iPhone 7 plus battery capacity dropping fast
Hi to all,
I have been using an iPhone 7 plus lately. I use coconutBattery on my Macbook and I measured the battery capacity when I started using it. It is a used iPhone so when I first measured it, it had 95% of it's capacity after 224 charging cycles. 85 charging cycles later, in 2 months and 10 days, battery capacity has dropped to 87%. I can't understand why capacity keeps falling so fast. I make quite heavy use of the phone. In the car I always charge the phone while use googlemaps navigation and I listen to web radio and that makes the battery warm. I do this about 1-1,5 hours a day. Could that be the reason? Could it be because of a bad quality charger? I'm worried that in this pace, my battery will soon have half its capacity! Please advise!
iPhone 7 Plus, iOS 11.2.6, Battery Capacity