APC Smart-UPS X 120V External Battery Pack SMX120BP
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Prices updated: 13 Oct 2026
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About this product
The APC SMX120BP is a 120V external battery pack for APC Smart-UPS X Rack/Tower systems, providing extended runtime for critical applications. It uses maintenance-free sealed lead-acid batteries in an enclosed battery cartridge with 10 battery blocks per string. Rack mounting brackets and an installation guide are included.
Specifications
- Battery output voltage
- 120 V
- Battery type
- Maintenance-free sealed lead-acid, suspended electrolyte (leakproof)
- Battery mounting
- Enclosed battery cartridge
- Battery blocks per string
- 10
- Expected battery life
- 3–5 years
- RBC quantity
- 2
Frequently asked questions
Is it compatible with Smart-UPS X 120V units?
It is designed as an external battery pack for APC Smart-UPS X 120V Rack/Tower systems. Confirm the battery voltage and connection method in your UPS manual before connecting.
Does the battery pack need maintenance?
It uses maintenance-free sealed lead-acid batteries, so no electrolyte top-up is needed. Follow the manual for storage, charging and replacing the battery cartridges.
