This may be a stupid thing to bring up but I was watching a YouTube video once and the guy change batteries and made a comment that the battery he took out was warm so he was going to wait a while to put it on the charger. Does anyone know if that is really something you need to do? They have put so much thought into the batteries that you would think that they would have taken that into account or told you you needed to do it. But they are so expensive I thought I would see if anyone else has ever heard of this.