Of course, I agree. We are talking about for people needing it to be 100% for the day for their very heavy use.

Basically charge to 100% however they like, just not keeping it charged overnight for fire safety and the pressure of trickle charging at 100% for a long period of time.

Yes it will deteriorate faster than just charging to 85% because pushing in the energy between 85%-100% takes a lot of work for a charger. That’s why you might notice your phone charges quickly from 50% to 85% but slows down the charging rate a lot as it reaches 100%.

Still, if you find you need the full 100% battery charge to last a day then it’s worth charging to 100%. If in a day you only use day 40% battery then just charge to 85%.

All batteries deteriorate over time. This deterioration is faster for batteries that are charged above 85%. However, it is your phone and obviously you should use it how you need it. If you actually need 100% then that’s just how it will be.

Overnight charging can pose more of a fire hazard sometimes, so it’s best to charge up before you sleep and then top up in the morning perhaps.