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APC 3U rack-mount battery pack, 5.25 by 19 by 26 inches, dark metal enclosure

APC

APC SUA48RMXLBP3U 48V 1728 VAH 3U UPS replacement battery

SKU CH-DD1X-TQZWE MPN SUA48RMXLBP3U

A 48 V, 1728 VAH sealed lead-acid battery pack in a 3U rack enclosure for APC Smart-UPS XL systems

  • Product typeBattery
  • Compatible withBattery Volt-Amp-Hour Capacity: 1728
  • DetailsBattery Output Voltage: 48 Battery Type: Maintenance-free se
  • Product dimensions5.25 in × 19 in × 26 in
  • Product weight140 lb (63.5 kg)
  • Leakproof sealed lead-acid design prevents spills
  • 1728 VAH capacity extends UPS runtime
  • 48 V output matches Smart-UPS XL requirements
  • Enclosed cartridge enables quick 3U rack installation
  • 3 to 5 year expected life reduces replacement frequency

APC Smart-UPS XL 48V RM 3U Battery Pack

This replacement battery pack delivers 48V output and 1728 VAH capacity for compatible Smart-UPS XL units. It uses maintenance-free sealed lead-acid cells with suspended electrolyte in a leakproof enclosed cartridge. The pack contains two RBCs with four battery blocks per string. It is designed for rack-mount installations requiring 3U of space.

Thermals noise and power draw

Sealed lead-acid chemistry produces no fan noise during standby or discharge cycles. Heat output remains low under normal float-charge conditions in a climate-controlled rack. The cartridge enclosure contains any off-gassing and prevents electrolyte leakage. No active cooling is required for the battery itself.

What the bundled accessories change

The pre-wired enclosed cartridge allows tool-less replacement without disconnecting load cables. Two RBC modules simplify handling compared with single large blocks. Leakproof construction protects rack equipment from acid damage if a cell fails. Expected service life of three to five years reduces scheduled maintenance intervals.

How it compares

Measured against everything we stock in UPS Replacement Batteries, at today’s prices. Recalculated every night.

Price $994.99
Pricier than about 92% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand nameAPC
Model nameSUA48RMXLBP3U
Product typeBattery
Size & build
Product dimensions5.25 in × 19 in × 26 in
Product weight140 lb (63.5 kg)
Shipping weight71.85 kg
Package size980 × 610 × 280 mm
Compatibility
Compatible withBattery Volt-Amp-Hour Capacity: 1728

Questions about this item

How do I install the 140.00 lb enclosed battery cartridge into a 3U rack space?

The cartridge measures 5.25 inches high by 19 inches wide by 26 inches deep and fits a standard 3U rack opening; the step most people miss is using a mechanical lift or two-person team to slide the 140.00 lb unit onto the rails without damaging the connectors.

When will the maintenance-free sealed lead-acid blocks need replacement?

Expected battery life is 3 to 5 years; plan to replace both RBC cartridges — each string contains four blocks — once runtime drops below the 1728 VAH rating or the UPS reports a battery fault.

What runtime limit appears first during a prolonged 48 V discharge?

The 1728 VAH capacity defines the total energy available; under sustained load the pack will hit that volt-amp-hour limit and shut down before any thermal or voltage threshold is reached.

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