Develop Bugs

Automobile Quick Charging Solution

What is the best solution for quick charging the Galaxy Nexus in an automobile?

I have started to use 12-220 volt converter so I can use wall chargers.

I have bought a few of the low profile car usb chargers but they were never recognized as an AC charge. Come to find out, it was the USB cable. I bought a usb charging cable from Amazon last week and it goes in the USB charger and the phone does not think it is a USB charge. I have not timed it but it is recognized the same as the wall charger.
http://www.amazon.com/gp/product/B003VYBCAY

ellisz said:
I have bought a few of the low profile car usb chargers but they were never recognized as an AC charge. Come to find out, it was the USB cable. I bought a usb charging cable from Amazon last week and it goes in the USB charger and the phone does not think it is a USB charge. I have not timed it but it is recognized the same as the wall charger.
http://www.amazon.com/gp/product/B003VYBCAY
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Click to collapse
+1 .. this solution has been working great for me, as well.

I've been getting 2.1A car chargers (look for ones for the iPad), most of the ones I had prior to this were 700mA or so and they can't keep up with my 1A phones. Be careful of dual port chargers advertising 2A, they may only be 1A each and may be "optimistic" about that rating. And don't worry about getting one rated for too much current, the Galaxy Nexus won't pull more than an amp no matter what the charger rating.

Some really good solutions here and thank you all for the help.
I'd really hate to use an inventer in my car just to maintain a clean install, so that really isnt an option for me.
Was really hoping to be able to use a off the shelf car charger with the correct pins to trick the GNexus into thinking that it was charging from a USB port, but the above solution should work well with using a socket USB charger.

I've never run into a car adapter that looks like a USB port, including the VZW charger with a spare port or the cheap 2.1A chargers I got from Amazon. My guess is that a charger not built correctly and leaving the data pins open only supports ~500mA anyway. Even if that's not the case I have a moral objection toward buying a cable to fix a design flaw in another cheap product - but that's just me

Grant H said:
Some really good solutions here and thank you all for the help.
I'd really hate to use an inventer in my car just to maintain a clean install, so that really isnt an option for me.
Was really hoping to be able to use a off the shelf car charger with the correct pins to trick the GNexus into thinking that it was charging from a USB port, but the above solution should work well with using a socket USB charger.
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Click to collapse
I've got a charger similar to http://www.ebay.com.au/itm/USB-Car-...ccessories&hash=item4ab18358f4#ht_1638wt_1392
All I had to do was undo the screws at the top, put a bit of solder between the middle usb pins, and my phone recognises it as a AC source rather than USB.

There has got to be a standard car charger on the market with the middle usb pins already soldiered!
I found this on Amazon which advertises itself as a rapid charging device.
http://www.amazon.com/gp/product/B000S5Q9CA

Grant H said:
What is the best solution for quick charging the Galaxy Nexus in an automobile?
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Click to collapse
Make sure the charger has the IC (rapid) chip. I use this one:
http://www.amazon.com/Motorola-Vehicle-Adapter-micro-USB-Charger/dp/B000S5Q9CA

I've heard that Motorola one mentioned a lot as a good one.
The nice thing about having the low-profile usb plug is (a) it is low profile, (b) I can use it to charge other devices. The charge-only cable is only about $4, so I had no issues buying it to work with this to charge as an AC charge over a USB charge.

Grant H said:
There has got to be a standard car charger on the market with the middle usb pins already soldiered!
I found this on Amazon which advertises itself as a rapid charging device.
http://www.amazon.com/gp/product/B000S5Q9CA
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Click to collapse
I have this one and it charges just like it does from the home outlet and its says "AC" charging. I bought another 8 for family and friends and they all love it.

I think I've figured out the disconnect, I've run into chargers that appear as a USB host which limits the charging to 500mA on previous phones I've had.
You guys are concerned about USB vs. AC charging mode. Of the chargers I've got, this one lists as AC while the rest as USB. However, the fact that the other chargers all work just fine keeping up with GPS+streaming music indicates that the USB vs. AC really has no bearing on the charge current delivered. I'd stay away from charge-only cables just because they'll get mixed in with your standard USB cables and you'll knock yourself out wondering why they don't work. On the other hand, if you really want AC in your battery info order the one I linked.

I keep it in my car... i think I've heard on other threads that USB charging doesn't keep up with GPS (for Directions). Any verify?
Sent from my Galaxy Nexus using XDA App

TheKaz said:
I keep it in my car... i think I've heard on other threads that USB charging doesn't keep up with GPS (for Directions). Any verify?
Sent from my Galaxy Nexus using XDA App
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What's much more important is the rating on the power source. The GN can pull up to 1000mA, if your charger is only rated for 800mA (like many car chargers) it doesn't matter if it's in AC mode.

jdbower said:
What's much more important is the rating on the power source. The GN can pull up to 1000mA, if your charger is only rated for 800mA (like many car chargers) it doesn't matter if it's in AC mode.
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makes sense.. the one I use has dual usb (1.0 and 2.1)

You went and gave me a project for the weekend, and once again science prevails over anecdotal evidence. I took each of my 5 chargers and hooked them up to a 12V power supply that measures current. I then recorded whether the charger reported AC or USB, for the ones with USB I modified a right-angle adapter to short out the data pins, and I measured the current. The contenders:
Verizon Wireless Dual Charger
XTG Dual Port Charger
Griffen Powerjolt Dual USB Charger
Griffen Portjolt Micro
CostMad Dual USB Charger
The VZW model was USB out the external port as I had tested before, however AC out the built-in cable which I hadn't bothered to test. It pulled 0.25A @12V via the USB port and 0.59A via the cable. Hmmm... A hole develops in my previous observation. While I had used this on a long car trip with no issues, it was via the built-in cable.
The XTG was new, I hadn't used it before as it's in the car I rarely drive. It reported USB and 0.22A. With the adapter to make it report AC it pulled 0.48A.
The pattern was set. I had expected the Griffen adapters to be built more appropriately but the dual charger reported 0.22A without the adapter and 0.42A with. I had used this without losing charge in the past so this was surprising to me, but it's possible I just wasn't drawing as much current because the screen was dimmer or something.
The compact Griffen adapter (which is great for a laptop bag, BTW) pulled 0.21A and 0.47A respectively.
The cheap CostMad adapter was the only one that performed well out of the box, both reporting AC and pulled 0.57A.
In theory, a perfect adapter should pull 0.42A. Anything more is waste, anything less means it's not keeping up. I have doubts about the Griffen 2x allowing for a full amp, but the VZW and CostMad chargers are pretty lossy. What's even worse is that I'm pretty sure the VZW charger is rated for 800mA (but I can't find an actual spec on it) which would mean that it pulled the most power for the least current. Not that this really matters unless you've got an electric car.
Sorry for misleading you earlier, I should have checked the other port of the known-good VZW charger and probably doublechecked the numbers on my other "known good" charger. Still hating cables that work for charging but not for data, I ended up modifying each of the chargers to short the middle pins (except for the VZW one). If I didn't have the soldering iron for this, I probably would have gone for some of these instead.

Grant H said:
There has got to be a standard car charger on the market with the middle usb pins already soldiered!
I found this on Amazon which advertises itself as a rapid charging device.
http://www.amazon.com/gp/product/B000S5Q9CA
Click to expand...
Click to collapse
CyberPunk7t9 said:
Make sure the charger has the IC (rapid) chip. I use this one:
http://www.amazon.com/Motorola-Vehicle-Adapter-micro-USB-Charger/dp/B000S5Q9CA
Click to expand...
Click to collapse
I'm using the same one and it works perfect. Charges even when GPS navigation is running.
Make sure you select Amazon as the seller though. I heard there are a lot of fake ones.

Grant H said:
There has got to be a standard car charger on the market with the middle usb pins already soldiered!
I found this on Amazon which advertises itself as a rapid charging device.
http://www.amazon.com/gp/product/B000S5Q9CA
Click to expand...
Click to collapse
+1 to those recommending this one. I have this exact model and it does indeed charge at the "AC" rate, about twice as fast as the "USB" rate.

TheKaz said:
I keep it in my car... i think I've heard on other threads that USB charging doesn't keep up with GPS (for Directions). Any verify?
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
The Motorola one will charge even when using GPS. I have a friend I bought one for that uses his GPS all day and loves the Motorola charger.

[Q] nexus 7 wont charge except with official cable?

I tried charging my nexus 7 on 3 different cables, that work, and the it would not charge. My original cable is starting to come apart at the end and I needed to use a different cable but none of them work. Does anyone know why this is?

Inverted. said:
I tried charging my nexus 7 on 3 different cables, that work, and the it would not charge. My original cable is starting to come apart at the end and I needed to use a different cable but none of them work. Does anyone know why this is?
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I've been able to charge my N7 with multiple cable brands. I've used cables from ASUS (stock cable), Motorola, Monoprice, Logitech, and the stock S4 charger cable. Not sure if it would make a difference but are you using the stock wall outlet adapter?

Also are you sure it isn't charging or just that it doesn't show the charging indicator.
I've noticed some units don't indicate they are charging, but if you leave it connected, the battery level does increase.

i have used many cables offician and third brands, without problems. do you use stock firmware or custom? root or unrooted?

The cable that came with N7 was left in the box ever since I bought the tablet. Charging has never been a problem with any other cable that I used. Now I am used to charging wirelessly most of the time though.

mine can be charged fine from various cables and adaptors.
i suppose it's defective and suggest you claim if still possible!

P605 Charging Issues - Voltage?

I've had some trouble charging my new tablet.
When I first received the tablet, I plugged it in to the supplied cable and allowed it to charge to 100%.
I used it for a day to run the battery down.
I then left it plugged in to the computer with a standard cable for 11 hrs.
It appears that it didnt charge at all.
Now I drove all the way back to my office to test it again with the factory supplied cable and it does appear to be charging slowly but it is totally discharged.
I've experienced intermittent issues with charging. Seems like it prefers but doesnt require the samsung charger/cable. Are the voltages and everything the same?

Yeah, seems like it wont charge on a usb port. Only seems to rocognize the supplied samsumg charger...

Apache0c said:
Yeah, seems like it wont charge on a usb port. Only seems to rocognize the supplied samsumg charger...
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Click to collapse
Do you see that the battery icon has a red X over it when you have it plugged into the computers USB port. The tablet needs the power that the supplied Samsung charger puts out to charge that big battery.
On page 9 of the users manual it says "Note: You cannot charge the battery using the USB cable and
your PC"
.

so is it just a 2A usb charger?

When it's got the red cross over the battery symbol (when it's plugged into a computer USB or car charger etc) it does still charge, but very slowly. Probably only with the screen off.

Apache0c said:
Yeah, seems like it wont charge on a usb port. Only seems to rocognize the supplied samsumg charger...
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Click to collapse
It charges with any standard charger. I use non-samsung charger and it charges fine, in fact I have not removed the original charger from the box.
As with USB it does charge but really slowly, while it shows not charging.

I believe that a standard USB is 1A and the note 2014 is 2A. Can anyone confirm?

Apache0c said:
I believe that a standard USB is 1A and the note 2014 is 2A. Can anyone confirm?
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Click to collapse
Yes, this is correct, my standard Galaxy S4 is 1A, however a computer may put out even less than this.

Apache0c said:
I believe that a standard USB is 1A and the note 2014 is 2A. Can anyone confirm?
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Click to collapse
No. Standard USB 2 port supplies 0.5A. USB 3 port will supply like 1.5A or less. As for USB 2, you may install (if motherboard supports it) ASUS Ai Charger so that it supplies 1A.
I have gigabyte mb and it has its own driver to over supply usb 2 current. With that I have about %6/hour charging rate if screen is off. Using Samsung own charge, I got about %24/hour.
PS: Look like my desk usb 2 port supplies .5A only (%6x4=%24).

GinTMonster said:
Yes, this is correct, my standard Galaxy S4 is 1A, however a computer may put out even less than this.
Click to expand...
Click to collapse
I think you're right. I'm using a 2.1A CostCo Charger and it seems to be charging the 2014 P-605 perfectly.
howard30 said:
No. Standard USB 2 port supplies 0.5A. USB 3 port will supply like 1.5A or less. As for USB 2, you may install (if motherboard supports it) ASUS Ai Charger so that it supplies 1A.
I have gigabyte mb and it has its own driver to over supply usb 2 current. With that I have about %6/hour charging rate if screen is off. Using Samsung own charge, I got about %24/hour.
PS: Look like my desk usb 2 port supplies .5A only (%6x4=%24).
Click to expand...
Click to collapse
Not to be rude, but what you wrote here makes no sense to me .

i got the charging issue also, with original charger 2A, original USB cable
checking with galaxy current, value at 900mA

my tablet charges perfectly with original charger and cable but using every standard usb charger (2A and 700mA) it charges but the "connection" is unstable: it's like usb is connecting and disconnecting repeatedly.
I've checked every connection, using the same charger and cable with another phone the connection is stable.
Anyone with the same issue?
(rom xKat on P605)

[SOLVED] SM-P605 (kitkat) battery charging problem

It is solved! Some 3rd-party usb chargers have same issue.
Samsung standard charger works very well.
I have a Galaxy Note 10.1 2014 edition (Hongkong, TGY).
Yesterday I updated my device to 4.4.2 (P605ZSUCNE3_P605OZSCNE3_TGY) with Odin.
Upgrading was OK, everything works fine except a battery charging problem.
When device connects to a usb charger, the battery stops charging after 1-2 minutes although not 100%.
I tried something but nothing helps.
- Changing charger/cable to another
- Factory reset (Recovery mode)
- Flashing P605XXUCNE2_P605OXACNE2_NEE (Nordic) Firmware
- Power off mode charging -> It works. This is the only way to make device 100% that I found.
Click to expand...
Click to collapse

Having same issue. Seems to stop when screen times out

SM-P605 battery issue (I still have one!)
kissfan said:
Having same issue. Seems to stop when screen times out
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Click to collapse
I've got the same issue following the 4.4.2 update, all my third party charges that worked fine before the update no longer work. Battery management software show the device getting the same mA of current to the battery but the device is not charging (it says that it is!).
Original charger does work but is not a valid solution for me, why are the non-oem chargers not working all of a sudden and how do I get them to work again?
---------- Post added at 08:55 AM ---------- Previous post was at 08:06 AM ----------
kissfan said:
Having same issue. Seems to stop when screen times out
Click to expand...
Click to collapse
I've got the same issue following the 4.4.2 update, all my third party charges that worked fine before the update no longer work. Battery management software show the device getting the same mA of current to the battery but the device is not charging (it says that it is!).
Original charger does work but is not a valid solution for me, why are the non-oem chargers not working all of a sudden and how do I get them to work again?

I'm having the same problem, trying to fix with some charger mods (shorting data pins of USB) or fast charge kernel. The kernel hack did not work yet, but shorting the d+ and d+ pins of usb cable on device end works. (although I could achive max 1.5mah)

According to this
http://www.androidpolice.com/2014/0...t-on-the-note-3-but-there-is-a-root-solution/
Samsung denies any intentional blocking and a connection between KitKat and third party accessories.
I tried my third party chargers and they too didn't work. Charging stopped when the screen turned off. However, my Motorola and HTC chargers do work. Maybe the third party tings have inconsisten voltage output or something like that.

I had the new Tab s 10.5 and some of my usb chargers would not work. I found a deal way to good to pass up so I returned the Tab s and THOUGHT I was getting a Note 10.1 2014 wifi. Yet lol I didnt I got a 605 which is AWESOME ..I just always wanted the SnapDragon chip. It was a tad over $400 32gb NEW.
Anyway so I turn it on set it up and it was downloading 4.4 already I wanted to stay with 4.3 after reading around here. Yet so far it works flawless. All my usb chargers work. I can be doing ANYTHING and it keeps charging. Like I said the Tab s I could ONLY use Samsungs.

In my case Android 4.4 for P605 is way better than 4.3. Great battery live, great performance, no or very small lags. But I had initial release of 4.3 ROM which was never updated.

I have a third party charger and it goes well. It is Chinese no marks.

If it is just shorting the data pins, then it will charge. But you will be limited to 1500mah.

I think it needs an Apple compatible charger. Only the Apple standard supports charging over Usb 2 at 2A, for the Ipad.
The Anker 5 port 8A charger is fantastic.

lecorbusier said:
I think it needs an Apple compatible charger. Only the Apple standard supports charging over Usb 2 at 2A, for the Ipad.
The Anker 5 port 8A charger is fantastic.
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Click to collapse
No, I did that mistake and bought a dual port 4a charger. Samsung somehow detects Apple charger and stops charging when screen turns off. I had to make an adapter for shorting data pins, like this, I can at least charge with 1.5a

while i was on vacation my p605 starts having the same problem. It is just loading while the screen is on. After getting black/off it takes a few more seconds till charging stops. This problem is accompanied by the symptom that the tablet won't be recognized by the pc anymore. It is just loading ('til the screen gets black). i have no idea what to do. i am not sure, if the different voltage on vacation could be a reason. based on the fact that i can't get it back to stock, i guess i can not get it repaired by warranty (or is there any way to get it stock? unfortunately mobile odin is not supported). i would be glad about some good hints and thank you in advance

Your cable or charger might have a problem or you may be using a different charger than original one.

Hi everyone,
I've found a bit different issue - my P605 (LTE) does not want to be charged when plugged into USB port (so, no charger is being used).
I tried both using laptop and stationary PC
//ok, nevermind. I've just found somewhere else, that it has been always like that (not noticed that before)

Exact same problem here - charging stops as soon as the screen lock kicks in, even with the original Samsung charger. Brought the tablet back to the tmobile store and had them connect to another Samsung charger - still happens.
Has anyone found a fix for this short of shorting the harger pins?

I don't follow my own advice, and never had this problem. But charge with the original cable where the two GND pins are connected. In most cables one of them is open.
My old Garmin Street Pilot with mini usb used the second GND pin to determine whether to remain operational and charge, or go into pc connectivity mode and do nothing else.

I have the same problem . After upgrading to Kit kat just a few days ago it would stop charging moments after the screen turns off. No matter what cable or charger

This happens to me only when I'm not using original 5.3v charger and original cable. Check your cable and charger. (although I think it works with 5v Samsung charger of my note 3 as well)

My last charger had 4.9v with no load, and certainly lower with a 2A load. No Problems. But if a charger is badly stabilized, it may drop too much, and the Note is very demanding, with twice the current of a typical phone.
I had a DIY adapter to charge my old Nokia stuff via USB. The Nokia chargers have a 5v spec, but one provided 6v, another 7v. And USB voltage seemed too low, there was sort of sporadic charge, with the connection dropping after a short time. But all connections were fine, must have been a voltage thang.
So i still have to keep a Nokia charger ready, only to charge my Nokia BT headset.

Galaxy Note 10.1 2014 Edition Charging Fail
Has anyone discovered a fix for this:
When I plug in my tablet...Samsung Galaxy Note 2014 Edition...Using any plug (I have tried factory charger, and multiple alternatives including Ipad Charging adapters) when the screen is on the charging occurs, but When the screen closes about 2 seconds later the screen turns back on the way it does when charge is complete, only its still at same battery level as before! I have tried closing all apps and still the same, Used Task Manager to close all apps and clear the RAM and still nothing, Gone into app manager and closed running processes and still the same results! I am operating KitKat (OS since purchase) and the only actual way to charge it is to leave a plug in all day with the screen On, or shut off the Tablet!
Is there a fix for this or what?
Its bad enough that I cant find a good bluetooth keyboard that is compatible with this tablet! Im on the verge of trading it in and going Apple! Someone please help...Keep me from turning to Apple!
Is there a fix for this even if it requires manually adjusting chargers or the tablet itself (the internal components)?
thank you all for your help!
Semper Fi

Some questions on charging battery issue

Hey guys. Just wanna ask some question.
My note 10.1 2014 P601 is now running stock 5.1.1 un-rooted. Basically everything stock. I know that our Note need its own charger to work properly. But I lost the original charger long ago, and I've been using only the USB I bought separately to charge my tablet by connecting it to PC.
Now, my mother just bought a new phone (Galaxy A7) and when I try to charge my tablet with her charger, sometime it shows X mark (which means insufficient, exactly like when i connect to pc via USB cable) on the battery icon, but sometime it shows the lightning (which is fine) icon. The speed of the charge depends on that sign, if on lightning sign, from 0 to 100% takes about 4h. But if on the X mark sign, 4h will just get around 40%.
I don't really know what happened, but I have to unplug then re-plug again and again to get the lightning sign to come up. I then bought a new charger (from a legit well-known store and they said it's the best quality) and it does the same thing. I haven't got a chance to borrow anyone's original note charger yet as I found no one using this device. And now I start to think it's the problem with my Note more likely than anything. I haven't tried to reinstall the firmware either as I just updated the firmware like few months ago.
I've been using it for about a year btw. Sorry for my English. And looking forward to hear from you all.

The usb jack or its solder contacts may be damaged. Also, if no case is used and the backside of the Note squeezed when holding it in your hands, the cables for usb and display may work themselves slowly out of their pcb connectors. I don't know if the squeeze theory is right, but definitely there are many loose cables...
A charger must be Qualcomm Quickcharge or Apple iPad compatible, 5v 2A. I haven't used a Sammy Charger for a single time,tho they seem just too good to throw away.

lecorbusier said:
The usb jack or its solder contacts may be damaged. Also, if no case is used and the backside of the Note squeezed when holding it in your hands, the cables for usb and display may work themselves slowly out of their pcb connectors. I don't know if the squeeze theory is right, but definitely there are many loose cables...
A charger must be Qualcomm Quickcharge or Apple iPad compatible, 5v 2A. I haven't used a Sammy Charger for a single time,tho they seem just too good to throw away.
Click to expand...
Click to collapse
Are you sure the Qualcomm Quickcharge would work on this P601? I checked the list before and I didn't see the Note 10.1. Not even the Note 3 which was released together. I afraid that being "not compatible" might fry the device.
If you're using one and not having any problem, can you post the link to the product that you're using and working well?

I forgot about the different SoCs. However, all models charge at 5v/2A and the signaling technique used for Quickcharge seems to be borrowed from that of the Apple iPad, the Exynos based models should be just the same. I plugged my Note into an Apple compatible charger, which was from a time when Android smartphones were charging at 0,9A and Android tablets had proprietory connectors, and it was charging at 2A.