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A single 12V 7A sealed lead-acid battery in a plastic housing

RefurbUPS

RefurbUPS OMNISMART300 UPS Replacement Battery 12V 7A RBC51 Compatible

SKU CH-NMMK-VZ009

A 12 V 7 Ah battery cartridge replaces the RBC51 in the OMNISMART300 UPS

  • TypeBattery
  • Weight6
  • Factory-fresh power backup for critical systems
  • 12V 7A capacity matches original UPS specifications
  • Direct RBC51 compatible fit for OMNISMART300 units
  • Single cartridge design enables quick user installation

Compatible Replacement Battery for OMNISMART300 UPS

This 12V 7A battery cartridge is designed as a direct replacement for the Tripp Lite OMNISMART300 UPS and matches the RBC51 form factor. It arrives factory fresh and ready for immediate installation to restore backup power.

Replaces an exhausted original RBC51 cartridge

Swap this kit in when the existing battery no longer holds a charge or self-test warnings appear. It is not suited for UPS units that require a different voltage, capacity or physical layout.

Highlights

  • Factory-fresh power backup for critical systems
  • 12V 7A capacity matches original UPS specifications
  • Direct RBC51 compatible fit for OMNISMART300 units
  • Single cartridge design enables quick user installation

Specifications

TypeBattery
Weight6

Questions about this item

Does the 12 V 7 A battery cartridge match the original dimensions for the OMNISMART300 UPS?

The cartridge contains one 12 V 7 A battery built to the same form factor as the original RBC51 kit, so it fits the OMNISMART300 battery compartment without modification.

What is the correct order for connecting the two leads when installing the replacement cartridge?

Attach the red lead to the positive terminal first, then the black lead to the negative terminal; reversing the sequence can cause a short across the new 12 V 7 A cells.

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