APC SMX039-2 Smart-UPS X 48V Battery Extension Cable
Best extension cable for expanding critical backup power runtime.
Extend the runtime of your APC Smart-UPS X system with the SMX039-2 Battery Extension Cable. This 4-foot, 48V cable facilitates the expansion of your UPS's backup power capacity by connecting to external battery stacks. Designed for durability and simple integration, it ensures continuous power protection for your critical equipment when you need it most. Its black, tower-mountable design makes it a practical addition to your power protection setup, offering increased operational uptime.
$142.68
Owner Satisfaction
4.5
/ 5
Category Rank
26
/ 141
#26 in UPS Accessories
Price vs Category Average
-78%
Below average
Voltage
48
/ V
Who it's for
- IT managers optimizing crowded server rack layouts
- System administrators requiring guaranteed hardware reliability
- Technicians needing fast and secure equipment deployment
Who should skip it
- Users managing mixed-brand or non-48V UPS hardware
- Budget-conscious buyers seeking affordable third-party alternatives
- Installers requiring custom cable lengths for unique setups
Performance breakdown
Integration Simplicity
Plug-and-play design makes expanding your battery capacity remarkably straightforward.
Build Durability
Robust construction ensures long-term reliability for critical power infrastructure.
Cable Reach
Four-foot length provides adequate flexibility for standard tower-based battery stacking.
System Compatibility
Engineered specifically for seamless communication with APC Smart-UPS systems.
Mounting Versatility
Optimized for tower configurations, though limited in rack-mount environments.
Power Reliability
Maintains consistent voltage delivery for uninterrupted critical equipment uptime.
Key Specs
Voltage
48V
Cable Length
4.0 feet
Weight
0.80 kg
Dimensions (H x W x D)
224 mm x 173 mm x 64 mm
Material
Plastic
Battery Mounting
Stand alone battery stack
Environmental Compliance
RoHS
Compatible UPS Series
APC Smart-UPS
Features
- Extends UPS runtime capacity
- Enables external battery expansion
- Simple integration for battery stacks
- 48V nominal voltage
- Durable black finish
- Tower mounting compatible
- RoHS compliant
What customers say
The sentiment centers on the cable's essential quality and reliable performance within the Smart UPS ecosystem. Consumers confirm this genuine APC accessory provides a perfect, hassle free fit, ensuring seamless integration and dependable power extension. While the cost is significant, users prioritize the peace of mind that comes from using manufacturer certified components, recognizing that reliability is paramount when managing critical power infrastructure. This focus on guaranteed function drives high satisfaction.
Know before you buy
This cable is designed to connect external battery packs to your APC Smart-UPS X system. It allows you to expand your total runtime by daisy-chaining additional battery stacks to your existing UPS unit.
The cable measures 4 feet in length. This provides enough slack to position your external battery stack conveniently next to or near your UPS tower.
No, this cable is specifically engineered for the APC Smart-UPS X series. It is not a universal cable, so verify that your specific UPS model supports external battery expansion before purchasing.
The cable is designed for simple, straightforward integration. It features a plug-and-play connection style that allows you to attach your battery stacks without complex wiring or specialized tools.
While the cable itself is flexible, it is specifically optimized for tower-mounted battery stacks. If you are running a rack-mount setup, ensure your battery configuration supports this specific cable length and connector type.
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