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Black rectangular sealed lead-acid battery cartridge weighing 11.32 lbs

Battery Technology Inc.

Battery Technology Inc. SLA33-BTI UPS Replacement Battery

SKU CH-APDX-KXCZ8 MPN SLA33-BTI

12 V sealed lead-acid cartridge replaces APC RBC33 in BR1500, BX1500 and SC1000 UPS units

  • Product typeBattery
  • Compatible withBR1500, BX1500, SC1000, RBC33
  • DetailsColor: Black Volts: 12 V Cells: 2 A: 9A Chemistry: Sealed Le
  • Product weight11.32 lb (5.13 kg)
  • Compatible with APC BR1500, BX1500, SC1000 units
  • Direct replacement for APC RBC33 cartridge
  • 12V sealed lead-acid chemistry ensures reliable backup
  • Two-cell 9A design delivers consistent power output
  • Weighs 11.32 lbs for straightforward installation

Direct UPS Battery Replacement

This sealed lead-acid cartridge restores runtime to compatible APC uninterruptible power supplies. It delivers 12 volts and 9 amps from two cells in a black housing. The unit weighs 11.32 lbs and arrives new, ready for immediate installation.

Fits BR1500 BX1500 SC1000 Units

The cartridge slides into the existing battery bay without wiring changes or firmware updates. It frees the UPS to resume full backup protection for connected equipment. No additional mounting hardware or external chargers are required for the swap.

Replaces APC RBC33 Cartridge

The jump is worth it when the original battery no longer holds charge or self-test alarms sound. It is not for users needing longer runtime than the original specification or for UPS models outside the listed compatibility.

How it compares

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

Price $68.99
Pricier than about 70% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand nameBTI
Model nameSLA33-BTI
Product typeBattery
Size & build
Product weight11.32 lb (5.13 kg)
Shipping weight6.80 kg
Package size262 × 226 × 165 mm
Compatibility
Compatible withBR1500, BX1500, SC1000, RBC33

Questions about this item

How long can the 12V 9A sealed lead-acid cells sustain full load before voltage drops?

The 12-volt, 9-amp-hour sealed lead-acid chemistry delivers its rated capacity until the end-of-discharge voltage is reached, which varies with load and temperature.

Does the cartridge generate noticeable heat or fan noise during continuous charging?

As a passive sealed lead-acid cartridge with no moving parts, it produces no fan noise and only minimal warmth during normal float charging.

Which UPS models must I already own for this RBC33-compatible cartridge to fit?

It is designed as a direct replacement for APC BR1500, BX1500 and SC1000 units that use the RBC33 battery cartridge.

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