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[Q] Qi Wireless Charging and Overheating [TYLT VU Specific]

I purchased the Tylt Vu wireless charger for my N5 and N7. Last night, before I went to bed, I charged the N7. In the middle of the night, I switched out the N7 and charged the N5. When I woke up this morning, the phone was too hot to touch, and had been powered down (as designed, based on the heat). It took about 5 minutes before the phone was cool enough to power on.
A couple questions: Can such extreme (??) heat do permanent damage to the phone? Has anyone else had this problem with the Tylt Vu wireless charger? The phone wasn't off-center, and nothing appeared abnormal when I set it on the charger. I wonder if transitioning from the N7 to the N5 so quickly caused an abnormality?
[UPDATE (2/17):]
I haven't been following this thread, as I decided after my overheating incident to no longer use the Tylt Vu with my Nexus 5. I was also a bit turned off by the response I received from Tylt.
I take no credit for the following information, I am only summarizing this thread to save you time.
The Tylt Vu is defective. It contains three charging coils that help it to charge any device without having to be finicky about positioning. However, unless you set the Nexus 5 onto the Tylt Vu in a specific manner, the third (top) coil will remain activated, resulting in overheating due to the magnets present in the Nexus 5. (Oversimplified explanation... read the chain for specifics.)
The "right way" is to set the Nexus 5 down in the crevice of the Vu, perpendicular to the earth, and then pivot it down to rest on the back of the Vu. The wrong way is to slide it down the back, or otherwise set it on the Vu in a way where it is not touching the short base first. (See post #118.) You can also permanently disable the third coil by opening up the Tylt. All of this applies to charging the N5 in portrait mode.
A big thanks to NCguy for his persistence throughout the thread, to Mr. Sprinkles for his theory and relentless testing, to jelledgeu2 for the "solution", and every other poster who has shed some light on this. And a big 'no thanks' to Tylt for their response to the issue.
tl;dr: Always be vigilant on how you set the N5 on the Tylt Vu, or charge the N5 on the Tylt Vu at your own risk.

I have a Vu shipping now, I will report my experiences. Both of my boys have nexus 7's and will watch those too. Tyvm for the heads up...
Sent from my Nexus 5 using XDA Premium 4 mobile app

I haven't seen this behavior on any of my qi chargers including my tylt vu.
Sent from my Nexus 5 using Tapatalk

Were you able to successfully charge it before and this just happened the night when you switched from N7 to N5 ?. I don't think overheating damages any electronics because it is designed to shut off.

diasro said:
Were you able to successfully charge it before and this just happened the night when you switched from N7 to N5 ?. I don't think overheating damages any electronics because it is designed to shut off.
Click to expand...
Click to collapse
I can confirm that I have experienced this with the same set up (n5+TYLT VU), although I also have the Spiegen Slim Armour. This happened though only once, when I was at work and the phone was baked like a hot potato!
Since then I have been coy about leaving it on the charger unattended - I have checked the phone regularly since,. both after and during long charges - the problem has not happened again.

PearcePowers said:
I purchased the Tylt Vu wireless charger for my N5 and N7. Last night, before I went to bed, I charged the N7. In the middle of the night, I switched out the N7 and charged the N5. When I woke up this morning, the phone was too hot to touch, and had been powered down (as designed, based on the heat). It took about 5 minutes before the phone was cool enough to power on.
A couple questions: Can such extreme (??) heat do permanent damage to the phone? Has anyone else had this problem with the Tylt Vu wireless charger? The phone wasn't off-center, and nothing appeared abnormal when I set it on the charger. I wonder if transitioning from the N7 to the N5 so quickly caused an abnormality?
Sent from my Nexus 7 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Thanks for the heads up, as I am looking at purchasign the Tylt Vu.
The only thing I can say is that heat can definitely cause degredation of the battery. Besides that, there should be no signicant damage to the phone.

Thanks, everyone. I was able to charge both the N5 and N7 twice before without any troubles. I'm a little skeptical about leaving anything on it to charge unattended now -- my N5 was untouchably hot this morning. I've emailed Tylt to ask if they have any background/information on what could cause this to happen. I'll let you know if I hear back.
Sent from my Nexus 7 using XDA Premium 4 mobile app

i use the nexus orb charger at work and the LG 700 charger at home. While the phone can get a little warm, I certainly wouldn't consider it hot.
I'm not sure why your charger didn't turn off when reaching 100%

Nordendorf said:
i use the nexus orb charger at work and the LG 700 charger at home. While the phone can get a little warm, I certainly wouldn't consider it hot.
I'm not sure why your charger didn't turn off when reaching 100%
Click to expand...
Click to collapse
It never charged. The phone was at 70% when I put it on the charger. When I woke up, once I was finally able to boot it up, it was at 73%. It was scary hot.
Sent from my Nexus 7 using XDA Premium 4 mobile app

PearcePowers said:
It never charged. The phone was at 70% when I put it on the charger. When I woke up, once I was finally able to boot it up, it was at 73%. It was scary hot.
Sent from my Nexus 7 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
yes! I bought 2 tylt vu's from kickstarter and experienced exactly the same overheating problem. It was overnight and there was no charge on the battery in the morning with it still at 54% and very hot. It's possible that that the phone may have become mis-aligned on the charger but its unlikely. I just didn't happen to notice before I grabbed it off the charger. I can't explain how it happened and its only happened once....... so far.
In general the phone is alarming warm even when its working. The battery temp is usually around 110+ F even after it finishes charging. This compares with a battery temp of around 80F with the USB charger.
I'm not an expert but I'm thinking that the battery heat is not being generated by the battery itself internally but possibly by a heat transfer as a result of the induction. If that is in fact the case then maybe the warmer battery isn't as bad as it would be if it were in fact generated internally in the battery as is typically the result of a high charge/discharge rate.
So my concerns are two fold, the one-time completely unacceptable high overheating and the ongoing situation where it is always 20-40 degrees higher while on the tylt than it would be plugged into the USB charger.
I wouldn't be too concerned except that replacing a battery in an N5 is not like replacing a battery in a phone with a removable battery.

Wow... I wasn't expecting two people to have had identical experiences. Slightly concerning, however, it sounds like it's only happened once for each of you (NCguy, Drizwaldo1). I hesitantly charged my N5 again on it tonight. I watched it closely and pulled it off when it hit 100%. No problems, and only moderately warm (as is typical for wireless charging). I would chalk this morning's incident up to a fluke and forget about it if the phone hadn't been so insanely (explosively!?!) hot this morning...

I have a tylt but I have not tried it yet on the N5. I use a Nokia qi charger primarily and have not had an issue. Only have the phone since the 8th. I just got a spigen case. Let's see how that works out.
Sent from my Nexus 5 using xda app-developers app

Are you guys at all concerned about premature battery wear with the battery temp 20-30 degrees higher than the usb charger? That's when its working "normally" and with a tylt.

NCguy said:
Are you guys at all concerned about premature battery wear with the battery temp 20-30 degrees higher than the usb charger? That's when its working "normally" and with a tylt.
Click to expand...
Click to collapse
I'm not overly concerned about it, primarily because I get a new phone almost every year and expect the stock battery to be sufficient for at least that amount of time even with degradation. Worst case scenario, it doesn't sound like it would be hard to swap it out (based on iFixit's assessment). I'm more worried about doing irreversible damage to the internal components if it overheats again like it did on the Tylt.
Sent from my Nexus 7 using XDA Premium 4 mobile app

NCguy said:
Are you guys at all concerned about premature battery wear with the battery temp 20-30 degrees higher than the usb charger? That's when its working "normally" and with a tylt.
Click to expand...
Click to collapse
My Nexus 4 got a lot warmer on the Qi charger than my N5 does, and it's battery showed no ill effects. So no, I'm not worried about my N5.

I just purchases the Vu charger as well to pair with my Nexus 5 and 7. I hope the overheating thing isn't common... I'm a bit worried.
Please continue reporting. I'll do the same once I receive my Vu.

Wow, thanks for the Headsup!
I was quite close to buying the Tylt vu despite the very high price tag.
Hope not all qi chargers have this issue.
Sent from my Nexus 5 using Tapatalk

Rusty! said:
My Nexus 4 got a lot warmer on the Qi charger than my N5 does, and it's battery showed no ill effects. So no, I'm not worried about my N5.
Click to expand...
Click to collapse
I hope you're right. I'll probably go for it also. Hopefully I won't have to do an ifixit battery replacement but it doesn't look too awfully bad if it comes to that. I keep them a year but then usually pass on to my wife who would rather not be leading edge. I probably should give it to her with a decent battery. Unfortunately non-removable batteries s##k.

Found a post on another forum about the N4 doing the same thing (got so hot it shut off, never charged), he said resetting the phone cured it. Sounds like a software glitch to me.

any new updates or issues that has occurred? I have my tylt coming in a few days and wondering if I should just return it for the DT-900.

Post your Qi charging battery Temp

My tylt Qi charger heats my battery to 110F (updated). Ive been told that for some reason all Qi wireless chargers heat the battery this much in this particular device.
Please tell us your charger and max battery temp during charge. There are a lot of apps that will tell you max battery temp and here is the one I use
https://play.google.com/store/apps/details?id=com.fsinib.batterymonitorpro
Please charge from at least 50% down and give us the max temp during charge as opposed to the final temp at the end.
111F, 44C nokia dt 9000
110F, 43C tylt vu
106F, 41C koolpad
102F, 39C choe
102F, 39C google LG stock
102F, 39C DT-910
093F, 34C generic (need longer test)
090F, 32C ravpower (need longer test)
Thanks to everyone reporting so far!

NCguy said:
My tylt Qi charger heats my battery to 108F. Ive been told that for some reason all Qi wireless chargers heat the battery this much in this particular device.
Please tell us your charger and max battery temp during charge. There are a lot of apps that will tell you max battery temp and here is the one I use
https://play.google.com/store/apps/details?id=com.fsinib.batterymonitorpro
tylt vu max 108F
Click to expand...
Click to collapse
ive heard complaints about overheating nexuses but mine only get up to around 34degree C which is something like 90deg F. that's with a case on the phone as well. i read a little about the Qi standard and the phone is supposed to command charging current so external interference or losses in the reciever coil don't cause the charge current to be lower than the the transmitter is regulating. so maybe some batteries are subject to inductive heating, maybe some phones have a short in the reciever coil. but mine charges to 100% and never gets hot....

I was charging with a Nokia DT 9000. Threw it on at 30 percent. A few hours later I felt it with my hand and it was rather warm so I checked the temp and it was 44C so I pulled it off.
Edit: in a Ringke slim case
Sent from my Nexus 5 using Tapatalk

Dani897 said:
ive heard complaints about overheating nexuses but mine only get up to around 34degree C which is something like 90deg F. that's with a case on the phone as well. i read a little about the Qi standard and the phone is supposed to command charging current so external interference or losses in the reciever coil don't cause the charge current to be lower than the the transmitter is regulating. so maybe some batteries are subject to inductive heating, maybe some phones have a short in the reciever coil. but mine charges to 100% and never gets hot....
Click to expand...
Click to collapse
34C is actually a bit over 93F, but much cooler than I have seen reported so far. Which charger and what temp reporting app?

ravPower charger. Went from 80% to 100% in 40 minutes. So half as fast as the stock USB wall charger but still better than I thought it would do. Temp never exceeded 90 degrees.

ok, seems the battery actually cooled while i was installing the app. i installed smart battery monitor. since i posted that, it went up to just under 96 degrees F.still no 108 degrees. but it has been on the charger for over 30 min strait and wasn't off the charger for long before that.
either way i have no problems with heat on my phone, it never feels much warmer than other phones ive had on usb chargers. the charger i'm using is a generic chinese charger. the box has no name brand. i also have a samsung charger but haven't checked the temperature with it. it doens't seem any different.
http://www.amazon.com/Lerway-Wirele...TF8&qid=1385521087&sr=8-2&keywords=qi+charger

Dani897 said:
ok, seems the battery actually cooled while i was installing the app. i installed smart battery monitor. since i posted that, it went up to just under 96 degrees F.still no 108 degrees. but it has been on the charger for over 30 min strait and wasn't off the charger for long before that.
either way i have no problems with heat on my phone, it never feels much warmer than other phones ive had on usb chargers. the charger i'm using is a generic chinese charger. the box has no name brand. i also have a samsung charger but haven't checked the temperature with it. it doens't seem any different.
http://www.amazon.com/Lerway-Wirele...TF8&qid=1385521087&sr=8-2&keywords=qi+charger
Click to expand...
Click to collapse
30 mins is not long enough to test it. You need to let it go from about 50% or less to full. The battery temp will vary a lot depending on the full capacity. My software captures the highest temp achieved during the charge because as it reaches full it will already start cooling down. You need to look at a temp graph of the entire charge cycle.

I just received my Nexus wireless charger and installed the free version of the app the OP linked, will charge overnight and see what the app says.

NCguy said:
30 mins is not long enough to test it. You need to let it go from about 50% or less to full. The battery temp will vary a lot depending on the full capacity.
Click to expand...
Click to collapse
Sure it's enough. If you plan on charging from 50% or less to full then your battery will get hotter. Wireless or wired. It's just how charging works. More time=more heat. Your still well within the safe zone at 110 though.
http://www.mpoweruk.com/lithium_failures.htm

theesotericone said:
Sure it's enough. If you plan on charging from 50% or less to full then your battery will get hotter. Wireless or wired. It's just how charging works. More time=more heat. Your still well within the safe zone at 110 though.
http://www.mpoweruk.com/lithium_failures.htm
Click to expand...
Click to collapse
Then why not charge it for 10 seconds? I'm just trying to get in a full charge cycle to see the max temp. And actually at the end of the cycle your temp should go down due to the way lithium chargers scale down at the end of the cycle. So charging a 95% full battery wouldn't tell us much.
Your linked article says damage starts to occur at 120F. Well, that depends entirely on the particular battery formulation. It's not something you can generalize. Lithium batteries are definitely not all the same. What you can generalize is that more heat means more wear even when below the damage threshold for the specific battery.

37-39°C from ~10% to 100% :good:

NCguy said:
30 mins is not long enough to test it. You need to let it go from about 50% or less to full. The battery temp will vary a lot depending on the full capacity. My software captures the highest temp achieved during the charge because as it reaches full it will already start cooling down. You need to look at a temp graph of the entire charge cycle.
Click to expand...
Click to collapse
the phone was charging for an hour before that and it wasn't off the charger for "that" long. i'm not paying for an app i plan to use once and delete. sorry. i found a free app that will log it. i'll post results in the afternoon but the phone has never ever been warm enough for concern or even a second thought.

roli006 said:
37-39°C from ~10% to 100% :good:
Click to expand...
Click to collapse
Which charger are you using?

Dani897 said:
the phone was charging for an hour before that and it wasn't off the charger for "that" long. i'm not paying for an app i plan to use once and delete. sorry. i found a free app that will log it. i'll post results in the afternoon but the phone has never ever been warm enough for concern or even a second thought.
Click to expand...
Click to collapse
Thanks for your help. There's a free version of the app I linked and I also mentioned that there were many apps available that measure battery temp. I certainly wasn't try to get anyone to purchase that app. I simply made the link available because that was what I personally was using. If someone comes up with one that has better graphics please link it as I didn't have time to evaluate all the apps in this group.

NCguy said:
Which charger are you using?
Click to expand...
Click to collapse
I bought this for 30€ (~40$)!
http://www.amazon.de/induktive-Lade...TF8&qid=1385559057&sr=8-4&keywords=B00E5D70ME
It is small and has a rubberized ring and the phone stays in position! I can also lay a small bag between the charger and the phone (http://www.amazon.de/fitBAG-Handyta...qid=1385559718&sr=8-2&keywords=nexus+5+fitbag). The only disadvantage is that you need your own power supply unit for this!
I think the product is identical with this on amazon.comhttp://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias=aps&field-keywords=qi t-200

Official Google/LG wireless charger, phone was on it all night last night and highest temp reported was 101.5F and today while on subway and or roaming my battery temp hit 102.6F. This is with the bumper case on and phone in my shirt pocket under a jacket. I am inclined to think that if the phone gets that warm when roaming or searching then the charge temp is just fine.

Raistlin1 said:
Official Google/LG wireless charger, phone was on it all night last night and highest temp reported was 101.5F and today while on subway and or roaming my battery temp hit 102.6F. This is with the bumper case on and phone in my shirt pocket under a jacket. I am inclined to think that if the phone gets that warm when roaming or searching then the charge temp is just fine.
Click to expand...
Click to collapse
That charging temp doesn't seem too bad to me as compared to the data from the other chargers reported so far. Keep in mind that high battery temp as a result of charging is much worse than rise due to ambient or discharge.
I think the jury is out as to how much affect high charge temp will have on the Nexus 5 battery. No one seems to have any specs and I think experience is going to be the only way to really know. I think we can safely say the temp rises significantly more than with the usb charger.

from what i've read about Qi i dont thnk the problems are with chargers unless they are just ignoring the charge controllers requests to lower current. the 5w charge power is supposed to be regulated by requests from the receiver (phone). so if the phone is heating it may be a phone defect like a short in the coil causing eddies and heating the coil. but i guess there can be factors with the charger...
ok second (this time proper) test with my generic chinese $18 charger.
30-37deg C, graphed out with Battery Info app. 27%-100% screen on the whole time with the phone in a case. thats almost a worst case scenario.

I get around 40 °C (104 °F) with either the TYLT VU or the Koolpad. I usually start at around 50% SOC and it peaks at around 90% SOC. After that the temperature drops a few degrees. I attached a typical profile with the Koolpad.

stbxxl said:
I get around 40 °C (104 °F) with either the TYLT VU or the Koolpad. I usually start at around 50% SOC and it peaks at around 90% SOC. After that the temperature drops a few degrees. I attached a typical profile with the Koolpad.
Click to expand...
Click to collapse
Looks like 41C on the chart. Do you have a chart you can post for the tylt?

[Q] Nexus 5 INSANELY Hot to the Touch When Wireless Charging

I'm wondering if anyone else has run into this or has any ideas as to what may be happening...
I've been charging my Nexus 5 wirelessly at home and at work with my TYLT VU wireless charger. The N5 is listed as compatible on the Tylt website, so I don't think that is the issue. It has been charging successfully overnight since I got the phone about 3 weeks ago. However, for the last two days, I wake up to find the phone has stopped charging at 80% and 84% yesterday and today, respectively. Also, the phone is INSANELY hot to the touch, to the point that it is unsafe to hold. I have to set it aside to cool for a few minutes before I can handle it.
Yesterday, I thought it was a one time glitch, and that I hadn't placed the phone properly in the charger. But last night I was careful to lay it in the charger so the green light activated. No improvement, same result.
Notes:
- The phone is in a Spigen case
- I do NOT have Developer Options enabled
- Stock Android, locked, unrooted
- YES, the screen times out after about 2 minutes (does NOT stay awake)
Any ideas? I'm really worried about the phone getting this hot and not charging.

Lipmonger said:
I'm wondering if anyone else has run into this or has any ideas as to what may be happening...
I've been charging my Nexus 5 wirelessly at home and at work with my TYLT VU wireless charger. The N5 is listed as compatible on the Tylt website, so I don't think that is the issue. It has been charging successfully overnight since I got the phone about 3 weeks ago. However, for the last two days, I wake up to find the phone has stopped charging at 80% and 84% yesterday and today, respectively. Also, the phone is INSANELY hot to the touch, to the point that it is unsafe to hold. I have to set it aside to cool for a few minutes before I can handle it.
Yesterday, I thought it was a one time glitch, and that I hadn't placed the phone properly in the charger. But last night I was careful to lay it in the charger so the green light activated. No improvement, same result.
Notes:
- The phone is in a Spigen case
- I do NOT have Developer Options enabled
- Stock Android, locked, unrooted
- YES, the screen times out after about 2 minutes (does NOT stay awake)
Any ideas? I'm really worried about the phone getting this hot and not charging.
Click to expand...
Click to collapse
its probably your charger. mine gets warm but nothing insane. i charge during the day in my cube and typically have a full charge when i leave, and it lasts all night till i get back to work. so i basically sit by my charging phone all day and its never really caused me any concern. i have a knock off "qi compatible" charger from ebay. works great for $20

Holy s*it that thing is expensive. Sounds like there is a process that is getting triggered by charging and running the cpu to 100%. Think about a new app installed since heating started. Ordered 2 of these with no odd heating of device.
Off topic: What would developer options being enabled or disabled have to do with wireless charging? (just wondering)
good day.

Have you tried it out of the case? Maybe it's not vented properly in it
Sent from my Nexus 5 using Tapatalk

I saw several comments about this very thing in a qi charging thread after the phone started to ship and they all used that charger. Most said it ended up being a one or two time thing but the charge you mention was common to all the situations. I suggest getting better battery stats from XDA and then check it after charging. Also try charging in short half and hour to one hour time frames until you know it is not truth so hot.
Sent from my Nexus 5 using Tapatalk

Mine doesn't get noticeably warmer charging on the Nokia Qi plate than it does over USB. Maybe you should contact Tylt.

chopper the dog said:
Off topic: What would developer options being enabled or disabled have to do with wireless charging? (just wondering)
Click to expand...
Click to collapse
Developer Options is where the "stay awake while charging" setting is. I just wanted to make it clear that I didn't have that setting enabled. That's all.
Ben36 said:
Have you tried it out of the case? Maybe it's not vented properly in it
Click to expand...
Click to collapse
I haven't yet. Thanks for the tip! I will try this tonight and report back...
Valdeck said:
I saw several comments about this very thing in a qi charging thread after the phone started to ship and they all used that charger. Most said it ended up being a one or two time thing but the charge you mention was common to all the situations. I suggest getting better battery stats from XDA and then check it after charging. Also try charging in short half and hour to one hour time frames until you know it is not truth so hot.
Click to expand...
Click to collapse
Thanks for this info... I will try it out and see what happens.
Thanks for all of the help everyone, hopefully this was just a random incident. It's charging fine now at work: on the VU, in the case, at 100%, no overheat. Weird. I'll try it again overnight tonight and see what happens.

Or maybe the case causes the heat because of the added distance between the charge pad and the coils in the phone? Dunno if that's possible tho? Lol
Sent from my Nexus 5 using Tapatalk

There's something about that Tylt Vu charger that sometimes doesn't recognize when the phone is fully charged and go into trickle-charge mode, as it should. (Although I've never heard a conclusive answer as to why the battery is usually found at a low charge percentage, so there may be another reason.) There are numerous reports of overheating with that specific charger. It doesn't happen all the time, and in fact, many people report that it works fine for weeks, then one day it does this, then works fine for weeks again. Still, it's a VERY common problem with that charger, and it only takes one time overheating to damage your battery.
I'd contact the manufacturer and see what they'll do about it (refund, working on a fix, etc.). In the meantime, you could try the Nokia DT-910. It's a similar stand-up type charger, and doesn't seem to suffer from the same problem.

chopper the dog said:
Holy s*it that thing is expensive. Sounds like there is a process that is getting triggered by charging and running the cpu to 100%. Think about a new app installed since heating started. Ordered 2 of these with no odd heating of device.
Off topic: What would developer options being enabled or disabled have to do with wireless charging? (just wondering)
good day.
Click to expand...
Click to collapse
thats what i have as well

Lipmonger said:
I'm wondering if anyone else has run into this or has any ideas as to what may be happening...
Click to expand...
Click to collapse
Come join our club. If you're lucky, it only happens once.
http://forum.xda-developers.com/showthread.php?t=2522361

PearcePowers said:
Come join our club. If you're lucky, it only happens once.
http://forum.xda-developers.com/showthread.php?t=2522361
Click to expand...
Click to collapse
Glad I'm not alone. Thanks for the link.

I realize this thread is old but this happened to me last night. I woke up this morning to my Nexus 5 shut off (it was turned on when I placed it on the charger) on the Tylt Vu charger and when I picked the phone up I couldn't hold it comfortably. It physically hurt to hold my finger on the screen. I have never felt a phone that hot before. I would imagine it shut down due to heat but shutting it down didn't stop it from continuing to charge in some sort of error state.
I am done with wireless charging. I am actually curious what would have happened if I had left it all day. I truly believe I'd have ruined my phone or started a fire.

My wireless TYLT charger almost melted my N5...

I set my N5 on my charger (it was at 90%) after lunch and then walked away from my desk. I got back to my desk and saw the LED blinking from a text message so I turned the screen on and realized it was SUPER hot and the charge was only at 81% even though it had the lightning bolt over the battery icon as if it is charging.
Has anyone else had this happen and should I be worried it damaged my phone?? The phone was almost too hot to handle, so I turned it off immediately in hopes it would cool down faster/reduce the harm to hardware.
I've been using the charger without any issues for over a month now, but this might be the last time I trust it.

bekyndnunwind said:
I set my N5 on my charger (it was at 90%) after lunch and then walked away from my desk. I got back to my desk and saw the LED blinking from a text message so I turned the screen on and realized it was SUPER hot and the charge was only at 81% even though it had the lightning bolt over the battery icon as if it is charging.
Has anyone else had this happen and should I be worried it damaged my phone?? The phone was almost too hot to handle, so I turned it off immediately in hopes it would cool down faster/reduce the harm to hardware.
I've been using the charger without any issues for over a month now, but this might be the last time I trust it.
Click to expand...
Click to collapse
This is a known issue with the TYLT and the N5: http://forum.xda-developers.com/showthread.php?t=2571188
You can try turning off Day Dream. This will help some.

my cheap ass 21$ Qi charger never does this check it out
http://forum.xda-developers.com/showthread.php?t=2585159
youtube video attached

I'm really curious as to what's causing this because I've been using the TYLT daily for a few weeks and my phone doesn't even get warm. Kinda nervous to continue using it though.

Wireless charging already can heat up the phone by a few more degrees then using a wire.
People are then doing things such as Daydream or simply running apps which are causing the phone to have a high current draw which could potentially cause issues such as:
-using more power then is being provided
-getting very hot from being both used and charged at the same time.

Welp. Unfortunately, it looks like I can be added to the list of those who have been "burned" by the Tylt Vu. I've been using two different ones for about two weeks now with no issues at all. The hottest my N5 would ever get would be around 37C (but it would usually hover around 34-35C). I've been keeping an eye on the battery temp since reading all these horror stories of overheating. Tonight, it was charging fine when I picked my phone up to check a text and mess around for a couple minutes. When I put it back on, it was probably around 37-38C or so. I was sitting next to it and touched the screen to check the temp, and it felt REALLY hot (only about 5-10 minutes after setting the phone back down to charge). So I took it off and the battery temp was showing 49.5C with "health" saying "overheating". I always make sure the screen is turned off after putting it on the charger, so I know it wasn't in daydream or anything. Kinda freaked me out. I love these chargers, but my faith in leaving them unattended while charging is now shaky at best.

charesa39 said:
Welp. Unfortunately, it looks like I can be added to the list of those who have been "burned" by the Tylt Vu. I've been using two different ones for about two weeks now with no issues at all. The hottest my N5 would ever get would be around 37C (but it would usually hover around 34-35C). I've been keeping an eye on the battery temp since reading all these horror stories of overheating. Tonight, it was charging fine when I picked my phone up to check a text and mess around for a couple minutes. When I put it back on, it was probably around 37-38C or so. I was sitting next to it and touched the screen to check the temp, and it felt REALLY hot (only about 5-10 minutes after setting the phone back down to charge). So I took it off and the battery temp was showing 49.5C with "health" saying "overheating". I always make sure the screen is turned off after putting it on the charger, so I know it wasn't in daydream or anything. Kinda freaked me out. I love these chargers, but my faith in leaving them unattended while charging is now shaky at best.
Click to expand...
Click to collapse
When it happened to me I never turned the screen on during charging either.
And for the record I have never used the Daydream feature :-/
I was excited at first of the premise of wireless charging particularly to cut down on wear and tear to the micro USB port, but now I'm back to the old fashioned way.

My S7 startet a small fire at the charging port. Did anyone else experience that?

It was not the battery but at least the charging port burned during fast charge.
I was using the officially supplied Fast Charger which came with the phone.
Seems the phone got so hot that it switched off. The phone was lying on the carpet while it happend. Luckily it didn't lit the carpet next tpo my bed while I was sleeping...
I've put detailed info into this video:
https://www.youtube.com/watch?v=GxeYSV8toXA
Samsung picked up the phone today, waiting for their reply.
As far as I know there was no damage on the phone prior to the event. Even the Liquid Damage Indicator is ok.
The Phone was 6 month old.
Should I better use wireless charging overnight in the future? Any experience?

AirHH said:
It was not the battery but at least the charging port burned during fast charge.
I was using the officially supplied Fast Charger which came with the phone.
Seems the phone got so hot that it switched off. The phone was lying on the carpet while it happend. Luckily it didn't lit the carpet next tpo my bed while I was sleeping...
I've put detailed info into this video:
https://www.youtube.com/watch?v=GxeYSV8toXA
Samsung picked up the phone today, waiting for their reply.
As far as I know there was no damage on the phone prior to the event. Even the Liquid Damage Indicator is ok.
The Phone was 6 month old.
Should I better use wireless charging overnight in the future? Any experience?
Click to expand...
Click to collapse
Scary
I would not charge that phone in any possible way...just in case
Let us know what they tell you when you get the phone back

yea i would use a wireless charger because i think the rubber protection near the charging port gets weaker after months of use with the normal charger. You can buy a fake wireless charger for 12 bucks on aliexpress.

Wow, things are not good with Samsung and their exploding / catching fire phones, this is slightly worrying that it's happened with an S7
Lucky that it did not go any further than the charging port, especially if it was on the carpet
Perhaps it overheated because the back of the phone was on the carpet and not a solid surface where heat could escape, but they should not catch fire, just overheat and shut off charging and power
Keep us updated with what Samsung tell you, I don't fancy this happening to mine

*Detection* said:
Perhaps it overheated because the back of the phone was on the carpet and not a solid surface where heat could escape, but they should not catch fire, just overheat and shut off charging and power
Click to expand...
Click to collapse
It lay down with the display-side to the carpet. It was the same way as every night. Floor-Heating is still off at this time of the year. Room temperature in our sleeping room is around 18°-19°C (~ 65°F)
So this should not create a heatspot. And I never noticed that the phone was so hot that I was afraid it might catch fire.

AirHH said:
It lay down with the display-side to the carpet. It was the same way as every night. Floor-Heating is still off at this time of the year. Room temperature in our sleeping room is around 18°-19°C (~ 65°F)
So this should not create a heatspot. And I never noticed that the phone was so hot that I was afraid it might catch fire.
Click to expand...
Click to collapse
No, that definitely should not have caused it to overheat
I hope Samsung are honest with you about the reason for the fault
And tbh, it doesn't seem like an overheating problem, it sounds more like whatever the fault was, caused the battery to overcharge and overheat
I think you are very lucky this didn't cause another battery fire

Are you using the "fast-charging" option? I would recommend disabling that,

This was my main concern since I bought my s7 in july. I noticed that when it's charging with regular 2A/5V option, the plastic on the port which goes into phone gets warm. On fast charging it doesn't get warm, because the voltage is higher, but amperage is 1.60A.
Does anyone else have this "problem", or should I replace my cable? I don't want to end up with a fried port too.

since the spot of where it burned is at the contacts it was probably just a short because moisture between the contacts or maybe conductive debris got in there.
also its normal for the battery to warm up during peak charge.