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Sealed rectangular APC battery cartridge labelled 166

APC

APC Replacement Battery Cartridge #166

SKU CH-BKF2-Y8EFC

A UPS replacement battery cartridge numbered 166, supplied with an installation guide

  • Ready-to-install cartridge restores UPS runtime
  • Genuine APC part ensures compatibility with supported units
  • Includes installation guide for quick replacement
  • New condition guarantees full rated capacity
  • Manufacturer listed September 28 2025

APC Battery Cartridge #166

This APC Replacement Battery Cartridge #166 is a new replacement module designed for compatible APC uninterruptible power supply units. It restores runtime protection for connected servers and network equipment when the original battery reaches end of life. The cartridge includes an installation guide to assist with the replacement process.

For UPS units requiring cartridge #166

This cartridge suits administrators maintaining specific APC UPS models that accept the #166 form factor. It is not suitable for UPS systems that require a different cartridge number, a different voltage, or a different physical layout. Buyers who need extended runtime beyond the standard cartridge capacity should look at alternative solutions.

Cartridge number 166 compatibility

The single specification that decides fitment is the cartridge number 166. Verify that the UPS documentation lists this exact cartridge number before purchase. Using an incorrect cartridge number will prevent proper installation and operation.

How it compares

Measured against everything we stock in UPS Replacement Batteries, at today’s prices. Recalculated every night.

Price $360.99
Pricier than about 90% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand nameAPC

Questions about this item

Does cartridge #166 ship with the installation guide or do I need to download it separately?

The cartridge includes the installation guide in the package.

How do I confirm that cartridge #166 is the correct replacement for my UPS?

Match the cartridge number 166 printed on your existing battery or listed in your UPS manual.

What runtime can I expect after fitting cartridge #166 in a working UPS?

Runtime depends on the UPS model and connected load; the cartridge restores the original battery capacity for that unit.

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