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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

  • Portalac PE6V4.5F1 6V 4.5Ah UPS Replacement Battery
    $8.19 - $9.99
    $8.19 - $9.99
    $8.19 - $9.99
    $8.19

    AJC Battery Compatible with Portalac PE6V4.5F1 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
    $8.19 - $9.99
    $8.19 - $9.99
    $8.19 - $9.99
    $8.19
  • Portalac PE6V1 6V 12Ah UPS Replacement Battery
    $19.79 - $19.79
    $19.79
    $19.79 - $19.79
    $19.79

    AJC Battery Compatible with Portalac PE6V1 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 ...

    View full details
    $19.79 - $19.79
    $19.79
    $19.79 - $19.79
    $19.79
  • Portalac PE6V1.2F1 6V 1.3Ah UPS Replacement Battery
    $5.69 - $5.69
    $5.69
    $5.69 - $5.69
    $5.69

    AJC Battery Compatible with Portalac PE6V1.2F1 6V 1.3Ah 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
    $5.69 - $5.69
    $5.69
    $5.69 - $5.69
    $5.69
  • Portalac PE4.5-12R 12V 4.5Ah UPS Replacement Battery
    $17.49 - $18.49
    $17.49 - $18.49
    $17.49 - $18.49
    $17.49

    AJC Battery Compatible with Portalac PE4.5-12R 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...

    View full details
    $17.49 - $18.49
    $17.49 - $18.49
    $17.49 - $18.49
    $17.49
  • Portalac PE6V10 6V 12Ah UPS Replacement Battery
    $19.79 - $19.79
    $19.79
    $19.79 - $19.79
    $19.79

    AJC Battery Compatible with Portalac PE6V10 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 ...

    View full details
    $19.79 - $19.79
    $19.79
    $19.79 - $19.79
    $19.79
  • Portalac PE12V24A 12V 26Ah UPS Replacement Battery
    $76.99 - $76.99
    $76.99
    $76.99 - $76.99
    $76.99

    AJC Battery Compatible with Portalac PE12V24A 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...

    View full details
    $76.99 - $76.99
    $76.99
    $76.99 - $76.99
    $76.99
  • Portalac TPH12080 12V 8Ah UPS Replacement Battery
    $22.99 - $22.99
    $22.99
    $22.99 - $22.99
    $22.99

    AJC Battery Compatible with Portalac TPH12080 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
    $22.99 - $22.99
    $22.99
    $22.99 - $22.99
    $22.99
  • Portalac PXL12120 12V 12Ah UPS Replacement Battery
    $41.89 - $46.59
    $41.89 - $46.59
    $41.89 - $46.59
    $41.89

    AJC Battery Compatible with Portalac PXL12120 12V 12Ah 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
    $41.89 - $46.59
    $41.89 - $46.59
    $41.89 - $46.59
    $41.89
  • Portalac PXL12120 12V 10Ah UPS Replacement Battery
    $35.39 - $46.59
    $35.39 - $46.59
    $35.39 - $46.59
    $35.39

    AJC Battery Compatible with Portalac PXL12120 12V 10Ah 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
    $35.39 - $46.59
    $35.39 - $46.59
    $35.39 - $46.59
    $35.39
  • Portalac PX12170 12V 22Ah UPS Replacement Battery
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99

    AJC Battery Compatible with Portalac PX12170 12V 22Ah 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
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99
  • Portalac PE12V22B1 12V 22Ah UPS Replacement Battery
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99

    AJC Battery Compatible with Portalac PE12V22B1 12V 22Ah 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
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99
  • Portalac PE12V17 (Nut & Bolt) 12V 22Ah UPS Replacement Battery
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99

    AJC Battery Compatible with Portalac PE12V17 Nut & Bolt 12V 22Ah 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
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99
  • Portalac TEV12220 12V 22Ah UPS Replacement Battery
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99

    AJC Battery Compatible with Portalac TEV12220 12V 22Ah 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
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99
  • Portalac PXL12220 12V 22Ah UPS Replacement Battery
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99

    AJC Battery Compatible with Portalac PXL12220 12V 22Ah 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
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99
  • Portalac PE12V22 12V 22Ah UPS Replacement Battery
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99

    AJC Battery Compatible with Portalac PE12V22 12V 22Ah 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
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99
  • Portalac PE12V17 12V 22Ah UPS Replacement Battery
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99

    AJC Battery Compatible with Portalac PE12V17 12V 22Ah 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
    $58.99 - $58.99
    $58.99
    $58.99 - $58.99
    $58.99
  • Portalac PXL12023 12V 2.2Ah UPS Battery
    $42.49 - $42.49
    $42.49
    $42.49 - $42.49
    $42.49

    UPG Battery Compatible with Portalac PXL12023 12V 2.2Ah UPS Battery

    This is an UPG® Brand replacement compatible with Portalac UPS Batteries Terminal: F1 Volts: 12V (12 Volt) Ah: 2.2Ah (2200mAh) Replacement Bat...

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    $42.49 - $42.49
    $42.49
    $42.49 - $42.49
    $42.49
  • Portalac PE6-3AH 6V 3.4Ah UPS Battery
    $51.99 - $51.99
    $51.99
    $51.99 - $51.99
    $51.99

    UPG Battery Compatible with Portalac PE6-3AH 6V 3.4Ah UPS Battery

    This is an UPG® Brand replacement compatible with Portalac UPS Batteries Terminal: F1 Volts: 6V (6 Volt) Ah: 3.4Ah (3400mAh) Replacement Batte...

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    $51.99 - $51.99
    $51.99
    $51.99 - $51.99
    $51.99
  • Portalac PE12V2.7 12V 2.9Ah UPS Battery
    $54.49 - $54.49
    $54.49
    $54.49 - $54.49
    $54.49

    UPG Battery Compatible with Portalac PE12V2.7 12V 2.9Ah UPS Battery

    This is an UPG® Brand replacement compatible with Portalac UPS Batteries Terminal: F1 Volts: 12V (12 Volt) Ah: 2.9Ah (2900mAh) Replacement Bat...

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    $54.49 - $54.49
    $54.49
    $54.49 - $54.49
    $54.49
  • Portalac PXL12050 12V 4.5Ah UPS Replacement Battery
    $17.49 - $18.49
    $17.49 - $18.49
    $17.49 - $18.49
    $17.49

    AJC Battery Compatible with Portalac PXL12050 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...

    View full details
    $17.49 - $18.49
    $17.49 - $18.49
    $17.49 - $18.49
    $17.49
  • Portalac PX016120 6V 12Ah UPS Replacement Battery
    $19.79 - $19.79
    $19.79
    $19.79 - $19.79
    $19.79

    AJC Battery Compatible with Portalac PX016120 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 ...

    View full details
    $19.79 - $19.79
    $19.79
    $19.79 - $19.79
    $19.79
  • Portalac PE6V7.2F1 6V 7Ah UPS Replacement Battery
    $11.79 - $11.79
    $11.79
    $11.79 - $11.79
    $11.79

    AJC Battery Compatible with Portalac PE6V7.2F1 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 ...

    View full details
    $11.79 - $11.79
    $11.79
    $11.79 - $11.79
    $11.79
  • Portalac PE6V6.5 6V 7Ah UPS Replacement Battery
    $11.79 - $11.79
    $11.79
    $11.79 - $11.79
    $11.79

    AJC Battery Compatible with Portalac PE6V6.5 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 ...

    View full details
    $11.79 - $11.79
    $11.79
    $11.79 - $11.79
    $11.79
  • Portalac PE6V4A 6V 4.5Ah UPS Replacement Battery
    $8.19 - $9.99
    $8.19 - $9.99
    $8.19 - $9.99
    $8.19

    AJC Battery Compatible with Portalac PE6V4A 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
    $8.19 - $9.99
    $8.19 - $9.99
    $8.19 - $9.99
    $8.19

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.