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Rectangular charcoal sealed lead-acid battery cartridge, 7.75 by 5.88 by 2.50 inches, 11.73 lbs

APC

APC RBC33 UPS Replacement Battery 12V 108W

SKU CH-30TJ-SR8BB MPN RBC33

Maintenance-free 12 V 108 W sealed lead-acid cartridge fits APC Back-UPS 1000 and 1500 models with a 3–5 year design life

  • Product typeBattery
  • Compatible withRBC33, APC
  • DetailsBattery Type: Maintenance-free sealed Lead-Acid battery with
  • Key featuresRBC33, 1051200 minutes, 1 Year Warranty, 1, lead acid, 12 V,
  • Product dimensions7.75 in × 5.88 in × 2.5 in
  • Product weight11.73 lb (5.32 kg)

Model RBC33

  • Maintenance-free sealed lead-acid design prevents leaks
  • 12 V 108 W capacity powers compatible UPS units
  • Fits APC Back-UPS models including BT1500 and BR1500
  • Enclosed cartridge with connectors enables straightforward installation
  • Expected service life of 3 to 5 years

Drop-in 12 V 108 W cartridge for Back-UPS 1500

The RBC33 is a sealed lead-acid battery cartridge designed to replace the internal pack in APC Back-UPS units such as the BT1500, BR1500 and BX1500. It arrives fully assembled with the required connectors and a recycling guide so the swap can be completed without tools. Compatible UPS models also include the SC1000 and SN1000 series.

Three-to-five-year service life under continuous

The maintenance-free chemistry is rated for three to five years of standby operation at typical room temperature. Each cartridge contains two 12 V blocks wired in series to deliver the 108 W capacity the UPS expects during an outage. Runtime scales with the connected load, so a fully charged pack supports the attached equipment until mains power returns or the battery reaches its low-voltage cutoff.

Leak-proof sealed construction keeps heat

The suspended-electrolyte design prevents spills even if the cartridge is tilted during installation. Because the battery sits inside the UPS enclosure, it relies on the unit’s existing airflow; no additional fan noise is introduced. Power draw during recharge follows the UPS charger profile, and the sealed cells generate only modest warmth during normal float charging.

How it compares

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

Price $115.99
Pricier than about 79% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand nameAPC
Model nameRBC33
Part numberRBC33
Product typeBattery
Size & build
Product dimensions7.75 in × 5.88 in × 2.5 in
Product weight11.73 lb (5.32 kg)
Shipping weight5.90 kg
Package size292 × 229 × 108 mm
Compatibility
Compatible withRBC33, APC
In the box
In the boxAll required connectors, Battery recycling guide, Installation guide, Reusable packaging

Questions about this item

Does the RBC33 generate noticeable heat or noise during continuous operation?

The sealed lead-acid design runs silently and produces minimal heat under normal UPS charging cycles.

What existing UPS models must I already own for the RBC33 to fit and connect?

It is a direct replacement cartridge for APC Back-UPS units BT1500, BT1500BP, BR1500, BX1500, SC1000 and SN1000.

Will the RBC33 work alongside the original battery electronics in an older BR1500 unit?

Yes, the cartridge matches the 12 V 108 W specification and uses the same enclosed form factor expected by those models.

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