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Two black 12V lead acid battery cartridges side by side

PowerWarehouse

PowerWarehouse 2XRBC21SLA210 UPS replacement battery 12V 2-pack

SKU CH-F8ZT-YG3W0

Two 12 V lead-acid cartridges replace APC BF400C UPS battery #21

  • CompatibilityFits: APC BF400C
  • Compatible with APC BF400C UPS units
  • 12V sealed lead-acid cartridge #21 design
  • Two-battery pack supports extended runtime
  • 100% compatibility guaranteed for direct replacement

Compatible replacement for APC BF400C

This 12 V lead-acid cartridge replaces the original battery in APC BF400C uninterruptible power supplies. The two-pack restores full runtime with a direct-fit design that requires no wiring changes. PowerWarehouse guarantees 100 % compatibility with the factory unit.

Upgrade when capacity fades

Replace the set when the UPS reports low battery or runtime drops below usable levels. A fresh pair returns the system to its original backup duration. Units that still hold charge through brief outages do not need immediate replacement.

Highlights

  • Compatible with APC BF400C UPS units
  • 12V sealed lead-acid cartridge #21 design
  • Two-battery pack supports extended runtime
  • 100% compatibility guaranteed for direct replacement

Specifications

BrandPowerWarehouse
Model2XRBC21SLA210
CompatibilityFits: APC BF400C

Questions about this item

Does the 2XRBC21SLA210 cartridge fit directly into my APC BF400C UPS?

Yes, the cartridge is built to match the BF400C battery compartment so it slides in without adapters.

What is the step people often miss when installing the two 12 V batteries?

Connect the series jumper between the two batteries before plugging the cartridge into the UPS, otherwise the unit will not start.

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