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Rectangular black sealed lead-acid battery with two top terminals

BatteryJack inc.

BatteryJack inc. BP3.6-12 12V 3.3Ah UPS Replacement Battery

SKU CH-AD8C-9ZA38

12 V 3.3 Ah AGM battery replaces APC RBC35 and CyberPower cartridges in UPS units

  • Maintenance-free AGM design eliminates routine upkeep
  • 12 V 3.3 Ah capacity powers compatible UPS units
  • 100 % OEM replacement fits APC RBC35 and RBC47 cartridges
  • Compact 5.28 × 2.64 × 2.4 in size suits tight installations
  • Expected 4–7 year service life supports long-term reliability

Direct OEM Replacement

The BP3.6-12 is a 12V 3.3Ah sealed lead-acid AGM battery built as a 100% OEM replacement for compatible UPS units. It uses advanced AGM technology for maintenance-free operation and stable quality. The compact design fits directly into existing battery compartments without modification. Expected service life ranges from four to seven years under normal conditions.

Pre-Wired Cartridge Fit

The battery matches the physical footprint and terminal spacing of 1.6 inches required by APC RBC35 and RBC47 cartridges. This eliminates the need for rewiring or adapter cables during installation. Users can swap the cell directly into supported Back-UPS ES models such as BE325-FR, BE350, BE350C, BE350ES, BE350G, BE350U and ES 325 units. CyberPower CPS300SL, CPS320SL, CPS325SL and 325SL models are also supported.

For UPS Battery Refresh

This unit suits administrators refreshing APC or CyberPower UPS units listed in the compatibility data. It also serves emergency lighting, fire alarm, security and telecommunication backup applications. Buyers needing higher capacity than 3.3Ah or a different terminal layout should look elsewhere. Systems requiring lithium chemistry or hot-swap trays not designed for SLA dimensions are not a match.

Highlights

  • Maintenance-free AGM design eliminates routine upkeep
  • 12 V 3.3 Ah capacity powers compatible UPS units
  • 100 % OEM replacement fits APC RBC35 and RBC47 cartridges
  • Compact 5.28 × 2.64 × 2.4 in size suits tight installations
  • Expected 4–7 year service life supports long-term reliability

Specifications

No published specifications for this item yet.

Questions about this item

How long before the 12V 3.3Ah AGM battery needs replacement?

The expected service life is 4 to 7 years under normal standby use.

What limits continuous discharge of the 3.3Ah pack?

Capacity and internal resistance restrict sustained high-current output before voltage drops.

Does the sealed 12V unit generate noticeable heat or noise during all-day float charging?

AGM chemistry is maintenance-free and produces no audible noise; only minimal warmth occurs during float charge.

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