Skip to content
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 device battery install

UPS Batteries

Browse BatteryClerk.com's selection of RBC replacement batteries for all of the leading RBC battery brands.

  • Best Power FERRUPS FES-850 12V 35Ah UPS Replacement Battery
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89

    Best Power FERRUPS FES-850 12V 35Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power FERRUPS FES-850 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenan...

    View full details
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89
  • Best Power FERRUPS FES-1.15K 12V 35Ah UPS Replacement Battery
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89

    Best Power FERRUPS FES-1.15K 12V 35Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power FERRUPS FES-1.15K UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Mainten...

    View full details
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89
  • Best Power FERRUPS 0800-2K 12V 35Ah UPS Replacement Battery
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89

    Best Power FERRUPS 0800-2K 12V 35Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power FERRUPS 0800-2K UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenan...

    View full details
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89
  • Best Power Unity UT3K 12V 35Ah UPS Replacement Battery
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89

    Best Power Unity UT3K 12V 35Ah UPS Replacement Battery

    In stock

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

    View full details
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89
  • Best Power Unity UT3K UT4K UT5K 12V 35Ah UPS Replacement Battery
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89

    Best Power Unity UT3K UT4K UT5K 12V 35Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power Unity UT3K UT4K UT5K UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Main...

    View full details
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89
  • Best Power UT8K 12V 75Ah UPS Replacement Battery
    $177.19 - $177.19
    $177.19
    $177.19 - $177.19
    $177.19

    Best Power UT8K 12V 75Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power UT8K UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free AGM...

    View full details
    $177.19 - $177.19
    $177.19
    $177.19 - $177.19
    $177.19
  • Best Power SMT 420 B 12V 7Ah UPS Replacement Battery
    $18.59 - $18.59
    $18.59
    $18.59 - $18.59
    $18.59

    Best Power SMT 420 B 12V 7Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power SMT 420 B UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance fre...

    View full details
    $18.59 - $18.59
    $18.59
    $18.59 - $18.59
    $18.59
  • Best Power RST31 Tower 12V 8Ah UPS Replacement Battery
    $21.79 - $21.79
    $21.79
    $21.79 - $21.79
    $21.79

    Best Power RST31 Tower 12V 8Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power RST31 Tower UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance f...

    View full details
    $21.79 - $21.79
    $21.79
    $21.79 - $21.79
    $21.79
  • Best Power PW9355-30 12V 9Ah UPS Replacement Battery
    $26.29 - $26.29
    $26.29
    $26.29 - $26.29
    $26.29

    Best Power PW9355-30 12V 9Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power PW9355-30 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance fre...

    View full details
    $26.29 - $26.29
    $26.29
    $26.29 - $26.29
    $26.29
  • Best Power PW9155-12-64 one UPS-64 12V 9Ah UPS Replacement Battery
    $26.29 - $26.29
    $26.29
    $26.29 - $26.29
    $26.29

    Best Power PW9155-12-64 one UPS-64 12V 9Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power PW9155-12-64 one UPS-64 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely M...

    View full details
    $26.29 - $26.29
    $26.29
    $26.29 - $26.29
    $26.29
  • Best Power PW9125 1250i 12V 9Ah UPS Replacement Battery
    $26.29 - $26.29
    $26.29
    $26.29 - $26.29
    $26.29

    Best Power PW9125 1250i 12V 9Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power PW9125 1250i UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance ...

    View full details
    $26.29 - $26.29
    $26.29
    $26.29 - $26.29
    $26.29
  • Best Power PW9125-2500U 12V 9Ah UPS Replacement Battery
    $26.29 - $26.29
    $26.29
    $26.29 - $26.29
    $26.29

    Best Power PW9125-2500U 12V 9Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power PW9125-2500U UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance ...

    View full details
    $26.29 - $26.29
    $26.29
    $26.29 - $26.29
    $26.29
  • Best Power PW9120 one BAT-700 12V 7Ah UPS Replacement Battery
    $18.59 - $18.59
    $18.59
    $18.59 - $18.59
    $18.59

    Best Power PW9120 one BAT-700 12V 7Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power PW9120 one BAT-700 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Mainte...

    View full details
    $18.59 - $18.59
    $18.59
    $18.59 - $18.59
    $18.59
  • Best Power PW9120 one BAT-1500 12V 7Ah UPS Replacement Battery
    $18.59 - $18.59
    $18.59
    $18.59 - $18.59
    $18.59

    Best Power PW9120 one BAT-1500 12V 7Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power PW9120 one BAT-1500 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maint...

    View full details
    $18.59 - $18.59
    $18.59
    $18.59 - $18.59
    $18.59
  • Best Power PW5125 3000i RM 12V 5Ah UPS Replacement Battery
    $16.99 - $16.99
    $16.99
    $16.99 - $16.99
    $16.99

    Best Power PW5125 3000i RM 12V 5Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power PW5125 3000i RM UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenan...

    View full details
    $16.99 - $16.99
    $16.99
    $16.99 - $16.99
    $16.99
  • Best Power PW5125 EBM-48 RM 12V 9Ah UPS Replacement Battery
    $26.29 - $26.29
    $26.29
    $26.29 - $26.29
    $26.29

    Best Power PW5125 EBM-48 RM 12V 9Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power PW5125 EBM-48 RM UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintena...

    View full details
    $26.29 - $26.29
    $26.29
    $26.29 - $26.29
    $26.29
  • Best Power Patriot SPS650 6V 10Ah UPS Replacement Battery
    $17.49 - $17.49
    $17.49
    $17.49 - $17.49
    $17.49

    Best Power Patriot SPS650 6V 10Ah UPS Replacement Battery

    Low stock

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

    View full details
    $17.49 - $17.49
    $17.49
    $17.49 - $17.49
    $17.49
  • Best Power Patriot Pro 750 II 12V 7Ah UPS Replacement Battery
    $18.59 - $18.59
    $18.59
    $18.59 - $18.59
    $18.59

    Best Power Patriot Pro 750 II 12V 7Ah UPS Replacement Battery

    In stock

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

    View full details
    $18.59 - $18.59
    $18.59
    $18.59 - $18.59
    $18.59
  • Best Power Patriot Pro 2 12V 7Ah UPS Replacement Battery
    $18.59 - $18.59
    $18.59
    $18.59 - $18.59
    $18.59

    Best Power Patriot Pro 2 12V 7Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power Patriot Pro 2 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance...

    View full details
    $18.59 - $18.59
    $18.59
    $18.59 - $18.59
    $18.59
  • Best Power Patriot Pro II 1000VA 6V 12Ah UPS Replacement Battery
    $18.49 - $18.49
    $18.49
    $18.49 - $18.49
    $18.49

    Best Power Patriot Pro II 1000VA 6V 12Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power Patriot Pro II 1000VA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Mai...

    View full details
    $18.49 - $18.49
    $18.49
    $18.49 - $18.49
    $18.49
  • Best Power Patriot 600(SPI600VA) 6V 12Ah UPS Replacement Battery
    $18.49 - $18.49
    $18.49
    $18.49 - $18.49
    $18.49

    Best Power Patriot 600(SPI600VA) 6V 12Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power Patriot 600 SPI600VA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Mai...

    View full details
    $18.49 - $18.49
    $18.49
    $18.49 - $18.49
    $18.49
  • Best Power Patriot 600 12V 7Ah UPS Replacement Battery
    $18.59 - $18.59
    $18.59
    $18.59 - $18.59
    $18.59

    Best Power Patriot 600 12V 7Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power Patriot 600 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance f...

    View full details
    $18.59 - $18.59
    $18.59
    $18.59 - $18.59
    $18.59
  • Best Power Patriot 425 12V 8Ah UPS Replacement Battery
    $21.79 - $21.79
    $21.79
    $21.79 - $21.79
    $21.79

    Best Power Patriot 425 12V 8Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power Patriot 425 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance f...

    View full details
    $21.79 - $21.79
    $21.79
    $21.79 - $21.79
    $21.79
  • Best Power Patriot 425 UPS 12V 8Ah UPS Replacement Battery
    $21.79 - $21.79
    $21.79
    $21.79 - $21.79
    $21.79

    Best Power Patriot 425 UPS 12V 8Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power Patriot 425 UPS UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenan...

    View full details
    $21.79 - $21.79
    $21.79
    $21.79 - $21.79
    $21.79