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Two rectangular black battery cartridges side by side

PowerWarehouse

PowerWarehouse 2XRBC12SLA1221 UPS replacement battery 12V 2 pack

SKU CH-KNKY-1VYZY

12 V lead-acid cartridge pack replaces the APC SU3000RMTX136 UPS battery

  • Compatible withFits: APC SU3000RMTX136
  • Designed for APC SU3000RMTX136 UPS units
  • 12 V lead-acid cartridge #12 replaces original battery
  • Two-pack keeps spare cells ready for hot-swap
  • 100 % compatibility guaranteed with factory equipment

PowerWarehouse 12 V dual-pack for APC SU3000RMTX136

This two-pack supplies 12 V lead-acid cartridges built as direct replacements for the APC SU3000RMTX136 UPS. Each unit is guaranteed 100 % compatible with the original equipment so installation requires no wiring changes. The set restores backup power for rack-mounted servers and network gear that depend on this specific UPS model.

Sustained discharge behaviour

Under continuous load the sealed lead-acid chemistry delivers steady voltage until the cells reach their safe cutoff point. The 100 % compatibility guarantee means the internal resistance matches the UPS charging profile, preventing premature thermal shutdown during extended outages. Buyers who need longer runtime than a single cartridge provides should verify whether their UPS chassis accepts additional battery modules.

How it compares

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

Price $329.99
Pricier than about 90% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand namePowerWarehouse
Model name2XRBC12SLA1221
Compatibility
Compatible withFits: APC SU3000RMTX136

Questions about this item

How much heat does the 12 V cartridge generate during continuous UPS operation?

The sealed lead-acid cells produce only modest warmth under normal float charge; the APC SU3000RMTX136 chassis handles dissipation without extra cooling.

What existing hardware is required to install the 2-pack in the SU3000RMTX136?

You need the original APC SU3000RMTX136 UPS with its battery compartment and mounting rails; the cartridges slide straight in using the factory connectors.

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