yashsingh1/xdaforums huggingface dataset:
[Nexus 4 Accessories] delrazor:
Reply from Moon,

He explains that they have updated the CarPad to deal with the "auto shut off" issue. but that it may actually be something built into the way the Nexus works, as he's never seen it happen with other phones aside from the LG Optimus.

I told him, as it stands, the current model I have in my hands isn't good enough for people to latch on to and want. that it'd need to be able to support more load (i.e. listen to music and keep screen on whilst GPS nav is going and at least keep the charge at the same percentage) He agrees and it seems the new unit he's sending me will have more power throughput. So here's hoping.

Here's his email.

---------------------------------------------------------

Regarding charger's trip to full charging mode while in the middle of charging, it has been fixed already I believe. What I am more concerned with is that it charges too fast, which could be causing overheating on the device itself.

Anyhow, I would like to send you again this CarPad which has been updated.

As far as Nexus 4 concerned, it might has been programmed for protecting this overheating problem because first LG Optimus built-in Qi wireless charging failed due to this overheating affects on the phone.

In case of iPhone 4S, regardless of wireless charging or not, phone itself tends to increase the temperature so high if it is GPS navigation on or flash on for video.

Owl's charging pad's capacity is 1A but it depends on how receiver built-in has a featured condition in order to absorb magnet induction field. That's why we are trying to use Owl's own module for phone. Simply coiled receiver module build-in like a Qi is not enough to get more power for Galaxy Note 2 or Tablet.

One of featured Owl's is plating gold on the PCB pattern on receiver and charging pad's module.
[Nexus 4 Accessories] indo_matic:
sorry if i've missed this earlier in the thread (tried to read as much of it as possible) but can somone just quickly clarify the difference between the carpad and autopad?
[Nexus 4 Accessories] delrazor:
From what I can gather, the AutoPad is a larger holder for devices like the Note2. It has adjustable sides and apparently a larger/more powerful coil to charge larger batteries.

The adjustable part would still fit our N4's but can go much wider. The CarPad has fixed prongs on both sides that you can bend out just a bit to fit your phone in. With no case or bumper on, the N4 can slide in almost effortlessly from the top. With a bumper on, I need to push a little harder from the top for the sides to spread out a bit, or I pull back on of the sides just a little and place the N4 in the fixed side and let go of the other side.
[Nexus 4 Accessories] the co0kie:
Was bored and thought this would be a good way to have people sign up...

Sign up here:

https://docs.google.com/spreadsheet/viewform?formkey=dGdHM0o1eTlkVUNqTmpzVC0yN0tQNUE6MQ

View list here:

https://docs.google.com/spreadsheet/ccc?key=0AmBBI7mV20OldGdHM0o1eTlkVUNqTmpzVC0yN0tQNUE
[Nexus 4 Accessories] idigg:
I signed up but that is unofficial. I bet Google will release a car charger (albeit probably not Qi) before this is released. Hopefully not.
[Nexus 4 Accessories] mrbkkt1:
I don't think it's going to be possible to wireless charge positive, run navigation and stream music. Last night, before I sent to sleep I kept my phone on the wcp 700 which has been one of the most efficient chargers for the n4 so far.

I watched 2 episodes of west wing on Netflix through WiFi on auto brightness in pitch black, and got a steady decline.

It's the steady red line going to almost zero.

Here is the same time period showing usage for reference.

I too am interested in a small charging pad for my car, so you could tentatively put me on the list. For now, I use a Samsung infuse car dock hacked to provide access charge instead of USB.
[Nexus 4 Accessories] delrazor:
Could you run a simple test with the Battery Monitor Widget app, just stagnantly placing the N4 on the charging pad for 20 minutes or so, to see what it's mA input value is across a period of time? I'm guessing it'll be somewhere between 400-600mA?
[Nexus 4 Accessories] mrbkkt1:
Same time period, I went to sleep after watching Netflix. And left phone on charger.

Obviously the time after the screen goes off lol.
[Nexus 4 Accessories] ijohnboy:
Nokia Qi charger

Mine works perfectly with my Rearth slim installed!
[Nexus 4 Accessories] mrbkkt1:
Numerical values, I went to sleep around 4:00 am
[Nexus 4 Accessories] delrazor:
Wow.. that fluctuates a lot (peak at 725mA and bounces all around during the charge cycle as low as 425mA) I wonder why it's so inconsistant?

I'm going to run these same tests with the charger tonight some time and will post my screenshots of these graphs and charts as well.

Thanks for the quick turn-around!
[Nexus 4 Accessories] narcopolypse:
Sorry I haven't been on here lately. I'm in the military and when we go out in the field for training we can't online.

Thanks for the signup suggestion. I didn't know I could do that with google docs. I'll get one set up so people can use that instead.

As far as the charging rate is concerned, on my test unit I can easily get good positive charging while running GPS navigation, streaming music off the interwebs and set my display to full brightness. The output of the Owl CarPad is very impressive. The only problem is we are still waiting for Moon to resolve the issue of the charger shutting off randomly. Once that is fixed and I get a new test unit that I can verify as working I will start the first shipment. I know the wait is killing you guys but I feel your pain. I have a test unit in my truck and it makes me die a little inside every time I see that little lightning bolt disappear. :crying:

But on the bright side, this is one of the highest quality phone mounts I have ever used. Extremely sturdy and the N4 fits perfect.
[Nexus 4 Accessories] mrbkkt1:
Numerical values, I went to sleep around 4:00 am

View attachment 1634128
[Nexus 4 Accessories] delrazor:
Hmm..

I'm wondering why I jabent gotten results as great as yours. Nav plus full brightness alone for me = no sognificant charge at all (maybe 1% over a half hour)

Maybe my socket is lower amperage?
[Nexus 4 Accessories] narcopolypse:
I've disassembled the adapter to see if there was any limiting hardware inside and it's nothing but two wires. I suppose it is possible that your cigarette lighter port may be causing problems but I think it has more to do with hardware revision. My test unit randomly stops charging like yours but the light always stays red. This makes me think we may have different hardware.
[Nexus 4 Accessories] the co0kie:
IDK if you saw this but alot of people have already been signing it so if you want to just use this I can just add you to the owners of it.

Sign up here:

https://docs.google.com/spreadsheet/viewform?formkey=dGdHM0o1eTlkVUNqTmpzVC0yN0tQNUE6MQ

View list here:

https://docs.google.com/spreadsheet/ccc?key=0AmBBI7mV20OldGdHM0o1eTlkVUNqTmpzVC0yN0tQNUE
[Nexus 4 Accessories] neotekz:
do you have current widget or battery monitor to see how much current yours is pushing? that way at least we can compare yours with delrazor to see if it's the charger or something else. Ill be happy if this charger can consistently push 700mah to the phone.
[Nexus 4 Accessories] M3Rocket:
Thanx for doing this. I signed up hoping all the issues will get resolved!
[Nexus 4 Accessories] mrbkkt1:
Same time period, I went to sleep after watching Netflix. And left phone on charger.
[Nexus 4 Accessories] delrazor:
Another reply from Moon. New test units on the way.

He's sending 2 out this time, should have some fun tests with these.

Here's his email. He's suggesting it's possible that LG governs the wireless charging to stop when the battery reaches 95%, and has one unit which may bypass this and continue pushing a charge to the phone (which may alleviate the charge stopping mid-way through charging at lower percentages as well)

-----------------------------------------------

I sent 2 sets of sample for a test. One is new module which is faster charging than the other one.

I would like to know which one is more stable and faster charging and keep low temperature while GPS navigation and Bluetooth On.

On charging from 95% with screen off, we found that CarPad changes to Green which means it could not detect very less power flow. I think LG has programmed the last minute charging cycle.

But one of CarPad which has adjusted might be functioned . Please compare two samples carefully.

I would like to have your feed back.

Best regards,

Moon
[Nexus 4 Accessories] wera750:
So has the original list been thrown away? Do we need to sign the Google doc?
[Nexus 4 Accessories] DutchDogg54:
It better not be ;)
[Nexus 4 Accessories] narcopolypse:
No. I am still maintaining the original(and official) list. I may transfer it to Google docs as suggested but I've been very busy lately so I haven't done it yet. And until I do the only way to get your name on said list is to ask me either in this thread or via PM.
[Nexus 4 Accessories] DJGibbon:
Just another request to be on the list from a UK user
[Nexus 4 Accessories] gear.h34d.2012:
Bam. Signed up.
[Nexus 4 Accessories] dangerman14:
Not sure if anyone knows.. but you can order directly from him..

owlpad.net/carpad-for-nexus-4/

$60 inc. shipping to anywhere.
[Nexus 4 Accessories] the orange bandit:
Didn't we establish that the autopad is what we need?
[Nexus 4 Accessories] delrazor:
No, they seem to be pushing forward with the CarPad to adjust the charge to be stronger without overheating the phone or the module.

Ideally, I think the only difference between the CarPad and the AutoPad will be the size and function of how the mount works, and possibly a larger surface area for the charger coils to be able to place your larger device onto them (Note2, Nexus7 maybe? not sure)

This charger is a great product, and the mount is one of the best I've ever seen, they are just taking the time and effort to make sure we get the best possible mix of charge speed / mA push, as well as temperature regulation.

On a testing note,

Does anyone else here have a desktop style Qi Charger Pad? I need to compare something I've found in testing with you, if so.

PM / email me please if you have a normal Qi Charger of some sort, and a Nexus 4.

Thanks,
[Nexus 4 Accessories] YasooKhuul:
Small question : is there a Photo from the back of the carpad? Cause i want to use My brodit proclip instead of putting it to the window.
[Nexus 4 Accessories] delrazor:
Here's a quick gallery I put together of shots of JUST the charger pad and holder.. the back is a socket joint that goes on a little ball at the end of the mounting arm, screwed on with a screw ring to keep it in place.

http://imgur.com/a/PbEtx

Hope that helps.

EDIT: I haven't disassembled the charger pad or holder, but i would assume there's probably a way to remove it completely from the portion that has the prongs on it, so it's just a little rectangle piece, and then somehow mount that onto whatever other mount you want to use?
[Nexus 4 Accessories] ziggy34:
Delrazor,

Here is a screenshot using the LG charger.
[Nexus 4 Accessories] ziggy34:
Delrazor,

Here is a screenshot of normal charging with the LG.
[Nexus 4 Accessories] delrazor:
Thanks a ton! That is starting to show me what I was kind of thinking. It looks like the Nexus 4 limits the Qi charging after a certain temperature threshold. It may just be that Qi itself is not able to charge as well once the temp gets hotter, or it could be a limiter set on the battery to not accept charge when it gets hotter.

Either way, this will be the determining factor on how well the OWL charger works, and unfortunately it depends on your climate. If in the summer time, the heat of the car gets hotter, we may not see charging from Qi work as well.

I'm going to get one more test from another member and report my findings to Moon. There may be some other methods they have up their sleeves to keep temperature down.

Thanks again!
[Nexus 4 Accessories] sailerboy:
I signed up on the Docs list, but wasn't sure if you were maintaining it. Please put me on the list here.
[Nexus 4 Accessories] neotekz:
i just got an update from moon about the carpad, here's the email

does this mean that he doesnt plan on fixing the overheating problem and just telling people to use a case or 7 business cards to create space to lower the charge rate?

i've never use a Qi charger before but is this how it works, you can lower charge rate by increasing distance from the pad?

delrazor-from your testing is the overheating problem caused by the carpad giving too much current?
[Nexus 4 Accessories] sirbagin:
Re: Qi Wireless Charging Car Mount

I think this issue can not be solved. If you charge with higher current it gets warm quicker but you have positive charge in nav conditions :(
[Nexus 4 Accessories] quentin0:
I don't think we need it to *charge* our phone. We just need it to maintain a steady charge to keep the battery from dying on us...there's no possible way to control the temperature of our phones that may be already OC'd, has bluetooth and gps turned on, and maximum brightness.
[Nexus 4 Accessories] youareme7:
So I think the state we're at now is that the carpad is as good as it's going to get and might as well put down the cash if you want one? I have been waiting for a qi car charger for a while and I am sick of the crappy mount I have now where I have to manually plug it in all the time. I'd consider the proclip one but I like using a case to the one that has the charging built in is no-go.
[Nexus 4 Accessories] war1000:
Re: Qi Wireless Charging Car Mount

Signed up... I'm in Canada
[Nexus 4 Accessories] neotekz:
For those that have the unit to test, does the nexus 4 still overheat with the charger with the screen off and nothing running?
[Nexus 4 Accessories] arnie580:
Power

Also could someone please confirm what type of connection the power cable has please, is it a standard cigarette lighter plug or USB?

Thanks.
[Nexus 4 Accessories] delrazor:
OK. So first off, sorry for being quiet lately, I've had a ton of work and pulling all-nighters and sometimes double-all-nighters. :(

Suffice it to say, I haven't had a lot of time to run tests other than 10 minutes to drop my son off at school.

I did receive the new charger and power adapter from Moon last week and with my initial tests its going a lot better. However I was noticing that my results would vary. Sometimes I could stream music and use GPS with the screen on and I would maintain a positive mA charge throughout. The phone would go up 1-2% and everything was smooth. Other times the charge would almost seem non-existent, and my phone would get hotter than normal while losing percentage.

I've attributed this to one factor. Mobile signal. I noticed when I took one route to his school it would be fine and another it would be horrible and get hot. Because one route goes over a large hilly area, my signal would degrade for a little while and my phone would be searching for signal, causing more drain on the battery than normal. Thus, overheating, using more battery, and not receiving charge.

When getting good results, the phone would start out at about 29°C and move up to about 39°C. But it wouldn't get overly hot, and the charge went fine. When I couldn't get good signal, the phone would easily go over 40°C sometimes 44°C and the charge was never enough to keep it level.

The heat does play a role in how fast it charges, but the main factor was the searching for mobile network that was killing the charge effect.

Otherwise, this new version does not switch off, or turn the light green, during any situation, and I believe they've worked out all the kinks.

The amount of charge with no processes running can vary from 400-600mA /minute, but it never gets very warm on the charger if nothing is running and the screen is off.

The cigarette port adapter is a hard wired plug with just a coaxial power plug on the end of it. I'm not sure if you could get a USB to power plug for this, or if it would work properly. They've been tweaking the power adapter as well as the carpad to make sure it gets the power it needs.

I'll post some screenshots of tests later today and compare them to mobile signal read outs to show when the signal drops and the charge can't keep up. Otherwise I believe we have an awesome product on our hands here.

I'm going to see if Moon has any other tests needed or another unit to test, but I think we're in the green zone as far as how this unit will perform.

Moon's mention of stacking cards up is only as a test for different power levels, and the fact that the naked phone has a glass back, means that any heat the carpad produces itself does get transfered to the phone easier. I use a TPU case and the back does get warm, but not too significantly.

Anyway, back to work. I'll have screenshots soon.
[Nexus 4 Accessories] greatwithtoast:
If heat is a factor, I think it would probably be a good idea to suggest having this made in white plastic instead of black. Just a suggestion.

Narcopolypse, add me to your list!
[Nexus 4 Accessories] dangerman14:
Hey everyone,

Thought I might share my experiences with the Carpad

I got mine shipped last week, so I assume it’s part of the latest batch.

I live in Sydney, Australia and went on a bit of a road trip on the weekend. It’s summer so it’s quite hot weather etc.. good environment to test it I suppose.

I was running mine naked (no case/bumper), and the first time (driving in city-good signal) I placed it in the carpad, it only lasted a few minutes before it stopped, due to heat (i assume). I was playing with the phone for 30 minutes or so beforehand, so it was quite hot already.

The next session I drove around for 2 hours, I tried using GPS with ⅓ brightness.. lasted for about 15 minutes until it stopped charging.

From there I attached it to my side window so I could put it directly in front of the vent of the air-con. Seemed to do the trick. I drove about an hour from that moment, and got from 46% battery to about 58%. so around 10-12% battery.

The next day I did a screen off test, and got pretty good results. think it was better than 10% per hour.

I will hopefully be getting a replica bumper sometime this week, possibly next week. I think that would help the heat issue as I think it would create a gap between the back of the phone and the carpad.

Otherwise I will be looking into creating some sort of pad to make a gap between the phone and charger.
[Nexus 4 Accessories] benjatt:
Hi, could you put me down for one please. I'm in the UK
[Nexus 4 Accessories] war1000:
Is it possible to put up some more pictures? wanted to see if the car pad can also be just used as a flat pad on a flat surface...that way for that setup we won't need to buy a different charge pad + a car adapter.

Thanks a lot!
[Nexus 4 Accessories] neotekz:
any one of you guys that have the carpad have a home qi charger too? i dont mind the carpad turning off if the phone get too hot, usb car chargers cant charge the phone very well either if it gets too hot. Im just wondering if the carpad overheats because it's not an efficient charger or if this is just normal for all qi chargers? i've had a few cheap chargers that would get a lot hotter than oem chargers.
[Nexus 4 Accessories] delrazor:
These are pics I posted last week.

Http://imgur.com/a/PbEtx

As you can see on the 4th pic down, the pad is attached to the holder with a nut and bolt. You'd probably have to disassemble the pad's front face to get to the head of the bolt and unscrew it to take it out.

Nothing stopping you from buying a second mounting piece though, and using the ball joint with the screw ring to take it off and bring it inside and mount it on your desk or night stand. I'm thinking of doing this myself.
[Nexus 4 Accessories] delrazor:
Here's a screenshot from a drive tonight.

http://i.imgur.com/gKQrGwJ.png

Its chronological from the bottom upward.

At 8:58, my phone lost signal for a good patch of the drive and you can see the results of it working harder. The mA column goes negative, the charge % column drops faster, and the temp continues to rise. It was charging just fine up until that moment.

I was using GPS with the screen on at lowest brightness and streaming Spotify. I think it was working harder because Spotify was constantly searching for data as well as my phone searching for signal.
[Nexus 4 Accessories] war1000:
Thanks....yeah that is what I am thinking.

Alternative is to get their charge pad (the one for desktop) and try using the car lighter input and see if that works. I emailed moon, but didn't respond to that question.
[Nexus 4 Accessories] dangerman14:
I don't have a home qi charger,.

I won't be driving tonight as I have other things on,,.. so i cant test it properly but, once the charger stops charging, I don't think it resumes charging once it's below the temp threshold... i.e if you have GPS on + screen and it stops charging, the battery can drain pretty quickly!
[Nexus 4 Accessories] delrazor:
Tip: the little light is actually a button. If it goes green for some reason, just click it off and wait and click it back on.

I haven't seen mine greenlight unless it's near or above 90%, its also winter here, so it could be that I'm not seeing temps high enough to cause that issue.
[Nexus 4 Accessories] dangerman14:
Ahh, would have never known!

cool thanks!
[Nexus 4 Accessories] neotekz:
Even if your phone is indicating that it's charging It looks like the charger stopped sending any current at 8:58. It went from charging your phone at 237mA to using 465 and you said that the charger outputs around 600mA so it looks like charging stopped at 8:58 then started slowly again at 9:03. From the temp it looks like the magic number to effectively stop charging is 41 degrees Celsius.

On a side note check out an app call Adaway it will get rid of that ad at the bottom, it works with browser ads too.

dangerman14-can you get some temp readings to see where yours stopped charging?
[Nexus 4 Accessories] dangerman14:
I didn't actually have the batter monitor installed on my phone as it was more or less fresh out of the box.

I will definitely do some more test with monitoring soon
[Nexus 4 Accessories] delrazor:
For standards sake, please use this app https://play.google.com/store/apps/details?id=ccc71.bmw

Under Monitoring in settings, choose "Monitoring without widget"

and under History / History update rate, choose 60 seconds

Then, when showing any results for a screenshot, click on History on the main screen.

Thanks, let's hope 41C isn't some all-feared number. I'll give it a good test today as well and try putting heat directly on the charger from my AC Vent, to simulate a hotter day. maybe the business card thing Moon mentioned is to keep this heat from happening whilst lowering the charge rate just a little (something they probably need to tweak internally on this current build)
[Nexus 4 Accessories] ziggy34:
Re: Qi Wireless Charging Car Mount

Delrazor,

Have not done the test yet, but here is a screenshot from overnight charging. My battery got to almost 43 degrees and was still charging.

Will do the test later today after the battery drains some.
[Nexus 4 Accessories] themadeira:
ziggy34,

Which charger did you use in this test? The stock charger?
[Nexus 4 Accessories] ziggy34:
Re: Qi Wireless Charging Car Mount

No, been using the LG qi charger
[Nexus 4 Accessories] neotekz:
so 41 degrees didnt slow down charging for you like it did for delrazor...looks like it might not be the phone but the carpad cutting power when the charger gets too hot then.
[Nexus 4 Accessories] Ibsonic:
Re: Qi Wireless Charging Car Mount

Wooopp wooopp count me in ! I want one too..

Verstuurd van mijn Nexus 4 met Tapatalk
[Nexus 4 Accessories] jutezak:
I wonder: the service manual shows that the Qi charge circuit connects directly to the battery. And also that the circuit limits current to 789 mA or 3 watts.

So it seems the power of the charger is not so important, and that the battery may discharge when navigating.

Any experience with that?