PetSafe Batteries: What’s really inside?

Well, I got an invisible fence kit for my dog, and found out the battery in the collar was dead. It has big letters on it that say DISPOSABLE, which was interesting – why is there no recharger for the batteries on this thing? That would seem to be logical. After checking online, I found out that the batteries were little 6-volt guys that cost about $3/each! That’s a little pricey – I wondered what was inside. Maybe it was one of those new-fangled fancy LIPO (Lithium Polymer) batteries, which would explain the high price. I was shocked:


So, you can find these coin cells on eBay for, oh, 14 cents each shipped to your door. That’s a 92% savings per cell.

So, assuming you can carefully (I was not careful above, but I will be next time) cut open the housing with your rotary tool (I used my new Proxxcon IB/E precision tool), and tape/glue it back together for insertion into the unit, you can make the cells yourself for 28 cents each instead of $3. Not too shabby. I think a coin cell adapter completely separate is the next step. I’m sure I can find something on the market that I could adapt to fit into the collar housing.

I got it back together, and even though I did a great job tearing the plastic apart completely, not being careful whatsoever, I was still able to snap it back into the housing. I tested the battery with a multitester and it read the same as it did yesterday. So, with a rotary tool, time, coin cells and glue you can reconstruct your own PetSafe batteries for 28 cents or less.


One thought on “PetSafe Batteries: What’s really inside?

  1. tony martin

    Thanks helped me out, got a bit carried away with dremmel but got it all in place then just taped it all up works a treat.

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