APC SU420NET UPS backup battery compatible replacement. The SG-RBC2P supplied by Sigma Power Systems uses one SG1290T2 rechargeable 12V 9Ah AGM sealed lead-acid battery with T2/F2 terminals.
This listing is for the battery only. Reuse the existing UPS wires and connectors. Match the full SU420NET model designation, revision, battery label, terminal arrangement and available clearance before ordering. The UPS and replacement wiring are not included.
This is the 9Ah option in the RBC2 replacement family. The higher amp-hour rating does not guarantee a fixed increase in UPS runtime; runtime also depends on load, battery condition and the UPS cutoff voltage.
APC SU420NET replacement battery specifications
| Listed UPS reference | SU420NET |
|---|---|
| Supplier replacement reference | SG-RBC2P |
| Battery model | SG1290T2 |
| Nominal voltage | 12V |
| Rated capacity | 9Ah at the 20-hour rate |
| Chemistry | Rechargeable sealed lead-acid (SLA), AGM |
| Package quantity | One battery |
| Terminals | T2/F2, 0.250 inch (6.35 mm) tab width |
| Length × width | 151 × 65 mm (5.94 × 2.56 inches) |
| Battery case height | 94 mm (3.70 inches) |
| Overall height including terminals | 100 mm (3.94 inches) |
| Approximate battery weight | 2.5 kg (5.51 lb) per the linked battery specification; shipping weight is higher |
Fit and installation
The supplier lists SU420NET for this replacement. Check the existing battery dimensions, polarity and terminal width against the photos and drawing. Use the UPS manufacturer’s replacement procedure. Do not assume replacement is safe while the UPS is powered, and do not substitute a lithium-ion battery or charger.
Battery documents
The manufacturer drawing distinguishes the battery case height from the overall height including terminals. Allow clearance for the attached connectors.
Related batteries and ordering help
Browse APC UPS backup batteries. For matching help or volume pricing, email Sales@RocketDistributing.com with your SU420NET model label, current battery and connector photos, quantity and delivery location.
California Proposition 65 warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. See P65Warnings.ca.gov.
APC is a trademark of Schneider Electric. This is an aftermarket compatible replacement supplied by Sigma Power Systems.