Potential cause of completely dead Rog5 phones

[Danishblunt]

First of all I want to mention this is a theory, but it seems to be rather solid and would like to ask people to give some information regarding their Rog5 phones death.
So as you guys know it isnt exacly unusual to kill your Rog5, every time one of these phones die they have been shorted. Today I had a talk with a guy on my discord and I explained to him how the modes work on a charger and a phone, however I was unsure which voltages the Rog3 supported so I took a look on the charger and there I found a potential culprit for our issue.
It seems the charger supports 20v mode, which is way to much for any phone to handle to my knowledge, if a powersurge like that gets blasted through the phone no wonder it will destroy the power IC.
As some people know, there is a certain communication between a charger and a phone, meaning the phones IC will tell the charger which mode to use and the charger will comply, however if this communication messes up, it can result in a catastropihc failure, much like some people have experienced here.
In order to investigate a little more I would like Rog5 users with completely dead phones (not powering on, black screen) to tell me:
Did your phone die while charging?
Did you use the original Rog charger?
Does your charger support 20v mode (look on the bottom of the charger for this)
If this theory holds water then I strongly suggest you get yourself a charger that supports max voltage of 12v, I believe the 20v mode is reserved for ASUS's low end notebooks and is absolutely not intended for mobile phones.
This also goes for the Rog3 users, altho its very rare the rog3 dies from this, there have been cases where the rog3 would die while charging, i had 3 cases reported to me and all 3 had been while charging.
I will repeat this, this is merely a theory right now, so do not quote this as a fact until we got way more data on this.

[Danishblunt]

ronald1985

https://zentalk.asus.com/en/discussion/comment/186227#Comment_186227

Still a battery defect and can happen with any other phones.

Which further backs up my point your original post is bias.

How about asking further questions and not just about charging?

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No it cannot because on is a short that causes batteries to explode. How many rog5 were on fire? Exacly 0.
🤡

[wojtekmarchewka]

@Danishblunt Interesting insights. I charge with the original Asus charger, which has 20V. I don't know if it matters, but in the battery settings, I checked "stable charge" for ultra-stability. I do not know what it is, because when I charge the smartphone, it displays the information Hyper charging 65, the smartphone itself charges quickly. I also have a limit of up to 90% of charging. I wonder if the people who got damaged Rog Phone 5 had the options as above attached and if it has any impact on their damage.

[FunBike31]

wojtekmarchewka

@Danishblunt Interesting insights. I charge with the original Asus charger, which has 20V. I don't know if it matters, but in the battery settings, I checked "stable charge" for ultra-stability. I do not know what it is, because when I charge the smartphone, it displays the information Hyper charging 65, the smartphone itself charges quickly. I also have a limit of up to 90% of charging. I wonder if the people who got damaged Rog Phone 5 had the options as above attached and if it has any impact on their damage.

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There are 3 types of charge provided, fast 65w, stable 30w and ultra stable 18w
Unfortunately, with firmware 151, the 3 options give the same measured charging time, the time indicated is very different depending on the selection.
I no longer use the Asus charger while waiting for a correction, a bug on the battery management is too important to be taken lightly. I am going to do more rigorous tests again starting from the same level of charge of 10% up to 80% to stay on a linear range with two different chargers, because I just saw that the Motorola charger of the G8 + is compatible with the dialogue of the Rog5 which indicates 15w, 12w, 9w depending on the selection, which is disturbing, because it is not supposed to know these values while the ASUS values could have been written in hard.
I will keep you posted in several days, it will make me play a lot to discharge the battery 6 times.

[cotov666]

FunBike31

https://zentalk.asus.com/en/discussion/comment/186696#Comment_186696

There are 3 types of charge provided, fast 65w, stable 30w and ultra stable 18w

Unfortunately, with firmware 151, the 3 options give the same measured charging time, the time indicated is very different depending on the selection.

I no longer use the Asus charger while waiting for a correction, a bug on the battery management is too important to be taken lightly. I am going to do more rigorous tests again starting from the same level of charge of 10% up to 80% to stay on a linear range with two different chargers, because I just saw that the Motorola charger of the G8 + is compatible with the dialogue of the Rog5 which indicates 15w, 12w, 9w depending on the selection, which is disturbing, because it is not supposed to know these values while the ASUS values could have been written in hard.

I will keep you posted in several days, it will make me play a lot to discharge the battery 6 times.

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If you want to measure charge speed why not just use an app like ampere that measures current in real time? Sounds easier.

[FunBike31]

cotov666

https://zentalk.asus.com/en/discussion/comment/186720#Comment_186720

If you want to measure charge speed why not just use an app like ampere that measures current in real time? Sounds easier.

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Many reasons
- battery technology has evolved with the possibility for the OEM to control the types of loads, the bypass and more particularly for the Rog 5 with these two batteries that Android does not yet know. (like dual SIM at the start).
- Rare are the applications which are compatible with these new technologies and the diiferent types of measurements and values ​​returned by the devices to the applications (mA, uA, inverted, etc.), others are not standard on some devices ( Samsung is a good example)
- Ampère announces these limits quite clearly, moreover, it is really not the best application for the Rog 5, try 3C Battery Manager if you want a much more compatible and low-resource application
- Other applications are coded with the feet, use a high load of resources.
- None of these applications can detect a faulty charger that will send the wrong voltage for example.
- In short, I prefer an Android as clean as possible and use a USB tester which takes the information directly from the charger.