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Two rectangular black sealed lead-acid batteries with silver terminals on top

BatteryJack inc.

BatteryJack inc. 12V 3.5AH SLA UPS Replacement Battery 2PK

SKU CH-Z1GK-C4JG9

Two 12 V 3.5 Ah AGM batteries replace RBC35 and compatible UPS cartridges with maintenance-free operation

  • AGM technology enables maintenance-free operation
  • 3 Ah capacity powers compatible UPS units
  • 100 % OEM replacement fits APC RBC35 and CyberPower models
  • Compact 5.28 x 2.64 x 2.4 inch case fits tight enclosures
  • Terminal spacing of 1.6 inches matches original connectors

12 V 3.5 Ah SLA two-pack

The BatteryJack inc. pack supplies two sealed lead-acid batteries rated at 12 volts and 3.5 ampere-hours each. They use AGM construction for maintenance-free operation and are built as direct replacements for compatible UPS units. The pair gives a spare on hand or allows a dual-battery swap in one service visit.

UPS owners needing a 3.5 Ah 12 V block

These cells suit owners of APC Back-UPS ES models such as BE325, BE350, BE350C, BE350ES, BE350G and BE350U plus CyberPower CPS300SL, CPS320SL, CPS325SL and similar units that specify a 12 V 3.5 Ah brick. They will not fit UPS cabinets that require a larger capacity block, a different terminal spacing or a 6 V module.

3.5 Ah capacity for typical desktop UPS loads

At 3.5 Ah the batteries support common desktop UPS runtimes of several minutes under moderate loads. They are not intended for extended runtime cabinets, high-draw server arrays or applications that demand 7 Ah or 9 Ah bricks. The 1.6 inch terminal spacing matches the listed APC and CyberPower cartridges.

Highlights

  • AGM technology enables maintenance-free operation
  • 3 Ah capacity powers compatible UPS units
  • 100 % OEM replacement fits APC RBC35 and CyberPower models
  • Compact 5.28 x 2.64 x 2.4 inch case fits tight enclosures
  • Terminal spacing of 1.6 inches matches original connectors

Specifications

No published specifications for this item yet.

Questions about this item

Which APC UPS models accept the RBC35 cartridge that this 12 V 3.5 Ah 2-pack replaces?

The pack is a direct replacement for the RBC35 cartridge used in APC Back-UPS ES models BE325-FR, BE350, BE350C, BE350ES, BE350G, BE350U and ES 325.

Will the 1.6-inch terminal spacing match the F1 connectors on my existing CyberPower CPS325SL?

Yes — the 1.6 inch distance between terminals lines up with the F1 faston tabs on CyberPower CPS300SL, CPS320SL, CPS325SL and 325SL units.

How can I confirm the batteries are delivering the rated 3.3 Ah capacity after installation?

Run a self-test from the UPS front panel or management software; a passed test and normal runtime during a simulated outage show the 3.3 Ah AGM cells are performing as specified.

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