Tesla Motors Club

I recently purchased a 2018 model S 100D. I installed a Dr900S Dashcam. IThe camera also runs in the Parkmode but does not record till either it senses motion around the car or senses an impact. I have it sitting in my Garage with the wall charger plugged in and set to charge at 80%. I have noticed that the battery goes down around 5% then it recharges the battery to 80% approximately every 48 hours . Does that seem a normal rate of discharge for a dual channel Dashcam?

If so will that have any battery degregation consequences charging every 48 hours?