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 black sealed battery with two terminals on top

PowerStar

PowerStar 12V 3.3AH RBC35 UPS Replacement Battery

SKU CH-ZF0T-G5PDE

12 V 3.3 Ah AGM cartridge fits APC Back-UPS ES 325 and 350 models plus compatible CyberPower units

  • Maintenance-free AGM design eliminates upkeep hassles
  • Direct 100% OEM fit for APC BE325 and BE350 units
  • 12V 3.3AH capacity powers essential backup systems
  • Compact 5.28 × 2.64 × 2.4 inch case installs easily
  • Terminals spaced 1.6 inches match original cartridge layout

Replacement Battery for APC Back-UPS ES

The PowerStar RBC35 is a 12V 3.3AH sealed lead-acid battery built with AGM technology. It serves as a direct 100% OEM replacement cartridge for APC Back-UPS ES models including BE325, BE350, BE350C, BE350G and BE350U. The maintenance-free design offers an expected service life of four to seven years. Dimensions are 5.28 by 2.64 by 2.4 inches with a terminal spacing of 1.6 inches.

Suitable for UPS units listed.

This cartridge fits the APC Back-UPS ES series and compatible CyberPower models such as 325SL, CPS300SL, CPS320SL and CPS325SL. It also matches Conext CNB325 and APC RBC47 references. Buyers needing a different voltage, a higher ampere-hour rating or a form factor not listed should look at other products. The battery is sold new and ready for installation.

12V 3.3AH AGM chemistry decides compatibility

The single specification that determines fit is the 12 volt 3.3 ampere-hour AGM rating in the RBC35 form factor. Only UPS units designed for this exact electrical and physical profile will operate correctly. Verify your UPS model against the supported list before purchase.

Highlights

  • Maintenance-free AGM design eliminates upkeep hassles
  • Direct 100% OEM fit for APC BE325 and BE350 units
  • 12V 3.3AH capacity powers essential backup systems
  • Compact 5.28 × 2.64 × 2.4 inch case installs easily
  • Terminals spaced 1.6 inches match original cartridge layout

Specifications

No published specifications for this item yet.

Questions about this item

Will the 1.6-inch terminal spacing match the connectors inside my APC BE325-CN without modification?

Yes, the 1.6-inch distance between terminals is identical to the original RBC35 cartridge, so it plugs straight into the BE325-CN and BE325R battery compartments.

After installing the cartridge, how can I confirm the 3.3AH capacity is delivering the expected runtime?

Run a self-test from the UPS front panel or management software; a healthy pack should sustain the connected load for the same duration as the original battery when new.

Does the package include the plastic housing and wiring harness, or only the bare 12V 3.3AH cells?

The unit ships as a complete RBC35 cartridge — cells, plastic enclosure and pre-fitted wiring harness — so no extra parts are required for installation.

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.