UPS Replacement Battery Cartridge for select Tripp Lite, APC, Belkin, Best, Powerware, Liebert and other UPS

Model Number: RBC51

  • Up to 30% longer runtime than basic replacements
  • OEM certified premium batteries
  • Rugged, leakproof construction
  • Maintenance-free
  • Wide operating temperature range

Tripp Lite’s RBC51 premium UPS replacement battery cartridge breathes new life into UPS systems suffering from expired or weak internal batteries. Like every Tripp Lite battery cartridge, it is carefully screened and certified to meet or exceed original manufacturer specifications and ships ready for installation in your UPS system. Its reusable packaging holds expired batteries for recycling center delivery. The RBC51 is compatible with a wide variety of UPS systems, including select models from Tripp Lite, APC, Belkin, Best, Powerware, Liebert and more.

Key Features

  • 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

Typical Applications

  • Extends the operating life of older UPS systems
  • Restores or enhances runtimes of all UPS systems exhibiting reduced power failure runtime

Package Includes

  • RBC51 UPS Replacement Battery Cartridge
  • Owner’s Manual

General Info



Included Battery Set Includes 1 12V battery
Typical Battery Lifespan 3 - 5 years, depending on host UPS operating conditions


Shipping Dimensions (hwd / in.) 6 x 7.5 x 12
Shipping Dimensions (hwd / cm) 15.2 x 19.1 x 30.5
Shipping Weight (lbs.) 7
Shipping Weight (kg) 3.18
Unit Dimensions (hwd / in.) 3.6875 x 2.5 x 5.875
Unit Dimensions (hwd / cm) 9.4 x 6.4 x 14.9


Relative Humidity 0 - 95% non-condensing
Operating Elevation (ft.) 0 - 10,000
Storage Elevation (ft.) 0 - 50,000
Operating Elevation (m) 0-3000 m
Storage Elevation (m) 0 - 15,200 m


Product Warranty Period (U.S. & Canada) 18-month limited warranty
Product Warranty Period (International) 1-year limited warranty
Product Warranty Period (Mexico) 1-year limited warranty
Product Warranty Period (Puerto Rico) 1-year limited warranty

† Tripp Lite uses primary and third-party agencies to test its products for compliance with standards. See a list of Tripp Lite's testing agencies.

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Product Warranty

This product has a 18-month limited warranty. Get more information

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