We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular black sealed lead-acid battery cartridge labelled RBC43

PowerWarehouse

PowerWarehouse LEADACIDSLA43-18 ups replacement battery 12V 5Ah for APC SUA3000RMUS RBC43

SKU CH-Z99F-JSRAC

12 V 5 Ah sealed lead-acid cartridge replaces RBC43 in APC SUA3000RMUS units

  • 12 V 5 Ah capacity keeps SUA3000RMUS running during outages
  • Maintenance-free lead-acid design eliminates water checks
  • Direct RBC43 cartridge fit simplifies installation
  • Brand-new PowerWarehouse unit ensures reliable backup power

12 V 5 Ah UPS replacement battery

The PowerWarehouse LEADACIDSLA43-18 is a maintenance-free sealed lead-acid cartridge designed for the APC SUA3000RMUS uninterruptible power supply. It restores runtime for critical servers and network gear when the original cells reach end of life.

Lead-acid chemistry limits

Sealed lead-acid technology provides reliable standby power but has lower energy density than newer chemistries, so runtime per kilogram is modest. The cartridge fits only the specified APC model and cannot be used in units requiring different voltages, capacities or form factors.

How it compares

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

Price $231.99
Pricier than about 87% of the 3,915 comparable items (median $39.99).

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand namePowerWarehouse
Model nameLEADACIDSLA43-18

Questions about this item

How do I know if this 12V 5Ah cartridge fits my APC SUA3000RMUS?

This PowerWarehouse LEADACIDSLA43-18 is built as a direct replacement for the RBC43 cartridge used in the APC SUA3000RMUS, matching the 12V 5Ah specification.

What runtime can I expect from the 5Ah rating in a real UPS?

The 5Ah capacity supplies the same ampere-hour reserve as the original RBC43 cartridge, so runtime under load will match the original battery performance.

More in UPS Replacement Batteries

Similar items