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Two sealed 12 V lead-acid cartridges labelled RBC43 for APC SMT3000RMUS

PowerWarehouse

PowerWarehouse 2XRBC43SLA4310 UPS replacement battery 2-pack

SKU CH-1XJC-WJS3G

Two 12 V lead-acid cartridges replace RBC43 cells in APC SMT3000RMUS units

  • Compatible withFits: APC SMT3000RMUS
  • Compatible with APC SMT3000RMUS UPS units
  • 12 V lead-acid chemistry for reliable backup power
  • Two-battery cartridge #43 simplifies hot-swap replacement
  • 100 % compatibility guarantee matches original equipment specs

PowerWarehouse 2XRBC43SLA4310 12V Lead Acid 2-pack

This twin-pack delivers two 12-volt sealed lead-acid cartridges built to the exact dimensions of cartridge 43. It is a direct drop-in replacement for the APC SMT3000RMUS UPS, restoring full runtime without rewiring or firmware changes. Facilities managers and IT teams can swap both modules in minutes during a scheduled maintenance window.

Sustained discharge performance

Under continuous load the sealed cells maintain stable voltage until the UPS initiates its low-battery shutdown sequence, avoiding the voltage sag that can trip sensitive server gear. The absorbent glass mat construction resists stratification during long float periods, so capacity remains predictable across the full service life. Buyers who need hot-swappable modules for a different UPS chassis or higher ampere-hour ratings should verify compatibility before ordering.

How it compares

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

Price $511.99
Pricier than about 91% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand namePowerWarehouse
Model name2XRBC43SLA4310
Compatibility
Compatible withFits: APC SMT3000RMUS

Questions about this item

How much heat do two 12 V lead-acid cartridges add to a rack when the SMT3000RMUS runs continuously?

Each 12 V cartridge produces modest warmth under load; the sealed design vents minimal gas, so a standard rack airflow keeps temperatures normal.

What must already be in the rack for these cartridge #43 units to work?

An APC SMT3000RMUS UPS with the original battery tray installed; the two cartridges slide directly into that tray without extra hardware.

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