Nexus 4 getting hot while on wireless charger?

planoman

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Yes. Warm not hot. My battery widget shows a battery temp of about 103 when charging.

Sent from my SAMSUNG-SGH-I317
 

Northovers

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YES!

In fact it gets so hot it shuts down. I am stock standard on update 4.2.2 and still does this. I initially thought it was the orb so purchased another Qi wireless charger with the same result. I am pulling my hair out over this :mad:. Like it's very very hot. Iam scared that it has donw some damage to the internals. And even after it has shut down it appears to continue to generate heat from the charging process. It has also behaved in this way using my USB charger on a couple of occasions but can't track it down to anything but at least on USB it hasn't shut down so the alarm HAS woken me in the a.m.:D

I have just today reset to factory settings my nexus to see if that will make a difference. If not then I will be sending it back for warranty repair. Will keep you posted

Any help or suggestions from helpful people would be much appreciated
 

carl109

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I just got a wireless charger from Kogan (Australia), it's Qi certified, but within an hour of my Nexus 4 being on there the back of the phone was remarkably hot. It never gets hot like this on cable charge.
I might return it out of concern it could damage the battery or internal processor.
 

as2003

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I just got one from kogan too. Arrived this morning. My Nexus 4 is also getting worryingly hot.

I might try putting a few sheets of card between the phone and charging pad to try and limit the rate of charging...
 

Paul Hofierka

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Got mine from Kogan today. Put the Nexus 4 on the charger when it was at 49% battery. I came back after about 45mins and it was boiling hot and it had turned off! I assume to protect it from overheating? I picked it up, restarted the phone and the battery level was at 47%! What a heap of junk! Phone overheats and doesn't charge so I'm not happy.
 

RumoredNow

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Inductive charging adds more heat than a traditional wired charge. I always leave the slider open to help heat dissipate when charging via induction.

Oh wait... That's my HP Veer and/or Palm Pre 2 on a TouchStone. :p

I'm still researching Qi charges for N4 and heat buildup is a bit of a worry. I would think the Nexus Orb holds an edge in that regard as it exposes more of the back to airflow than any flat on the desktop charger would be able to. If it causes so much heat the phone powers down then it is a very bad situation and is also likely to cause battery degradation as well.

Be sure the power input to the Qi puck is at the correct level by always using the included power supply, despite the temptation to mix and match cables, etc.
 

ledfrog

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I've noticed mine gets warm/hot in varying degrees and I think it has to do with how much charging is required to get it full. Also, there was a night where I placed the phone on there a little crooked and it seemed to be much warmer after a few hours of sitting like that. I'm not sure if the direction of the phone has anything to do with anything, but I figured I'd mention it. Also, just like some laptop power bricks get hotter than others, it could just be a matter of the quality of electricity in a particular outlet or power strip...I've even heard that improperly grounded plugs will cause power bricks to get warmer.

In any case, there's no direct answer, but anything shy of your phone getting so hot it melts or catches fire shouldn't be a worry. Like everyone else is saying, the transferring of energy wirelessly would have to generate a little more heat.
 

as2003

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In any case, there's no direct answer, but anything shy of your phone getting so hot it melts or catches fire shouldn't be a worry. Like everyone else is saying, the transferring of energy wirelessly would have to generate a little more heat.

Heat is bad for lithium ion batteries. I can't find any reliable sources right now - but I've read that you shouldn't let your battery get hot.
 

ledfrog

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I hope you can find that information because I've been wondering why my battery only gets hot sometimes even though I'm using the same charger, cable and wall plug.
 

wx27

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Your phone charges at different rates depending on the state of the battery charge. It will draw a lot of current from the charger until the battery is around 90% capacity, then taper off the current draw to a slower rate until you reach maximum capacity. You can see this on a graph if you have the battery monitor widget and check out either the current over time graph (mA/h) or the power consumption (mW/h) over time graph.

I've found through experience that if the phone's induction coil isn't perfectly centered with the inductive charger's coil, there is more excess heat generated and the amount of current provided to the phone is less than if the coils are lined up exactly.

With inductive charging, I find my phone will be anywhere between 103-108F. It's true that lithion ion batteries hate heat and that prolonged exposure to higher temperatures accelerate the decrease in battery capacity over time, though for me the extra heat from inductive charging is worth the convenience of not having to deal with the cord every time I want to charge. By the time the battery capacity has fallen enough to be a concern, we'll probably have moved on to the next Nexus...
 

jkuang180

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Same here, got 1 from Kogan, arrives yesterday, it gets warm but not charging at all. But it is alarmingly high, just warm. What concerns me is the not charging problem. Sometimes when I put it on, the charger light lit up but the phone is not responding, then sometimes the phone beeps and turns into daydream as it is charging but after a long time the battery level stay the same.

However, there is this one occasion this morning when I wake up and see that it stay at 50%, I put it back and about 35minutes, it increases to 65%, but that is the only time it actually charges, all other time it is just stay there, not going down or up.

I am on stock, unroot and with official bumper on( the one from Google Play, not that fake one from Kogan).


-------------UPDATE---------------

So, after review the user manual of N4 and assume that the induction coil of the Kogan Qi Charger is right underneath the "Qi" logo, I found the sweet spot. As long as you place your phone's induction area (the area between the Nexus Logo and LG Logo) over the "Qi" logo on the charger (charging mat if you will), you will be fine. So this will result in your phone slightly off centre a bit, vertically.

I just completed the first full charge just now, from 26% to 100%. About 2 hours or so, fairly close to the speed you plug in the USB cord.

Most importantly, this time the phone only got slightly warmer than unplugged(from the induction area), according to BatteryLife v1.3.3, it's about 35-36 Celsius during charging and now drops back to 30.7-8 Celcius, Room temperature is above 20 or so I think? Before hand when the phone was place on dead centre, the phone temp are much higher.
 
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Sonny Parks

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This happened to me ONE time and I simply powered the phone down and started up again. Has never occurred since.

Tmobile does recommend powering phones down once a week.....just to keep things in check as I am sure with the apps being installed, removed, alongside all the quirks we do with our phones everyday things can get a little haywire at times.