APC SMX039-2 Battery Extension Cable — 48V Smart-UPS X

The APC Smart-UPS X Battery Extension Cable 48V (SMX039-2) is a purpose-built connectivity solution designed to extend battery runtime for compatible APC Smart-UPS X series units. This official APC accessory enables seamless integration of external battery packs to your existing UPS infrastructure, providing critical extended backup power for network equipment, servers, and essential systems during power outages. Built to APC’s exacting standards, this 48V extension cable ensures reliable power delivery and maintains the intelligent battery management features that Smart-UPS X systems are known for.

• 48V DC connectivity engineered specifically for Smart-UPS X battery expansion
• Professional-grade construction ensures safe, reliable power transmission between UPS and battery modules
• Plug-and-play installation with no complex configuration required
• Compatible with Smart-UPS X series for straightforward runtime expansion

For IT professionals and network administrators running critical UniFi infrastructure or other sensitive equipment, this extension cable represents a practical investment in uptime assurance. By connecting external battery packs to your Smart-UPS X system, you can significantly extend backup runtime to keep switches, gateways, controllers, and other essential devices operational through extended outages. The cable’s robust design and APC quality ensure your expanded battery system performs reliably when you need it most, making it an essential component for comprehensive power protection strategies in home labs, small business networks, and professional installations.