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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 Technologies Patriot 0305-0425U 12V 7Ah UPS Replacement Battery
    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99

    AJC Battery Compatible with Best Technologies Patriot 0305-0425U 12V 7Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies Patriot 0305-0425U UPS Battery Exact OEM replacement guaranteed to fit easily and precisely...

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    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99
  • Best Technologies LI 360 BAT-0060 12V 4.5Ah UPS Replacement Battery
    $18.59 - $18.59
    $18.59
    $18.59 - $18.59
    $18.59

    AJC Battery Compatible with Best Technologies LI 360 BAT-0060 12V 4.5Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies LI 360 BAT-0060 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Ma...

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    $18.59 - $18.59
    $18.59
    $18.59 - $18.59
    $18.59
  • Best Technologies Pro 400 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Best Technologies Pro 400 12V 9Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies Pro 400 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenanc...

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    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Best Technologies SMT280 12V 7Ah UPS Replacement Battery
    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99

    AJC Battery Compatible with Best Technologies SMT280 12V 7Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies SMT280 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance...

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    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99
  • Best Technologies Patriot SPS650 6V 12Ah UPS Replacement Battery
    $19.99 - $19.99
    $19.99
    $19.99 - $19.99
    $19.99

    AJC Battery Compatible with Best Technologies Patriot SPS650 6V 12Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies Patriot SPS650 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Mai...

    View full details
    $19.99 - $19.99
    $19.99
    $19.99 - $19.99
    $19.99
  • Best Technologies Patriot SPI600 6V 12Ah UPS Replacement Battery
    $19.99 - $19.99
    $19.99
    $19.99 - $19.99
    $19.99

    AJC Battery Compatible with Best Technologies Patriot SPI600 6V 12Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies Patriot SPI600 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Mai...

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    $19.99 - $19.99
    $19.99
    $19.99 - $19.99
    $19.99
  • Best Technologies LI 1800 6V 12Ah UPS Replacement Battery
    $19.99 - $19.99
    $19.99
    $19.99 - $19.99
    $19.99

    AJC Battery Compatible with Best Technologies LI 1800 6V 12Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies LI 1800 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenanc...

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    $19.99 - $19.99
    $19.99
    $19.99 - $19.99
    $19.99
  • Best Technologies LI 1020 (Fortress) 6V 12Ah UPS Replacement Battery
    $19.99 - $19.99
    $19.99
    $19.99 - $19.99
    $19.99

    AJC Battery Compatible with Best Technologies LI 1020 (Fortress) 6V 12Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies LI 1020 (Fortress) UPS Battery Exact OEM replacement guaranteed to fit easily and precisely...

    View full details
    $19.99 - $19.99
    $19.99
    $19.99 - $19.99
    $19.99
  • Best Technologies Patriot SPS850 12V 7Ah UPS Replacement Battery
    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99

    AJC Battery Compatible with Best Technologies Patriot SPS850 12V 7Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies Patriot SPS850 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Mai...

    View full details
    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99
  • Best Technologies Patriot II Pro 750 12V 7Ah UPS Replacement Battery
    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99

    AJC Battery Compatible with Best Technologies Patriot II Pro 750 12V 7Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies Patriot II Pro 750 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely...

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    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99
  • Best Technologies LI 750 (Fortress Rack Mount) 12V 7Ah UPS Replacement Battery
    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99

    AJC Battery Compatible with Best Technologies LI 750 (Fortress Rack Mount) 12V 7Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies LI 750 (Fortress Rack Mount) UPS Battery Exact OEM replacement guaranteed to fit easily and...

    View full details
    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99
  • Best Technologies LI 1020 (Fortress II) 12V 7Ah UPS Replacement Battery
    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99

    AJC Battery Compatible with Best Technologies LI 1020 (Fortress II) 12V 7Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies LI 1020 (Fortress II) UPS Battery Exact OEM replacement guaranteed to fit easily and precis...

    View full details
    $23.99 - $23.99
    $23.99
    $23.99 - $23.99
    $23.99
  • Best Technologies Patriot II Pro 400 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Best Technologies Patriot II Pro 400 12V 9Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies Patriot II Pro 400 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely...

    View full details
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Best Technologies LI 750 (Fortress) 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Best Technologies LI 750 (Fortress) 12V 9Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies LI 750 (Fortress) UPS Battery Exact OEM replacement guaranteed to fit easily and precisely ...

    View full details
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Best Technologies LI 1425 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Best Technologies LI 1425 12V 9Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies LI 1425 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenanc...

    View full details
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Best Technologies LI 1050 (Fortress) 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Best Technologies LI 1050 (Fortress) 12V 9Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies LI 1050 (Fortress) UPS Battery Exact OEM replacement guaranteed to fit easily and precisely...

    View full details
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Best Technologies LI 1050 (Fortress Rack Mount) 12V 9Ah UPS Replacement Battery
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19

    AJC Battery Compatible with Best Technologies LI 1050 (Fortress Rack Mount) 12V 9Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies LI 1050 (Fortress Rack Mount) UPS Battery Exact OEM replacement guaranteed to fit easily an...

    View full details
    $32.19 - $32.19
    $32.19
    $32.19 - $32.19
    $32.19
  • Best Technologies LI 1420 (Fortress) 12V 18Ah UPS Replacement Battery
    $57.19 - $57.19
    $57.19
    $57.19 - $57.19
    $57.19

    AJC Battery Compatible with Best Technologies LI 1420 (Fortress) 12V 18Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies LI 1420 (Fortress) UPS Battery Exact OEM replacement guaranteed to fit easily and precisely...

    View full details
    $57.19 - $57.19
    $57.19
    $57.19 - $57.19
    $57.19
  • Best Technologies LI 1.3KVA 12V 18Ah UPS Replacement Battery
    $57.19 - $57.19
    $57.19
    $57.19 - $57.19
    $57.19

    AJC Battery Compatible with Best Technologies LI 1.3KVA 12V 18Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies LI 1.3KVA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintena...

    View full details
    $57.19 - $57.19
    $57.19
    $57.19 - $57.19
    $57.19
  • Best Technologies 3.1KVA 12V 18Ah UPS Replacement Battery
    $57.19 - $57.19
    $57.19
    $57.19 - $57.19
    $57.19

    AJC Battery Compatible with Best Technologies 3.1KVA 12V 18Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies 3.1KVA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance...

    View full details
    $57.19 - $57.19
    $57.19
    $57.19 - $57.19
    $57.19
  • Best Technologies 1.8KVA 12V 18Ah UPS Replacement Battery
    $57.19 - $57.19
    $57.19
    $57.19 - $57.19
    $57.19

    AJC Battery Compatible with Best Technologies 1.8KVA 12V 18Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies 1.8KVA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance...

    View full details
    $57.19 - $57.19
    $57.19
    $57.19 - $57.19
    $57.19
  • Best Technologies 2.1KVA 12V 18Ah UPS Replacement Battery
    $57.19 - $57.19
    $57.19
    $57.19 - $57.19
    $57.19

    AJC Battery Compatible with Best Technologies 2.1KVA 12V 18Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies 2.1KVA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance...

    View full details
    $57.19 - $57.19
    $57.19
    $57.19 - $57.19
    $57.19
  • Best Technologies Unity UT5K 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Technologies Unity UT5K 12V 35Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies Unity UT5K UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Mainten...

    View full details
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29
  • Best Technologies Unity UT3K 12V 35Ah UPS Replacement Battery
    $109.29 - $109.29
    $109.29
    $109.29 - $109.29
    $109.29

    AJC Battery Compatible with Best Technologies Unity UT3K 12V 35Ah UPS Battery

    In stock

    Info AJC® replacement compatible with Best Technologies Unity UT3K UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Mainten...

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