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Rectangular black sealed battery with two terminals on top

PowerStar

PowerStar 12V 3.3AH SLA/AGM Battery for APC Back-UPS ES 350

SKU CH-RJJN-86ZEK

12V 3.3AH AGM replacement battery fits APC Back-UPS ES 350 and compatible UPS models

  • Direct OEM fit for APC Back-UPS ES 350
  • 100 % OEM replacement with 3.3 AH capacity
  • Maintenance-free AGM design lasts 4-7 years
  • Compact 5.28 × 2.64 × 2.4 in size fits tight bays
  • Terminal spacing 1.6 in matches original connectors

Direct OEM Replacement

This 12V 3.3AH sealed lead-acid battery uses AGM technology for maintenance-free operation. It fits the APC Back-UPS ES 350 and compatible models including BE325-FR, BE350, BE350C, BE350ES, BE350G, BE350U, ES 325, Cyber Power 325SL, CPS300SL, CPS320SL, CPS325SL and Conext CNB325.

Replaces RBC35 and RBC47 Cartridges

The battery replaces APC RBC35 and RBC47 cartridges when runtime has dropped or the unit fails self-test. Expected service life is four to seven years depending on temperature and discharge cycles. Buyers who need extended runtime beyond the original 3.3AH capacity should look for higher-capacity alternatives.

Compact Design for UPS Enclosures

Dimensions are 5.28 inches long, 2.64 inches wide and 2.4 inches high with 1.6 inches between terminals. The compact form factor fits standard UPS battery compartments without modification. It supports emergency lighting, fire alarm, security, telecommunication and DC power supply applications where a 12V AGM block is specified.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $18.99
Pricier than about 75% of the 10,440 comparable items (median $10.99).

Specifications

No published specifications for this item yet.

Questions about this item

What are the exact dimensions and terminal spacing I need to match in my APC Back-UPS ES 350?

The battery measures 5.28 inches long, 2.64 inches wide, 2.4 inches high with 1.6 inches between terminals.

How do I install this SLA/AGM battery and which step do people skip?

Disconnect power, open the battery door, unplug the old pack, connect red to red and black to black on the new unit, then close the door — many forget to tighten both terminal bolts.

When will this 3.3AH AGM cell need replacement in float service?

The manufacturer rates the service life at four to seven years; in continuous float service plan to swap it at the four-year mark.

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