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It seems the only way to fast charge a N1 is with the supplied wall charger. Standard Micro USB chargers whould only allow at much as 450mA of charge current regardless of the adapter current capacity.
The bundled charger however, manages to push 900mA into the N1. I made a cut in the charger wires and measured the current draw to make sure.
Now.. I'd like my car charger to be able to do the same. There must be some hack in the plug of the N1 charger since there are only 2 conductors from the case to the plug. You can see that the plug is somewhat longer than similar Micro USB plugs..
So I tried to see if one of the 3 unused pins can tell me anything but.. they seem unconnected as far as I could tell. Diode measurement (to test for any digital part inside) also did not produce any results. The next obvious step is to take the molded plug apart but I'd rather not...
Does anyone have any clue as to what makes that plug so special?
And please - I did my tests with a bench power supply - not the car chargers - so don't go around telling me it has to do with charger current capacity.
Thanks,
Nir
are you sure the micro usb cords you are using are able to handle the amps? most chargers made prior to now, only push about 450mA, the G1, and N1 chargers i have push a full amp though. I just ordered a car charger that pushes an amp too. There is nothing "special" about the plug.
followinginsanity said:
are you sure the micro usb cords you are using are able to handle the amps? most chargers made prior to now, only push about 450mA, the G1, and N1 chargers i have push a full amp though. I just ordered a car charger that pushes an amp too. There is nothing "special" about the plug.
Click to expand...
Click to collapse
I beg to differ. All the cords can easily supply 1 AMP. It is the phone itself that decides how much to draw from the charger based on something IN THE PLUG.
I am an electronics engineer so do understand I know perfectly what I am talking about
And your 1A car charger does not supply anything over 0.45A to the phone.. you will see that if you are using the phone while it charges (say nav or phone call) the phone actually looses some charge albeit it being charged... This will not happen with the stock wall charger.
I have a 900mAh car charger that I use and it does in fact give 900mAh to the phone while charging. I can tell because I used a 450mAh charger at home before and it was slooow and I could drain my phone while charging it. With the car charger I can stream music with spotify, use the GPS, have the screen on full brightness and the battery % will still go up.
I also bought a new wall charger recently, which is 850mAh on the USB port and has a 350mAh charger for a loose battery as well, works quite nice.
Has anyone measured the voltage or put a scope on the output of the stock charger?
maybe stock charger has a slight variance in voltage over USB chargers or some signalling going on and this tells the N1 to take more current from it?
I would like a solution to this too I've seen my phone discharge while on a supposedly 1A car charger using co-pilot.
SBS_ said:
I have a 900mAh car charger that I use and it does in fact give 900mAh to the phone while charging. I can tell because I used a 450mAh charger at home before and it was slooow and I could drain my phone while charging it. With the car charger I can stream music with spotify, use the GPS, have the screen on full brightness and the battery % will still go up.
I also bought a new wall charger recently, which is 850mAh on the USB port and has a 350mAh charger for a loose battery as well, works quite nice.
Click to expand...
Click to collapse
Forget the numbers on the chargers - what counts is what really goes into the phone and that needs to be measured with a current meter (test equipment). What you may think to be fast might not be that.
Original HTC chargers obviously do the trick of fast charging but this comes at a price compared to the $3-$4 garden variety on Ebay and the likes.
now I cannot help you with the electronics at all, but, my old HTC Touch Pro charger seems to charge the same as the one which came with the phone, is this correct?
(suits me if it is, as then I have a charger for home and work)
my blackberry bold 2 charger only says it outputs 700MAh, but both the google and htc chargers both say 1.0A
dnts said:
Forget the numbers on the chargers - what counts is what really goes into the phone and that needs to be measured with a current meter (test equipment). What you may think to be fast might not be that.
Original HTC chargers obviously do the trick of fast charging but this comes at a price compared to the $3-$4 garden variety on Ebay and the likes.
Click to expand...
Click to collapse
Yes, it is just anecdotal evidence as I don't have any equipment to measure it. But my phone no longer discharges when I use it while charging, which it used to do with the old charger I used. So while I can say for a fact that the charger I use now is faster, I can't say by how much (this goes for both the car charger and the one I put in the wall socket).
I ordered this charger a few weeks ago and it charges my phone as fast as the original charger. The label says 5v / 1200mA.
Genuine Nokia Mini AC-10U US Type AC Charger (100~240V)
$7,25 and free shipping. (Takes a while before you get it tho.)
GazzaK said:
now I cannot help you with the electronics at all, but, my old HTC Touch Pro charger seems to charge the same as the one which came with the phone, is this correct?
Click to expand...
Click to collapse
HTC Touch Pro = mini USB
Nexus One = micro USB
Not an engineering here, but I am guessing the phone not always drawing more than 500ma may be is to do with the charger itself.
There is this "fast charge" USB standard where a wall plug has the USB data pins shorted to indicate that it is a wall plug and hence the phone knows when to draw more power. So even if the charger is rated 1A, the phone might not know if it could utilize that if those pins aren't shorted. Try doing a quick Google on this ....
If someone can test if the stock charger that came with the phone in fact does have those pins shorted that would confirm part of this theory.
For all practical purpose - I used two cables/plugs with a bench adjustable power supply. Simple micro USB plug would only let me draw 450mA regardless of power supply voltage in the range 4.5-5.5V. Tried shorting data pins - nothing. Tried shorting spare pin to VCC or GND or any of the other pins - nothing.
Used original cable and plug - draws 900mA at voltages from 4.9-5.5.
So it's in the plug somehow.
Tried (very difficult) to see if the pins on the plug are shorted and all 3 spares (except for 5V and GND) seems unconnected.
Next step is the irreversible hot knife...
I'm bugged by this, too. I tested with my desktop dock connected to my car charger (which states 1000 mA): it loads slowly and my battery widget reports USB- instead of AC-charger.
Might it be that the phone tries to load more than 1000 mA at the beginning to be sure that it doesn't overload the charger? And if that fails, it falls back to 500 mA?
Could N1 use a simple logic of:
- always watch the voltage
- start drawing 500ma (or whichever is the lowest current as per USB spec)
- increment in say 50ma steps
- if voltage drops below 4.x V, back off and stay at that level
I just did a little test of my own. I have a Palm Pre car charger (actual Palm brand one labeled as 1000ma output) and I plunged my N1 into it on my way home from work. In twenty eight minutes, my battery went from 47% to 70%. Much faster than plugging into my computer, which is 500ma max. I don't have any fancy test equipment, and don't claim to know a whole lot about electronics, but seems pretty fast to me.
I have a 4-port 2A 5v USB charger, and connecting it to my Nexus OR Milestone with a MicroUSB cable (the one that shipped with either phone, or the one from my Kindle) yields painfully slow charging - it basically won't charge if you are using the phone.
Connecting the Nexus One charger yields fast charging on either phone - so it is not HTC (or Motorola) proprietary.
The Milestone comes with a 900mA USB plug, and connecting THAT to either phone with either of the MicroUSB cables yields fast charging.
I have another aftermarket 2 port 2A 5V USB wall charger (brand: T'nB) AND I have an iPhone USB plug, and both give fast charging on the Milestone, and I have not yet tried them on the Nexus One.
Breakdown (on things I've tried):
FAST CHARGING on Nexus One AND Milestone:
Nexus charger (either in the US (110v/60hz) or in France (220v/50hz) through an adaptor)
Milestone wall French USB plug (which I think is something odd like 850mA at 5.9v) with ANY microUSB cable (in fact, it seems to charge both of the phones faster than the stock Nexus One plug)
SLOW CHARGING on Nexus One AND Milestone:
USB plug on computer
One aftermarket 4 port 2A 5V USB charger (NOT a hub, only a charger)
FAST CHARGING on Milestone, untested with Nexus One
T'nB 2 port 5v 2A USB wall charger
Apple iPhone 1 port 1A 5v USB wall adaptor
Seems found the answer for Fast Charging N1
I had just do some test for Charging N1 With Original AC Charger , Other band USB Charger and PC USB charger.
1. Orginal Charger give N1 from 0% to 100% at about 2 hour and something.
2. The other band AC charger and PC USB Charger can only finish the same job over 5 to 6 hours.
The Fast Charging is Due to 5.1V (Measured at N1) and 5.2V(Measured inside AC charger). 0.1V Drop is due to resistance of USB cable.
The Slow charged is due to 4.8V (measured at N1) and 5.0V (measured on PC USB and Other AC Charger)
i.e. Original Charger mod from 5.0 V to 5.2V (about 10% increase in Voltage)
Looks my theory is correct then ? N1 watches the voltage and if it droops too much, it backs off the current.
So the key would be: get a charger than can maintain at least 1A @ 5.2V, use
a decent gauge, short wire from the brick to N1.
Has anyone tried a Blackberry charger on the N1? Will they work to full capacity as well? (They're on Amazon for a fiver)
Because the nokia charger is working
http://pinoutsguide.com/CellularPhones-Nokia/micro_usb_connector_pinout.shtml
see info under table.
I tested also HP charger + standard USB cable delivered with Nexus, and it is charching cca 1A.
Then I tested one noname Carcharger + standard USB cable delivered with Nexus, and also charging cca 1A.
I dismantle the noname carcharger and here is a result:
data line (pin2+3) is shorted and connected do + (pin1 ,Vcc) thrue resistor cca 630kOhm.
1 - 4 = 5.1V
2,3 - 4 = 3.2V
rashid11 said:
Looks my theory is correct then ? N1 watches the voltage and if it droops too much, it backs off the current.
So the key would be: get a charger than can maintain at least 1A @ 5.2V, use
a decent gauge, short wire from the brick to N1.
Click to expand...
Click to collapse
I try to use power supply 5.2V 2A with cable without dataline (pin 2and3 not connected) and it is charging 480mA only.
I have now tested with an HTC car charger for the HD2. It's fast charging (tested with Waze running, two bluetooth connections and playing mp3 - and it's still loading the battery, whereas before it would be stuck at the current percentage) and even shows AC power instead of USB.
[Solution if you are facing USB-only charging with third-party AC chargers on your Nexus 5]
Hi Guys,
Initially, my Nexus 5 ONLY charged at USB mode with any other charger than the one supplied. I tried 5 chargers including the Trent 2.1A car charger and BB PlayBook high-speed charger. I also tries using the supplied USB cable with another charger but it was a slow-go.
Then, I noticed my buddy's N5 did not exhibit this problem.
My only solution was to reset the phone, log back in and charge with the supplied charger to 100%. Then, it magically started to show AC charging with other charges.
I wanted to share this with others in case they faced the same situation and were considering RMA due to hardware.
Kit Kat still have way too many bugs. (Settings is constantly crashing in the battery menu when I plug the charge in and out on two of our N5s.)
dextroz said:
[Solution if you are facing USB-only charging with third-party AC chargers on your Nexus 5]
Hi Guys,
Initially, my Nexus 5 ONLY charged at USB mode with any other charger than the one supplied. I tried 5 chargers including the Trent 2.1A car charger and BB PlayBook high-speed charger. I also tries using the supplied USB cable with another charger but it was a slow-go.
Then, I noticed my buddy's N5 did not exhibit this problem.
My only solution was to reset the phone, log back in and charge with the supplied charger to 100%. Then, it magically started to show AC charging with other charges.
I wanted to share this with others in case they faced the same situation and were considering RMA due to hardware.
Kit Kat still have way too many bugs. (Settings is constantly crashing in the battery menu when I plug the charge in and out on two of our N5s.)
Click to expand...
Click to collapse
Thanks, I'll try reseting my Nexus 5 when I get home. Although, I havent been able to charge it using any charger not sure if the battery life is reporting correctly too. When you first saw the issue with yours not charging using the cable and ac adapter that came with your Nexus 5 did you happen to notice if your device was still asking you to connect the charger or not? Mine is still telling me I need to connect the charger or cable, even though I have my USB plugged into the device. I can send commands to the phone fine using adb or fastboot, just wont charge.
Unfortunately your trick didn't work for me with my N5. My N5 charges off of SOME chargers (The N4, N5, N7 2012, and Samsung 2.1 Chargers, as well as my EasyACC 1200 battery pack, only port 1.3 volt, all others show as USB.) My car charger fails, Duracell 2 USB port with 2A output, and so does every other battery pack that I own fail with charging. All report USB Mode. I think it has to do with the Quickcharge 2.0 or possibly the fact that this has G2 innards to an extent. The G2 has quite a few chargers reporting as "Slow Charge" rather than "Fast Charge." Quite Irksome but I suspect it will be resolved with an update soon.
To confirm that it wasn't a hardware problem of my N5, I borrowed a Coworker's N5 and experienced the same thing on my chargers.
dextroz said:
[Solution if you are facing USB-only charging with third-party AC chargers on your Nexus 5]
Hi Guys,
Initially, my Nexus 5 ONLY charged at USB mode with any other charger than the one supplied. I tried 5 chargers including the Trent 2.1A car charger and BB PlayBook high-speed charger. I also tries using the supplied USB cable with another charger but it was a slow-go.
Then, I noticed my buddy's N5 did not exhibit this problem.
My only solution was to reset the phone, log back in and charge with the supplied charger to 100%. Then, it magically started to show AC charging with other charges.
I wanted to share this with others in case they faced the same situation and were considering RMA due to hardware.
Kit Kat still have way too many bugs. (Settings is constantly crashing in the battery menu when I plug the charge in and out on two of our N5s.)
Click to expand...
Click to collapse
dextroz said:
[Solution if you are facing USB-only charging with third-party AC chargers on your Nexus 5]
Hi Guys,
Initially, my Nexus 5 ONLY charged at USB mode with any other charger than the one supplied. I tried 5 chargers including the Trent 2.1A car charger and BB PlayBook high-speed charger. I also tries using the supplied USB cable with another charger but it was a slow-go.
Then, I noticed my buddy's N5 did not exhibit this problem.
My only solution was to reset the phone, log back in and charge with the supplied charger to 100%. Then, it magically started to show AC charging with other charges.
I wanted to share this with others in case they faced the same situation and were considering RMA due to hardware.
Kit Kat still have way too many bugs. (Settings is constantly crashing in the battery menu when I plug the charge in and out on two of our N5s.)
Click to expand...
Click to collapse
I returned my first nexus 5 to google because it did not charge unless it was with the original charger. I tried it with the USB charging port on my radio and also a sony USB cable + plug combo and the charge was terribly slow. I have a nexus 4 and 7 and they had no issues charging this way so thought it was a fault with the handset.
When I received my replacement I was really hoping this issue was resolved but sadly not. The second handset had the same issue. I then researched online and came across this forum post. I reset the handset, charged it to 100% with the cable and plug provided with the phone. Just to be on the safe side I discharged the handset fully and charged it to 100% again. The same fault reoccured. I then compared my nexus 5 to my 4 and 7. When charging the 4 and 7 through my radio, it showed charging via AC on the battery properties on the handset. The 5 in the same situation showed charging via USB. I then tried to charge my 5 using an emergency charger I had lying about and to my surprise, that charged fine showing as AC charging. I then took the USB cable from the emergency charger and plugged it into my radio's charged port. It showed AC again and charged as normal. I then used the original USB cable I always plug into the radio into the outlet of emergency charger too and that showed AC on the phone too.
I don't really have a conclusion to why this it charges fine with one power source and cable and not another as there seems to be no logic to this. I think the nexus 5 is really picky how it likes to be charged. I can't see why this phone is soo finiky charging when all my other devices charge fine regardless where and how. I am now worried that if I'm at work or out and about and need an emergency top up my handset won't charge. I really hope this is a software fix
I have had my Verizon Galaxy S4 since February of this year. I've been using the stock Samsung AC charger that came with it. It's always charged the phone pretty fast if I wasn't using the phone. It would charge about 15% in 20 minutes. Now it's only charging about 3 or 4% in 20 or 30 minutes. Now I didn't do anything different to my phone. I've been on this same ROM for over a month and this is just now a problem in the last week. My wife has the exact phone and charger that I have and when I use her charger it charges just as rapidly as mine used to, so I know it's not the usb port on my phone itself. I haven't dropped or damaged my charger at all in any way either.
Does anyone have any ideas about why this is happening?
If it charges fast on you wife's charger you've pretty much answered your own question.
Try using her cable with your charger, if it still charges slow then get a new charger.
gadget! said:
If it charges fast on you wife's charger you've pretty much answered your own question.
Try using her cable with your charger, if it still charges slow then get a new charger.
Click to expand...
Click to collapse
Ok, I'll give that a shot. Thanks.
I had the same problem too ! Did a full battery reset and everything is going good now !
You have to charge it for 12 hours and drain your battery until your phone don't boot. Charge it and here you are !
Yeah these devices act funky every blue moon. My wifes didn't even recognize ANY oem charger for a week. Only detected others as USB devices causing slow charge rate. Removing dust, component cleaner, fresh install, all did no good. Eventually it just resolved the issue itself. All chargers work normally again.
change the usb cables
I also had the same problem before. I'd been using the original charger and usb cable and noticed that charging takes a lot of time than normal.
I found that it's on the usb cable. I accidentally found it when I used gsam battery monitor. It displays the current being received by your phone when charging. Using the original usb cable, it only gets around 600mah. I tried another usb cable (from a previous Samsung device) and now my phone gets 1,900mah (closed to the charger output of 2,000 mah).
Every since I changed the usb cable, my charging is fast now. Hope this helps.
I would try a new cable and Charger that is rated 2.1 amps or better if will be charged real quick
elchingon said:
I would try a new cable and Charger that is rated 2.1 amps or better if will be charged real quick
Click to expand...
Click to collapse
I noticed that using the Pure Nexus rom my charging time became significantly faster. In fact I can get a full charge from nearly dead in just over an hour. This is using the charger and cable that came with the phone.
I had the same problem too ! Did a full battery reset and everything is going good now !
MT tenso
How do you make full battery reset?
The charging rate is based on the output rating of the charger, which is determined by the resistance value between the Data+ and Data- USB pins. If you use a cheap cable with high(er) internal cabling resistance, that will throw off the detected charger output capacity rating, and knock you down to a lower charging current and longer charging time.
Also, one time, even with the original charger and original cable, I couldn't charge at anything more than the default USB 500mA. I ended up having to power off the phone, and power it on again, which fixed the charging current and speed problem.
Install this app & check if it is getting charged at max current; anything less than 1200 mA when screen on & 1900 mA when screen off, you need to change your cable or charger
https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free
Sent from my GT-I9500 using Tapatalk
I read somewhere that if you activate airplane mode the battery is charging faster.
I just received an Aukey USB cable 2m in length from amazon after reading many positive reviews. For some reason when i plug in(Samsung Note 2 and Sony 1.5A adapter), the charging bolt comes for about 2seconds(measured 1900ma) and goes off. I keep it aside for about another 2~3mins, the charge bolt comes(for 2s) and goes off again - this goes on a loop. I tried connecting to another AC adapter(Sony 2A CP-AD2) with the Aukey cable, but experience the same issue. I tried connecting it with my brothers phone(being a Samsung Note 3), the charge bolt does show up(measuring 1800ma) but the charge level drained from 4% to 1% while using for about 5mins while plugged(like as though it wasn't plugged in).
Now comes the weirder part, i connect my Note2 with the same cable to my macbook, to my surprise the phone does charge(460ma) as well as data transfer too is possible. The charging is true this time because i didnt notice a drop in percentage. This has left me very confused on where the problem lies. Has this occurred to anyone?
ps. i have seen people on the comments say the cable works perfectly with an Aukey Charger. I dont suppose a sony charger would interfere with a third party cable
Hello,
We speak about the USB Typ C cables right? I also got the 5 cable bundle from Aukey at amazon (3x 1m, 1x 2m, 1x 0,3m). So far the cables work perfectly, I use one with an Nexus 5X charger, one with an HTC charger and one with a car charging adapter (all with the 1m cables). When I'm at home I can try to charge my phone with the 2m cable to check whether it shows the same behaviour as yours
Edit: checked also the 2m cable, phone charges normaly, did you get a bad cable?
My Poco F2 Pro charges fine (and very fast) with a USB-C to USB-C cable connected to a USB-C fast charger such as a Samsung. But if I try to charge it with a USB-A to USB-C cable connected to any charger, the phone only draws 0.5A ( I have a USB power dongle to check this ) and that's not fast enough to actually keep the phone charged when in use.
Every other phone I've tried will at least draw over an amp, even those which support fast charging.
I've tried multiple chargers, multiple cables, and nothing except C-C with fast charging will actually charge the phone.
Is this normal behaviour for the phone, or do I have a fault with mine. (It was bought second-hand with a warranty, but no charger or cable in the box).
No it's not normal, mine charges at least at QC3 speeds with various compatible chargers, powerbank and cables. Even with Huawei's fast charger, which seems not to be fully compatible, it charges about 2A (measured in accubattery).
It has a strange behavior if it's like that. What about original cable and charger, that's A to C, should charge very fast.
I had another issue regarding charging, whichever charger/cable I was using (let's say max 5V/2A), in accubattery it was measured around 3A, and the charger would overheat like crazy. You know when you want to charge slower, all what they tell you on the web is to use a less powerful charger... and this is what I did, but not with great results though. On my previous phone it was working just fine. On my wife's Mate20Pro it's also working well, but not on F2Pro. Even if the cable was rated 3A and I would connect it to the original charger, it would still draw 5A from it... Only way to solve it was AccA apk so I limit the current that the phone draws and I'm happy.
valy_cta said:
It has a strange behavior if it's like that. What about original cable and charger, that's A to C, should charge very fast.
I had another issue regarding charging, whichever charger/cable I was using (let's say max 5V/2A), in accubattery it was measured around 3A, and the charger would overheat like crazy. You know when you want to charge slower, all what they tell you on the web is to use a less powerful charger... and this is what I did, but not with great results though. On my previous phone it was working just fine. On my wife's Mate20Pro it's also working well, but not on F2Pro. Even if the cable was rated 3A and I would connect it to the original charger, it would still draw 5A from it... Only way to solve it was AccA apk so I limit the current that the phone draws and I'm happy.
Click to expand...
Click to collapse
Unfortunately I don't have the original charger and cable as it was a used phone which is otherwise in perfect working order. I've had no problems with c-c fast chargers, but nothring else works.
bilkusg said:
Unfortunately I don't have the original charger and cable as it was a used phone which is otherwise in perfect working order. I've had no problems with c-c fast chargers, but nothring else works.
Click to expand...
Click to collapse
What ROM is on the phone right now? May I suggest going completely stock with MiFlash to rule out the software part?
bilkusg said:
My Poco F2 Pro charges fine (and very fast) with a USB-C to USB-C cable connected to a USB-C fast charger such as a Samsung. But if I try to charge it with a USB-A to USB-C cable connected to any charger, the phone only draws 0.5A ( I have a USB power dongle to check this ) and that's not fast enough to actually keep the phone charged when in use.
Every other phone I've tried will at least draw over an amp, even those which support fast charging.
I've tried multiple chargers, multiple cables, and nothing except C-C with fast charging will actually charge the phone.
Is this normal behaviour for the phone, or do I have a fault with mine. (It was bought second-hand with a warranty, but no charger or cable in the box).
Click to expand...
Click to collapse
Just search and buy original charger if u want full charging speed, one guy made a great test of different chargers and different cables on this phone, check this here https://forum.xda-developers.com/t/poco-f2-pro-charging-study-how-fast-does-it-charge.4189013/
There's something wrong with his device.
0.5 A is too low for any charger.