So I recently bought a new honor magic 5 pro. My last phone the Huawei p20 pro was around 5 years old and started to show significantly less battery life. So I want to use this phone again for 5 years. But now I wonder should I keep the battery around 50% (65-35) and charge twice as often or should I 80-20 and charge once every two days? Is there any science that proves one is better than the other? Thank you for your information and sources.
I would stick with the 80 20 charge.
Also, avoid any fast charging options on the phone as it heats up the battery.
Other than that, just enjoy using the phone. Lithium batteries usually come rated for 1000 charge cycles so they should be able to hold at least 80 percent of their capacity if charged daily after three years.