Super fast battery charging

[sorgo 13]

https://play.google.com/store/apps/details?id=com.digibites.accubattery

this is what I'm using to get the battery temperature readings

[EskeRahn 5,459]

1 hour ago, sorgo said:

https://play.google.com/store/apps/details?id=com.digibites.accubattery

this is what I'm using to get the battery temperature readings

I generally recommend 3C all-in-one toolbox they got both a Pro and an Ad version, They also got the 3C Battery Manager tool as stand alone.

Here a couple of fresh dumps, currently zoomed to five days.

[sorgo 13]

thanks. I tried 3C and it's giving me same temperature readings. 50+ Celsius when charging. The phone is uncomfortable hot, i don't even want to leave it for a full cycle.

Does your phone really charge on AC under 30 deg Celsius?

[EskeRahn 5,459]

47 minutes ago, sorgo said:

thanks. I tried 3C and it's giving me same temperature readings. 50+ Celsius when charging. The phone is uncomfortable hot, i don't even want to leave it for a full cycle.

Does your phone really charge on AC under 30 deg Celsius?

Yes. But I do not use a vary fast charger normally. I try to use a charger offering 5W in normal usage, and only about 20W when I really need it. But even at 20W I do not have it go as high as 50°C, worst case in the forties. During fast charging usually peek at 42°C or lower. But once this year it has been above that, it reached 49.0°C on Feb 23.

PS I use a shell case, and this actually makes the heating worse at at can not cool to the surroundings as easy (plastic with card board inlay()

[daniel.schaaaf 177]

Oh my, the battery temperature should never ever reach 50°C. Actually, you want the battery to stay far away from 50°C, if you want it to last for a while. I always put my phones on a metal surface for cooling, when charging the battery.

The fridge might be a little too cold though. If the battery itself drops below 5°C, you risk an internal short while charging.

When a safety protection kicks in from charging the battery, regardless of the current capacity, something is wrong. Either the charging circuit was designed by someone who doesn't know anything about lithium batteries, or the battery is bad. In either case you risk your phone bursting into flames and burning your house down.

Something I noticed on my Pro1 is that the phone reports up to 4.370 V when the battery is at 100% (after having removed the charger!). To my knowledge, even high voltage lithium polymer batteries have a maximum voltage of 4.350 V. For any kind of lithium battery technology, 0.01 V too much can reduce the life time significantly ... or cause a fire ...

[OKSun 103]

Are you folks saying it is better to use another charger than the fx tec fast charging one? e.g. a samsung travel one?

Edited August 13, 2020 by OKSun

[Hook 3,017]

1 minute ago, OKSun said:

Are you folks saying it is better to use another charger than the fx tec fast charging one? e.g. a samsung travel one?

I almost never use the provided charger, unless the phone is low and I know I'm going to need to run out the door with it soon, and then I don't let it charge all the way.  Mostly I use my old desktop with 2,0 USB ports and an old USBA to C cord I used with my Nexus 6p.

[agent008 243]

28 minutes ago, OKSun said:

Are you folks saying it is better to use another charger than the fx tec fast charging one? e.g. a samsung travel one?

This is a recommendation I make to all my friends irrespective of the brand/model they buy. Especially because for a while now almost 100% of new phones come with QC chargers. These are a great way to make the customer wnat to switch phones after a year's use!

Edited August 13, 2020 by agent008
Correct misspelling

[EskeRahn 5,459]

Unfortunately QC chargers does not come with a simple switch to select normal or quick charge (I have not found one yet). BUT you can easily find QC 3.0 chargers with two or more slots, where only one is QC. This is a very handy thing. Use the normal slots normally and only the QC3.0 one when you are really in need of it. See also this

I use one found on ebay that provides 5W in two slots and 20W QC3 in the last one. it is 2.5cm thick, and 5x5cm excluding plug (85mm including EU plug) so not much bigger than other chargers.

[agent008 243]

13 minutes ago, EskeRahn said:

Unfortunately QC chargers does not come with a simple switch to select normal or quick charge (I have not found one yet). BUT you can easily find QC 3.0 chargers with two or more slots, where only one is QC. This is a very handy thing. Use the normal slots normally and only the QC3.0 one when you are really in need of it. See also this

I use one found on ebay that provides 5W in two slots and 20W QC3 in the last one. it is 2.5cm thick, and 5x5cm excluding plug (85mm including EU plug) so not much bigger than other chargers.

I bought one of those for travelling. I think the brand is AUKEY. It is rather large and heavy (which unconsciously makes us think it's a "quality" item...). So maybe not the first choice for someone who travels really light, but it has 2 2.1A green ports and one QC orange port. It lives in my travel briefcase.

For everyday use my BB Priv's charger is plugged beside my bed and I connect the phone to it every night. There's and old dual-2.1A Moto X charger at the office should the need arise. And in the car I have a QC charger plugged on the cigarette lighter, but that guy hardle ever sees any use (compared to when I had the Priv which for long trips I had to keep plugged and near the A/C outlet all the time...)

EDIT: It is indeed an AUKEY PA-T14.

Edited August 13, 2020 by agent008
Charger model

[EskeRahn 5,459]

11 hours ago, EskeRahn said:

I use one found on ebay that provides 5W in two slots and 20W QC3 in the last one. it is 2.5cm thick, and 5x5cm excluding plug (85mm including EU plug) so not much bigger than other chargers.

The one I currently use is this one. Do not get confused on the "2.1A" print  it only delivers 1A - and this is exactly what I want from it *LOL*

[sorgo 13]

So guys, can you confirm i'm not the only one reaching almost 60C temperatures because of faulty battery/controller or anything?

I see mention of a protective behavior of stopping the charging once temperature is too high. Can this be a sw issue?

[EskeRahn 5,459]

27 minutes ago, sorgo said:

So guys, can you confirm i'm not the only one reaching almost 60C temperatures because of faulty battery/controller or anything?

I see mention of a protective behavior of stopping the charging once temperature is too high. Can this be a sw issue?

Something is clearly wrong if it reached close to 60°C. I would suggest to hear what Support has to say in the matter.

[zraskolnikov 0]

Anyone else have this issue of the phone getting very hot while using the provided charger? Even when I turn it off (of course, it turns on to the initial lock screen once I plug it in) it seems to get really hot.

[Jacob_S 128]

There somebody told about having the same problem.

[Tsunero 214]

Seems like it's just the nature of quick charging to me. My PRIV also got quite hot when charging (although that only has QC 2.0). When charging through the PC USB it barely gets warm. Pretty much same with my Pro1 so I am not worried personally.

[EskeRahn 5,459]

(merged threads)

[raymo 177]

I use a 500mA chargers, with 1A it is always swapping between low\fast charging, and I guess it's not good for battery and controller. In fast charging the phone is quite hot as a cooktop.

With 500mA it takes about 5-6 hours for plenty charging, I also use a DIY-adjustable-timing power socket, so I usually never reach 100% charging.

I also use an electronic heat sink (from an old audio power amplifier) it works great as the pro1 has a metal case cover. See the picture.

 

Edit : normal functionning (no charging), with #sudo dumpsys battery, 35°C. With dissipator 27°C...35° seems to be hot but maybe it's normal, I don't know. What I know is less heat in battery = more durability.

 

Edited August 19, 2020 by raymo

[OKSun 103]

45 minutes ago, raymo said:

I use a 500mA chargers, with 1A it is always swapping between low\fast charging, and I guess it's not good for battery and controller. In fast charging the phone is quite hot as a cooktop.

With 500mA it takes about 5-6 hours for plenty charging, I also use a DIY-adjustable-timing power socket, so I usually never reach 100% charging.

I also use an electronic heat sink (from an old audio power amplifier) it works great as the pro1 has a metal case cover. See the picture.

 

Edit : normal functionning (no charging), with #sudo dumpsys battery, 35°C. With dissipator 27°C...35° seems to be hot but maybe it's normal, I don't know. What I know is less heat in battery = more durability.

 

Thanks. This discussion about battery is interesting and a bit complex for non technician like me.

The usual chargers are 5V. I have various ones 0.85A, 1A, 1.2A, 1.5A, 2A. Which one shoud we use for the pro1?

How many A should we achieve when charging with screen off?

 

Edited August 19, 2020 by OKSun

[EskeRahn 5,459]

22 minutes ago, OKSun said:

Thanks. This discussion about battery is interesting and a bit complex for non technician like me.

The usual chargers are 5V. I have various ones 0.85A, 1A, 1.2A, 1.5A, 2A. Which one shoud we use for the pro1?

How many A should we achieve when charging with screen off?

Well the answer is that to care for the battery as slow as possible - it is a matter of keeping the temperature at room temperature below 30°C.

BUT it is not that it is killed immediately by fast charging, or a very sharp limit at 30. it is like fast-food:
Occasional usage can be very convenient, but very bad for the health and overall lifespan if used daily.

I have written a lot more on my blog with links. Start e.g. here

[raymo 177]

As far as I know, (and using LineageOS, it could be different with stock-android), for me there are here three parameters for Li-on battery :

- 1 : less heat is better for long time battery usage, with 1A power my phone is swapping between normal/fast charging, I guess it's not good. That's the reason why I use an (old) usb adaptator who deliver only 500mA. For a night charge every day.

- 2 : the better use with this type of battery is :

-not under 30%

-every day charging a bit is better for durability, so you are at 30-80% most the time

- 3 : Fast charging never reach the full charge, in reality it's about 80%, but it could be pratice, so my advice is to use a dissipator (less heat) and not doing this every day.

 

edit : thanks @EskeRahn

very good explanation 😄

Edited August 19, 2020 by raymo

[OKSun 103]

1 hour ago, EskeRahn said:

Well the answer is that to care for the battery as slow as possible

I apologize for this additional question. I need to go to the bottom of this. I am still confused, and I see you are specialists :

In this article, they mention "The charging current should also apply approximately 0.6 to 1 times the battery capacity in mAh. Higher currents can reduce the lifespan of the battery, lower strengths can overheat the charger."

https://newsabc.net/how-to-extend-the-battery-performance-of-smartphones-and-notebooks/

If I understand this correctly:

Fx tec battery capacity is 3000 mAh, so the phone should charge with at least 1'800mA? if not the charger will overheat?

Edited August 19, 2020 by OKSun

[EskeRahn 5,459]

1 hour ago, OKSun said:

"...Higher currents can reduce the lifespan of the battery, lower strengths can overheat the charger."

I am by far an expert in this, though I have used some time digging into it.

The first part of the quote is clearly right in broad terms, but it is actually more complex. If we are below 50% and the battery is at room temperature high currents are not a problem, it is when the battery get more filled up and&or the temperature rises that the high currents are problematic.

On the second part, this sounds really confusing and against normal physics. I never heard of a charger overheating by supplying a low charge (On the contrary cheap ones can overheat while producing high currents where they ought to have limited their output). I wonder if it could be some translation error somewhere, as what is likely true is that at very low currents the efficiency will be low, that is a disproportional amount of the energy pulled from the wall end as waste (=heat) never reaching the battery. So not so environmental friendly.
Chargers of 0.5A or less you can barely feel get lukewarm in usage.

[internationaltraitor 84]

i usually just QC my phone for 30 minutes to 80ish%... i haven't really noticed the temp.  but it lasts me a good day, even two days. from a 30 minute charge.  and for the first 2 weeks, i let the phone on stand-by until fully drained.  lasted about 7days, if not longer, for the battery to fully drain on stand by.  then started my normal daily use.

[sorgo 13]

update: for me the solution was to move to lineageos and install acc module with setting up lower temperatures
https://forum.xda-developers.com/apps/magisk/module-magic-charging-switch-cs-v2017-9-t3668427