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BatteryClerk Prime FAST 1-2 day shipping to most of Canada
BatteryClerk Prime FAST 1-2 day shipping to most of Canada

UPS Batteries

Power outages shouldn’t mean downtime for your business. At BatteryClerk, we provide a wide range of high-quality replacement batteries for UPS systems, designed to keep your critical equipment running seamlessly during unexpected power disruptions. Our inventory features top brands, and our team of experts is here to help you find the perfect battery for your specific UPS model. With unbeatable prices and fast, reliable shipping, BatteryClerk ensures your business stays protected and operational. Don’t let power interruptions slow you down—shop now and keep your operations running smoothly!

  • Best Power BAT-0370 12V 7Ah UPS Replacement Battery
    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99

    AJC Battery Compatible with Best Power BAT-0370 12V 7Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

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    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99
  • Best Power PW5125 3000i RM 12V 5Ah UPS Replacement Battery
    $19.99 - $19.99
    $19.99
    $19.99 - $19.99
    $19.99

    AJC Battery Compatible with Best Power PW5125 3000i RM 12V 5Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

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    $19.99 - $19.99
    $19.99
    $19.99 - $19.99
    $19.99
  • Best Power PatriotL1460VAB 12V 4.5Ah UPS Replacement Battery
    $18.59 - $19.99
    $18.59 - $19.99
    $18.59 - $19.99
    $18.59

    AJC Battery Compatible with Best Power PatriotL1460VAB 12V 4.5Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

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    $18.59 - $19.99
    $18.59 - $19.99
    $18.59 - $19.99
    $18.59
  • Best Power FE 10KVA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power FE 10KVA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

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    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power FERRUPS FD 4.3KVA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power FERRUPS FD 4.3KVA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

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    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power FERRUPS FE 3.1KVA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power FERRUPS FE 3.1KVA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

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    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power Fortress LI 2.5KVA BAT-0065 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power Fortress LI 2.5KVA BAT-0065 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

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    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power FERRUPS FE-850 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power FERRUPS FE-850 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power FERRUPS FD 10KVA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power FERRUPS FD 10KVA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power FE 4.3KVA BAT-0065 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power FE 4.3KVA BAT-0065 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power Fortress LI1.7KVA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power Fortress LI1.7KVA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power Ferrups FE850VA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power Ferrups FE850VA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power Ferrups FE700VA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power Ferrups FE700VA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power FER-3.1K 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power FER-3.1K 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power 1.7KVA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power 1.7KVA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power ME3.1KVA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power ME3.1KVA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power Ferr ME3.1KVA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power Ferr ME3.1KVA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power Ferr FE10KVA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power Ferr FE10KVA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power Fortress LI2.0KVA LI 2.0KVA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power Fortress LI2.0KVA LI 2.0KVA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power Ferrups MX1KVA MX 1KVA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power Ferrups MX1KVA MX 1KVA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power Ferrups FE850VA FE 850VA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power Ferrups FE850VA FE 850VA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power Ferrups FE700VA FE 700VA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power Ferrups FE700VA FE 700VA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power Ferrups FE500VA FE 500VA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power Ferrups FE500VA FE 500VA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Power Ferrups FE3.1KVA FE 3.1KVA 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Power Ferrups FE3.1KVA FE 3.1KVA 12V 35Ah UPS Battery

    In stock

    Information 12V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29