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Two black rectangular 12V lead-acid battery cartridges side by side

PowerWarehouse

PowerWarehouse 2XRBC43SLA4326 12V Lead Acid Battery Cartridge #43 2 Pack UPS Replacement Battery

SKU CH-ZJ9T-6TSB9

Two 12 V lead-acid cartridges (#43) that replace the battery in an APC SUA3000RMI2U UPS

  • Compatible withFits: APC SUA3000RMI2U
  • Compatible with APC SUA3000RMI2U UPS
  • 12V lead-acid chemistry delivers reliable backup power
  • Two-pack cartridge #43 simplifies full battery replacement
  • 100% compatibility guaranteed for original equipment fit

PowerWarehouse 12V Lead Acid Battery Cartridge #43

This replacement cartridge fits the APC SUA3000RMI2U uninterruptible power supply. It is supplied as a two-pack and is guaranteed to be 100% compatible with the original equipment. The product is new and carries a one-year replacement warranty. It is not suited for users needing a different voltage or cartridge number.

Thermals noise and power draw in normal use

The sealed lead-acid design operates without fans, so it produces no audible noise during standby or discharge. Heat output is minimal under normal float charging conditions. The battery draws power only during recharge cycles after an outage. No active cooling or thermal management is required.

How it compares

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

Price $458.99
Pricier than about 90% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand namePowerWarehouse
Model name2XRBC43SLA4326
Compatibility
Compatible withFits: APC SUA3000RMI2U

Questions about this item

How do I install the two 12V cartridges into my APC SUA3000RMI2U UPS, and what step is often missed?

Power down the UPS, open the front battery door, slide out the old cartridge, insert the new pair matching the polarity markings, then close the door and run the self-test to reset the battery timer — skipping the self-test is the step most users forget.

When will these lead-acid cartridges need replacement, and what indicates end of life?

Expect three to five years of service; the UPS will signal replacement when runtime drops below the 3000 VA load rating or when the self-test fails, at which point both cartridges should be swapped together.

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