lithium-ion battery pack offering quick-release backup power for select Ring devices.
    See all Home Security Accessories
    Your price for this item is $34.99
  2. Eaton - Internal Replacement Battery Cartridge (RBC) for Select 9SX 2-3kVA, SU2200XLCD and SU3000XLCD UPS Systems - 96 V - Unknown

    SKU: J325G7GZ54

    Product Description

    An internal replacement battery cartridge delivering 96V DC power for select UPS backup systems.
    See all Battery Backup (UPS)
    Your price for this item is $722.96
    Save $36
    The previous price was $759.11
  3. HQRP - Ni-Mh 1/2D 6V 3500mAh Battery for Moltech Power Systems N38AF001A / Intec IMT-3500D / ESR8EE5920 RL1019 RL2019 Battery

    SKU: J3ZSLC67X2

    Product Description

    A high-capacity 6V 3500mAh Ni-MH rechargeable battery pack designed for reliable flashlight and power applications.
    See all All Batteries & Power
    Your price for this item is $30.95
  4. Your price for this item is $90.75
    Save $10
    The previous price was $100.99
  5. Renogy - 12V 50Ah Core Series Deep Cycle Lithium Iron Phosphate Battery

    SKU: J39HF8V2V4

    Product Description

    A rechargeable black lithium iron phosphate battery offering reliable 12V 50Ah deep cycle performance for various applications.
    See all Lithium Batteries
    Your price for this item is $199.99
  6. 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
  7. 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.
    See all Power Cords & Strips
    Your price for this item is $158.18
  8. EcoFlow - DELTA PRO ULTRA 6000Wh Battery

    SKU: J36C7VZRKL

    Product Description

    A rechargeable black LiFePO4 battery backup providing 120 volts for home, emergency, camping, and RV use.
    See all Solar Generators & Power Banks
    Your price for this item is $2,099.00
    Save $600
    The previous price was $2,699.00
  9. EcoFlow - DELTA 3 Extra Battery

    SKU: J36C7V49FS

    Product Description

    A modular silver battery accessory that expands storage and runtime for DELTA 3 series portable power stations.
    See all Solar Generators & Power Banks
    Your price for this item is $389.00
    Save $210
    The previous price was $599.00
  10. Rechargeable Lithium-Ion Replacement Battery for Arlo Ultra and Pro Cameras

    SKU: JJ8QV84T83

    Product Description

    A rechargeable black battery providing reliable backup power for compatible Arlo Ultra and Pro cameras.
    See all All Batteries & Power
    Your price for this item is $49.99

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