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APC
APC SUA48RMXLBP3U 48V 1728 VAH 3U UPS replacement battery
A 48 V, 1728 VAH sealed lead-acid battery pack in a 3U rack enclosure for APC Smart-UPS XL systems
- TypeBattery
- CompatibilityBattery Volt-Amp-Hour Capacity: 1728
- SpecificationsBattery Output Voltage: 48 Battery Type: Maintenance-free se
- Dimensions5.25" x 19" x 26"
- Weight140.00 lbs.
- 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.
Highlights
- 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
Specifications
| Brand | APC |
|---|---|
| Model | SUA48RMXLBP3U |
| Type | Battery |
| Compatibility | Battery Volt-Amp-Hour Capacity: 1728 |
| Specifications | Battery Output Voltage: 48 Battery Type: Maintenance-free sealed Lead-Acid battery with suspended electrolyte : leakproof Battery mounting: Enclosed battery cartridge Expected Battery Life (years): 3 - 5 RBC Quantity: 2 Battery blocks per string: 4 |
| Dimensions | 5.25" x 19" x 26" |
| Weight | 140.00 lbs. |
| Shipping weight | 71.85 kg |
| Package size | 980 × 610 × 280 mm |
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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