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 Batteries

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

  • Best Power 1.5KVA 12V 35Ah UPS Replacement Battery
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89

    Best Power 1.5KVA 12V 35Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power 1.5KVA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free A...

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

    Best Power 2KVA 12V 35Ah UPS Replacement Battery

    In stock

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

    View full details
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89
  • Best Power 4.3KVA 12V 35Ah UPS Replacement Battery
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89

    Best Power 4.3KVA 12V 35Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power 4.3KVA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free A...

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

    Best Power UT4K 12V 35Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power UT4K UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free AGM...

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

    Best Power UT5K 12V 35Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power UT5K UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free AGM...

    View full details
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89
  • Best Power 2.5KVA 12V 35Ah UPS Replacement Battery
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89

    Best Power 2.5KVA 12V 35Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power 2.5KVA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free A...

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

    Best Power UT3K 12V 35Ah UPS Replacement Battery

    In stock

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

    View full details
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89
  • Best Power 3.0KVA 12V 35Ah UPS Replacement Battery
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89

    Best Power 3.0KVA 12V 35Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power 3.0KVA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free A...

    View full details
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89
  • Best Power 5.0KVA 12V 35Ah UPS Replacement Battery
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89

    Best Power 5.0KVA 12V 35Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power 5.0KVA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free A...

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

    Best Power 1.15KVA 12V 35Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power 1.15KVA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free ...

    View full details
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89
  • Best Power 500VA 12V 35Ah UPS Replacement Battery
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89

    Best Power 500VA 12V 35Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power 500VA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free AG...

    View full details
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89
  • Best Power 700VA 12V 35Ah UPS Replacement Battery
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89

    Best Power 700VA 12V 35Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power 700VA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free AG...

    View full details
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89
  • Best Power 2.0KVA 12V 35Ah UPS Replacement Battery
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89

    Best Power 2.0KVA 12V 35Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power 2.0KVA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free A...

    View full details
    $92.89 - $92.89
    $92.89
    $92.89 - $92.89
    $92.89
  • Best Power Fortress LI 1.3KVA BAT-0058 12V 18Ah UPS Replacement Battery
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39

    Best Power Fortress LI 1.3KVA BAT-0058 12V 18Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power Fortress LI 1.3KVA BAT-0058 UPS Battery Exact OEM replacement guaranteed to fit easily and precise...

    View full details
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39
  • Best Power Fortress Rack Mount LI 1020 BAT-0058 12V 18Ah UPS Replacement Battery
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39

    Best Power Fortress Rack Mount LI 1020 BAT-0058 12V 18Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power Fortress Rack Mount LI 1020 BAT-0058 UPS Battery Exact OEM replacement guaranteed to fit easily an...

    View full details
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39
  • Best Power Fortress II LI 1420 12V 18Ah UPS Replacement Battery
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39

    Best Power Fortress II LI 1420 12V 18Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power Fortress II LI 1420 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maint...

    View full details
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39
  • Best Power LI 1420 12V 18Ah UPS Replacement Battery
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39

    Best Power LI 1420 12V 18Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power LI 1420 UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free ...

    View full details
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39
  • Best Power LI 1420 Fortress II 12V 18Ah UPS Replacement Battery
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39

    Best Power LI 1420 Fortress II 12V 18Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power LI 1420 Fortress II UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maint...

    View full details
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39
  • Best Power 1420 Fortress II 12V 18Ah UPS Replacement Battery
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39

    Best Power 1420 Fortress II 12V 18Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power 1420 Fortress II UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintena...

    View full details
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39
  • Best Power 1.3KVA 12V 18Ah UPS Replacement Battery
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39

    Best Power 1.3KVA 12V 18Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power 1.3KVA UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance free A...

    View full details
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39
  • Best Power 1420 Fortress 12V 18Ah UPS Replacement Battery
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39

    Best Power 1420 Fortress 12V 18Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power 1420 Fortress UPS Battery Exact OEM replacement guaranteed to fit easily and precisely Maintenance...

    View full details
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39
  • Best Power Fortress LI 1.3KVA 12V 18Ah UPS Replacement Battery
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39

    Best Power Fortress LI 1.3KVA 12V 18Ah UPS Replacement Battery

    In stock

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

    View full details
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39
  • Best Power Fortress LI 1420 12V 18Ah UPS Replacement Battery
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39

    Best Power Fortress LI 1420 12V 18Ah UPS Replacement Battery

    In stock

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

    View full details
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39
  • Best Power Fortress Rackmount 1020 LI 12V 18Ah UPS Replacement Battery
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39

    Best Power Fortress Rackmount 1020 LI 12V 18Ah UPS Replacement Battery

    In stock

    Info AJC® replacement compatible with Best Power Fortress Rackmount 1020 LI UPS Battery Exact OEM replacement guaranteed to fit easily and precisel...

    View full details
    $52.39 - $52.39
    $52.39
    $52.39 - $52.39
    $52.39