I just picked up an M3 16in and when I first got it I checked the battery health via Coconut Battery and it had a little under 101% battery capacity. I discharged it to about 20% once and I have had it plugged in ever since, since Photos is doing its analyzing thing. For some reason, I am up to 5 cycles and the battery health is down to 99.9%. I am super worried I got a bad battery, should I return it and get another one? Or is this normal?