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Two sealed 12V lead-acid battery cartridges in black plastic housing

PowerWarehouse

PowerWarehouse 2XRBC3SLA32 12V UPS Replacement Battery 2 Pack for APC BK520

SKU CH-T9P8-XBRH1

Two 12V lead-acid batteries replace cartridge #3 in APC BK520 UPS units

  • CompatibilityFits: APC BK520
  • 12 V lead-acid chemistry powers APC BK520 units
  • Two-battery pack restores full runtime in one change
  • 100 % compatibility guaranteed with original cartridge #3
  • One-year replacement warranty backs every cell

Direct Fit for APC BK520

This twin-pack supplies two 12 V sealed lead-acid cartridges built to match the original specifications of the APC Back-UPS 520. Each unit slides into the existing battery compartment without adapters or wiring changes.

Ideal for Restoring Runtime on a Single UPS

The pair is sized for one APC BK520, so buyers maintaining multiple units or needing extended runtime beyond the standard cartridge should look at other configurations.

Highlights

  • 12 V lead-acid chemistry powers APC BK520 units
  • Two-battery pack restores full runtime in one change
  • 100 % compatibility guaranteed with original cartridge #3
  • One-year replacement warranty backs every cell

Specifications

BrandPowerWarehouse
Model2XRBC3SLA32
CompatibilityFits: APC BK520

Questions about this item

What UPS model must I already own for this 2-pack to fit?

These 12 V batteries are direct replacements for the APC BK520 UPS cartridge #3.

Will the 12 V lead-acid cells charge correctly with the original BK520 charging circuit?

Yes, they are guaranteed 100 % compatible with the BK520's existing charger.

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