Wireless charging issues? - Nexus 4 Q&A, Help & Troubleshooting

Wireless charging issues? - Nexus 4 Q&A, Help & Troubleshooting

I purchased a charger from a local company here in Australia. We really don't have much option over here as most companies won't ship to here. They tested them out and they worked (I trust the company as I know one of the owners).
Problem is that it mostly only charges to around 88% and peaked out here and stays attempting to charge, but not charging just getting hotter and hotter. So far max was 58deg I think. It has charged to 100% twice only, and I have had them for 2 weeks. These 2 times it perfectly charged to 100,stopped charging and cooled down.. Perfect.
A few others have had issues as well but the suppliers say it works fine for them.
Has anyone had any issues at all like this using wireless charging? We are really trying to get to the bottom of this and trying to figure out if it's a phone issue or a charger issue.
I have tried it with any and all stock and custom roms, both totally clean and with apps installed.
I have attached my battery graphs here in case that helps solve the problem.
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We noticed there was quite a few bad remarks about the lg one on Amazon so thought I would ask here.
So, anyone else have issues with inconsistent wireless charging of nexus 4?
Thanks.
Sent from my Nexus 4 using Tapatalk 2

I'm having the same issues as well with this Wireless Charger I purchased off eBay: http://www.ebay.co.uk/itm/221166419716
For the first 2 weeks it was charging without issue. Charged the phone up to 98/99% and then switched on and off to maintain that charge, and the phone did not get very hot.
For the past few days it has only been able to charge up to 90% and will not go any higher, but the phone gets very hot and stays like that (45C). Plugging the phone into a USB charger gets it up to 100% so it can't be that the battery maximum has been reached.
Would be interested to know what type of Qi Charger you have to see if it's a problem with a certain 'type'.

Mine isn't that one. It's no brand at all. The guys who imported them tell me they tested some, including that you bought and they say that one was intermittent.
I recently purchased http://www.fasttech.com/products/1154/10001946/1142301 and this works perfectly so far... But then it's only been a couple days...
I am putting it down to a hardware revision 10 issue where it is not perfectly qi compliant. The newer ones are supposedly rev 12 which are qi compliant.... And hopefully they work fine with it so I can sell them to my friends who all bought an n4 today (5 at work in a smallish Xray dept)...
Sent from my Nexus 7 using Tapatalk HD

Is this the hardware revision on the phone, or do you mean the rev of the charging device?
As mine evidenced, even if it works perfectly for a while, it could still not be an indication that the qi charging will keep working.
I'll probably just stick with my one until the 'official' one is released. Was a little worried that the temperature staying around 45C for extended periods of time could have a negative effect on the battery or phone components however.

Kind of a necro post but my N4 on the official charger will top out at 88% as well sometimes, then flap between charging and discharging like the phone thinks its full and is trickle charging. If I plug it in and get it to 90%, then go back to the orb, it goes to 100% just fine.
Sent from my SCH-I605 using Tapatalk 4

Double necro but I have this exact same issue and can't seem to get it to work. Anyone figured it out?

Same issue with Nokia DT-900
Nexus 4 charges to 70% and then "trickle charges", turning on and off.

jholl016 said:
Nexus 4 charges to 70% and then "trickle charges", turning on and off.
Click to expand...
Click to collapse
After a few months, mine would do the same thing. For some reason the "efficiency" of the N4 charging circuit (inside the phone) became somehow worse.
The DT-900 uses a TI bq500410A chip for control of the charging. If it detects too low of efficiency it will cut off. Luckily it's possible to modify this threshold. By removing the resistor connected to pin 43 of the TI chip it allows it to charge regardless of efficiency. It still has temperature protection so I don't think there is any danger.
http://www.ti.com/lit/ds/slusb96/slusb96.pdf

presslab said:
After a few months, mine would do the same thing. For some reason the "efficiency" of the N4 charging circuit (inside the phone) became somehow worse.
The DT-900 uses a TI bq500410A chip for control of the charging. If it detects too low of efficiency it will cut off. Luckily it's possible to modify this threshold. By removing the resistor connected to pin 43 of the TI chip it allows it to charge regardless of efficiency. It still has temperature protection so I don't think there is any danger.
Click to expand...
Click to collapse
Well, that type of mod is waaay over my head, but at least that answers the question. Thanks!

Just to add some information to this thread, I have the new Google Wireless Charger and it does the same thing. It charges to 80% and then just plateaus there, getting quite warm, but not hot, to the touch. Strange.

Related

[Q] Is my GS2 completely bricked?

Hi all, my new Samsuyng Galaxy S2 does not power on anymore.
I installed a new rom and the phone went in a kind of loop rebooting.
After 4 or 5 reboots, now it's totally bricked.
I cannot power it on (everything remains black, no screen, no lits, nothing).
I cannot debrick it using my jig cable (no life signs).
Have I to take back it to Samsung?
TIA
Luca

Have you pulled the battery before trying the jig?
Sent from my Transformer TF101 using XDA Premium App

I did.
I noticed with my digital multimeter that the 3x100K + 1K are gining 240 K... Perhaps not good quality.
May I use a 300 Kohm resistnace instead?
TIA
Luca

Sent from my PC36100 using XDA App

I would just buy a jig from ebay. Since it bootlooped there probably still is hope.
Sent from my Transformer TF101 using XDA Premium App

yes, buy a pre made jig...
and then take it back to samsung if it doesnt work

I had a problem with my phone not powering up. It was going into a boot loop, and then just not giving any life signs. However, it turned out that not powering up was due to the battery being completely drained (showing less than 2.6v). I just used a few probes and elastic bands to put 4v across its terminals at 500mA for a half hour, which gave it some charge, and then put it back in my phone. This worked. So, if you haven't got access to a spare battery, check your battery's voltage. It needs to be at or higher than about 3v to power up your phone. (4.2v is full, 3.0v seems to be the lowest that will power the phone). If you have access to a power source, just connect it up and put 4v across the terminals. Remember to connect the positive of your source to the positive of your battery and negative to negative as well.
If you have a full LiIon battery, you can ever connect them positive to positive and negative to negative, and this trick will also work.

mrnaz said:
I had a problem with my phone not powering up, but going into a boot loop a few times, and then just not giving any life signs. However, it turned out that the boot loop was due to the battery being completely drained (showing less than 2.6v). I just used a few probes and elastic bands to put 4v across its terminals at 500mA for a half hour, which gave it some charge, and then put it back in my phone. This worked. So, if you haven't got access to a spare battery, check your battery's voltage. It needs to be at or higher than about 3v to power up your phone. (4.2v is full, 3.0v seems to be the lowest that will power the phone). If you have access to a power source, just connect it up and put 4v across the terminals. Remember to connect the positive of your source to the positive of your battery and negative to negative as well.
If you have a full LiIon battery, you can ever connect them positive to positive and negative to negative, and this trick will also work.
Click to expand...
Click to collapse
This.
I dont know if its all android devices but some phones in bootloop do not recharge battery.

Ffbf said:
This.
I dont know if its all android devices but some phones in bootloop do not recharge battery.
Click to expand...
Click to collapse
Yep. It's not just that that phone in bootloop didn't seem to charge, it's also the fact that in bootloop, the phone allowed itself to power up even though the battery voltage is below cutoff level. The phone cuts off at about 3v, but my battery was well below that level when it was dead. I charged it manually with the power supply as described in my previous post, and upon the next power up it seemed to boot normally.
Thus I suspect that the bootloop was due to some error allowing the phone to power up with the battery below cutoff voltage, and as soon as the OS loaded, it realized how low the battery was and powered down. This may be a cause of bootloop in other instances as well. Investigation is in order.

mrnaz said:
(4.2v is full, 3.0v seems to be the lowest that will power the phone)
Click to expand...
Click to collapse
I have 3,27 volts...
I did not understand how you externally recharged it.

lmerega said:
I did.
I noticed with my digital multimeter that the 3x100K + 1K are gining 240 K... Perhaps not good quality.
May I use a 300 Kohm resistnace instead?
TIA
Luca
Click to expand...
Click to collapse
You should definitely try to approach 301K with the resistors.
Mine read 300K (3x100K @5%) and works just fine.

I bought 1x200 + 1x300 + 1x1... Now it is 301kOhm perfectly.
I'll try again.
Now I am charging my battery with an external charger

Nothing to do
Now I have exactly 301 KOhm resistance.
My battery is charged to 4.00 Volts.
No way.
Last chance:
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Looking to this picture I cannot understand if the PINs are looking from the front of the connector or the back.
I connected as it were seen from the front of the connector (as if I were looking inside it).
So i took the first 2 left.
Is it correct?
Thanks

lmerega said:
Nothing to do
Now I have exactly 301 KOhm resistance.
My battery is charged to 4.00 Volts.
No way.
Last chance:
Looking to this picture I cannot understand if the PINs are looking from the front of the connector or the back.
I connected as it were seen from the front of the connector (as if I were looking inside it).
So i took the first 2 left.
Is it correct?
Thanks
Click to expand...
Click to collapse
The resistors have to be between pin 4(ID) and pin 5 (GND).

Bettery Temp (Wifi Tether + Charging)

Hey All,
So this summer I'm traveling a lot and will need to work from the road (thanks for driving fiance!). To do this, I have my laptop connected to my Epic's wifi tether for hours and hours at a time. To keep my phone from draining, I'm keeping it plugged in to the car charger.
This raises a couple concerns that I hope you guys can comment on.
1. Having something like wifi tether draining my phone while at the same time charging for long periods of time seems like it's going to kick my batteries ass (regardless of temp). I'm somewhat concerned this will kill the lifespan of my Epic's battery (as it's my understanding they aren't supposed to be drained/charged in this way). My laptop battery experienced a premature death from this; leaving it plugged in overnight while downloading too many times (should have popped the battery out). Of course heat could have been the culprit in that case...
2. What's the max temp I should have my phone running over long periods of time. I know heat kills batteries faster than anything...right now after an hour or so of charging/wifi tether I'm holding at 44c.
Thanks for the info guys. I might end up using usb tether if the above are cause for concern.

Im also wondering this. My car has no a/c and when my phone is overclocked and playing music it gets pretty hot. And when I tether/charge it can get to 45c. Sometimes when I tether for long periods I put my phone on an ice pack wrapped in a cloth. It drops it to low/mid 30c.
Sent from my SPH-D700 using XDA Premium App

darksideauto said:
Im also wondering this. My car has no a/c and when my phone is overclocked and playing music it gets pretty hot. And when I tether/charge it can get to 45c. Sometimes when I tether for long periods I put my phone on an ice pack wrapped in a cloth. It drops it to low/mid 30c.
Sent from my SPH-D700 using XDA Premium App
Click to expand...
Click to collapse
lmao @ puts his phone on an ice pack lmao. i also use my phone to listen to music in the car and tether/charge.... my battery gets pretty hot as well. i just remove the battery cover.

I put this in my car.
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One of the great things about the Galaxy S phone is the interchangeable battery. You could replace your battery when it seems worn, or you could buy a cheap battery and put it in when you're going to be tethering.

Just keeping my phone open seemed to make a huge difference while doing this. (Which makes sense, since you're basically doubling the surface area exposed.)
Made it go from rebooting-hot to barely hotter than moderate usage.

vita10gy said:
Just keeping my phone open seemed to make a huge difference while doing this. (Which makes sense, since you're basically doubling the surface area exposed.)
Made it go from rebooting-hot to barely hotter than moderate usage.
Click to expand...
Click to collapse
Combine this with a removed battery cover and you should be solid.
Sent from my SPH-D700 using XDA Premium App

Have you tried PDAnet? Wired tether keeps your phone a lot cooler and it consumes less battery and actually charges your phone from your laptop

There's a USB Tether as well. I don't remember the name, but you can probably look it up. There are free versions so you wouldn't have to pay for PDAnet.
The issue with a USB tether is that you don't get the current that you normally would if you were plugged into the wall, or your car, which means you may not get enough power.
Some chargers don't work correctly, so the phone still thinks you're plugged into your computer and it doesn't draw as much current. The way you can tell is if you plug your charger in, and it asks you what you want to do, it won't draw as much current, and it will take much longer to charge.

I know what you are saying op, as for me I keep my epic on a "a/c vent mount" to keep the temp down while on the road.

Best US Note Charger, Fixed Issues, and Cheap Too!

Just wanted to tell my fellow US Note users that I found what I deem to be a great deal for a fantastic US charger.
I didn't have a converter to use the supplied European charger, so I used my old Motorola Droid X wall wart and USB cable. It worked fine, but I noticed that it made my touch screen a little less sensitive. For instance, it might make my Swypes on the keyboard break into separate lines, confusing Swype. It charged my phone, but the battery got warm; I thought all of this was normal. I tried another charger, an LG one, just to see if that changed anything, but it worked about the same.
Then from reading around, I realized that the standard charger is a 5v 1.0A charger and both chargers I was using were 5.1v 750mA/850mA chargers. I immediately started searching for a direct replacement and only after a long search I found a Palm Pre charger with the exact specs as our Note's.
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I assumed it would charge faster being a 1A charger, and it does, but what I didn't expect is what pleases me the most: the screen sensitivity when charging is immensely improved (Swype is exactly like without the charger in) and the battery stays dead cool! It is around 5c cooler according to SetCPU. Just awesome!
I'm so pleased I wanted to share. I hope this helps others who may have experienced similar issues.
The link is below (not sure if I can link directly to an Amazon item, hope this isn't against the rules.) It's super cheap and the quality is top notch! Soft touch plastic on the wall wart and also the USB cable! I just bought another as a backup. It's only 3.49 w/ free shipping!
BTW I bought it from "BobTronics" because some reviews said they got what might not be genuine Palm USB cables from other sellers. Mine is legit; it has the palm cable tie and feels high quality.
http://www.amazon.com/gp/product/B002ITKQKU/ref=oh_o00_s00_i00_details
P.S. I am in no way affiliated w/ the item or the seller. Just wanted to share a good buy that others might be interested in.

As a Palm Pilot -> Tungsten -> Palm Pre ->-->Pre 2 user I have to agree.
I have numerous chargers, some even labelled at 1.0 AMP, but none as good as the Palm charger. Just well built, FULL 1.0 Amp, and so pocket able.
Now if only I could put my Note on my Touchstone - I find the Samsung Dock and connector sooooo clumsy after the Touchstone.

aharmsworth said:
Just well built, FULL 1.0 Amp, and so pocket able.
Click to expand...
Click to collapse
I have to agree, and the picture did not do it justice, because this thing is very compact. The diameter appears just larger than a quarter. I'm pleasantly surprised-for a change.

The DELL Streak's charger works superb, I have 3 which I have tried, for super fast charging use the ipad charger its rated at 2 AMPs.

torqu3e said:
For super fast charging use the ipad charger its rated at 2 AMPs.
Click to expand...
Click to collapse
I wonder if that causes any unnecessary stress/strain on the battery or the phone itself. I was worried about the heat that came off of my phone w/ the Droid & LG chargers, probably more due to the 5.1v rather than the amperage though.

I have the same chargers that came with my HP Touchpad during the fire sale. They are excellent chargers and I also use them on my non HP mobile devices as well.
Sent from my SPH-D700 using XDA App

k1ng617 said:
I wonder if that causes any unnecessary stress/strain on the battery or the phone itself. I was worried about the heat that came off of my phone w/ the Droid & LG chargers, probably more due to the 5.1v rather than the amperage though.
Click to expand...
Click to collapse
Note's circuit limits the charge current at 1 amp.
2 amp Improvement is imaginary/placebo as charge times are exactly similar to 1 amp.
I have a Galaxy Tab charger rated at 2amps and it takes exa tly the same time to do a full charge as with the bundled charger at 1 amp.
Hence, no need to worry about temperatures.
Sent from my GT-N7000 using xda premium

jaiiscool said:
Note's circuit limits the charge current at 1 amp.
2 amp Improvement is imaginary/placebo as charge times are exactly similar to 1 amp.
I have a Galaxy Tab charger rated at 2amps and it takes exa tly the same time to do a full charge as with the bundled charger at 1 amp.
Hence, no need to worry about temperatures.
Click to expand...
Click to collapse
In that case, I am even happier w/ my 1A charger.

Energizer Wiimote Inductive Charger?

Just wondering if anybody has tried, specifically, the Energizer inductive charger for Wii Remotes? It has slots for 2 Wii remotes and uses Qi. I picked one up at Gamestop for $11.99 used ($20 new), and if it does work, this would probably be the cheapest charger out there. Just wanted some feedback to hopefully help others. I'll report back once my phone arrives.
UPDATE - got my phone today and can confirm the Wii "Qi" charger does not seem to work. I will disassemble it over the holidays and see if I can do anything with it, since it is useless now anyway! I note that someone in this thread got it to charge, so I am going to try placing both inductive parts in the centre and see if that does it!

I'm interested in this too..,
Sent from my Nexus 7 using xda app-developers app

This review says it's QI
http://pineconeattack.com/2010/02/02/wii-energizer-induction-charge-station-review/

I have the four remote version of that pad sitting next to my Wii right now. When Google finally decides to send me my N4 (Play Store status: Complete, order date changed to the 17th, and received BOE) I will test it out and let you know.

Once you get your nexus update please if it does indeed work I'll buy one
Sent from my Nexus 7 using xda app-developers app

This is interesting. Please update if it works when you receive your Nexus 4.

Any update? Thanks.

I just got my phone today, and have the wiimote charger, but I'm stuck at work for another 2 hours...
When I get home I'll try it out and see how it goes.

Julant80 said:
I just got my phone today, and have the wiimote charger, but I'm stuck at work for another 2 hours...
When I get home I'll try it out and see how it goes.
Click to expand...
Click to collapse
Thank you. Please let us know the result.
I just got my phone yesterday too. Very interested if it works.

It didn't seem to work for me. :crying:
I made sure the wiimotes still charged properly on the pad, so I know it's not the pad. The phone definitely stuck to the pad w/ magnets like it's supposed to, but then it just sat there. The pad didn't blink in recognition of a device being present, and no screen-on or charging indication on the phone at all.
So much for using this pre-existing solution for inductive charging!

I'm glad I'm not the only one who tried this. I actually bought one of these to try with my Droid DNA, I plan on getting a Nexus 4 as my second phone (currently a Galaxy Nexus) as soon as I'm able to and I thought this would be great. Good thing is now I got a nice charger for my wii remotes.
I still wonder if there is some kind of simple hack that would make it work.

I didn't think the wiimote charger was Qi. Its more like a power mat which doesn't work either with Qi wireless charging.
Sent from my Nexus 4 using xda premium

It is Qi, it sould work.

IT WORKS... sort of
So here it is, I found the sweet spot. :victory:
Line it up with the wiimote indention and leave about 1in at the top and about 1/3in at the bottom.
The catch?
It only stays charging while the phone is completely powered off. Leaving the phone on seems to cause it to charge intermittently... to the point that it only slows down the power drain and doesn't really charge it.
This is more than likely going beside my bed as I'm assuming that even with the power off it's going to charge ridiculously slowly.
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Great info. Did you have 'DayDream' mode turned off in display settings? This mode turns on display when charging, uses alot of power and can cause overheating when inductive charging. I am using the Energizer Qi charger and have "DayDream' turned off and it works well. The standard Qi spec has 19v power supply. What are the specs on the Energizer Wii power supply.

Output is 2.8v 480mA. I tried taking it apart and messing with it too - no dice on a decent charge.

Sean09 said:
Output is 2.8v 480mA. I tried taking it apart and messing with it too - no dice on a decent charge.
Click to expand...
Click to collapse
it needs 5v 1000ma to work correctly.