[Moto G5 Plus Questions & Answers] sky-head:
As I am know a little bit about charging lithium batteries, I am very very certain that charging with 9 V and 2 A (18 W) will cause a lot of heat and reduce the lifetime of your battery. But this is exactly what happens on my G5 plus, when it is below 60 percent of battery capacity and plugged to a charger that is capable of 'high voltage' and 'ampere' charging. The manufacturers really don't care about that and would never ever admit it as this is totally compliant to their planned-obsolescence-and-throw-away-mentality, as well as to their make-my-customers-buy-a-new-phone-every-year-stance-as-we-will-demand-a-barefaced-price-for-changing-the-built-in-battery-or-find-some-other-way-(e.g.-via-software-updates)-to-make-the-customer-not-want-to-keep-their-old-phone-mentality. Ok: I have to admit that charging at 2 A is only something like 0.67 C (for a 3000 mAh battery) and within the 'recommended range' and far less harmful than charging with something like 1C or 1.5C, but charging at something like 0.3 C will still cause less harm to the battery.

Unfortunately, it is not what I want:

Quick Charge or Turbo Charge is great - I consider it an extremly useful feature, especially, when it happens that your phone was used heavily and the battery is almost drained and you have to charge your phone quickly, as you will need it very soon again, but: The most common case will be that my phone was drained during the day and remain at some state like 20 percent, when I want to go to bed. I absolutely don't need to quick charge it over night, as a moderate and lifetime-of-battery-preserving 0.5 A charge will also get the job done perfectly within 6 hours, until I will have to get up in the morning. I don't need to artificially age my batterie's lifetime every night, just for the reason that the phone will be fully charged at 2 a.m. instead of at 5 a. m. - so just for no reason at all.

Anyway: I don't want to have seperate chargers, as the only possibility I currently know, of not using quick charge, is to use an oldschool charger that can only support 5 V and 0.5 A (0.167C), and which will probably sooner or later not even be produced anymore.

So the questions are:

Is there a possibility to quickly and conveniently disable/enable quick/turbo charge of the G5 Plus via Android? (the best would be a button at the top of the screen, in the bar - as easy as switching wifi on/off).

Is this possible with and without root?

(I actually really ask myself if the drive for manufacturers of developing options such as quick charge was originally to provide a better user experience or if it was to increase their profits as a bricked battery is probably the most common reason for customers to buy a new phone, as everybody seems to want to avoid replacing or getting a battery replaced at any cost. Just my 2 cents.)

PS: You can read about quick battery charging, e.g. here: http://batteryuniversity.com/learn/article/ultra_fast_chargers - but there are like a 100 of blogs.

EDIT:

Is there any app that allows you to limit the charge current with root? This would do the best job, as I assume. One could then maybe charge using 12 V but only like 1 A (which is only 0.33 C, but still transfers 12 W of charge Power...). That would be awesome! Almost no harm for the battery, still a lot of charge speed.