APC SUA750RMI2U UPS backup battery compatible replacement. Sigma SG-RBC22P supplies a complete 24V 9Ah AGM battery cartridge with two 12V batteries, tray and wiring as shown.
Match the exact SUA750RMI2U model and revision, existing cartridge, connector and tray dimensions before ordering. The UPS itself is not included.
APC SUA750RMI2U replacement specifications
| Listed UPS model | SUA750RMI2U |
|---|---|
| Sigma replacement reference | SG-RBC22P |
| Cartridge voltage | 24V |
| Cartridge capacity | 9Ah |
| Chemistry | Rechargeable sealed lead-acid (SLA), AGM |
| Package quantity | One complete cartridge |
| Internal batteries | Two 12V 9Ah batteries connected in series |
| Internal battery model | SG1290T2 |
| Internal battery terminals | T2/F2, 0.250 inch (6.35 mm) |
| Supplier-listed cartridge dimensions | 13.5 × 8.5 × 3 inches |
| Supplier-listed product weight | 12 lb; shipping weight may be higher |
Choosing the correct cartridge
Two series-connected 12V 9Ah batteries provide 24V at 9Ah. Check the tray, polarity, connectors and fuse arrangement against the installed assembly. Follow the UPS manufacturer’s replacement procedure; do not assume replacement while powered is permitted.
The 9Ah option has a higher rated capacity than the 7Ah version. Runtime depends on UPS load, cutoff voltage, temperature and battery condition; a fixed percentage increase is not guaranteed.
Internal battery documents
These documents describe the individual SG1290T2 battery, not the overall tray dimensions. The installed batteries lie on their sides as shown in the product photos.
Related batteries and ordering help
Browse APC UPS backup batteries. For matching help or volume pricing, email Sales@RocketDistributing.com with your SUA750RMI2U label, cartridge number, connector photos, quantity and delivery location.
APC is a trademark of Schneider Electric. This is an aftermarket compatible replacement supplied by Sigma Power Systems.