1st battery didn't last long

I'm not sure how old the batteries are but I know after using this type of battery it typically lasts about 3 months unless the dog makes the units go off frequently which causes more battery use. My dog is well trained and doesn't challenge the fence so the battery should have had no issues making it 3 or more months. The first battery only lasted MAYBE a month. I am on the second battery and keeping track of how long this one lasts. As for the packaging...all the batteries were out of the individualized compartments and were being tossed around in the box.

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