{"id":247,"date":"2026-08-21T11:26:26","date_gmt":"2026-08-21T11:26:26","guid":{"rendered":"https:\/\/axtron.group\/store\/?post_type=product&p=247"},"modified":"2026-08-24T19:24:44","modified_gmt":"2026-08-24T19:24:44","slug":"aps-rtx-powerline-flex-pl31-br20120fl-20x12v-9ah-rack-battery-pack-for-6kva-10kva-ups","status":"publish","type":"product","link":"https:\/\/axtron.group\/store\/product\/aps-rtx-powerline-flex-pl31-br20120fl-20x12v-9ah-rack-battery-pack-for-6kva-10kva-ups\/","title":{"rendered":"APS-RTx PowerLine Flex PL31-BR20120FL \u2013 20\u00d712V 9Ah Rack Battery Pack for 6kVA & 10kVA UPS"},"content":{"rendered":"

The APS-RTx PowerLine Flex PL31-BR20120FL<\/strong> provides a complete external battery solution for compatible PL31 PowerLine Flex 6kVA and 10kVA long-run UPS systems<\/strong>.<\/p>\n

The battery pack contains 20 \u00d7 12V 9Ah maintenance-free VRLA batteries<\/strong>, factory arranged to provide the \u00b1120VDC battery configuration<\/strong> required by the compatible UPS.<\/p>\n

With approximately 2.16kWh of nominal battery energy<\/strong>, the PL31-BR20120FL provides stored energy for maintaining critical loads when utility power is unavailable. Actual UPS runtime depends on the connected load, battery condition, operating temperature and UPS efficiency.<\/p>\n

Its compact 3U rack-mount design<\/strong> allows the battery pack to be installed alongside the UPS in standard server, communications and equipment racks, creating a clean and integrated backup-power installation.<\/p>\n

The battery pack is particularly suitable for applications where the PL31 FL 6.0k HC or PL31 FL 10.0k HC<\/strong> is supplied as a long-run UPS without internal batteries.<\/p>\n

Key Features<\/h3>\n
    \n
  • 20 \u00d7 12V 9Ah<\/strong> internal VRLA batteries<\/li>\n
  • \u00b1120VDC battery system<\/strong><\/li>\n
  • 240VDC total series battery voltage<\/strong><\/li>\n
  • Approximately 2.16kWh nominal battery energy<\/strong><\/li>\n
  • Designed for PL31 FL 6.0k HC<\/strong><\/li>\n
  • Designed for PL31 FL 10.0k HC<\/strong><\/li>\n
  • Complete external UPS battery pack<\/li>\n
  • Maintenance-free sealed VRLA batteries<\/li>\n
  • Compact 3U rack-mount design<\/strong><\/li>\n
  • Suitable for standard equipment and server racks<\/li>\n
  • Integrated battery enclosure<\/li>\n
  • Designed for long-run online UPS applications<\/li>\n
  • Typical battery recharge to 90%: 6\u20138 hours<\/strong><\/li>\n
  • Typical battery design life: 3\u20135 years<\/strong>, depending on operating conditions and discharge cycles<\/li>\n
  • Suitable for critical IT, communications and business applications<\/li>\n<\/ul>\n

    Compatible UPS Models<\/h3>\n\n\n\n\n\n
    UPS Model<\/th>\nCapacity<\/th>\nCompatibility<\/th>\n<\/tr>\n
    PL31 FL 6.0k HC<\/strong><\/td>\n6kVA \/ 6kW<\/td>\nCompatible<\/td>\n<\/tr>\n
    PL31 FL 10.0k HC<\/strong><\/td>\n10kVA \/ 10kW<\/td>\nCompatible<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Typical Applications<\/h3>\n

    Suitable for battery backup systems supporting:<\/p>\n

      \n
    • Servers and server rooms<\/li>\n
    • Data centres<\/li>\n
    • Network infrastructure<\/li>\n
    • Telecommunications equipment<\/li>\n
    • Banking and financial systems<\/li>\n
    • CCTV and security systems<\/li>\n
    • Access-control infrastructure<\/li>\n
    • Business-critical IT systems<\/li>\n
    • Communications racks<\/li>\n
    • Industrial control systems<\/li>\n
    • Automation equipment<\/li>\n
    • Medical support equipment<\/li>\n
    • Branch IT infrastructure<\/li>\n
    • Critical office systems<\/li>\n<\/ul>\n

      Technical Specifications<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
      Specification<\/td>\nPL31-BR20120FL<\/td>\n<\/tr>\n
      Product Type<\/td>\nExternal UPS Battery Pack<\/td>\n<\/tr>\n
      Battery Technology<\/td>\nMaintenance-Free VRLA<\/td>\n<\/tr>\n
      Battery Quantity<\/td>\n20 pcs<\/strong><\/td>\n<\/tr>\n
      Battery Rating<\/td>\n12V 9Ah each<\/strong><\/td>\n<\/tr>\n
      Battery System Voltage<\/td>\n\u00b1120VDC<\/strong><\/td>\n<\/tr>\n
      Total Series Voltage<\/td>\n240VDC<\/strong><\/td>\n<\/tr>\n
      Nominal Battery Energy<\/td>\n2.16kWh<\/strong><\/td>\n<\/tr>\n
      Configuration<\/td>\n1 \u00d7 20 batteries<\/strong><\/td>\n<\/tr>\n
      Enclosure<\/td>\nRack-Mount Battery Cabinet<\/td>\n<\/tr>\n
      Rack Height<\/td>\n3U<\/strong><\/td>\n<\/tr>\n
      Compatible UPS Capacity<\/td>\n6kVA & 10kVA<\/strong><\/td>\n<\/tr>\n
      Compatible UPS Models<\/td>\nPL31 FL 6.0k HC \/ PL31 FL 10.0k HC<\/strong><\/td>\n<\/tr>\n
      Typical Recharge Time<\/td>\nApprox. 6\u20138 hours to 90%<\/strong><\/td>\n<\/tr>\n
      Typical Battery Life<\/td>\n3\u20135 years<\/strong> depending on use and environment<\/td>\n<\/tr>\n
      Operating Temperature<\/td>\n0\u201340\u00b0C<\/strong><\/td>\n<\/tr>\n
      Relative Humidity<\/td>\n0\u201395% RH, non-condensing<\/strong><\/td>\n<\/tr>\n
      Dimensions<\/td>\n443 \u00d7 720 \u00d7 131 mm (W \u00d7 D \u00d7 H)<\/strong><\/td>\n<\/tr>\n
      Net Weight<\/td>\n63 kg<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Battery Capacity<\/h3>\n

      The PL31-BR20120FL contains:<\/p>\n

      20 \u00d7 12V \u00d7 9Ah = 2,160Wh<\/strong><\/p>\n

      This provides approximately 2.16kWh of nominal stored battery energy<\/strong>.<\/p>\n

      Actual usable backup energy and runtime will be lower and will vary depending on:<\/p>\n

        \n
      • UPS load percentage<\/li>\n
      • Battery age and condition<\/li>\n
      • Ambient temperature<\/li>\n
      • UPS conversion efficiency<\/li>\n
      • Battery discharge characteristics<\/li>\n<\/ul>\n

        For this reason, UPS runtime should be calculated based on the actual connected load rather than nominal battery energy alone.<\/p>\n","protected":false},"excerpt":{"rendered":"

        The APS-RTx PL31-BR20120FL<\/strong> is a 2.16kWh external battery box<\/strong> containing 20 \u00d7 12V 9Ah maintenance-free VRLA batteries<\/strong> in a compact 3U rack enclosure. Designed for the PL31 FL 6.0k HC and 10.0k HC UPS systems, it provides the required \u00b1120VDC battery supply for reliable backup operation.<\/p>\n","protected":false},"featured_media":253,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[30,33,32],"product_tag":[86,88,83,84,85,90,87,39,92,93,94,40,89,95,82,81,91],"class_list":["post-247","product","type-product","status-publish","has-post-thumbnail","product_cat-ups-backup-power","product_cat-ups-accessories","product_cat-ups-batteries","product_tag-120vdc-battery","product_tag-10kva-ups-battery","product_tag-12v-9ah-battery","product_tag-20-battery-pack","product_tag-240vdc-battery-bank","product_tag-3u-battery-pack","product_tag-6kva-ups-battery","product_tag-aps-rtx","product_tag-external-ups-battery","product_tag-long-run-ups-battery","product_tag-pl31-br20120fl","product_tag-powerline-flex","product_tag-rack-mount-battery","product_tag-ups-backup-battery","product_tag-ups-battery-cabinet","product_tag-ups-battery-pack","product_tag-vrla-battery","first","instock","taxable","shipping-taxable","purchasable","product-type-composite"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/axtron.group\/store\/wp-json\/wp\/v2\/product\/247","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/axtron.group\/store\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/axtron.group\/store\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/axtron.group\/store\/wp-json\/wp\/v2\/comments?post=247"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/axtron.group\/store\/wp-json\/wp\/v2\/media\/253"}],"wp:attachment":[{"href":"https:\/\/axtron.group\/store\/wp-json\/wp\/v2\/media?parent=247"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/axtron.group\/store\/wp-json\/wp\/v2\/product_brand?post=247"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/axtron.group\/store\/wp-json\/wp\/v2\/product_cat?post=247"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/axtron.group\/store\/wp-json\/wp\/v2\/product_tag?post=247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}