yashsingh1/xdaforums huggingface dataset:
[Nexus 4 Accessories] mobilehavoc:
My charger is on nightstand that sits at ear level when I'm in bed and I hear a clicking noise only then. Its normal now let's move on.
[Nexus 4 Accessories] Nexus-Six-:
Well, the words used to describe it were 'quiet', 'very quiet' and 'faint'. I also said it happens when idle...

It's a wired noise to hear from a charger, but it certainly looks like it's normal, so nothing to worry about.

Not sure what you're so up tight about... but let's move on.
[Nexus 4 Accessories] neb001:
The max peak I saw using the energizer charger and tracking the current using battery monitor widget was 765mA, you can see the log in this post here For what it's worth, the energizer also ticks, but it does that even when it's not charging. I think I'll try damping the sound using either some hot glue or epoxy.
[Nexus 4 Accessories] ericshmerick:
The seller on Amazon has NO shame. This product was in a zombie state pre-Nexus 4. Was like $29. They could hardly give them away because nobody wanted them. The came the Nexus 4.It went to $39, then $49, now it's $59.

I'd just wait on the orb just out of refusal to give the seller my money.
[Nexus 4 Accessories] bleuiko:
Yeah, the prices has been going crazy. I called my local Verizon stores and none of them have the LG wireless charging pad. =(

---------- Post added at 06:10 PM ---------- Previous post was at 05:51 PM ----------

Who did you buy from?
[Nexus 4 Accessories] leroy_sunset:
I've got one on the way to my local Verizon store. $50. Anyone have a coupon they can point me to? I hear Verizon offers them to customers.
[Nexus 4 Accessories] mrbkkt1:
Perfectly is the best way to describe it. Beep isn't too loud IMHO, charges fairly fast and only $50.

Also, don't bother calling, you gotta just go in. I called 3 Verizon stores, and got the not in stock. Went to 2, one said they sold the last one earlier in the day and the other had one left.

Weird thing is the charging pad kind of looks like a galaxy note 2. My daughters think it's a phone.
[Nexus 4 Accessories] A-Squared:
Agreed.

Agreed. And we don't all have the same sensitivity in our ears, we should keep that in mind. I definitely hear the clicking, and I hear it in two WCP-700 chargers and one Energizer charger, so it's definitely there and I hear it at work and at home, 20 miles away from each other, so it has nothing to do with the "power coming in".

---------- Post added at 08:01 AM ---------- Previous post was at 07:58 AM ----------

I have noticed a substantial increase in battery temperature (~6-10*C over USB) using both the Energizer and the LG WCP-700 chargers...

---------- Post added at 08:06 AM ---------- Previous post was at 08:01 AM ----------

I haven't measured the charging current (good idea!!) but if you take a look at the temp/charging data I posted in Post 35, it can be inferred that the charging current is substantially lower when charging wirelessly :(

I have my Energizer pad at home. I'll bring it to work tomorrow and post some more charging data tomorrow...
[Nexus 4 Accessories] ozmotion:
How would you measure the charging current? Wouldn't you need to either take the phone apart, or build a receiving coil identical to whats in the phone?

By the way, the noise issue is weird. I had a touchstone inductive charger for my palm pixi and hp touchpad, and neither had any click noise that I could hear.
[Nexus 4 Accessories] A-Squared:
By Using An App... :)

Well I wouldn't measure charging current directly, I would report charging current as reported by an App.

Check this thread out (specifically Post #39) for some charging current, battery temperature, battery voltage, and charge % data :)

Thread:

http://xdaforums.com/showthread.php?t=2022562

Post 39:

http://xdaforums.com/showpost.php?p=35249751&postcount=39
[Nexus 4 Accessories] neb001:
I use an app to read the values reported by the phone; in particular the app I personally use is the Battery Monitor Widget Pro. The non-pro version is free. You do have to take the values with a grain of salt though, because not all phones properly report the charging current but as long as it mostly agrees with the voltage levels I am willing to accept the values as given (for the most part).
[Nexus 4 Accessories] ozmotion:
Thanks. That should be fine for this purpose.

I dont get why an inductive charger should be any less quick of a charger than a wired charger. Sure, it's less efficient, but why not just boost the power as appropriate to match the wired charger. I guess to stay on the safe side of heat issues. They should just use a thermocouple to manage that, theyre cheap!
[Nexus 4 Accessories] dispatch:
My WCP-700 doesn't click (FTR I bought it at a Verizon kiosk). I have it on my nightstand and I cannot hear it (my head rests within 3 feet of it) in any configuration (on without phone, on charging phone, on phone charged). I cannot hear it even when putting it up to my ear. It does of course, beep when charging starts.

As for it's speed and heat, I did not conduct any tests, but:

it's "fast enough" (e.g. I didn't notice a big difference in speed vs. AC charging), and I usually just let it sit on the pad overnight. Works great. When pad is charging the phone, the phone gets a little warm (regardless of whether it's daydreaming or not) but only about as hot it gets when the screen is on for an extended period of time. When the phone is charged but still on the pad, the phone is not warm.
[Nexus 4 Accessories] neb001:
There's already a thermocouple in the phone, the battery sensor. It's the same one used to throttle the chip (37C I think for the Nexus 4, 43C for the Optimus G I believe) so I'm not sure it's wise to bump up the current which would result in even higher temps. We're already seeing quite a few folks complain about the heat as it is already.

I'll have a chance to do a USB/AC charge tonight from empty and then I will be able to do some comparisons. From looking at my battery logs it doesn't look like wireless takes all that much longer to charge. To me, it seems like both the heat and the time to charge are fine. We'll see later tonight I guess :p
[Nexus 4 Accessories] 320flyboy320:
Here is a log charging my N4 from about 45% to full in about 2 hours on my LGWCP-700. Hottest it got was 40ºC. I'll do a log of charging it with my USB charger to compare the temperature. Seems the charging time is good enough, just want to get a handle on the temperature when charging since high temps can damage batteries (how high is to high I don't know).
[Nexus 4 Accessories] Nordendorf:
The ebay guy listed in this thread. Looks like he bought 150 or so of the OEM (in the crappy box). I got ripped off on shipping (7$ to me, $18 to send back), so this is turning out to either be $25 down the drain if he refunds, or a $75 charger if he sends me a replacement.

:(
[Nexus 4 Accessories] sn0warmy:
Has anyone confirmed if this works with the bumper installed? I'm assuming it will but wanted to double check.

---------- Post added at 01:49 PM ---------- Previous post was at 01:48 PM ----------

40ºC is only 104ºF which really isn't that hot for an electronic device so I'd imagine this should be well within the realm of "safe". Especially considering that the phone was already at 30.1ºC (86.18ºF) before you even started charging it. But I'll be curious to see your results from USB charging. Thanks for taking the time to do this.
[Nexus 4 Accessories] Jayrod1980:
Works great with bumper and tpu cases. No clicking or noise from mine either.

BTW... You guys complaining about a device that cant make a sale going from $29 to $59 when it is the only option pretty much for one of the hottest phones on the market (droid DNA has wireless charging too) make me cringe. If the price never changed it wouldn't ever be available. Stop being so entitled. The device was always available from Verizon (if you are in the us of course) for $50 and you could have bought it from them at any time. When I got mine from amazon it was $47 before shipping. Well worth it to me... Otherwise i wouldn't have bought it!
[Nexus 4 Accessories] A-Squared:
Data...

I already did this...

Check my post in a different thread titled "Inductive Charging Heat"

http://xdaforums.com/showpost.php?p=35112156&postcount=38

I have time / charge% / temp data for Wireless and USB.

Same ambient temp, same radio status, no DayDream, etc. etc.
[Nexus 4 Accessories] Nitemare3219:
I love this charger, but I have an issue with using it at night. I use my phone as an alarm, and when the device is placed on the charger, the speaker is covered making it very quiet. I have somewhat remedied this by orienting the device sideways slightly so the speaker/corner of the device is in the air (center section of the charging pad is recessed making this possible). While this makes it more audible, it is not a good solution.

I have a bumper case ordered, so hopefully that solves the problem (however if it creates a perfect seal around the phone and charging pad it won't), but does anyone have any other resolution in the mean time?
[Nexus 4 Accessories] cramu:
When I bought mine, a week ago, he had more then 500 in stock.
[Nexus 4 Accessories] mrbkkt1:
Lol, I tried flipping the phone over, no go. Put a little chunk of a used chopstick to prop the bottom up by a quarter inch. Should he just right.

Edit: I just tested the alarm, even with a case it's loud enough to wake you up easily.
[Nexus 4 Accessories] 320flyboy320:
So here are the two log files from charging. One from the wireless pad (LG), and the other from the stock USB cord. It seems the USB charges slightly faster, but more importantly, much cooler. The max temp from the wireless pad was 42.6ºC, and from the USB charger was 26.9ºC.

First one is the wireless charger

This one form the USB charger
[Nexus 4 Accessories] nm3th:
delete
[Nexus 4 Accessories] Nexus-Six-:
Thanks for the data.

See this post for my thoughts on wireless charging heat:

http://xdaforums.com/showthread.php?p=35365554
[Nexus 4 Accessories] A-Squared:
LoL!!

LoL it would be cool to merge these threads wouldn't it? I'm also posting in both LoL!! I think both threads are dealing with a similar topic fundamentally... Anyway, for now I'll keep checking both :)

---------- Post added at 08:38 AM ---------- Previous post was at 08:33 AM ----------

DUDE, my thoughts exactly... I am not comfortable at all with the wireless temps... If it were consistent, then I wouldn't mind and would just stick to USB.

BUT, the problem is that some users of the Nexus 4 are not reporting these temperatures issues... AND, I know two people with Galaxy S 3's that charge wirelessly with the LG WCP-700 without insane temperature increases and at almost the same rate as USB (Nexus 4 and GS 3 have very similar power requirements and battery capacities so I think it's a fair comparison... So it's these discrepancies that lead me to believe that there is something wrong here...
[Nexus 4 Accessories] Naimand:
Do you think it's because the N4 has a glass back and the S3 has a plastic back? As far as the temperatures go I mean.
[Nexus 4 Accessories] A-Squared:
Interesting point...!

Interesting point... The thermal conductivity of glass can be assumed to be generally 2-3 times that of plastic, depending on the plastic of course! I don't know exactly what plastic is used in the construction of the GS3 back cover (HDPE, LDPE, ABS, I have NO idea...), so 2-3x is a general estimate.

But even so, I would only expect the Nexus 4 to then be marginally warmer than the Galaxy S 3. From what my Uncle has told me regarding his Galaxy S III charging wirelessly, it doesn't really get very warm at all (certainly not 38, 40, 42*C like myself and others have reported).

Good point, and good observation, but the question that remains unanswered is why the difference between different Nexus 4 devices??

Specifically, see phermey's post (#57) where he describes his phone as being hot at first but then only being warm after he rooted and flashed aokp to his Nexus 4...

Post #57:

http://xdaforums.com/showpost.php?p=35275866&postcount=57
[Nexus 4 Accessories] mobilehavoc:
Why did this thread turn into a discussion about heat? If it bothers you don't use the wireless charger. I use one at home and one at work. It gets warm sometimes but it doesn't bother me. Hasn't had any impact on my phone or my hand and I love using it.

Sorry but seems this heat stuff smells a lot like FUD.
[Nexus 4 Accessories] neb001:
He's kinda bringing the "Inductive Charging Heat" thread into this thread as well. I say the heat discussion should be kept in that thread. My chargers are showing up tomorrow so it'll be interesting to see how the LG compares to the Energizer version.The Energizer charger has an annoying ticking sound that it emits even when not charging.
[Nexus 4 Accessories] Nexus-Six-:
The LG one makes the same noise (was covered earlier in this thread).
[Nexus 4 Accessories] A-Squared:
LoL... yeah dude, it's a total bunch of crap, no doubt!

LoL!! Sorry pal, but it "turned in to" a discussion about the charger, and one aspect of the charger for some people (as demonstrated by the comments and data provided), specifically the HEAT generated by the charger/phone while charging.

" If it bothers you don't use the wireless charger."

That statement is ignorant at best. Some of us are trying to figure out why some people are having "normal" experiences with Nexus 4 wireless charging, while others are having phones heat up to 42*C while charging wirelessly. Do you have a problem with that?? Or more importantly, do you have an ANSWER to that question?

Enlighten us ALL, and explain to us why "phermey" had a hot phone which is now "normal" after rooting and applying aokp??

And maybe you can explain to me why my phone gets to 40*C while a Galaxy S III remains at 30*C?? Or why (if I recall correctly) my Nexus 4 charged cool at first but appears to get hot with Android 4.2.1??

OR, maybe you'd care to explain to us why anyone is having any problems with their Nexus 4's and the WCP-700?? Are they stupid? Do they have broken phones? If it's so perfect, then why are people reporting significantly different experiences??

I'm glad your Nexus 4 charges wirelessly without issue, but I've not been as fortunate, and neither have (apparently) a host of other people.

So maybe you'd care to contribute an answer or two, or provide some more input/data instead of labeling the discussion FUD? No? Awww... :crying: that's a shame...

You start a thread and it takes it's own course, sweetheart. If you don't like the course it has taken, stop reading it. You reported your experience and we THANK you for it (in all sincerity). But to trash the information and efforts of others trying to get to the bottom of something seems a little counterproductive...
[Nexus 4 Accessories] dispatch:
I agree. Some information is great, but the beating of the dead horse might be best kept to the specific inductive charging heat thread.
[Nexus 4 Accessories] neb001:
Thanks, I don't know how I missed that whole convo. I'll try potting the pcb to try to quiet it down, hopefully it'll be enough so that I can place it in my bedroom.

A-Squared: honestly, the heating concern should be placed into the heat thread as it has it's own thread. For what it's worth, heat is a very subjective thing and I have yet to see any data plots from people claiming their phone got cooler. Where did you see that a Galaxy S3 remains at 30C? We can continue this in the other thread...
[Nexus 4 Accessories] Nexus-Six-:
Do you know the Galaxy S III stays at 30c while charging? Got any charging logs or even one off read-outs half way through? Without hard data you cannot draw any conclusions at all.

People saying things like "warm but not hot" and "normal" is entirely meaningless because we just don't know what they are judging it against.

For example, my N4 gets up to about 38-39 while charging on the pad but it doesn't feel any warmer when I pick it up than my old Nokia 6300 would get after a long phone call (and it probably isn't). But you consider these to be "insane" temperatures...

The plastic back of the Galaxy would probably also hide the real temperature along with the fact that it actually cools down a lot during the last 10% of the charge (when a lot of people will be picking up their phones).

I also agree with the others and think we should discuss temps in the heat thread and leave this one for other questions.
[Nexus 4 Accessories] dispatch:
Slightly OT

I had a dream last night that my WCP-700 started making clicking noises. Had to double check when I woke up, still silent! I post not to brag but to let you know XDA is influencing my dreams! :laugh:
[Nexus 4 Accessories] Russ.Dill:
A case with higher thermal conductivity would lead to a lower temperature, that's why they make heatsinks out of copper, and not styrofoam.
[Nexus 4 Accessories] dispatch:
Dude you should probably hire an electrical engineer at this point. Save yourself some time.
[Nexus 4 Accessories] neb001:
The fact of the matter is that there is already a thread that discusses the heat issue and is not specific to the WCP-700. Unless you have proof that it is specifically a WCP-700 only issue, why would you want to have a heat discussion in that thread AND this thread? it only makes things more frustrating for everyone involved. We've already included the link to the heat thread multiple times in here so people can find it if they want.
[Nexus 4 Accessories] eep02b:
For everyone trying to find a cheap lg qi charger, look on Craigslist in your cities. I just found one for 30 in Dallas , so you may be able to find a good deal.

-EP
[Nexus 4 Accessories] thos25:
I got my wcp700 last night. It charged around 40% in two hours. I didn't actively monitor the temperature but it didn't feel any warmer than is typical while charging.
[Nexus 4 Accessories] kpjimmy:
After using it for a week the LG charger no longer makes my phone warm. LOL Not sure why or maybe my office got colder? LOL *shrug*
[Nexus 4 Accessories] A-Squared:
LoL!!

LoL wow dude... That is an interesting observation... At least I think it is...

I'd love to know why though... Wireless charging with this phone is so freaking mysterious... I'm tempted to try charging it with the screen off and in airplane mode... My previous wireless "charges" have been with radios on...

But interesting how your phone no longer gets warm...

Does it get warm at all? How does the temperature compare to when you're USB charging?

Thanks for the input!
[Nexus 4 Accessories] TimSykes:
So I just picked one up off of amazon, as soon as I plugged it in the lights started blinking orange and red. Anyone else see this? Is it defective?
[Nexus 4 Accessories] A-Squared:
Um...

Be a little more specific. The LG WCP-700 has two lights, a "power" light and a "battery/charge" light.

On mine, with no phone, the power light is red, and the battery/charging indicator is amber/orange colored.

When I put the phone on the charger, the battery/charging indicator begins to flash green.

You might want to search previous posts also, you'll find the answer, people have already detailed how it works, the lights, etc.
[Nexus 4 Accessories] TimSykes:
When I just plug it in with no phone it blinks red on power, and orange on charge. It goes off and on about every one second. When I put the phone on it I get no change.
[Nexus 4 Accessories] dispatch:
Try different outlets and/or a different AC adapter. The manual that comes with the pad makes no mention of blinking red in their LED display matrix. If that doesn't work you may have a defective unit.
[Nexus 4 Accessories] androidfoshizzle:
So overall this charger works flawlessly?
[Nexus 4 Accessories] dispatch:
It does for me. Others may tell you differently.
[Nexus 4 Accessories] XupModz:
Works great for me! :D
[Nexus 4 Accessories] xdatastic:
Works very well for me. I have two WCP-700's and one has the loud 'BEEEEP' some complain about and the other just a short quieter 'BIP' sound. Both work fine though. I had to bend the pins on the american charger to fit into the Australian wall socket. The metal pins are easy pliable and the voltage works which is nice (but not recommended obviously)
[Nexus 4 Accessories] neb001:
It works perfectly, about the only real complaint some folks have is the loud beep that occurs when it starts charging. If it completes a charge and happens to discharge enough over time to restart charging it will beep again, which bothers some folks. There are instructions linked in this thread to remove the speaker and silence it completely.
[Nexus 4 Accessories] sitnlow4life:
Got my wcp-700 today

What's the deal with it only charging up to 95% ?
[Nexus 4 Accessories] xdatastic:
mine definitely charges to 100% but then stops charging. I'm not sure if mine then starts charging once the battery had dropped a bit as i haven't had it long enough to check.
[Nexus 4 Accessories] Solutions Etcetera:
100% here.
[Nexus 4 Accessories] androidfoshizzle:
Should I go out and get it?
[Nexus 4 Accessories] dispatch:
Trying hard to not make a snarky reply.... How could we possibly answer that?
[Nexus 4 Accessories] Antebios:
I know it's a gimmick, but I love my LG WCP-700 charger. I just put it down, hear the beep, and that's it. I'm always afraid of breaking the connector. Now, no more futz. It feels so space-agey. Now, if only a car dock with an integrated wireless charger was available for purchase for the N4.
[Nexus 4 Accessories] androidfoshizzle:
Does the phone heat up?
[Nexus 4 Accessories] Dan37tz:
I've had mine for a week now, place my phone on it every night and wake up to it every morning at 100 percent charge.

I'm curious why some aren't charging to 100..?
[Nexus 4 Accessories] A-Squared:
LoL dispatch!!! Seriously right?

I don't know about you, but my answer to foshizzlewhateveritis is something like:

READ THE POSTS, GENIUS :good::good::good::good: :).

Does the thread exist so that we can read it for you and regurgitate it? NO...

There are 124 posts now. READ them and form your own opinion. If you have specific questions that have not been answered in previous posts, then by all means ask them.

From the looks of it, the conclusion I would draw from reading the thread is:

It works for some, and not for others. Some are content with a phone that heats up close to and sometimes past 40*C. Others do not have this problem and their chargers charge at the same (or close) rate as USB and do not generate excessive heat. There appear to be many satisfied users of the WCP-700 and other Qi compatible chargers with the Nexus 4. Personally I have not had good experiences with it (as the data I have provided bears out. BUY the charger from a store if you can, then give it a try. Worst case: return it, "it doesn't work with my phone, sorry". (Obviously check return policies before doing that).
[Nexus 4 Accessories] nm3th:
After using this charger for a week, I have not seen charging temps greater than 41*C, most of the charging temps vary between 36*C and 40*C. I'm not concerned about it because with normal usage off charger, I have seen temps get up to 39*C.

As for why the phone heats up charging wireless vs usb is simple, the usb plug is rated 5V @ 1A (5W), where WCP-700 has an input of 19V @ 0.5A (9.5W) and outputs 5V @1A (5W). That means, the WCP-700 has to dissipate almost half the overall power (4.5W) in the form of heat. Since the phone is sitting directly on a heat source. it will heat up also.

If you are still concerned with the heat, just place the phone rotated 90* on the charger so that it's sitting on the lip instead. There will now be an air gap between the phone and the charger.

Lastly, yes the phone will charge slower than being plugged in. We know that the Qi standard claims 70% efficiency, so an output of 1A means the phone will "receive" 0.7A.

TL;DR

It works fine.
[Nexus 4 Accessories] androidfoshizzle:
Douchebag FTW
[Nexus 4 Accessories] nm3th:
Not sure why it sometimes stop at 95%, but I've only encountered this once. Just a simple reboot and the phone will charge to 100%. It might just be a bug in 4.2.1, as the charger still showed green, but not flashing.