As best I can tell, with my eyesight, this battery is missing two of the copper points. It’s probable that I have been flying with it in this condition for some time due to the fact that I just noticed it. If I am not mistaken, this is the battery that became stuck in the P4. It took quite a bit of up and down movement (along with plastic knifes stuck into both tabs) to get it out. If this is that same battery and it was damaged when it became stuck then I have flown at least 10 times with it in this conditions. Only been flying six months. Need guidance from experienced and knowledgeable members.