Develop Bugs

Car Charger

Anyone find one that works well? I got a Cellet retractable micro use charger last week, and it charges my Motorola Electrify M just fine as well as my Gen 1 N7. No dice on the N7 FHD.
Ideas?
Sent from my Nexus 7 (2013)

dbeth said:
Anyone find one that works well? I got a Cellet retractable micro use charger last week, and it charges my Motorola Electrify M just fine as well as my Gen 1 N7. No dice on the N7 FHD.
Ideas?
Sent from my Nexus 7 (2013)
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Click to collapse
Sorry no answer, looking for one as well, I am looking for a car charger that will have a dual port to charge, one for the Nexus 4 and one for the Nexus 7 FHD, and recommendations would be great
thanks

car charger
arimus said:
Sorry no answer, looking for one as well, I am looking for a car charger that will have a dual port to charge, one for the Nexus 4 and one for the Nexus 7 FHD, and recommendations would be great
thanks
Click to expand...
Click to collapse
hii well as if you are looking for a car charger you can check out the huge collection of car charger for N7 at Fommy
they have multiple of variety
So just check out once may be you guys get something you have been looking for
Thanks..!!

I just got one of the sea few day ago:
http://www.amazon.com/gp/product/B00B8M4IMK/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1
It has dual USB ports. One is marked Android the other Apple. The apple port if specifically designed for apple devices (iPhone 5, iPad).
Individually each port can do about 2 amps, or 3.6 amps total if both are being used. The Apple port will charger other devices slowly with standard Data sync cables or full speed with a charging only cable (no data).
Basically with a Charging only cable you could charge two device, one at about 2.1 amps max and the other at about 1.5 amps max (3.6 total amps).
I have two dedicated charging only cables coming that I plan to keep with this car charger so I can charge my phone and tablets on to go.

I tried my Nexus 2013 in my dual Sprint car charger that I got from amazon (Technocel MV9MCDUO-SP OEM Sprint Car Charger - Black with USB Port) and I'm getting a really good charge for my Nexus.
I even tested my phone charging in it's USB port while the Nexus was charging on the main cord and both seemed to cahrge jsut fine.
If I just charge my Motorola Photon on the main cord it charges faster than any AC adapter or car charger I've ever used.
I highly recommend it.
I can't post links yet but its $6 on Amazon.. search for... Technocel MV9MCDUO-SP OEM Sprint Car Charger - Black with USB Port
Fommy says its compatibale for the Nexus 7 2013 too but it's $19.95 there.
(Sprint® (OEM) Micro USB Vehicle Power Charger PLUS for Google New Nexus 7
SKU: 89356
Price: $ 19.95)
HTH.

Anyone had any success using a wireless charger in the car?

dannyboy22 said:
Anyone had any success using a wireless charger in the car?
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Click to collapse
I suppose that would work, a 2 amp or 1 amp car charger should power most QI chargers.
Not sure I see the point though, I see two issues:
1. Wireless charging is less efficient and slower (better suited for the desk or night stand).
2. There's a good change the device will move around while driving and not charge if the coils are not aligned properly.
You could try a modify a car mount to hold a wireless charger, but you still would have the slower charging issue, withc may not really be an issue for some.
I have however seen a car mount that holds the phone and has a opening to hold a round QI charger, but wouldn't work for the N7. See here:
http://www.ebay.com/sch/i.html?_odk....XQI+car+charger&_nkw=QI+car+charger&_sacat=0

RojasTKD said:
I suppose that would work, a 2 amp or 1 amp car charger should power most QI chargers.
Not sure I see the point though, I see two issues:
1. Wireless charging is less efficient and slower (better suited for the desk or night stand).
2. There's a good change the device will move around while driving and not charge if the coils are not aligned properly.
You could try a modify a car mount to hold a wireless charger, but you still would have the slower charging issue, withc may not really be an issue for some.
I have however seen a car mount that holds the phone and has a opening to hold a round QI charger, but wouldn't work for the N7. See here:
http://www.ebay.com/sch/i.html?_odk....XQI+car+charger&_nkw=QI+car+charger&_sacat=0
Click to expand...
Click to collapse
What I'm thinking is, taking the back of a slide-in type cover and hardwiring the wireless charger behind it. A slide in type cover should minimize any movement/alignment issues.
Then affixing the entire assembly over my existing NAV screen in the dash with the wireless charger hardwired to the car.
Then, I can slide in/slide out the Nexus as desired, and not have to worry about fiddling around with the Micro USB connector.
I'm not concerned about charging efficiency, more about maintaining power. A 2A charger at 60% efficiency should provide me the 1.35A that the Nexus 7 needs. When needed I can remove it and fully charge it.

Will a Nexus 7 (2012) charger work with the Kindle Fire?

Hey, I have a kindle fire (1st gen) and would like to know if the Nexus 7(2012) charger would work. Thanks

Yeah, that will work fine.

Daniel120201 said:
Hey, I have a kindle fire (1st gen) and would like to know if the Nexus 7(2012) charger would work. Thanks
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Click to collapse
Sure. I use a blackberry USB connected to an apple iphone power brick when my kindle charger is not available.
You just need to check whether the output is 5 volts.
Good Luck

Yeah it would, why would not?
Daniel120201 said:
Hey, I have a kindle fire (1st gen) and would like to know if the Nexus 7(2012) charger would work. Thanks
Click to expand...
Click to collapse

Oh, I just thought that it would blow up the device or something, this is the first time I had usb chargers

What about just the kindle? would it work for it too ?

Sadvance said:
What about just the kindle? would it work for it too ?
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Click to collapse
If it has the standard micro-usb then yes. It'll work for anything with the standard micro-usb port.

As said above, it should work fine. I use an HTC cable and charger and they work fine.

Easy, yes it will work.
If the Kindle Fire has a MicroUSB-charging-input, then yes, it will work with all newer than 2009~2010 Samsung Omnia, Galaxy, Wave and Star* chargers and Sony and the last newest Sony Ericssons and HTC etc. ALL HAVE MicroUsb! [The Nokia E71 (2008) has got MicroUSB but not for charging but for Data Transfer, for full file system access and many other advantages choose Mass Storage if available, not MTP!].
ALL Nexus devices even have a MicroUSB!
*Samsung Star is for Loosers, Sttar 2 > Star 3 becausee of CamFlash, CamBTN, ScrRes, WideScr, and 27 other reasons.
Click to expand...
Click to collapse
MicroUSB is universal now, MiniUSB and the Circle Nokia and the old Sony Ericsson Inputs are too old now, to charge an old Nokia in order you need an adapter, that goes from the MicroUSB to the Nokia. But all new Android and Windows Phone Phones+Tablets use MicroUSB.
But i recommend a real charger for using to charge a MicroUSB-device.
A Real charger is one, that directly goes from the socket to the Device(ending=MicroUSB).
The Nexus charger is a USB-Charger (there is the lettering „ASUS" engraved into it.
You Connect a Cable (USB to MicroUSB) to the USB-Charger and
And such a charger is much weaker than the direct charger.
Best Charger: Hama MO·38E with Trickle Charging

Hannah Stern said:
But i recommend a real charger for using to charge a MicroUSB-device.
A Real charger is one, that directly goes from the socket to the Device(ending=MicroUSB).
The Nexus charger is a USB-Charger (there is the lettering „ASUS" engraved into it.
You Connect a Cable (USB to MicroUSB) to the USB-Charger and
And such a charger is much weaker than the direct charger.
Best Charger: Hama MO·38E with Trickle Charging
Click to expand...
Click to collapse
That's not correct. I actually recommend the chargers with a detachable USB cable so you can replace the cable by itself if needed. What is correct, however, is that many USB chargers are designed around the Apple standard and may not work properly with devices that expect the DCP standard.

Advantages of both týpes of chargers:
NiHaoMike said:
That's not correct. I actually recommend the chargers with a detachable USB cable so you can replace the cable by itself if needed. What is correct, however, is that many USB chargers are designed around the Apple standard and may not work properly with devices that expect the DCP standard.
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Click to collapse
Well... yes, that could be. This is the big advantage of such a charger. It's good to have both týpes at home but the direct charger is much stronger (faster charge, more power) and this „Hama MO·38E" has even an Optimized Trickle Charging but however...
Both types have theyr adv/disadvantages. For example: such a USB-detachable charger is more practic and flexible but it's much weaker and it's lifetime is lower, if you misuse it. (Bad usage that can cause physical damage to it)
If you use it responsibly, then there will not be any lifetime problems!
That what you say is about flexibility. I wish that there would be one charger with all advantages: Power and Trickle charging of the Mo-38e and detachable cable.
The detachable feature is a big advantages but such a charger is weaker.
Even charging on the PC/Smart-TV is not as fast as the real charger. But somewhere in XDA (adding link later, if/whenever i'm able to find it) i saw something that could measure the charging power and there was an adapter that could bring full charger power from the PC (prooven with this PowerMeasure-Device.) which means that you can almost get the charging power of the Mo-38e off the PC to a device!
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Hi, mine says that the charger is too weak, and it can charge slowly

Dual Android Car Charger?

Yes, a double Android car charger, meaning that it has two usb ports designated for charging Android phones - on each port, the D-/+ data pins are shorted. On every one I've seen it's either 1x Android+1x Apple or 2x Apple. I would really love to charge a Nexus 4 and Nexus 5 at the same time at full speed... anyone know how to solve my dilemma?

I have found on Amazon dual charge but does will charger both ?

i guess it can
you should take care that the alimentator can output at least 2Amps.

Smiert said:
Yes, a double Android car charger, meaning that it has two usb ports designated for charging Android phones - on each port, the D-/+ data pins are shorted. On every one I've seen it's either 1x Android+1x Apple or 2x Apple. I would really love to charge a Nexus 4 and Nexus 5 at the same time at full speed... anyone know how to solve my dilemma?
Click to expand...
Click to collapse
Have you seen these ones. Says they're Dual http://www.poeticcases.com/chargers

You should buy an original one if you don't want your phone's battery ruined fast.
I used to charge my phone in my car alot (Samsung Note 2) and the battery needs to be replaced now.

I'll recommend you to use Avantek. It has good reputation on Amazon and I'm also using this for my two Note 2. It has dual USB port Charger to Five USB port Car charger. You can choose any of them as per your need. Lets Rock!! :good:

I'm sure you'll find something on eBay. You'll be surprised what specific items they have.

Got one on Amazon, no charge on both...

I use Avantek for my HTC One and my wife’s Nexus 5. It has 5 USB ports and, if the specs are right, there should be 2 voltage inverters in the charger so that two Android phones can be charged simultaneously at full speed. FYI most chargers have 1 voltage inverter.

[Q] Need Opinion/info on Qmadix 4.4A USB Triple Travel Charging Hub...

So Im in desperate need of at least one more Wall charge for my galaxy note 8.0 and Galaxy S4. The only problem is they're either pretty expensive for the more legit products, or sketchy. I just need the white box part that goes into the wall outlet. SO incredibly embarrassing and frustrating that I can't seem to figure out what it's actually called. In any case, through my searches I found this:
Qmadix 4.4A USB Triple Travel Charging Hub
It allows for three ports, but each port is designated differently. well, okay... two are the same (1A), but ones different (2.4A). I have no clue about electricity, except to know if you don't use the samsung recommended converters it could damage the battery in the long run. Im under the impression that both of my devices require 2.0A. Does this mean only the 2.4A port would work?
Is anyone familiar with this Item Ive listed? Could I use this device to power bot my Galaxy Note 8.0 AND Galaxy S4 at the same time?
It seems like such a great deal and very compact. Can't pass up without at least asking about it.
again, Im asking about the:
Qmadix 4.4A USB Triple Travel Charging Hub

This is what you NEED to get: http://forum.xda-developers.com/showthread.php?t=2608578

vectron said:
This is what you NEED to get: http://forum.xda-developers.com/showthread.php?t=2608578
Click to expand...
Click to collapse
I appreciate the reply. I had actually seen that and immediately fell in love... but I just as quickly wrote it off because of the additional cable thats required to plug it into an outlet. I need something more compact... something with collapsible prongs.
Another one I was looking at is this one iXCC Dual USB 4.2 Amp (20 Watt) SMART High Capacity AC Travel Wall Charger...
Any thought?

Ports listed as 1A might still be able to supply 2A for your phone, but they might be right at the top of their current limiting (thus running warmer). The whole thing about using only Samsung provided charger is just to scare you off so you buy their original overpriced accessories But there is a truth to it as well, when you buy cheap stuff from ebay where they sell 1A rated outputs labeled with 2A and can run into a problem above (overheating, which causes short, which can cause a damage to your phone). Anker is a trusted brand with a decent quality control, RAVPower is good, and I heard of QMadix before as well.
Here is a problem. When you are dealing with wall outlet converters with multiple outputs that carry a lot of heat/power, you are too close to the main electrical outlet. So, I would be careful not too overload these. Maybe using 2 devices plugged in at a time is ok, but NEVER 3 at a time. When you have something like that 40W Anker converter, you are placing it away from the outlet, it exposed to air circulation from every side (cooling it better), and it should have some fuse or internal protection in case of a short. I understand, for convenience you need wall converter that plugs in, but make sure you get a double one, not the triple output one because i would consider those to be not as reliable when you are charging 3 devices at the same time while plugged into a single wall outlet directly.

Anker also make this one: www.amazon.com/Anker®-4-Port-Charger-Travel-Adapter/dp/B00EI8SS4U/ - but I would not load more than 2 ports at a time. Or if you load 3 or 4 ports, make sure it's not overnight when you are sleeping and that all 4 charging devices are not drawing max current

Btw, one quick question... The Anker 40W 5-port USB wall charger... Should I only charge 2 devices at a time with it aswell? or was that referring only to chargers that plug directly into the wall because of the heat issue?

varxtis said:
Btw, one quick question... The Anker 40W 5-port USB wall charger... Should I only charge 2 devices at a time with it aswell? or was that referring only to chargers that plug directly into the wall because of the heat issue?
Click to expand...
Click to collapse
You can use all 5 ports on that one (40W version that doesn't plug into wall outlet directly). That how I do it all the way, mostly using 4 ports at once to charge my Note 2, my Metawatch smartwatch, my mp3/DAP player, and external battery. Sometime also add my wireless headset too

Charger observations: Nexus 5 vs. Galaxy S4

I have been on the hunt for good charging solutions for my Nexus 5 (and other devices). During this process I have made some observations that many of you probably already know but I wanted to post them here for others and hopefully gather more information as well.
It started off with me looking for dual port chargers that could fast charge my devices. Much to my dismay, I found that all the dual chargers I found had one Apple port and one non-Apple port which meant decreased charging rates for devices that weren't meant for its port. With that I decided to do a little non-scientific study. This was not meant for getting exact performance numbers, just to get an idea of what kind of performance I could get with different phone/cable/charger combinations.
Phones used:
Nexus 5 running 4.4.4
Samsung Galaxy S4 (SGH-I337) running 4.4.2
Method of measuring charge amperage:
Current Widget. Set to update every (1) second and I put 2 instances of each type of widget on the screen (total of 4 widgets): https://play.google.com/store/apps/details?id=com.manor.currentwidget
Although I did the measurements with the phones connected to WiFi and not in airplane mode, the differences with the phones in airplane mode were insignificant for the purposes of this observation. The bigger factor was the difference between screen on and screen off (the rates you see immediately after turning the screen back on). I only used screen on rates. The readings I used below were when the phones batteries were below 90%.
Chargers that I have tried so far:
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From left to right, starting at the top left: Nexus 7 (2012) stock charger, Galaxy S4 stock charger, Nexus 5 stock charger, PowerGen dual port charger, GT Max 2 port car charger, LectronicSmart by Conair 2 port car charger.
Charger ratings:
Nexus 7: 2A
Galaxy S4: 2A
Nexus 5: 1.2A
PowerGen: 2.4 total divided between an Apple port and a Non-Apple port (NA)
GTMax: 2.1A and 1A
LectronicSmart: 2.1A each
Cords I used: Motorola SKN6378A, stock Nexus 5 cable, stock Galaxy S4 cable. All these cables had the same performance.
Nexus 5 results:
N5, N7 and PowerGen (NA port) all peaked in the 900mA range but the readings were constantly fluctuating between the peak and the 600mA range except for the PowerGen NA port had lows in the 300's. The PowerGen Apple port could barely peak in the 300's with lows in the single digits. The Samsung S4 charger had peaks in the 1500mA range and lows in the 1400 range.
Both car chargers were miserable, with peaks in the 300's and lows in the single digits.
Samsung Galaxy S4 results:
The Samsung values didn't fluctuate like the Nexus did. In spite of it being set to update every second, it just showed a constant charge value. I'm not smart enough to divine what might be the cause but I am assuming it may be due to the widget compatibility or how the S4 reports charging amperage, I cant imagine that it doesn't fluctuate.
On all chargers it showed 1200mA charging rate, even on the Apple port of the PowerGen charger. It is interesting that the N5 pulls a better charging rate off of the Samsung charger than its own phone does.
I also decided to try out some 3rd party cables to see how they might perform. On the S4 power adapter with a generic eBay/Amazon cable the N5 pulled around 400mA and the S4 pulled 600mA. With a generic cable from Fry's the N5 pulled into the 900's while the S4 pulled 1200mA.
I have a couple more chargers on order and will update this along with links if anyone is interested.
I am still on the hunt for a good dual port charger (both car and wall) that can fast charge a Nexus 5 and another Android device (Nexus 7, Galaxy S4, etc) so if anyone has any good leads, it would be appreciated.
Here is a screenshot of the N5 with the 4 widgets to illustrate the wide fluctuations:

Ok, It turns out that not all cables that report "Charging (AC)" are created equal, more on that below.
I got more chargers in the mail:
From left to right: Anker dual port car charger with PowerIQ, CHOETECH, Pwr+ single charger, Pwr+ dual charger.
The Anker dual port car charger with PowerIQ is great. I can get 1A+ on either port on the Nexus 5.
Both the Pwr+ chargers gave 1A+ charging. They have fixed cables. The power supply for the dual charger is a bit big but its still better than carrying two single chargers.
The CHOETECH also worked great, giving 1A+ charging with the included cable. Here is where the interesting part with the different USB cables come in. The included cable showed Charging (AC), as expected. However, when I plugged the stock Samsung or the Motorola SKN6378A from A4C they only reported USB which is odd because they report Charging (AC) on other chargers. They could also only pull around 400mA from the CHOETECH. The CHOETECH's included cable showed Charging (AC) and pulled 1A+ on the other chargers. It was even able to pull 1A+ on both ports of the PowerGen charger when the other "good" cables could only pull good amps off of the NA side.
So it seems that it can be important to be able to pair the right USB cable with the right charger.
Here are the Amazon links to the chargers listed above:
Anker car charger: http://www.amazon.com/gp/product/B00D82O68Y/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
CHOETECH: http://www.amazon.com/gp/product/B00IG05402/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
Pwr+ single charger: http://www.amazon.com/gp/product/B009STIJWA/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
Pwr+ dual charger: http://www.amazon.com/gp/product/B00JKSMXLC/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

Reserved again.. cuz the first one was so much fun!

phoenyx said:
N5, N7 and PowerGen (NA port) all peaked in the 900mA range but the readings were constantly fluctuating between the peak and the 600mA range except for the PowerGen NA port had lows in the 300's. The PowerGen Apple port could barely peak in the 300's with lows in the single digits. The Samsung S4 charger had peaks in the 1500mA range and lows in the 1400 range.
Click to expand...
Click to collapse
That's very odd. I have a 2012 N7 charger and I am able to get an average of 1.6A with my Nexus 5. I do my measurements differently (I take the charge time between two known percentages and use that to calculate the average current) but it shouldn't cause that significant a difference. The issue with the current meter widgets is that they're measuring the total current flowing into the battery. That means that anything that is using power on the device (screen, CPU, etc...) causes a fluctuation in the current reading. The charger itself is providing a fairly flat current, your phone's usage is changing rapidly over time.
The reason you see low charging rates on the car chargers/apple chargers with the Nexus 5 is probably due to the charging method being used. Apple chargers put a voltage across the data pins to tell the phone the charging rate of the adapter. Android chargers short the two data pins to tell the device that it's a charger and not a USB port. When you plug the Nexus 5 into a charger designed for an Apple device, the Nexus 5 thinks it is a computer and won't pull more than 500mA off of the charger. If you check the battery menu during that time you will likely see that it says "Charging (USB)" instead of "Charging (AC)." Some of the cables I have cause this issue as well. Monoprice's Premium USB cables are super cheap, guaranteed for life and charge every phone I have tested properly assuming the charger itself isn't an issue.
http://www.monoprice.com/Product?c_id=103&cp_id=10303&cs_id=1030307&p_id=9762&seq=1&format=2
As far as a charger recommendation, I love Anker products. Their "PowerIQ" chargers will charge any device at its maximum rate.
http://www.amazon.com/Anker®-Dual-P...MK/ref=sr_1_14?ie=UTF8&qid=1405347957&sr=8-14
Two Nexus 5s will charge at 1.6A each on this charger. The only issue is that they don't have a good wall charger with PowerIQ. The only option is this "desktop" charger.
http://www.amazon.com/Family-Sized-...ETFG/ref=sr_1_1?ie=UTF8&qid=1405348099&sr=8-1
I followed up with them and they said that more PowerIQ chargers were coming over the summer, but I haven't seen anything yet.
You can also use a "charge only" cable to get the maximum from any charger.
http://www.amazon.com/PortaPow-Micr...TYUE/ref=sr_1_1?ie=UTF8&qid=1405348221&sr=8-1
That should allow you to get a better charge out of the "Apple" port on the "A/NA" charger you have.

raptir said:
That's very odd. I have a 2012 N7 charger and I am able to get an average of 1.6A with my Nexus 5. I do my measurements differently (I take the charge time between two known percentages and use that to calculate the average current) but it shouldn't cause that significant a difference.
Click to expand...
Click to collapse
Thanks for the reply. Admittedly, it wasn't a very scientific approach and I could have been more accurate but my goal was to just show that two Android phones using the same chargers and cables were getting different vastly different results. Especially that the Galaxy S4 could get 1200mA on the Apple port while the Nexus 5 couldn't even get half that.. and they are using the same charger, same cable and both widgets are showing AC charging (FWIW I tested all the cables on each charger, each showed AC and all had the same results across setups).
raptir said:
The issue with the current meter widgets is that they're measuring the total current flowing into the battery. That means that anything that is using power on the device (screen, CPU, etc...) causes a fluctuation in the current reading. The charger itself is providing a fairly flat current, your phone's usage is changing rapidly over time.
Click to expand...
Click to collapse
Yes, I am aware of that and I guess I should have explained it better. I had two points about this. The first was that the Galaxy S4 didn't fluctuate while the N5 did, but I suspect that has to do with the way the app is interacting with the phone.
The second was that on the Nexus 5 with 4 instances of the widget from the same app, all set to update 1 second apart were showing 4 very different amperage readings when they were supposed to be getting the sample at the same time. I just found it curious is all.
raptir said:
The reason you see low charging rates on the car chargers/apple chargers with the Nexus 5 is probably due to the charging method being used. Apple chargers put a voltage across the data pins to tell the phone the charging rate of the adapter. Android chargers short the two data pins to tell the device that it's a charger and not a USB port. When you plug the Nexus 5 into a charger designed for an Apple device, the Nexus 5 thinks it is a computer and won't pull more than 500mA off of the charger. If you check the battery menu during that time you will likely see that it says "Charging (USB)" instead of "Charging (AC)." Some of the cables I have cause this issue as well. Monoprice's Premium USB cables are super cheap, guaranteed for life and charge every phone I have tested properly assuming the charger itself isn't an issue.
Click to expand...
Click to collapse
That it what I understood as well. Which is why I am mystified why one Android phone (S4) can pull 1200mA off an Apple port but a different Android phone (N5) can't, using the exact same cable and showing AC Charging on the widget. I would be interested to hear if you have any ideas on why that would be.
raptir said:
As far as a charger recommendation, I love Anker products. Their "PowerIQ" chargers will charge any device at its maximum rate.
http://www.amazon.com/Anker®-Dual-P...MK/ref=sr_1_14?ie=UTF8&qid=1405347957&sr=8-14
Click to expand...
Click to collapse
I ordered that when I was having issues with the Nexus 5 on my current car charger, it should be here any day now. It was one of the ones I mentioned in the original post that is on order. Their description of PowerIQ made me hopeful, but then I read a product description of one of their other products with PowerIQ on their website and it talked about Apple and non-Apple ports so now I'm just hoping that it will work the way I originally thought/hoped it would.
It was the car charger that alerted me to the possibility of a difference in charging performance between the Galaxy S4 and N5. I noticed that when I drove around with navigation on the Galaxy S4 could charge up decently while the Nexus 5 wouldn't charge much if at all using the same cable and charger.
raptir said:
Two Nexus 5s will charge at 1.6A each on this charger. The only issue is that they don't have a good wall charger with PowerIQ. The only option is this "desktop" charger.
http://www.amazon.com/Family-Sized-...ETFG/ref=sr_1_1?ie=UTF8&qid=1405348099&sr=8-1
Click to expand...
Click to collapse
I almost ordered that last week until I ready that other product description. I decided to wait to see how the car charger above works.
raptir said:
I followed up with them and they said that more PowerIQ chargers were coming over the summer, but I haven't seen anything yet.
Click to expand...
Click to collapse
That is great news! If this PowerIQ works like I hope it works, I'll be happy. Thanks for that info!
raptir said:
You can also use a "charge only" cable to get the maximum from any charger.
http://www.amazon.com/PortaPow-Micr...TYUE/ref=sr_1_1?ie=UTF8&qid=1405348221&sr=8-1
That should allow you to get a better charge out of the "Apple" port on the "A/NA" charger you have.
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Click to collapse
That is also one of the cables I mentioned in the OP that are on order. Unfortunately since my other cables here are showing AC Charging, I am assuming they have the data pins shorted and so I'm not expecting anything from this. This still doesn't really answer the question of why the Samsung can pull a better charge out of an Apple port than the Nexus 5. Any ideas? Same cables and all.
Thanks again.

phoenyx said:
Thanks for the reply. Admittedly, it wasn't a very scientific approach and I could have been more accurate but my goal was to just show that two Android phones using the same chargers and cables were getting different vastly different results. Especially that the Galaxy S4 could get 1200mA on the Apple port while the Nexus 5 couldn't even get half that.. and they are using the same charger, same cable and both widgets are showing AC charging (FWIW I tested all the cables on each charger, each showed AC and all had the same results across setups).
That it what I understood as well. Which is why I am mystified why one Android phone (S4) can pull 1200mA off an Apple port but a different Android phone (N5) can't, using the exact same cable and showing AC Charging on the widget. I would be interested to hear if you have any ideas on why that would be.
Click to expand...
Click to collapse
Well, what I posted mainly applies to the Nexus phones. I think Samsung has put some more intelligent circuitry in the Galaxy S4/S5 that allow it to charge on Apple ports as well. It's not a hard and fast rule, it's just the "standard." The S4 is hard-capped at 1200mA though, so the Nexus 5 will charge faster on an appropriate charger.
phoenyx said:
Yes, I am aware of that and I guess I should have explained it better. I had two points about this. The first was that the Galaxy S4 didn't fluctuate while the N5 did, but I suspect that has to do with the way the app is interacting with the phone.
The second was that on the Nexus 5 with 4 instances of the widget from the same app, all set to update 1 second apart were showing 4 very different amperage readings when they were supposed to be getting the sample at the same time. I just found it curious is all.
Click to expand...
Click to collapse
Interesting. My guess would be that even though they're supposed to poll at the same time, they're really pulling the data in quick succession. As in they end up in the service's queue and receive the data at slightly different timepoints as a result.
phoenyx said:
I ordered that when I was having issues with the Nexus 5 on my current car charger, it should be here any day now. It was one of the ones I mentioned in the original post that is on order. Their description of PowerIQ made me hopeful, but then I read a product description of one of their other products with PowerIQ on their website and it talked about Apple and non-Apple ports so now I'm just hoping that it will work the way I originally thought/hoped it would.
It was the car charger that alerted me to the possibility of a difference in charging performance between the Galaxy S4 and N5. I noticed that when I drove around with navigation on the Galaxy S4 could charge up decently while the Nexus 5 wouldn't charge much if at all using the same cable and charger.
I almost ordered that last week until I ready that other product description. I decided to wait to see how the car charger above works.
That is great news! If this PowerIQ works like I hope it works, I'll be happy. Thanks for that info!
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Click to collapse
Well, I don't have a Galaxy device but I do know that the PowerIQ chargers work great for the Nexus 5. I get the full 1.6A current that the Nexus 5 can accept. It charges it from dead in under an hour and a half. It's great for recharging on my way home from work.
I did see on their website that they have a two-port wall charger on their PowerIQ page, but when you click through to Amazon it shows as the old A/NA charger.
http://www.ianker.com/poweriq/poweriq.html
Hopefully they actually update it soon.
phoenyx said:
That is also one of the cables I mentioned in the OP that are on order. Unfortunately since my other cables here are showing AC Charging, I am assuming they have the data pins shorted and so I'm not expecting anything from this. This still doesn't really answer the question of why the Samsung can pull a better charge out of an Apple port than the Nexus 5. Any ideas? Same cables and all.
Thanks again.
Click to expand...
Click to collapse
As far as Samsung vs Nexus, see above. I've personally never experienced a slow charge out of a charger that showed "Charging (AC)." Very odd. If you're getting the Anker chargers, I would pair them with the Monoprice Premium cables.
http://www.monoprice.com/Product?c_id=103&cp_id=10303&cs_id=1030307&p_id=9762&seq=1&format=2
I can attest that the Anker charger or my Nexus 7 2012 charger plus a Monoprice cable will charge all the devices I've tried at full speed (Nexus 7 2012, Nexus 5, Nexus 4, Kindle Fire HDX, and my friend's Razr M). Their "non-premium" cables work well also, but I find that they wear out. They do replace them for free though.

raptir said:
Well, what I posted mainly applies to the Nexus phones. I think Samsung has put some more intelligent circuitry in the Galaxy S4/S5 that allow it to charge on Apple ports as well. It's not a hard and fast rule, it's just the "standard." The S4 is hard-capped at 1200mA though, so the Nexus 5 will charge faster on an appropriate charger.
Click to expand...
Click to collapse
I see. I was assuming it was the standard that all Android phones used to determine charge rates... lol. Silly me. What you say makes sense and is what I was afraid of. I was hoping I was "doing it wrong" or there was some other trick to getting more charge out of the PowerGen wall chargers that I have. I will give it another shot with the cables I have on order when they come in. I will see how it goes and maybe I'll order that Monoprice to try out as well.
raptir said:
Interesting. My guess would be that even though they're supposed to poll at the same time, they're really pulling the data in quick succession. As in they end up in the service's queue and receive the data at slightly different timepoints as a result.
Click to expand...
Click to collapse
That's kind of what I was thinking too but then again, the widgets are only reporting information the main app is seeing. You would think that when the app takes a sample at a given time, it is that info that is transmitted to all the app instances so the info should be the same. Apparently not. It's not a big deal, I just notice and am curious about strange things sometimes.
raptir said:
Well, I don't have a Galaxy device but I do know that the PowerIQ chargers work great for the Nexus 5. I get the full 1.6A current that the Nexus 5 can accept. It charges it from dead in under an hour and a half. It's great for recharging on my way home from work.
Click to expand...
Click to collapse
That is great news! I'm looking forward to getting mine in the mail soon. I'll post what I find with that charger along with the other ones I have coming.
raptir said:
I did see on their website that they have a two-port wall charger on their PowerIQ page, but when you click through to Amazon it shows as the old A/NA charger.
http://www.ianker.com/poweriq/poweriq.html
Hopefully they actually update it soon.
Click to expand...
Click to collapse
Me too. I'll be keeping an eye out for that. Which PowerIQ chargers do you have? Just the car charger or do you have this 2 port wall charger too?
raptir said:
As far as Samsung vs Nexus, see above. I've personally never experienced a slow charge out of a charger that showed "Charging (AC)." Very odd. If you're getting the Anker chargers, I would pair them with the Monoprice Premium cables.
Click to expand...
Click to collapse
I think the Nexus 5 only really got a slow charge with Charging (AC) showing out of the Apple port on the PowerGen and car chargers. When the same cable is plugged into the non-Apple, it works fine. Kind of disappointed that I cant get the same performance on the Apple port like the Galaxy does. I bought a bunch of these when I was using the Galaxy. Makes me apprehensive about buying more chargers that may not work that well.
I'll play around a bit more with the new cables and see what I can find. Thanks again for the info and the recommendations.

phoenyx said:
Me too. I'll be keeping an eye out for that. Which PowerIQ chargers do you have? Just the car charger or do you have this 2 port wall charger too?
Click to expand...
Click to collapse
I have the two-port car charger and an external battery (second-gen Astro2). I really want a 2-port wall charger (to use with my Kindle Fire and Nexus 5 at home) but I haven't been able to find one.

raptir said:
I have the two-port car charger and an external battery (second-gen Astro2). I really want a 2-port wall charger (to use with my Kindle Fire and Nexus 5 at home) but I haven't been able to find one.
Click to expand...
Click to collapse
Check out this cable: http://www.amazon.com/gp/product/B00JKSMXLC/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
I just got it in the mail and it works good with the N5. Rated at 4A.
I put the new chargers in the 2nd post above and also noted that cables that report Charging (AC) on some adapters will only report USB (and lower charging rates) on other adapters.

phoenyx said:
Check out this cable: http://www.amazon.com/gp/product/B00JKSMXLC/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
I just got it in the mail and it works good with the N5. Rated at 4A.
I put the new chargers in the 2nd post above and also noted that cables that report Charging (AC) on some adapters will only report USB (and lower charging rates) on other adapters.
Click to expand...
Click to collapse
The only issue is a really want something with detachable cables. So I can change length/connect my wireless charger to it.

http://forum.xda-developers.com/showthread.php?p=52142798

fyi samsung galaxy phones aren't really compatible with current widgets.
use an external meter for accurate measurements

Akoolive said:
http://forum.xda-developers.com/showthread.php?p=52142798
Click to expand...
Click to collapse
Yea I've seen that post.. It's a good one but like another poster here I'm after chargers with USB cables that are detachable and dual chargers. I created this mainly to cite some observations that all chargers may not perform equally on different phones.
Nevertheless, thank you for your reply and for posting the link.
sucsss said:
fyi samsung galaxy phones aren't really compatible with current widgets.
use an external meter for accurate measurements
Click to expand...
Click to collapse
Thanks. I kinda figured it must be a compatibility issue. However, an external would only show how much the charger could put out, which is not the same as how much the phone will take.. Unless you measure it inline. Other than that you'd have to take a sample over time and do the math.
I got the Anker dual car charger and it has been great. So I orders ordered a couple more. the PowerIQ seems to be the key for their chargers.
Sent from my Nexus 5 using Tapatalk

phoenyx said:
Thanks. I kinda figured it must be a compatibility issue. However, an external would only show how much the charger could put out, which is not the same as how much the phone will take.. Unless you measure it inline. Other than that you'd have to take a sample over time and do the math.
I got the Anker dual car charger and it has been great. So I orders ordered a couple more. the PowerIQ seems to be the key for their chargers.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
I don't want to sound condescending but that's exactly how it would work. A good charger can only output up to the max designed. It's completely dependent on what the phone wants.
To measure amps the meter is in serial circuit and to measure voltage it's in parallel. The prebuilt usb meters are only a few bucks on ebay. I use a multimeter to check that the usb meter is correct.
And most phones will attempt to do their max charge rate when below 80-90% battery. (if temperatures allow). So you don't need a fancy graph. Just plug in the phone with low battery and not overheating and it'll try to charge at the max rate it can.

sucsss said:
I don't want to sound condescending but that's exactly how it would work. A good charger can only output up to the max designed. It's completely dependent on what the phone wants.
To measure amps the meter is in serial circuit and to measure voltage it's in parallel. The prebuilt usb meters are only a few bucks on ebay. I use a multimeter to check that the usb meter is correct.
And most phones will attempt to do their max charge rate when below 80-90% battery. (if temperatures allow). So you don't need a fancy graph. Just plug in the phone with low battery and not overheating and it'll try to charge at the max rate it can.
Click to expand...
Click to collapse
LOL.. You sound more confused about what I've said than condescending. I've never implied a charger will charge more than its rated for. If I did, please show me where I said that so i can correct it because that was not my intention.
I know it was probably a little bit of a confusing post since i kind of mashed several thoughts together (and this one is probably no better... I've been up way too long and sorely jet lagged.. LOL) but if you read the thread I stated that I observed different USB/phone combos will charge at varying rates... Even between "good" USB cables on the same charger.. even when they are showing AC charging. It was my impression that two "good" USB cables that report AC charging would perform similarly on the same charger or one would have similar performance across similar chargers. That is apparently not the case.
Also as I originally posted it's just observations... Not trying to geek out on it and be pedantic over it. However the USB meter you mentioned sounds interesting, maybe I'll pick one up. Thanks for the suggestion.
Anyway, I'm pretty happy with the Anker chargers so I think I'll stick with them.
Thanks for your input..
Sent from my Nexus 5 using Tapatalk