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Two sealed 12V lead-acid battery cartridges in black plastic housing

PowerWarehouse

PowerWarehouse 2XRBC4SLA412 UPS Replacement Battery 12V 2 Pack

SKU CH-NAPX-9FP33

Two 12 V sealed lead-acid cartridges replace the APC BK650S UPS battery pack

  • Compatible withFits: APC BK650S
  • Designed for APC BK650S UPS systems
  • 12 V lead-acid chemistry delivers reliable backup power
  • Two-battery cartridge #412 simplifies replacement
  • 100 % compatibility guaranteed with original equipment

Two-pack 12V UPS battery cartridge

This replacement cartridge contains two 12-volt sealed lead-acid units built to fit the APC BK650S uninterruptible power supply. It restores backup runtime for home-office or small-business workstations that rely on that specific UPS model. The pack is sold new and carries a one-year replacement guarantee from the manufacturer.

Passive thermal design keeps operation silent

The sealed cells dissipate heat through the cartridge casing without fans, so the UPS remains quiet during normal float charging and brief discharge cycles. Power draw is limited to the UPS internal charger current, adding negligible load to the protected circuit. No active cooling or extra ventilation is required beyond the UPS manufacturer's original clearances.

How it compares

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

Price $72.99
Pricier than about 71% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand namePowerWarehouse
Model name2XRBC4SLA412
Compatibility
Compatible withFits: APC BK650S

Questions about this item

How do I install the 12V lead-acid battery cartridge #4 into my APC BK650S UPS?

Power off and unplug the UPS, open the battery door, disconnect the old cartridge, insert the new 12V cartridge #4 matching the connector orientation, close the door, then power on and allow the UPS to charge for several hours.

When will the 12V lead-acid batteries in this 2-pack need replacement under normal use?

Typical service life is three to five years; plan replacement when runtime drops noticeably or the UPS signals a battery fault, and recycle the old 12V lead-acid cells according to local regulations.

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