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BatteryClerk Prime FAST 1-2 day shipping to most of the USA
BatteryClerk Prime FAST 1-2 day shipping to most of the USA

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

  • AJC Battery Brand Replacement for a WKA12-33C 12V 35Ah UPS Replacement Battery
    $101.49 - $101.49
    $101.49
    $101.49 - $101.49
    $101.49

    AJC Battery Brand Replacement for Werker WKA12-33C 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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    $101.49 - $101.49
    $101.49
    $101.49 - $101.49
    $101.49
  • AJC Battery Brand Replacement for a WKA12-80C 12V 75Ah UPS Replacement Battery
    $196.99 - $196.99
    $196.99
    $196.99 - $196.99
    $196.99

    AJC Battery Brand Replacement for Werker WKA12-80C 12V 75Ah 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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    $196.99 - $196.99
    $196.99
    $196.99 - $196.99
    $196.99
  • AJC Battery Brand Replacement for a WKA12-100J 12V 100Ah UPS Replacement Battery
    $218.99 - $218.99
    $218.99
    $218.99 - $218.99
    $218.99

    AJC Battery Brand Replacement for Werker WKA12-100J 12V 100Ah 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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    $218.99 - $218.99
    $218.99
    $218.99 - $218.99
    $218.99
  • Vision CP1245H 12V 5Ah UPS Replacement Battery
    $18.49 - $18.49
    $18.49
    $18.49 - $18.49
    $18.49

    AJC Battery Compatible with Vision CP1245H 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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    $18.49 - $18.49
    $18.49
    $18.49 - $18.49
    $18.49
  • Vision CP12240 12V 26Ah UPS Replacement Battery
    $75.69 - $75.69
    $75.69
    $75.69 - $75.69
    $75.69

    AJC Battery Compatible with Vision CP12240 12V 26Ah 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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    $75.69 - $75.69
    $75.69
    $75.69 - $75.69
    $75.69
  • Vision CP12200 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Vision CP12200 12V 18Ah 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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    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Upsonic 1000 6V 7Ah UPS Replacement Battery
    $11.99 - $11.99
    $11.99
    $11.99 - $11.99
    $11.99

    AJC Battery Compatible with Upsonic 1000 6V 7Ah UPS Battery

    In stock

    Information 6V 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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    $11.99 - $11.99
    $11.99
    $11.99 - $11.99
    $11.99
  • Universal Power Group UB650S 6V 5Ah UPS Replacement Battery
    $9.79 - $9.79
    $9.79
    $9.79 - $9.79
    $9.79

    AJC Battery Compatible with Universal Power Group UB650S 6V 5Ah UPS Battery

    In stock

    Information 6V 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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    $9.79 - $9.79
    $9.79
    $9.79 - $9.79
    $9.79
  • Universal Power Group UB1245 12V 4.5Ah UPS Replacement Battery
    $17.39 - $18.49
    $17.39 - $18.49
    $17.39 - $18.49
    $17.39

    AJC Battery Compatible with Universal Power Group UB1245 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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    $17.39 - $18.49
    $17.39 - $18.49
    $17.39 - $18.49
    $17.39
  • Universal Power Group UB12180 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Universal Power Group UB12180 12V 18Ah 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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    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Unisys PW9120 1000 12V 7Ah UPS Replacement Battery
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39

    AJC Battery Compatible with Unisys PW9120 1000 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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    $19.39 - $27.49
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39
  • Unison 600 12V 5Ah UPS Replacement Battery
    $18.49 - $18.49
    $18.49
    $18.49 - $18.49
    $18.49

    AJC Battery Compatible with Unison 600 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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    $18.49 - $18.49
    $18.49
    $18.49 - $18.49
    $18.49
  • Union MX-06120 6V 12Ah UPS Replacement Battery
    $19.99 - $19.99
    $19.99
    $19.99 - $19.99
    $19.99

    AJC Battery Compatible with Union MX-06120 6V 12Ah UPS Battery

    In stock

    Information 6V 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
  • Ultra Xfinity 700VA 350W 12V 3.2Ah UPS Replacement Battery
    $12.19 - $12.19
    $12.19
    $12.19 - $12.19
    $12.19

    AJC Battery Compatible with Ultra Xfinity 700VA 350W 12V 3.2Ah 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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    $12.19 - $12.19
    $12.19
    $12.19 - $12.19
    $12.19
  • Ultra Xfinity 500VA 250W 12V 3.2Ah UPS Replacement Battery
    $12.19 - $12.19
    $12.19
    $12.19 - $12.19
    $12.19

    AJC Battery Compatible with Ultra Xfinity 500VA 250W 12V 3.2Ah 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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    $12.19 - $12.19
    $12.19
    $12.19 - $12.19
    $12.19
  • Ultra 850 VA 425 WATTS Backup UPS 12V 7Ah UPS Replacement Battery
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39

    AJC Battery Compatible with Ultra 850 VA 425 WATTS Backup UPS 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...

    View full details
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39
  • Ultra 2000VA 1200W UPS 12V 9Ah UPS Replacement Battery
    $27.49 - $27.49
    $27.49
    $27.49 - $27.49
    $27.49

    AJC Battery Compatible with Ultra 2000VA 1200W UPS 12V 9Ah 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
    $27.49 - $27.49
    $27.49
    $27.49 - $27.49
    $27.49
  • Ultra 300 VA 150 WATTS Backup UPS 6V 4.5Ah UPS Replacement Battery
    $8.39 - $9.79
    $8.39 - $9.79
    $8.39 - $9.79
    $8.39

    AJC Battery Compatible with Ultra 300 VA 150 WATTS Backup UPS 6V 4.5Ah UPS Battery

    In stock

    Information 6V SLA AGM | Premier OEM Replacement Battery by AJC® Maintenance-Free AGM Technology: No need to add acid or water, ever. Guaranteed ...

    View full details
    $8.39 - $9.79
    $8.39 - $9.79
    $8.39 - $9.79
    $8.39
  • Ultra 1000VA 600W UPS 12V 7Ah UPS Replacement Battery
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39

    AJC Battery Compatible with Ultra 1000VA 600W UPS 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...

    View full details
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39
  • Ultra 1000 VA 600 WATTS Backup UPS w/ AVR 12V 7Ah UPS Replacement Battery
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39

    AJC Battery Compatible with Ultra 1000 VA 600 WATTS Backup UPS w AVR 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...

    View full details
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39
  • Tripp Lite SMART1500LCD 12V 8Ah UPS Replacement Battery
    $23.69 - $23.69
    $23.69
    $23.69 - $23.69
    $23.69

    AJC Battery Compatible with Tripp Lite SMART1500LCD 12V 8Ah 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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    $23.69 - $23.69
    $23.69
    $23.69 - $23.69
    $23.69
  • Tripp Lite SMART1500RM2U 12V 9Ah UPS Replacement Battery
    $27.49 - $27.49
    $27.49
    $27.49 - $27.49
    $27.49

    AJC Battery Compatible with Tripp Lite SMART1500RM2U 12V 9Ah 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
    $27.49 - $27.49
    $27.49
    $27.49 - $27.49
    $27.49
  • Tripp Lite SU750XL 12V 7Ah UPS Replacement Battery
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39

    AJC Battery Compatible with Tripp Lite SU750XL 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...

    View full details
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39 - $27.49
    $19.39
  • Tripp Lite SU6000RT4UHVPM 12V 5Ah UPS Replacement Battery
    $18.49 - $18.49
    $18.49
    $18.49 - $18.49
    $18.49

    AJC Battery Compatible with Tripp Lite SU6000RT4UHVPM 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...

    View full details
    $18.49 - $18.49
    $18.49
    $18.49 - $18.49
    $18.49

Keep your data safe during emergencies and downtime with a UPS device. Just as important, keep your UPS device running with a reliable replacement or backup battery. BatteryClerk offers a wide range of affordable and reliable UPS replacement batteries for many top brands.

UPS Battery Replacement

UPS Battery Replacement

View our guide for installing UPS replacement batteries to ensure you get the most out of your new AJC brand battery.