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Single 12V 12A battery cartridge in plain housing

RefurbUPS

RefurbUPS APC Back-UPS 650 BK650MUS Compatible Replacement Battery Kit 12V12A

SKU CH-K4CX-0TRNH

A 12 V 12 Ah replacement battery kit restores runtime to APC Back-UPS 650 units and weighs 10

  • TypeBattery
  • Weight10
  • Factory-fresh cells deliver reliable backup power for APC Back-UPS 650
  • 12 V 12 A capacity matches original APC RBC4 specifications
  • Single 10 lb cartridge installs quickly without tools
  • New condition ensures full service life from first charge

Compatible Battery Kit for BK650MUS

This replacement battery kit is designed for the APC Back-UPS 650 model BK650MUS. It provides a factory-fresh 12V12A battery cartridge to restore backup power capability. The kit suits home-office users and small-business operators who need to refresh an existing UPS unit quickly.

Single 12V12A Cartridge Installation

The package contains one 12V12A battery weighing 10 units and fits directly into the UPS battery compartment without extra wiring. It frees the UPS to resume protecting connected electronics during outages. Buyers needing extended runtime or multiple battery modules should consider other solutions.

Highlights

  • Factory-fresh cells deliver reliable backup power for APC Back-UPS 650
  • 12 V 12 A capacity matches original APC RBC4 specifications
  • Single 10 lb cartridge installs quickly without tools
  • New condition ensures full service life from first charge

Specifications

TypeBattery
Weight10

Questions about this item

How long will the 12 V 12 Ah battery sustain a load on the BK650MUS before it reaches its capacity limit?

The 12 Ah rating indicates the total charge the cell can deliver; actual runtime depends on the connected load and the UPS inverter efficiency.

Does the replacement kit generate additional heat or audible noise once the UPS runs continuously all day?

The sealed lead-acid cell operates silently and its heat output is negligible compared with the UPS electronics; no extra cooling is required.

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