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Rectangular black sealed lead-acid battery with two terminals on top

PowerWarehouse

PowerWarehouse LEADACIDSLA43-16 12V 5Ah UPS replacement battery

SKU CH-X98H-AB4CQ

12V 5Ah sealed lead-acid battery replaces APC RBC43 cartridge #43 in SUA3000RMJ2UBOS3 UPS units

  • Direct replacement for APC RBC43 cartridge #43
  • 12 V 5 Ah sealed lead-acid powers SUA3000RMJ2UBOS3
  • Maintenance-free SLA chemistry requires no watering
  • New PowerWarehouse LEADACIDSLA43-16 unit ready to install

Compatible UPS Replacement Battery

The PowerWarehouse LEADACIDSLA43-16 is a 12V 5Ah sealed lead-acid battery designed to replace the RBC43 cartridge in APC SUA3000RMJ2UBOS3 units. It arrives new and maintenance-free, ready for installation in compatible uninterruptible power supply systems.

Practical Limits of Lead-Acid Chemistry

Sealed lead-acid cells lose capacity over time and require periodic replacement to maintain runtime. They are heavier than lithium alternatives for the same energy storage and cannot be fast-charged without reducing service life. Buyers who need longer runtime per kilogram or faster recharge cycles should consider different chemistry options.

How it compares

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

Price $224.99
Pricier than about 87% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand namePowerWarehouse
Model nameLEADACIDSLA43-16

Questions about this item

How many 12 V 5 Ah batteries are inside the LEADACIDSLA43-16 cartridge?

The cartridge holds sixteen individual 12 V 5 Ah cells wired to suit the SUA3000RMJ2UBOS3 UPS.

What runtime can I expect from the 5 Ah cells in my SUA3000RMJ2UBOS3?

At full 3000 VA load the pack delivers roughly five to six minutes; lighter loads extend runtime proportionally.

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