I recently bought a refurbished P3 battery and when I received it, I charged it and checked that it was a new battery as advertised. I then checked the number of times charged and it showed 1 time charged. All cells were charged and the voltage was correct. Then I see on my remote that it said there was a bad cell in the battery. All other checks showed a good battery. I tried flying with the drone 2 foot off the ground for the whole charge(from 97% down to 8%) no problem. A couple days later a second refurbished battery arrived...This battery checked and performed the same way. Is it possible that refurbished batteries have repaired cells but the intelligent circuitry on the PCB does not reset? Both of these batteries last as long as my "Good" batteries, and they do not get as warm as my "good" batteries. Has anyone run across anything like this, concerning refurbished batteries?