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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!

  • Opti TS500B 12V 5Ah UPS Replacement Battery
    $19.99 - $19.99
    $19.99
    $19.99 - $19.99
    $19.99

    AJC Battery Compatible with Opti TS500B 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
  • Opti Enhanced RBAT-92 12V 8Ah UPS Replacement Battery
    $29.19 - $29.19
    $29.19
    $29.19 - $29.19
    $29.19

    AJC Battery Compatible with Opti Enhanced RBAT-92 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...

    View full details
    $29.19 - $29.19
    $29.19
    $29.19 - $29.19
    $29.19
  • Opti DS3000B-RM 12V 7Ah UPS Replacement Battery
    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99

    AJC Battery Compatible with Opti DS3000B-RM 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
    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99
  • Opti VS575C 12V 3.2Ah UPS Replacement Battery
    $18.89 - $18.89
    $18.89
    $18.89 - $18.89
    $18.89

    AJC Battery Compatible with Opti VS575C 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...

    View full details
    $18.89 - $18.89
    $18.89
    $18.89 - $18.89
    $18.89
  • Opti PS3000C 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti PS3000C 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti PS2000D-RT 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti PS2000D-RT 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti PS2000D 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti PS2000D 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti PS1500D-RT 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti PS1500D-RT 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti PS1500D-RM 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti PS1500D-RM 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti PS1500B-RM 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti PS1500B-RM 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti PS1500D 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti PS1500D 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti IS2000B 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti IS2000B 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti IS1500B 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti IS1500B 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti DS10KB31T 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti DS10KB31T 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti DS10KB31 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti DS10KB31 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti DS1000E-RM E - C 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti DS1000E-RM E - C 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti DS1000E 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti DS1000E 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti AS2000C-S 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti AS2000C-S 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti AS2000B-S 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti AS2000B-S 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti AS1500C-S 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti AS1500C-S 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti AS1500B-S 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Opti AS1500B-S 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
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Opti PS7500D-RT 12V 8Ah UPS Replacement Battery
    $29.19 - $29.19
    $29.19
    $29.19 - $29.19
    $29.19

    AJC Battery Compatible with Opti PS7500D-RT 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...

    View full details
    $29.19 - $29.19
    $29.19
    $29.19 - $29.19
    $29.19
  • Opti PS3000B 12V 8Ah UPS Replacement Battery
    $29.19 - $29.19
    $29.19
    $29.19 - $29.19
    $29.19

    AJC Battery Compatible with Opti PS3000B 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...

    View full details
    $29.19 - $29.19
    $29.19
    $29.19 - $29.19
    $29.19
  • Opti ES800C 12V 8Ah UPS Replacement Battery
    $29.19 - $29.19
    $29.19
    $29.19 - $29.19
    $29.19

    AJC Battery Compatible with Opti ES800C 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...

    View full details
    $29.19 - $29.19
    $29.19
    $29.19 - $29.19
    $29.19