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Rectangular sealed lead-acid battery cartridge in metal enclosure, grey finish, integrated handle

APC

APC RBC27 UPS Replacement Battery Cartridge #27 864 VAH

SKU CH-YHMG-1T6S5 MPN RBC27

A maintenance-free sealed lead-acid cartridge rated at 864 VAH, hot-swappable for compatible Smart-UPS RM 3U models

  • Product typeBattery
  • Compatible withSU2200RMXL3U, SU2200RMXLI3U, SU3000RMXL3U, SU3000RMXLI3U, SU
  • DetailsBattery Volt-Amp-Hour Capacity: 864 Battery Type: Maintenanc
  • Key featuresBattery Characteristics: Maintenance-free Battery Chemistry:
  • Product dimensions4.25 in × 6.5 in × 22.5 in
  • Product weight54 lb (24.5 kg)

Model RBC27

  • Hot-swappable cartridge enables replacement without powering down
  • 864 VAH capacity supports extended runtime for compatible UPS units
  • Maintenance-free sealed lead-acid design eliminates electrolyte checks
  • 3 to 5 year expected life reduces replacement frequency
  • Supplied with connectors, tray and recycling guide for straightforward installation

Replacement battery cartridge for APC Smart-UPS

The APC RBC27 is a maintenance-free sealed lead-acid battery cartridge rated at 864 VAH and 12V DC output. It arrives as a hot-swappable enclosed unit weighing 54.00 lbs with dimensions of 4.25" x 6.50" x 22.50". The package includes the cartridge, all required connectors, a metallic battery tray, installation guide and reusable packaging.

Suitable UPS models and installation limits

This cartridge fits the SU2200RMXL3U, SU2200RMXLI3U, SU3000RMXL3U, SU3000RMXLI3U, SU48R3XLBP and SU48RMXLBP3U. The SU48R3XLBP requires two RBC27 units, so a single cartridge will not restore runtime for that model. Buyers with other UPS models or who need a different voltage or form factor should look elsewhere.

Capacity determines runtime and compatibility

The single specification that decides fit is the 864 VAH capacity combined with the 12V DC output and the listed model compatibility. Expected service life is 3 to 5 years. Verify the UPS model number matches the list above before ordering.

How it compares

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

Price $457.99
Pricier than about 90% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand nameAPC
Model nameRBC27
Product typeBattery
Size & build
Product dimensions4.25 in × 6.5 in × 22.5 in
Product weight54 lb (24.5 kg)
Shipping weight26.76 kg
Package size737 × 311 × 279 mm
Compatibility
Compatible withSU2200RMXL3U, SU2200RMXLI3U, SU3000RMXL3U, SU3000RMXLI3U, SU48R3XLBP, SU48RMXLBP3U
In the box
In the boxAPC Replacement Battery Cartridge #27, All required connectors, Battery recycling guide, Installation guide, Metallic battery tray or enclosure, Reusable packaging

Other versions of this model

4 more in the same range

Questions about this item

How do I install the RBC27 cartridge in my SU2200RMXL3U and which step is often missed?

Slide the cartridge into the UPS until it locks, then connect the supplied cables to the cartridge terminals; the step often missed is securing the metallic tray screws before closing the front panel.

What maintenance or replacement will the RBC27 need during its 3 to 5 year life?

The sealed lead-acid cells are maintenance-free; plan to replace the entire cartridge once runtime drops below your load requirement, typically after 3 to 5 years.

At 864 VAH capacity, what limit appears first during a long power outage?

The 864 VAH rating determines total energy; under sustained load the battery voltage will reach its 12 V DC cutoff first, ending usable runtime.

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