I used to use an iPad charger on my iPhone 6 for fast charging and didnt really care about battery all that much,letting it die often etc and my battery health was 80% after 2 years and I could notice degraded battery life.Now that I got an iPhone 7 plus I want to take better care of it so any tips?Google searches state the phone should be kept between 40% and 80% but wouldnt the heat from small charges throughout the day degrade battery life further?