10000 Woodward Avenue
Woodridge, Illinois 60517
+1 773-869-1776
+1 (773) 869-1329
United States
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  • Up to 30% longer runtime than basic replacements
  • OEM certified premium batteries
  • Rugged, leakproof construction
  • Maintenance-free
  • Wide operating temperature range
  • 18-month limited warranty


These premium UPS replacement battery cartridges breathe new life into UPS systems suffering from expired or weak internal batteries. Each replacement battery cartridge is carefully screened and certified to meet or exceed original manufacturer specifications and ships ready for installation into your UPS system. Reusable packaging holds expired batteries for recycling center delivery. Compatible with a wide variety UPS brands and models. See the UPS replacement battery web page to confirm compatibility and quantity required.


  • Restores UPS runtime performance to its original runtime specifications
  • Reusable packaging contains expired batteries for recycling center delivery
  • Compatible with a variety of UPS brands

Package Includes

  • RBC51 UPS Replacement Battery Cartridge
  • Owner’s Manual
RoHS compliant


UPC Code037332118660
Brand CompatibilityCompatible with a variety of UPS Brands
Included Battery SetContains (1) 12V 9AH sealed lead acid battery with F2 (6.35 mm / 0.25 inch) connection terminals
Typical Battery Lifespan3 - 5 years, depending on host UPS operating conditions
Shipping Dimensions (hwd / in.)5.90 x 11.90 x 7.40
Shipping Weight (lbs.)8.00
Unit Dimensions (hwd / in.)1.900 x 4.000 x 5.500
Unit Weight (lbs.)5.8
Relative Humidity0 - 95% non-condensing
Operating Elevation0-10000 ft. (0-3000 m)
Storage Elevation (ft.)0 - 50,000
Product ComplianceRoHS
Product Warranty Period (U.S. & Canada)18-month limited warranty

Questions & Answers

Need help with your purchase?
We're always available to help with questions, including product selection, sizing, installation and product customization. Call us at +1 773-869-1776 or email