APC Replacement Battery Cartridge #18, Suitable For PS250I, PS450I, SC250RMI1U, SC450RMI1U | RBC18

APC Replacement Battery Cartridge 18 with 2 Year Warranty

The genuine APC Replacement Battery Cartridge (RBC) is tested and certified for 100% compatibility to the the specific APC UPS. This lead-acid RBC has a lifetime of three to five years which offers reliable support and extends the useful life of your UPS. The APC RBC comes fully assembled and ready for use. To see the compatible UPS list, please click ‘View Compatible UPS Models’button in ‘Get Support’ Section at APC.com.

Product or component type Replacement battery cartridge
Number of cables 1
Battery type Lead-acid battery
Provided equipment- All required connectors, Battery recycling guide, Reusable packaging,Installation guide
Number of battery free slots 0
Number of battery filled slots 0
Device mounting Stand alone battery stack
Battery voltage 12 V
Number of battery replacement quantity 1
Battery capacity 9 Ah
Ambient air temperature for operation 0…40 °C
Operating altitude 0…10000 ft
Relative humidity 0…95 %
Ambient air temperature for storage -15…45 °C
Storage altitude 0.00…15240.00 m
Storage Relative Humidity 0…95 %

Mounting mode- Not rack mountable
Compatible UPS Models- PS250I, PS450I, SC250RMI1U, SC450RMI1U

Product Last Updated: 12/09/2026

* Whilst we endevour to have the correct information on our products provided from the supplier/manufacturer errors do occur. If you would like to double check the information, please feel free to contact us and we will be more than happy to confirm information on the item prior to purchase. In the event that product information is incorrect due to information we received from our supplier or manufacturer, we do not take responsibility or be held liable for damage(s) or loss(s). We will work with you and do our best to make the best of a bad situation and work with our supplier(s) and/or manufacturer(s) to supply the correct information for the item purchased etc..