yashsingh1/xdaforums huggingface dataset:
[Nexus 5 General] bblzd:
It will cut off after reaching extremes. You don't want it reaching those extremes ever though or it WILL take it's toll on the battery.

Battery's don't like heat. They don't like extreme cold either.
[Nexus 5 General] Enhanced:
Don't think the battery will ever get to 110F as the phone will shut down/not charge at that temperature until it goes down. Therefore, you probably couldn't spoil the battery if you tried with this fail safe implemented.

With someone's personal testimony about a fried phone, I can offer my testimony that I used a wireless charger on my Nexus 4 + played games until hot + charged whenever I wanted to and the phone, which my GF uses now, isn't any worse for wear.
[Nexus 5 General] phiral:
Especially because the Nexus 5 has a Li-Po (lithium-polymer) and not a lithium-Ion battery ;)
[Nexus 5 General] PhilipL:
Hi

These batteries don't like heat full stop, they are like perishable foods and degrade quicker the warmer they are, regardless of being charged or not. This is why laptop batteries do not do well when the laptop is used mostly on the mains, nothing to do with constant top up charging, it is because the battery is constantly held in the warmth of the running laptop all day and age much quicker.

Lithium batteries do not work well in extreme cold, but this isn't permanent and they return to normal when back to room temperature, and lithium batteries are held refrigerated for storage, just like a perishable food.

Regardless of being used or not, the battery will lose a considerable amount of its capacity just by ageing over a year or two. Given the various safety controls built in, it is fairly difficult to cause much more damage than time alone will cause, so you might as well just use and abuse the battery anyway, especially as most people will be replacing the phone after a couple of years.

Regards

Phil
[Nexus 5 General] Enddo:
i dont think you know what the fail safe temperature is

http://productforums.google.com/forum/#!topic/nexus/cVuWVDW-hyY

there's a thread with someone's n5 getting to 45C(113F) while playing games and without shutting down, and he lives in Canada. imagine what temp it would be at in any reasonably warm climate

110F is not safe if you want to preserve the longevity of your battery. period.
[Nexus 5 General] JamieFL:
Not irrelevant... Mine overheated while attached to my laptop and the led screen blew up. It developed a black bubble at the bottom near the home button.
[Nexus 5 General] markdapimp:
No phones currently have no active cooling on them :P
[Nexus 5 General] markdapimp:
Also heres what happened to my HTC One X

http://forums.androidcentral.com/ht...e-x-battery-draining-rapidly-overheating.html

It drained rapidly and the backside was always hot when it wasn't even in use just sitting on my desk caused it to got hot

and i would charge it to 100% and took it off the charger ~10 mins it dropped to 70% just sitting there idle and the back is super hot

my point is the charging circuit only controls for overcharge with is extremely dangerous
[Nexus 5 General] NotFromMountainView:
Just another example of Google cutting costs to put out this cheapo piece of %$))$!

But actually I did manage to really cook my phone! I set it (plugged in!) in a south-facing window to shoot time-lapse and oh-so-cleverly the sun bright winter sun was streaming through the thermal glass, and on to the silky black phone and...physics happened! About 15 minutes in my insta-greenhouse and I heard a strange whimpering 'ding!' from the phone -- when next I looked it had shut itself down. On reboot Dashclock was reporting "Overheat" "Not charging", and temp of 60+ degrees (can't remember the exact number but it might have been as high as 68!) Panic & a few minutes in the freezer brought it back to normal.

Take from that what you will:

1. It really dislikes being treated like a tomato seedling.

2. Idiot user didn't understand the 'greenhouse effect"

3. The phone does stop charging and goes into shutdown when things get too hot.

Before you judge too harshly, I want to point out the most obvious factor; a truly earth-shatteringly great phone would have come packed with the necessary technology to protect the phone in such cases -- maybe that would be a fan, or maybe it would be better served with a liquid cooling system, but whatever it should have, clearly Google cut corners yet again!
[Nexus 5 General] jdk2:
And the size and weight of the phone would grow enormously. Are you kidding? And what phone offered anywhere by anyone does what you suggest?
[Nexus 5 General] Woody:
I'm not the smallest guy on the planet, but can you imagine the size of a the pair of cargo shorts/pants that would be needed to carry a liquid cooled smartphone? Massive!! lol

Fwiw, my N5 routinely gets to 107-111f when doing some intensive things with other background intensive things running as well (i.e. banning trolls on my phone both through Tapatalk and Dolphin while listening to a streaming content on mobile wireless and sitting in the sun soaking up some Vitamin D).

Oh ya!!

Thread Cleaned
[Nexus 5 General] NotFromMountainView:
It ain't about the pants, it's about Google being too damn cheap to deliver truer-than-true state-of-the-state-of-the-art! Come to think of it, if Google had the balls to fill those pants we'd have the phone we really deserve!

68 Celsius is about 154 Fahrenheit. But as I said, because it was actually being cooked at the time.
[Nexus 5 General] escarabajo:
Good to know :good:
[Nexus 5 General] maxpower7:
I am utterly baffled by your assertion that the N5 lacking an active cooling system (currently available in exactly zero smartphones) should be taken as evidence that Google is "cutting corners." I've seen a lot of really weak criticisms in these forums, but this one takes the cake.
[Nexus 5 General] MrBelter:
My Nexus 4 battery was 40C with the phone just sat in my pocket when we went to Portugal and unless you are willing to charge it in a fridge you're knackered.

Lithium based cells start to die the second they are manufactured, even if you are the nicest person on the planet to your battery it is going to fail eventually. Life is too short to spend your precious time fretting over your battery.
[Nexus 5 General] markdapimp:
Yes and money grows on trees

not saying you all should be paranoid but just to be caution about wireless charging such as the Tylt and to let the device cool off after intensive gaming.
[Nexus 5 General] kylec:
My old one x got super hot all the time even from basic tasks. Both on and off charge. I don't think it had anything to do with charging (but yes charging did make it stupidly hot). It always just seemed like more of a poor design to be honest.

That was the main reason I bought a Note 2 a month after buying the HOX. And I charged the Note 2 at all sorts of temperatures with no noticeable issues after 12 months.

Just my experience with both phones :)
[Nexus 5 General] markdapimp:
HTC one x had a poor charge controller/regulator inside it let the battery pass the Overheat stage 90% of the time i see my one x saying overheat nexus 5 has at least better chips inside.

Qualcomm PM8841 (power management for cpu?)

Texas Instruments BQ24192 I2C

High Efficiency 4.5A Switch Mode Charger

92% Charge Efficiency at 2A, 90% at 4A

Accelerate Charge Time by Battery Path Impedance Compensatioin

Safety

Battery Temperature Sensing and Charging Safety Timer

JEITA Guideline Compliant (bq24193)

Thermal Regulation and Thermal Shutdown

Input System Over-Voltage Protection

MOSFET Over-Current Protection

http://www.ti.com/product/bq24192
[Nexus 5 General] Cirkustanz:
I have a few qi chargers (official nexus, lg wcp400, and a tylt vu). As has been mentioned all over the place, the Tylt vu is in fact quite capable of exceeding that temperature threshold on the battery, even if the screen is off and it was idle when you started. Seems like most people talk about this being related to the Tylt having multiple charging coils.

Many people keep using it, personally I stopped. I'm probably going to return it, but I might pass it off on Craig's List since I bought it at the $35 price.
[Nexus 5 General] NovaSlim:
Highly recommend monitoring battery with Gsam battery monitor, you can set to to Alarm you when the battery temp exceeds certain thresholds.
[Nexus 5 General] ConTejas2:
I'm not saying one shouldn't be aware of excess heat and be careful, but I've been using QI wireless since the day the N4 was released, same with my lady's N4, which we both have and she still uses daily, and since day 1 on my N5 without issues. Cheap Chinese N4 orb knockoffs and a Nokia pad knockoff too, all night and I use it most of the day on my desk at work (which is the beauty of wireless, very convenient to pick up/set down and keep charged). Phone stops charging once it charges and has always been cold to the touch when picking them up. All hold a charge as good as new when off the charger long enough to see 4+hour of SOT.
[Nexus 5 General] markdapimp:
Charging via USB/AC is the safest as i think it goes straight to the Texas Instruments BQ24192 I2C

where as wireless charging does not and it allowed the battery to overheat atleast with the tri-coiled tylt
[Nexus 5 General] CWick4141:
Thanks for the info as I just got my N5!
[Nexus 5 General] ConTejas2:
I would expect to have heard a lot about overheated devices if this true. I have seen some complaints about the Tylt Vu, but not overwhelming. Did you contact Tylt Vu about a defective device? I really liked the design.
[Nexus 5 General] MrBelter:
Unfortunately it does not but endlessly worrying about your battery isn't going to make it happen either, you have a warranty, use it if you manage to kill the cells.

If i charge my Nexus 5 with the supplied charger it reaches a peak temperature of 31c if i charge my Nexus 5 using the supplied charger in conjunction with one of THESE the battery reaches a peak temperature of 31c, once the battery is at 100% the temperature falls off to 22c where it sits until i lift it off the pad. (UK with the central heating set to 18c)
[Nexus 5 General] Enddo:
you're such a nice guy for offering to buy me phones for the rest of my life as the battery dies. no one has ever offered that to me before ;)

how about you stop pushing your thoughts and opinions on people who aren't asking for them. if i want to protect the battery in my device it's my choice. and if people ask for tips on how they can preserve their battery life as much as possible then i will do what i can to keep them well informed.

im sorry that you have some kind of issue with facts that i presented. maybe you just dont want to feel bad when you're forced to purchase another device in a year or two. ill save my 350 dollars and buy a nice steak to celebrate while you're having to setup a new phone mr moneybags
[Nexus 5 General] davidstech11:
Overheating and the Tylt wireless chargers? This is interesting because I am concerned with how hot my Nexus 7 is getting while charging. Just so happens it only happens with the Nexus 5 on two different Tylt wireless chargers. Does NOT (so far) cause my Note 3 or Nexus 7 to get hot. I use a lot of devices all the time so one day when I pick my Nexus 7 up from the Tylt charger I feel its extremely hot. I would say uncomfortably hot. I play high end games and felt a device get hot before. But this was not right. ESPECIALLY since it was turned OFF and had been off for some time. By the time I could find a battery app and download it it actually felt a little cooler. It was a few minutes but even after it cooled a little it was saying 116° F. Maybe the battery app was wrong about the temp and wrong about it saying it was “overheating". But it was without doubt overheating. I'm actaully afraid to sleep with it on the Tylt since I don't know how hot it would get. I never left it on to find out.

Since having this happen on both of my Tylt wireless chargers I used the standard charger and it does not get hot. I still haven't called Google. Or Tylt. I love that the Tylt will charge my devices at a decent speed. Don't know why it only makes my Nexus 5 overheat SOMETIMES.

I just wanted to put it out there what I seen. And from what I seen here it seems I'm not the only one.
[Nexus 5 General] markdapimp:
Tylt has 3 inductive coils instead of the QI Standard One coil. it could be possible that all three coils are on at the same time and can be overvolting/overamping the Nexus 5 thats why many people claim it charges so dam fast
[Nexus 5 General] shan25:
What would the appropriate temperature threshold be to let your battery charge at(for your CPU and your battery)? Because my battery is almost always above 35°C and my CPU is always hotter..
[Nexus 5 General] TheArc:
I honestly think the phone heating up to extreme temps are good. Just place it on your table and crack open an egg on it. Tadaa fried egg.

Real statement : I believe thrashing the battery doesn't matter, as after a year or two the same damage will occur to your phone. I've been thrashing my phones battery allot, playing intensive games and charging at same time. It never glitches up nor shuts down. The batteries capacity stays the same as I monitor my battery life daily. So the conclusion here is use the phone as you would and how you want. In a year Google will release a new Nexus and hopefully they have the brains to fit in a much larger battery or they can go f#$k themselves.
[Nexus 5 General] refinition:
But what he says is also somewhat true. The battery is going to degrade no matter what so you might as enjoy using your device like you want to
[Nexus 5 General] TheArc:
And there we go, someone with some understanding that enjoy your device as is and just face the problems. Nothings going to be perfect, even if you plan out everything. Something is bound to mess up.

If you're concerned about battery capacity failures and that your battery may lose its original capacity then be a nob. The phone was built for intensive gaming and usage. The phone will ware out soon enough. So might as well enjoy it while it lasts.
[Nexus 5 General] NotFromMountainView:
Yes, yes, yes, and the same number have cooling fans. (As far as I know.) Kinda the point as was just taking the OPs original complaint to the most absurd level I could think of. I thought the idea was so ridiculous, and the tone so over-the-top, that satiric intent would be self-evident.

*sigh*

The rest of the story is true though, I did accidentally cook my phone to legitimately scary temps & it recovered with no apparent harm. More relevant to this thread; it stopped charging and shut down when it went into overheat.
[Nexus 5 General] Enddo:
of course the battery will degrade. the issue is here is the RATE the battery capacity degrades. lose 1% - 5% every year with optimal conditions, or be careless and lose 10% or more. its your choice, im not making you use your device any differently. it's you guys who are in a battery conservation thread and trolling

make your own 'lets use ruin our battery' thread, and chat it up
[Nexus 5 General] Mr. Sprinkles:
There's a whole thread about this here and here. I have a theory that it's the metal discs and vibrator in the N5's back cover that are heating up. I think the tylt occasionally misjudges where the phone is and ends up applying energy to areas it shouldn't.
[Nexus 5 General] davidstech11:
Could be. Either way I don't say that to knock the Nexus 5. It lacks some of the things my Note 3 has but I still can't put it away. I still use wireless charging. And love the convenience of it. Just be careful if you use the Tylt wireless charger with the Nexus 5. Even after all this I would recommend the Tylt charger for other devices. It charges devices fast and props the device up while charging.
[Nexus 5 General] davidstech11:
Forgot to share this earlier

I wrote above about my Nexus 5 getting above 116 F. It already started cooling down before I found and downloaded an app to check it. This only happen with the Tylt wireless charger. Not posting this to repeat what I said. Just to post the screenshot I took when it first happened.

This is still one of my favorite smart phones. lol
[Nexus 5 General] liamwli:
Ah, good advice.

I normally have my phone charging at all times, I'm assuming this isn't actually a good thing to do?

Actually, I know it isn't a good thing to do. But even more don't do it when I've been playing a CPU intensive game...

Understood ;)

Liam
[Nexus 5 General] TheArc:
A fan in a phone and water cooling systems? That's bizarre. A fan inside a phone would need air pockets, dust would easily get in, and with that will come fan noise, and I doubt people will like it.

Water cooling systems may breaks hen dropped and can short your circuits of your phone.
[Nexus 5 General] NotFromMountainView:
Good grief, this is after I explained myself! (see about a page back.)

A satiric exaggeration --- that was all it was! The OP noted the lack of fan & I pushed the obvious wackiness to yet another level. It was such a crazy idea that it was meant to be seen as knowingly crazy; as a satiric jab at the OP's original idea that there should have been a fan or some other sort of better cooling system in the phone.

And again, the useful info in the post: I did accidentally 'cook' my phone (read my original post - greenhouse effect) and when it got scary hot the phone stopped charging and soon after shut down. Looks like a good indication that the phone does what it can to protect itself. But still can't be a good idea to cook your phones so keep the black ones out of direct sunlight behind glass.
[Nexus 5 General] TheArc:
Does the device still operate?
[Nexus 5 General] NotFromMountainView:
Yes!

I panicked briefly, then put it in the freezer for a few minutes (Google, too cheap to provide freezers with phones! :p ) But everything seems normal aside from a few glitches that started before the sunstroke struck.

I guess I should note that the heart of the OP's message has some merit - it ain't a good idea to overheat your phone too much if you can readily avoid it.
[Nexus 5 General] TheArc:
In a way everyone's right, and everyone has their own opinions about their phone. So it all comes down to how you want to treat your phone.

Plus I know Google didn't put a bigger battery or that the device over heats fast. Maybe Google should have added some kind of fan in the box so you just place you phone on top of it for a minute and it cools it down. May sound stupid but I bet it'd work. I'd pay extra bucks for it ad well.
[Nexus 5 General] Enddo:
it is perfectly healthy to keep your device on the charge a lot. the more you keep it 'topped off' the better. but you are correct about gaming. it's wise to let the phone cool off before putting it back on the charger
[Nexus 5 General] markdapimp:
When wireless charging I tend to notice the phone getting hot on all qi chargers more than charging via the cord and ac adapter so I searched for an app on Google play and typed battery widget it gives you alerts for when the battery is in a critical state and or if the temp rises to a certain level you can set. Here's what I set mine to.
[Nexus 5 General] EarlZ:
No matter how you take care of the battery, using the phone will degrade the battery one way or the other.. 10% loss per year is a super optimal case..

Though I am wondering why theres no real way of cooling the CPU/Batter on mobile devices.. something like a metalic back casing which can cat as a heat sink for the battery and CPU.

Do you guys also charge as often as possible even at 90% battery?
[Nexus 5 General] prstorero:
The why would be cost and space. I'm sure the cost is next to nothing for them, but the physical space available on pretty much all devices is the biggest factor (in terms of an active fan and such). The metal casing could also hold more heat because it will stay heated up for longer. I never charge at 90%. With how slow this thing drains I always just do it at the end of the day.

prshosting.org
[Nexus 5 General] GSLEON3:
Just FYI, the flashing red light can indicate several things on an HTC devices. If you decompile the framework you wil see that LED is also used for regular charging whenever the device report a battery with a 0% charge & screen-on state or a 0% to 4% charge with a power-off state.

---------- Post added at 01:13 PM ---------- Previous post was at 01:00 PM ----------

Actually, a metallic alloy casing, particularly one high in copper content, will dissipate heat faster. The fact the you feel the heat more so in devices with alloy casings proves the point. It is not that that device is getting hotter, it is that more of the heat is being conducted by the alloy where it is transferred from the hot metallic surface area to the cooler atmosphere. Metal is conductive, plastic is an insulator. Heat is energy & conductive materials better transfer that energy into the surrounding cooler atmosphere (dissipation) than composites or plastics can. These are basic laws of thermodynamics. Believe me, I am a mechanical engineer & I deal with in heat transfer packages & equipment all the time. While we work on a much larger scale, usually with a steam or a hot water medium, the principles remain the same. At any rate, this is why heating & condensing fins on your home forced air or split unit are always aluminum or copper based alloys.
[Nexus 5 General] rancur3p1c:
not going to fail within 1 year.

it's going to be at 70% capacity and you'll be out of warranty
[Nexus 5 General] TXRaunchy:
i wish the battery was easily replaceable.
[Nexus 5 General] howard bamber:
It is. Unclip the back, take the connection off and carefully remove. Comes out fairly easy. New one is 12£uk Amazon or ebay. Takes ten mins. BTW they ship phones, etc with 60%charge as this is the optimum not full.

Ten min cutoff app.
[Nexus 5 General] howard bamber:
Switched my phone on. This was the temp after reboot so had time to cool!!

Ten min cutoff app.
[Nexus 5 General] gamer.11:
correct me if i am wrong but i used DU battery saver(not much of a battery saver as it keeps running in bg) and i noticed that my phones does not do the "tickle charging" the mentioned in the app so i did a bit of googling and found that it's not much of any use other than be on the charge unit for another 10 mins. How do you guys think is there any real use to this? or is my phone the only one not doing the mentioned type of charging?
[Nexus 5 General] Hemotherapy:
Interesring. This is what killed my HTC One I think...I never did games that much but started Brave Frontier and boy that phone got HOT while playing. And to make matters worse I'd charge it while playing because it wouldn't make it all day on its own... Once when I stopped playing before a movie it stayed hot the entire time, didn't cool at all. Eventually drained itself to 0 because it wouldn't charge either. I couldn't charge it even after it was dead and cooled off. Had to do some trick to recalibrate battery... Something similar happend last week while at work, got really hot and started being very sluggish so I rebooted. Haven't been able to get it to recognize a charger, turn it on, or get that trick that worked last time to work again. So here I am on the N5 because apparently I killed my HTC one :( crap!! Thanks for the warning...haven't done this yet to the N5 but now I know not to! Wish I had known this sooner! Well maybe not...I do love my N5 :)
[Nexus 5 General] Polimante:
on my n5 all time it is 36~37ºC in use, 32~33ºC in non-use and 40+ºC on charging + moderate use...

Is this normal? Phone heat a bit fast when i'm using only fb or whatsapp... i think it is so strange, these apps is not too "heavy" to force battery so much
[Nexus 5 General] Elluel:
Not even warm.
[Nexus 5 General] Xami:
Are you like serious right now ? Damn. We have "Li-po" nit "Li-ion" battery and FYI I overcharge for like more than 8 hrs sometimes because I'm sleeping