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Rectangular black sealed battery with two top terminals

BatteryJack inc.

BatteryJack inc. 12V 3.3AH UPS Replacement Battery for APC Back-UPS ES 350

SKU CH-SHN2-JNJHB

A 12 V 3.3 Ah AGM replacement battery compatible with APC Back-UPS ES 350 and other UPS models

  • Maintenance-free AGM design ensures reliable UPS backup
  • 12 V 3.3 Ah capacity powers APC Back-UPS ES 350 models
  • Exact 1.6 inch terminal spacing matches original fit
  • Compact 5.28 x 2.64 x 2.4 inch size fits tight battery compartments
  • Expected 4 to 7 year service life reduces replacement frequency

Direct-fit replacement for APC Back-UPS ES 350

This 12 V 3.3 Ah sealed lead-acid battery uses AGM chemistry and fits the APC Back-UPS ES 350 series without modification. It arrives ready to install and requires no maintenance during its service life.

Capacity and expected service life

Rated at 3.3 Ah, the cell delivers enough reserve for typical desktop and networking loads during short outages. The manufacturer rates the design life at four to seven years under normal float conditions.

Terminal spacing and compatible models

Terminals are spaced 1.6 inches apart, matching the original RBC35 and RBC47 cartridges. The same battery also fits CyberPower CPS300SL, CPS320SL, CPS325SL and 325SL units as well as the Conext CNB325.

Highlights

  • Maintenance-free AGM design ensures reliable UPS backup
  • 12 V 3.3 Ah capacity powers APC Back-UPS ES 350 models
  • Exact 1.6 inch terminal spacing matches original fit
  • Compact 5.28 x 2.64 x 2.4 inch size fits tight battery compartments
  • Expected 4 to 7 year service life reduces replacement frequency

Specifications

No published specifications for this item yet.

Questions about this item

Will the 1.6 inch terminal spacing match the connectors on my APC Back-UPS ES 350?

Yes, the 1.6 inch distance between terminals matches the original APC Back-UPS ES 350 battery layout exactly.

How can I verify the 12V 3.3AH battery is holding charge after installation?

The UPS will run a self-test at startup; a steady green LED and normal runtime during a brief power pull confirm the battery is working.

Does the package include the wiring harness or just the 5.28 x 2.64 x 2.4 inch battery block?

Only the sealed AGM battery block is supplied; you reuse the existing harness and connectors from the old unit.

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