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3 Dog Collar Batteries for Invisible Fence R21 R51 Microlite Perimeter IFA-001
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These 3-volt lithium-ion batteries will replace your Invisible Fence brand Powercap R21, R22, R51, and MicroLite dog fence collars - at a fraction of the cost! They fit all Platinum, Titanium, Mink and graphite Series Receivers.

They are manufactured in the USA by Perimeter Technologies and designed by the former Chief Engineer at Invisible Fence Company. 

Many dog owners report getting a 6 month battery life out of each of our Invisible Fence Brand compatible batteries. 


  • Average battery life of 4-6 months
  • Rubber gasket provides a water tight seal
  • Tamper proof design with coin slot for battery removal
  • Stronger contact material for better conductivity
  • Designed and Manufactured in the USA

Box Includes

  • 3 Replacement batteries
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