We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular sealed lead-acid battery, black plastic casing, two terminals on top, compact size

BatteryJack inc.

BatteryJack inc. 12V 3.3Ah UPS Replacement Battery for APC BE350U RBC35

SKU CH-VQEQ-C52ZN

A 12 V 3.3 Ah AGM battery that fits APC BE350U and RBC35 UPS units, plus CyberPower and Conext models listed in the compatibility data

  • Maintenance-free AGM design eliminates fluid checks
  • 3 Ah capacity powers APC BE350U and compatible UPS units
  • 100 % OEM-compatible fit for RBC35 cartridge replacement
  • Compact 5.28 × 2.64 × 2.4 in dimensions suit tight enclosures
  • Expected 4-7 year service life under normal use

Direct OEM replacement

The PowerStar 12V 3.3Ah SLA/AGM battery is a 100% OEM replacement for the APC RBC35 cartridge. It fits the BE350U and listed BE325, BE350, BE350C, BE350ES, BE350G, ES 325 and RBC47 models. It also matches CyberPower 325SL, CPS300SL, CPS320SL, CPS325SL and Conext CNB325 units. Maintenance-free AGM chemistry means no fluid checks or top-ups.

Capacity and expected service life

Rated at 3.3Ah, the cell delivers the runtime the original UPS was designed around for desktop loads, networking gear and security panels. The manufacturer cites a 4-7 year design life under normal float conditions. Capacity will gradually decline with age, temperature cycling and deep discharges, so plan replacement before critical runtime drops below your minimum window.

Physical fit and terminal layout

The case measures 5.28 x 2.64 x 2.4 inches with 1.6 inch terminal spacing, matching the RBC35 footprint exactly. Verify the UPS chassis can accept these dimensions before ordering, as some compact models use a different cartridge. The battery uses standard F2 faston tabs; no adapters or soldering are required for the listed APC and CyberPower units.

Highlights

  • Maintenance-free AGM design eliminates fluid checks
  • 3 Ah capacity powers APC BE350U and compatible UPS units
  • 100 % OEM-compatible fit for RBC35 cartridge replacement
  • Compact 5.28 × 2.64 × 2.4 in dimensions suit tight enclosures
  • Expected 4-7 year service life under normal use

Specifications

No published specifications for this item yet.

Questions about this item

Will the 12V 3.3Ah battery fit the same terminal spacing as the original RBC35 in my APC BE350U?

Yes, the 1.6-inch terminal distance matches the RBC35 specification for a direct fit.

How can I verify the AGM battery is holding charge correctly after installation?

The UPS self-test will pass and the replace-battery indicator will stay off when the 12V 3.3Ah pack is healthy.

Does the package include the wiring harness or connectors needed for the APC BE350U swap?

Only the 12V 3.3Ah AGM cell is supplied; reuse the existing harness from the old RBC35 cartridge.

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.