FiberTool Authorized Dealer Authorized Distributor

Replace your lost or defective OTDR batteries with this well-made aftermarket alternative.

Compatible with the following OTDRs:
GN NetTest CMA-4000 series OTDRs: CMA-4000, CMA-4000i OTDRs.

*Should work in Siecor and Corning OTDRs that use the CMA modules. However, unless your model number is specifically listed above then we encourage you to first contact us with pictures of your existing battery to verify compatibility.


12V, 2.3Ah NiCad batteries.

Warranty Guaranteed Not DOA

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Battery Pack for GN NetTest CMA-4000 series OTDRs

  • Item ID: 251789
  • FiberTool
  • Brand: FiberTool
  • Model: 21628
  • Availability: In Stock
  • Condition: New
  • $85.00

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Tags: FiberTool, 21628, OTDR, Battery, Pack, for, NetTest, CMA-4000, series, OTDRs