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A sealed lead-acid battery cartridge for Xfinity 850VA 425W UPS

RefurbUPS

RefurbUPS Ultra Xfinity 850VA 425W UPS Replacement Battery Kit

SKU CH-5ZDK-VPFAG

Kit includes one 12 V 7 Ah SLA battery for 850 VA 425 W UPS model U12-40746

  • TypeKit/Package
  • Weight6
  • Reliable backup power with 850VA UPS compatibility
  • Consistent runtime from 12V 7A high-rate discharge battery
  • Ready-to-install kit includes comprehensive replacement instructions
  • Factory-fresh cells deliver dependable performance
  • Exact-fit cartridge for Xfinity U12-40746 UPS models

Compatible Replacement Battery Kit

This kit provides a direct replacement battery cartridge for the Xfinity 850VA 425W UPS model U12-40746. It contains one factory-fresh 12V7A high-rate discharge sealed lead-acid battery. The package includes comprehensive installation instructions. It is designed for users who need to restore backup power to this specific UPS unit.

Verify UPS Model Before Ordering

Confirm that your uninterruptible power supply is the Xfinity 850VA 425W with part number U12-40746. This kit fits only that model and is not universal across other UPS series. Check the existing battery label to ensure it matches the 12V7A specification. Installation requires opening the UPS enclosure and disconnecting the old battery terminals.

Sustained Load Behaviour

The high-rate discharge chemistry delivers stable voltage during extended mains failures rather than only short bursts. Sealed lead-acid construction maintains consistent output as the battery depletes under continuous load. Factory-fresh cells reduce the risk of premature capacity fade during prolonged discharge cycles. The kit restores the UPS to its original runtime capability for connected equipment.

Highlights

  • Reliable backup power with 850VA UPS compatibility
  • Consistent runtime from 12V 7A high-rate discharge battery
  • Ready-to-install kit includes comprehensive replacement instructions
  • Factory-fresh cells deliver dependable performance
  • Exact-fit cartridge for Xfinity U12-40746 UPS models

Specifications

BrandUltra
SeriesUltra Batteries
TypeKit/Package
Weight6

Questions about this item

What comes in the Ultra Xfinity 850VA 425W replacement battery kit?

The kit contains one factory-fresh 12V 7A high-rate discharge sealed lead-acid battery plus comprehensive installation instructions for the Xfinity U12-40746 UPS.

Which capacity version of this replacement kit should I choose for my Xfinity 850VA 425W UPS?

This single 12V 7A battery cartridge is the exact match for the Xfinity U12-40746 model rated at 850VA and 425W; no other capacity versions are offered for this unit.

What does the 850VA 425W rating mean when this battery is installed in my UPS?

The 850VA / 425W figures are the UPS output ratings that this 12V 7A battery is designed to support during a power outage.

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