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Rectangular black metal rack tower battery pack 26.3 by 17 by 3.4 inches 124 lbs

APC

APC SMX120RMBP2U accessory

SKU CH-RNNW-ZBZ5N MPN SMX120RMBP2U

External battery pack extends runtime for compatible Smart-UPS units with 1200 VAh capacity at 120 V DC

  • TypeBattery
  • CompatibilitySMX2000RMLV2U, SMX2200RMHV2U, SMX2200RMLV2U, SMX3000RMHV2U,
  • Specificationsbattoutvolt: 120 Battery Volt-Amp-Hour Capacity: 1200 Batter
  • FeaturesHot-swappable batteries: Ensures clean, uninterrupted power
  • Dimensions26.26" x 17.01" x 3.35"
  • Weight124.25 lbs.
  • Hot-swappable batteries keep equipment running during replacement
  • 1200 VAh capacity extends runtime for compatible Smart-UPS models
  • Maintenance-free sealed lead-acid design eliminates electrolyte checks
  • 2U rack or tower form factor fits standard enclosures
  • RoHS and REACH compliant with no SVHCs

External Battery Pack for Smart-UPS

The APC SMX120RMBP2U is a 120 V DC external battery pack designed to extend the runtime of compatible Smart-UPS units. It serves IT managers and facility operators who need longer backup time for critical loads in rack or tower environments. The unit uses maintenance-free sealed lead-acid batteries with suspended electrolyte for spill-proof operation. It is built for indoor use in standard rack enclosures.

Runtime Scales With Connected Load

The pack delivers a 1200 VAh capacity at 120 V DC output, but actual runtime depends entirely on the power draw of the attached UPS and its connected equipment. Heavier loads will deplete the reserve faster, while lighter loads yield proportionally longer support. The battery voltage is fixed at 120 V DC, so it only works with UPS models designed for that DC bus. Ambient temperature and battery age also affect achievable minutes.

Hot-Swap Design With Rack Hardware Included

Hot-swappable battery cartridges allow a trained user to replace cells without powering down the protected equipment. The package includes rack-mounting brackets and an installation guide for 2U rack or tower deployment. The unit weighs 124.25 lbs and measures 26.26 by 17.01 by 3.35 inches, so two people or a lift are usually needed to position it safely. Ensure the target UPS is on the supported compatibility list before installation.

Highlights

  • Hot-swappable batteries keep equipment running during replacement
  • 1200 VAh capacity extends runtime for compatible Smart-UPS models
  • Maintenance-free sealed lead-acid design eliminates electrolyte checks
  • 2U rack or tower form factor fits standard enclosures
  • RoHS and REACH compliant with no SVHCs

Specifications

BrandAPC
SeriesSmart-UPS
ModelSMX120RMBP2U
TypeBattery
CompatibilitySMX2000RMLV2U, SMX2200RMHV2U, SMX2200RMLV2U, SMX3000RMHV2U, SMX3000RMHV2UNC, SMX3000RMLV2U, SMX3000RMLV2UNC
Specificationsbattoutvolt: 120
Battery Volt-Amp-Hour Capacity: 1200
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: 10
Operating Environment: 0 - 40 Degree Celcius
Operating Relative Humidity: 0 - 95%
Operating Elevation: 0 - 3000 meters
Storage Temperature: -15 - 45 Degree Celcius
Storage Relative Humidity: 0 - 95%
Storage Elevation: 0 - 15000 meters
Environmental Compliance: RoHS 7b Exemption, REACH: Contains No SVHCs
FeaturesHot-swappable batteries:
Ensures clean, uninterrupted power to protected equipment while batteries are being replaced
User-replaceable batteries:
Increases availability by allowing a trained user to perform upgrades and replacements of the batteries reducing Mean Time to Repair (MTTR)
Scalable runtime:
Allows additional run time to be quickly added as needed.
Intelligent battery management:
Maximizes battery performance, life, and reliability through intelligent, precision charging.
Rack/Tower convertible:
Protects the initial investment in the UPS when migrating from tower to rack-m
Dimensions26.26" x 17.01" x 3.35"
Weight124.25 lbs.
Shipping weight63.64 kg
Package size869 × 596 × 243 mm

Questions about this item

Which compatible UPS models does this 120 V external battery pack support?

It is designed for SMX2000RMLV2U, SMX2200RMHV2U, SMX2200RMLV2U, SMX3000RMHV2U, SMX3000RMHV2UNC, SMX3000RMLV2U and SMX3000RMLV2UNC units.

What runtime gain does the 1200 VAh capacity deliver in a live system?

The 1200 VAh rating extends battery backup time for the connected Smart-UPS, with actual minutes depending on the load placed on the UPS.

How does the 120 V DC output interface limit use in practice?

The pack supplies 120 V DC only to the listed Smart-UPS models, so it cannot power other voltages or non-compatible equipment.

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