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Two black rectangular 12V lead-acid batteries side by side

PowerWarehouse

PowerWarehouse 2XRBC3SLA34 12V Lead Acid Battery Cartridge #3 2 Pack UPS Replacement Battery

SKU CH-Q30J-6HJ53

Two 12 V lead-acid cartridges replace the original batteries in an APC BK600 UPS

  • Compatible withFits: APC BK600
  • Direct replacement for APC BK600 UPS
  • 12 V lead-acid chemistry delivers reliable backup
  • Two cartridges included for complete swap
  • 100 % compatibility guaranteed with original equipment

APC BK600 Compatible Cartridge

This two-pack of 12V lead-acid cartridges replaces the original RBC3 battery set inside APC BK600 uninterruptible power supplies. Each cartridge matches the factory form factor and terminal layout so installation requires no wiring changes. The pair restores full runtime to the UPS after the original cells have aged.

12V Lead-Acid Chemistry

The sealed lead-acid design delivers the voltage and discharge profile the BK600 charging circuit expects, keeping the unit's self-test and runtime calculations accurate. Buyers needing lithium-based chemistry or a different nominal voltage will find this pack unsuitable.

How it compares

Measured against everything we stock in UPS Replacement Batteries, at today’s prices. Recalculated every night.

Price $65.99
Pricier than about 69% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand namePowerWarehouse
Model name2XRBC3SLA34
Compatibility
Compatible withFits: APC BK600

Questions about this item

What does the 12 V rating mean once the cartridge is installed in my UPS?

The 12 V rating matches the voltage the APC BK600 expects, so the cartridge delivers the correct potential difference for the inverter to produce mains-like output during a power cut.

How does the cartridge #3 interface with the APC BK600 and what does that limit?

Cartridge #3 uses the proprietary connector and form factor keyed for the BK600, which caps compatibility to that model and prevents use in other UPS units.

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