APC Smart-UPS X 120V External Battery Pack, 4U RM/Tower, Lead Acid Battery | SMX120BP

APC Smart-UPS X-Series External Battery Pack Rack/Tower 120V, 1200VAh, rackmount, 4U

Easily connect this external battery pack to an existing APC Smart-UPS X to instantly increase the amount of battery runtime to connected devices during a power outage. Please refer to your APC Smart-UPS X manual to confirm compatibility with this external battery back. The battery pack offers easy plug-and-play installation onto an operating APC Smart-UPS, ensuring power availability while runtime capacity is added. Through the APC Smart-UPS’ intelligent battery management and precision charging, the battery pack maintains the UPS system’s performance, reliability, and useful life. The APC battery pack provides scalable runtime to the APC Smart-UPS X, allowing multiple battery packs to be quickly added if the need arises. The battery pack operates equally in tower configuration, standing next to an APC Smart-UPS, or in rack-mount configuration, mounted below the UPS. Package Includes APC SMX120BP External Battery Pack, installation guide, and rack-mounting brackets.
Product or component type Battery
Number of rack unit 4U
Battery type Lead-acid battery
Number of battery blocks per string10
Device mounting Enclosed battery cartridge
Number of battery filled slots 0
Number of battery free slots 0
Number of battery replacement quantity 2
Battery voltage 120 V
Ambient air temperature for operation 0…40 °C
Relative humidity 0…95 %
Operating altitude 0…10000 ft
Ambient air temperature for storage -15…45 °C
Storage Relative Humidity 0…95 %
Storage altitude 0.00…15240.00 m

Mounting mode- Rack mounted
Replacement Battery -APCRBC143
Compatible Mounting- AP9625, AR201

Product Last Updated: 11/12/2025

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