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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

  • APC SU1400X106 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with APC SU1400X106 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • APC SU1400 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with APC SU1400 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • APC SU1400NET 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with APC SU1400NET 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • APC SU1400BX120 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with APC SU1400BX120 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • APC SU1250 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with APC SU1250 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • APC SU1250 RACK 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with APC SU1250 RACK 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • APC SU1000XL 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with APC SU1000XL 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • APC SU1000XL NET 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with APC SU1000XL NET 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • APC SU1000XLI 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with APC SU1000XLI 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Dyna Tech SRF 560-2 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Dyna Tech SRF 560-2 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Dyna Tech SRF 550-2 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Dyna Tech SRF 550-2 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Para Systems S 2000 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Para Systems S 2000 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Para Systems S 1400 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Para Systems S 1400 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Para Systems PX 10-1.4 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Para Systems PX 10-1.4 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Para Systems PRO 1400 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Para Systems PRO 1400 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Deltec PRA1000A 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Deltec PRA1000A 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • ONEAC ONEXBC-217 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with ONEAC ONEXBC-217 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • ONEAC ON1300J-SN 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with ONEAC ON1300J-SN 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • ONEAC ON1300AU-SN 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with ONEAC ON1300AU-SN 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Para Systems MSU 1400 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Para Systems MSU 1400 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Para Systems MSU 1400i 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Para Systems MSU 1400i 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Belkin F6C129XBAT 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Belkin F6C129XBAT 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • APC CURK7 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with APC CURK7 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29
  • Hewlett Packard Compaq242689 12V 18Ah UPS Replacement Battery
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

    AJC Battery Compatible with Hewlett Packard Compaq242689 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...

    View full details
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29 - $59.49
    $53.29

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.