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Rectangular sealed lead-acid battery cartridge, dark grey plastic casing, two terminal posts on top

PowerWarehouse

PowerWarehouse LEADACIDSLA11-34 UPS replacement battery

SKU CH-6WKM-9AGR9

Maintenance-free lead-acid replacement cartridge for APC RBC11 UPS systems

  • Maintenance-free design eliminates fluid checks
  • Direct APC RBC11 cartridge replacement ensures compatibility
  • 11 V 34 Ah capacity supports extended runtime
  • New sealed lead-acid construction provides reliable backup

APC RBC11 compatible replacement

This sealed lead-acid battery replaces the APC RBC11 cartridge in compatible uninterruptible power supply units. It is designed for server rooms, network closets and small business environments that require continuous uptime during mains failures. The maintenance-free construction eliminates the need for electrolyte checks or top-ups. Install it directly into the existing battery bay without wiring modifications.

Thermals noise and power draw

The valve-regulated lead-acid chemistry operates silently because it has no moving parts or cooling fans. Heat output remains low during float charge and brief discharge cycles typical of UPS operation. Power draw is limited to the charger current supplied by the host UPS, so no additional circuit capacity is required. Buyers who need hot-swappable lithium modules or extended runtime beyond the original cartridge rating should consider other solutions.

Highlights

  • Maintenance-free design eliminates fluid checks
  • Direct APC RBC11 cartridge replacement ensures compatibility
  • 11 V 34 Ah capacity supports extended runtime
  • New sealed lead-acid construction provides reliable backup

Specifications

BrandPowerWarehouse
ModelLEADACIDSLA11-34

Questions about this item

How do I install the LEADACIDSLA11-34 cartridge into my APC UPS, and which step is often missed?

Power off the UPS, open the battery door, disconnect the old cartridge, connect the new LEADACIDSLA11-34 leads matching polarity, secure it in the bay, close the door, then run the UPS self-test so the firmware recognises the fresh cells.

What maintenance or replacement will the LEADACIDSLA11-34 need over its service life?

The valve-regulated lead-acid cells are maintenance-free; plan to replace the whole cartridge again after three to five years or when the UPS reports a battery fault.

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