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Rectangular black sealed lead-acid battery with terminals on top

PowerWarehouse

PowerWarehouse RBC45-PW laptop battery BE350

SKU CH-FW6Q-S49N9

Replacement sealed lead-acid battery cartridge for APC BE350 UPS units

  • CompatibilityBE350
  • Dimension2.94" L x 3.90" W x 4.40" H
  • Weight3.75 LBS
  • Ready for BE350 UPS units with direct cartridge replacement
  • Leak-proof sealed lead-acid design keeps equipment safe
  • Maintenance-free operation eliminates fluid checks
  • Compact 2.94" x 3.90" x 4.40" footprint fits existing bay
  • 75 lb weight matches original handling expectations

Purpose-built replacement

The PowerWarehouse RBC45-PW is a new sealed lead-acid battery built to fit the BE350 unit. It serves owners who need a direct swap for the original cartridge without modifying the chassis. The maintenance-free design eliminates the risk of leaks during handling or operation.

Maintenance-free advantage

The sealed construction means no electrolyte checks or top-ups are required after installation. Users simply remove the spent cartridge, insert this unit and restore backup power. The leak-proof casing protects surrounding equipment from acid damage during transport or long-term deployment.

Form-factor constraint

Physical dimensions of 2.94 L x 3.90 W x 4.40 H inches and a weight of 3.75 LBS fix the battery to compartments that match the BE350 footprint. Builders whose enclosures differ by even a few millimetres cannot use this cartridge. The 18 month warranty covers the unit only when installed in the listed compatible model.

Highlights

  • Ready for BE350 UPS units with direct cartridge replacement
  • Leak-proof sealed lead-acid design keeps equipment safe
  • Maintenance-free operation eliminates fluid checks
  • Compact 2.94" x 3.90" x 4.40" footprint fits existing bay
  • 75 lb weight matches original handling expectations

Specifications

BrandPowerwarehouse
ModelRBC45-PW
Part NumberRBC45-PW
CompatibilityBE350
Dimension2.94" L x 3.90" W x 4.40" H
Weight3.75 LBS

Questions about this item

Will the sealed lead-acid cells in the RBC45-PW ever need topping up with water?

No, the battery is maintenance-free and sealed so it never requires water or electrolyte checks.

What limits runtime when the BE350 runs on this battery during a long outage?

The 18-month design life is the first limit; after that period capacity drops and the pack should be replaced.

Does the RBC45-PW get hot or make noise while the UPS runs all day on battery?

Sealed lead-acid chemistry produces no fan noise and only slight warmth during normal discharge.

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