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Replacement battery kit for APC Smart-UPS 400, four 6V 4.5Ah units

RefurbUPS

RefurbUPS APC Smart-UPS 400 SU400-Slim ups replacement battery kit

SKU CH-MBM2-B05B6

Replacement battery kit with four 6 V 4.5 Ah cells for APC Smart-UPS 400 SU400-Slim, weighing 12 kg

  • Product typeBattery
  • Product weight12
  • Factory-fresh cells ensure reliable runtime
  • Four 6 V 4.5 Ah batteries deliver rated capacity
  • Kit replaces two APC RBC1 cartridges
  • 12 kg weight confirms robust lead-acid build

Compatible Battery Kit for APC Smart-UPS 400

This replacement kit provides a factory-fresh power source for the APC Smart-UPS 400 SU400-Slim uninterruptible power supply. It contains four 6V 4.5Ah batteries configured as two APC RBC1 compatible cartridges. The kit weighs 12 units and is ready for immediate installation.

Lead-Acid Chemistry Limits Runtime and Cycle Life

The sealed lead-acid cells deliver reliable backup but lose capacity after repeated deep discharges. Users needing longer runtime per outage or a higher number of discharge cycles will find this chemistry restrictive. The kit matches the original 400 VA rating only and cannot extend the unit's rated output.

How it compares

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

Price $23.99
Cheaper than about 66% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Product typeBattery

Questions about this item

Should I choose the four-battery kit or a different capacity for my SU400-Slim?

This kit contains four 6 V 4.5 Ah batteries, matching the original APC RBC1 specification for the Smart-UPS 400 SU400-Slim.

What does the 400 rating mean for actual runtime once the kit is installed?

The 400 VA rating of the UPS combined with the 4.5 Ah cells gives the factory-specified backup time for the Smart-UPS 400 SU400-Slim.

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