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RefurbUPS APC Smart-UPS 400 replacement battery kit with four 6V 4.5A batteries

RefurbUPS

RefurbUPS APC Smart-UPS 400 SU400 replacement battery kit

SKU CH-DJP5-FY0KR

Compatible replacement battery kit for APC Smart-UPS 400, containing four 6 V 4.5 Ah cells

  • Product typeBattery
  • Product weight12
  • Factory-fresh cells ensure reliable runtime
  • Four 6 V 4.5 Ah batteries match original specs
  • Kit replaces two APC RBC1 cartridges in one pack
  • Compatible with APC Smart-UPS 400 SU400 units

Factory Fresh Battery Kit for Smart-UPS 400

This kit supplies four 6 V 4.5 Ah batteries that match the APC SU400 form factor. It is designed for administrators who need a drop-in replacement to restore runtime on an existing Smart-UPS 400 unit. The cartridge arrives new and ready for immediate installation.

Replaces Worn Original Cartridges

The kit replaces depleted APC RBC1 cartridges when the UPS can no longer hold its rated load. The upgrade is worth it when battery self-tests fail or runtime has dropped below acceptable levels for connected servers. It is not for users who require extended runtime beyond the original specification or who need a higher-capacity UPS platform.

How it compares

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

Price $25.99
Cheaper than about 64% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Product typeBattery

Questions about this item

How do the four 6 V 4.5 Ah cells mount inside the Smart-UPS 400 chassis?

The kit supplies four 6 V 4.5 Ah batteries that sit in the original battery compartment; they are the same physical size as the factory pack so no chassis modification is needed.

What is the correct wiring order when installing the replacement cells?

Connect the four cells in series positive-to-negative using the supplied jumpers, then attach the UPS harness to the two end terminals; the polarity markings on the tray show the proper orientation.

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