APC SU1250RM UPS backup battery compatible replacement. Sigma SG-RBC7HR is an AGM sealed lead-acid replacement supplied for the SU1250RM. One complete 24V 18Ah cartridge is included.
Match the full UPS model and revision, existing cartridge label, connector, wiring and fuse arrangement before ordering. The source lists SU1250RM with the RBC7HR family. The UPS itself is not included.
This is the high-rate version. The supplier lists 18Ah per module and links the RG1218-70HR technical reference below. Compare the discharge tables at your intended load rather than assuming a fixed runtime advantage.
APC SU1250RM replacement specifications
| Listed equipment or cartridge reference | SU1250RM |
|---|---|
| Sigma replacement reference | SG-RBC7HR |
| Package contents | One complete 24V 18Ah cartridge |
| Module voltage | 24V |
| Capacity per module | 18Ah, supplier-listed |
| Chemistry | Rechargeable sealed lead-acid (SLA), AGM |
| Internal battery quantity | 2 batteries total; two series-connected batteries per module |
| Dimensions per module | 7.13 × 6.1 × 7.4 inches |
| Connection | Compare connectors, fuse and wiring with the existing assembly |
| Supplier-linked battery technical reference | RG1218-70HR |
| APC cartridge replacement reference | RBC7 / APCRBC7 |
Installation and compatibility
Compare all connections and dimensions against the installed battery assembly and your UPS documentation. A shared base battery, voltage or cartridge family alone is not a complete fit check. Follow the UPS manufacturer’s replacement procedure and do not assume the battery can be replaced while equipment is powered.
Internal battery documents
The supplier links the following RG1218-70HR technical documents for this high-rate assembly. They do not describe the overall cartridge dimensions or the wiring configuration of your UPS.
Related batteries and ordering help
Browse APC UPS backup batteries. Email Sales@RocketDistributing.com with your SU1250RM label, cartridge number, connector photos, quantity and delivery location for matching help or volume pricing.
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.