Charging a 5Ah phone empty to full every day of the year adds up to all of about 7kWh. Nobody cares if you shave off a couple cents per year if the experience is worse.
Slow, wired charging is the best combination for battery service life. A basic 5-10W power supply when the phone is going to be plugged in overnight is a universal method to achieve that; AccA on a rooted Android device with suitable hardware allows fine-grained control in software.
Even more important is to avoid charging the battery to full. The higher the voltage, the quicker it wears out.