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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.
Anyone using this charger with their Inspire4G?
I've tried using this charger with my phone, with several different cables, including the OEM cable. I can only ever get the phone to charge at the USB rate, not the AC charge rate.
Is this normal or is my charger defective?
http://scosche.com/consumer-tech/product/1921
I would assume thats because the 2.1A is ment for Ipad/Iphone/Ipod devices as they require a larger amp charge.
The 1.0A is ment for all other USB devices.
States that in the description.
Charge your iPad and an additional USB powered device at once
Use your existing USB cables to charge any additional USB powered devices
2.1 Amp USB port for charging iPad
1 Amp USB port for charging additional devices
Were are you getting AC Charge rate / USB Charge rate ?
On both ports, I'm only getting the USB charge rate.
d00mz said:
On both ports, I'm only getting the USB charge rate.
Click to expand...
Click to collapse
What do you meen USB Charge Rate..
I am going to guess ..
AC Charge Rate = Wall Charger
USB Charge Rate = Computer USB 2.0/3.0
Does car charger port provide enough amps to give full value?
metaldood said:
Does car charger port provide enough amps to give full value?
Click to expand...
Click to collapse
Yes. See below.
xKrisx said:
What do you meen USB Charge Rate..
I am going to guess ..
AC Charge Rate = Wall Charger
USB Charge Rate = Computer USB 2.0/3.0
Click to expand...
Click to collapse
when you go into Settings -> about phone -> Battery
It will show you the charging status. USB Charging typically is no more than 500ma. AC charging should be 1a.
I have an old AT&T brand car charger that charges the phone in "AC" mode.
This is were I am still getting confused.
What ROM are you running, Stock / MIUI / CM7 / or a Rom based off of stock ?
Is it 2.3.3 or 2.2.1 or 2.3.4 ?
I don't have those reading under battery status.
Anyways, I will go ahead and make the assumption that your car charger is busted and need to get it replaced.
This is were I don't get were you are stating AC Charging.
Alternating Current = AC Direct Current = DC
You cannot charge a battery " DC " with an Alternating Current " AC " period. Thats why all battery chargers reguardless of type convert AC power to DC.
Then only thing I can think of is maybe your phone can detect what type of charger it is connected to, displaying it as an AC Wall Charger or a DC Car/USB Charger.
Wall Chargers will generaly charge quicker then a computer USB Charger. Car charger typicaly charge quicker then most wall chargers.
Most Car chargers are very poor at controlling the amperage being supplied. They may stay at the right voltage but rest assured, you hit a 5v 2amp battery with a 5v 10amp charge and your going to fry it. This is the reason I dislike car chargers.
I can only see one of two problems with your Car Charger ;
1: the Car charger is bad
2: your 12 Power source port is not supplying the correct amperage that your car charger requires. IE:
I have the HTC Car dock for my inspire. It has an imput requirement of 12V 5 Amps to operate efficiently. The Power supply I have it plugged into is the 12V 20A Accesory Port in the front of my truck. It works just fine.
If your device requires say 12v 5 Amps to operate efficiently yet your car is only supplying 12v 1 Amp due to bad wiring, old fuses or bad connections your car charger will not charge at idicated levels.
The ROM is simply displaying "USB" if it is drawing 500ma charge, or "AC" if it's drawing 1000ma charge.
I'm running the 2.2.1, the LeeDroid_HD_V.2.0.0 ROM
d00mz said:
The ROM is simply displaying "USB" if it is drawing 500ma charge, or "AC" if it's drawing 1000ma charge.
I'm running the 2.2.1, the LeeDroid_HD_V.2.0.0 ROM
Click to expand...
Click to collapse
Ok, so your saying that when you have the Car Charger plugged up and your device connected, your only getting a 500ma charge. When you use your old ATT Car Charger it shows 1000ma.
500ma = .5 Amps
1000ma = 1.0 Amps
If your not getting over 500ma out of your car charger then either 1 of two things.
Car Charger is busted, get it replaced.
Car is not putting out correct Amp - Voltage for the car charge to operate correctly.
Your old car charger could have different requirements and that is the reason it works, your new one could use a deifferent set and may not work.
Regardless, its not working in your car, try it in a friends and see if it works, if not then the charger is broke, if it does, then your car is broke.
Try usiing current widget while charging.. and see the readings
Inspired from my Inspire 4G using XDA Premium App
i don't know what you are talking about here. The 2.1 Amp option is NOT the AC charging rate. It is pretty clear if you look at the stock HTC charger that comes with the phone, it says it outputs "1.5 V at 1A".
And anyways...if you look at the product description on the link you posted, it CLEARLY states the 2.1A is for charging an iPad.
buddy17 said:
i don't know what you are talking about here. The 2.1 Amp option is NOT the AC charging rate. It is pretty clear if you look at the stock HTC charger that comes with the phone, it says it outputs "1.5 V at 1A".
And anyways...if you look at the product description on the link you posted, it CLEARLY states the 2.1A is for charging an iPad.
Click to expand...
Click to collapse
I've used both ports on the reVIVE II, both the 2.1a and the 1a. Both only report the phone charging at 500ma
d00mz said:
I've used both ports on the reVIVE II, both the 2.1a and the 1a. Both only report the phone charging at 500ma
Click to expand...
Click to collapse
sorry...i thought you were referring to the AC rate as the 2.1A port, and the USB rate as the 1A port.
I was wondering if this car charger was safe to use on my Blaze (a Scosche 2 USB port charger). The info on it says:
input: 12-24vdc, 1.5a
output: 5v, 2a RoHS
(made in chine etc).
I have heard conflicting opinions about the use of third party devices for charging. Most notably, the T-mobile chat reps say they
"do not recommend" using them, but the ones on their very own website are mostly third party ones (at least they appear to be to me).
I have also heard that as long is the plug fits on the phone correctly it is safe.
Could someone clear this up for me? Will the scosch work and be safe? Or, could you recommend one that is safe to use on my blaze?
Thank you so much!
That will work perfectly fine. 5v and any amperage will be acceptable. The stock charger is good for 1A, so charging on a lower amperage charger will only increase the charging time.
I believe the Blaze will only pull around 1A max when charging, although a kernel tweak should be able to unlock fast charging in the future, if it already hasn't.
namaui said:
That will work perfectly fine. 5v and any amperage will be acceptable. The stock charger is good for 1A, so charging on a lower amperage charger will only increase the charging time.
I believe the Blaze will only pull around 1A max when charging, although a kernel tweak should be able to unlock fast charging in the future, if it already hasn't.
Click to expand...
Click to collapse
Thank you for your reply. Yes, it was the 2A output that concerned me after doing some reading. Can anyone confirm what the max amperage the Blaze will allow? I just want to be sure that 2A will not be a problem.
NOTE: It charged my old Iphone 3GS fine.
The charger does not "push" 2A to the phone, the phone draws as many amps from the charger as it can provide. The 2A rating just means that it will be able to quickly charge a device that needs that amount of power, like an iPad. Most phones will draw between 500ma (.5A) and 1A.
Uncle_Woody said:
Thank you for your reply. Yes, it was the 2A output that concerned me after doing some reading. Can anyone confirm what the max amperage the Blaze will allow? I just want to be sure that 2A will not be a problem.
NOTE: It charged my old Iphone 3GS fine.
Click to expand...
Click to collapse
its kinda like bandwidth... the charger doesnt push 2A, the charger's bottleneck is 2A. If the phone charges at 1A, only 1A will be going through the charger regardless of the charger's 2A limitation.
At least that's how i think it is... its been a long time since my Electrical Engineering portion of Intro to Industrial Maintenance in highschool....
As far as I know, if you plug in your Nexus5 (or any phone) into a power source with high amperage (>1A), your phone should utilize the amps it actually needs to charge at full speed (AC Charging).*
For example, if i plug my Nexus 5 into a 2.1A charger, it will charge just fine and draw only the required amps needed.*
Ive noticed my phone (rooted with faux) and my wifes (stock) and very finicky when it comes to the amps a charger uses. *It appears that if a charger is not exactly 1.0A or 1.2/1.3A, the phone charges as USB and not AC (no matter which USB cable I use). *Below is what I have found out, *with charge type/amp and how the phone sees it
Stock charger (1.2A) - AC
Anker 25W 5-Port Wall charger (1A Android port) - AC
Anker 25W 5-Port Wall charger (1A iPhone port) - USB (not sure why??)
Anker 25W 5-Port Wall charger (1.3A Galaxy Tab Port) - AC
Anker 25W 5-Port Wall charger (2.1A iPad ports) - USB
Anker E4 13000mah battery (2A) - USB
ANker E4 13000mah battery (1A) - AC
Anyone else experience this?
Sent from my Nexus 5 using Tapatalk
What you've observed here actually has nothing to do with the amperage of your ports and everything to do with how their data pins are wired. The N5 (and most other android devices) looks for the data +/- pins in the USB port to be shorted together, this is how it determines it's connected to a charger. Apple devices do this differently, they look for a specific combination of voltages to be present on the data +/- pins. When you connect your N5 to an Apple port, it ignores these voltages and just charges as if it were connected to a PC.
Now the fact that it sees the Galaxy Tab port as a charger is kind of interesting because the Tab uses yet another method for charger detection. It looks for resistors of a specific value connecting the data +/- pins to the power +/- pins. Cool that the N5 recognizes this configuration as well.
Anyway, this is why your Anker charger has ports dedicated to specific devices, each one is configured a little differently.
That would make sense, however, I would expect the same thing on my Nexus 4 but that doesn't happen. It charges as AC for every port
Sent from my Nexus 5 using Tapatalk
It could simply be that the N4 uses a different power control IC from the N5 (they almost certainly do). That and the software controlling the charging determine whether the phone enables AC charging from different ports or not.
I believe (I have not tried this) that some custom kernels have a setting that enables fast charging unconditionally, to draw as much current as the hardware allows.
Yeah I'm waiting for a kernel to support Fast charge, don't believe any do at the moment
Sent from my Nexus 5 using Tapatalk
the phone may revert to lower power usb charging if some condition isn't met... the phone is completely ignorant of the rated power of the wall wart. current is drawn, it depends on ohms.. so it has nothing to do with the "power output." what i mean is there is no situation where too many amps is going to trigger something in the phone, the phone controls the amps and is ignorant of the max the supply can give unless the phone actually exceeds that and detects a voltage drop, the supply can't force more amps without raising voltage to do so but that's just not how these devices work. so it's not because of the amps of the charger, it must be some other aspect.
what the phone can see is voltage. the state of the microusb "Id" pin (which will probably be open if you are using a data cable and not a specific dock to put it in desk mode or car mode, not that i think the n5 has those modes, but the Id pin is what tells the phone these things, as well as set them into download mode to flash them) and the state of the data pins. generally the data pins need to be shorted together to tell the phone to go into ac charging.
it's possible however that if the voltage is lower than 5v, the phone assumes there is voltage drop from too low a power rating on the supply and it's unable to supply the current. in this situation the phone may default to a lower current charging mode. some ac chargers may not go all the way to 5.0v they may put out as low as 4.45v... if the voltage is either low or unstable from the "high output" charger it may cause the phone to think it has exceeded the output rating of the supply when infact it's just getting unclean power. try it with an official tablet charger for a kindle or something and not a store bought anything..... some of the high output chargers just have substandard regulators and/or filtering.
there may also be more to this. usb 3.0 has a higher current rating than usb 2.0 if the phone can detect the type of port it's connected to, that may also determine the charge mode.. (in thoery anyway, no reason it can't work that way, but i can't say i know that it does on any current device)
It's getting pretty aggravating now that my Nexus 5 charges as USB when connected to my anker slim 2 1A external battery as well as my anker astro e4 1A port. No reason why it should do this
Sent from my Nexus 5 using Tapatalk
If you use a fast charging USB cable with the proper pins shorted you should get it to charge with in AC mode. I grabbed one from Amazon and it changed from DC to AC on the same charger.
jalanjkcarp said:
If you use a fast charging USB cable with the proper pins shorted you should get it to charge with in AC mode. I grabbed one from Amazon and it changed from DC to AC on the same charger.
Click to expand...
Click to collapse
Oh thanks for that tip. I'll order one on Amazon right now and update this thread
Sent from my Nexus 5 using Tapatalk
What happens if you connect an Apple device to one with the shorted pins?
Earth explodes
Sent from my Nexus 5 using Tapatalk
jalanjkcarp said:
If you use a fast charging USB cable with the proper pins shorted you should get it to charge with in AC mode. I grabbed one from Amazon and it changed from DC to AC on the same charger.
Click to expand...
Click to collapse
Tested the new USB cord on all ports, charges as AC. Thanks a lot
Sent from my Nexus 5 using Tapatalk
I was a Note 7 refugee so I have the stock Samsung fast AC charger here. Model EP-TA20JWE rated at 9v @ 1.67A and 5v @ 2A. It's in my kitchen.
I have the original AC charger that came with the Pixel XL. Model TC G1000-US rated at 9v @ 2.0A and 5v @ 0.5A I have only used once to get this information.
I also have a mobile charger in my car. It is labeled as Qualcomm QC 3.0 certified which is why I bought it as the Note 7 was a QC 3.0 device. It is a Choetech Model C0051 rated at 9.1v~12v @ 1.5A Max, 5.6v~9v @ 2A Max, and 3.6v~5.5v @ 2.4A Max (the iFixit teardown has revealed a Qualcomm QC 3.0 IC in the Pixel)
Additionally I have a charger by the bed which is from my Nexus 6, Motorola "Turbo Charger" Model SSW-2680US rated at 5v @ 1.6A, 9v @ 1.6A, and 12v @ 1.2A.
All of the chargers are using their original CABLE (USBA to USBC except in the case of the Pixel which is USBC to USBC) included EXCEPT the Motorola Turbo Charger, which is using a 6 foot long braided USBA to Micro USB cable with the Micro USB to USBC adapter that came with the Note 7.
What I found so far was all three work well and all three are recognized by the phone as a rapid charger.
I also found that at 60% charge and plugging in each one long enough for the lock screen to give me the "rapid charging XX minutes until full" message, the Samsung EP-TA20JWE fast charger charges it faster than the Google TC G1000US or the Choetech C0051. The Google and Choetech appear to charge at the same rate based on time until full. The Motorola Turbo Charger charges at an extremely fast rate, like it took it from 58% to 77% in maybe 5-10 minutes and was saying 15 minutes to full at 77%.
My battery life is phenomenal for me at 5-6 hours SOT, I have no issues with any of these chargers, they all see charging time every day. Turbo charger overnight, Samsung Note 7 charger when in the kitchen where I am a lot, mobile charger when driving to work or classes... (except the actual Pixel charger which I haven't found a use for yet but will probably go to work with me.
*Based on my findings I am going to put the Samsung Note 7 charger in the kitchen and the slowest Pixel charger in the bedroom and take the fastest Turbo charger to work.
Sent from my Pixel XL using Tapatalk
I know my test method isn't to some people's satisfaction but the time to full calculation is based on how much the phone is charged now (which I kept within +/- 2% for each check) and how much current the device wants to draw from what's available. What's interesting is the device draws power much quicker than the Pixel charger supplies it when it is plugged into more capable chargers.
Sent from my Pixel XL using Tapatalk
Good information. It's nice to knows that all the accessories I got for my note won't go to waste lol.
Thank you.
Sent from my SM-G935V using XDA-Developers mobile app
I have been having varying experiences.
My Anker QC 3.0 type C wall charger seems to charge rapidly, although at the 5V/3A only, with a 6.6ft USB 2.0 i-orange cable. Using a 3.3ft USB 3.0 cable, it shows charging rapidly when I first plug it in, but a few minutes later only shows charging.. but seems to be charging rapidly? My Tronsmart type C w/ QC 3.0 car charger, using an Anker Powerline+ type C cable, shows charging rapidly, but said it had 1+ hour until full when at 70%... Ampere only showed 1.6A being sent to the phone too. I tried an iVoler charger with type C and QC 3.0 and got up to 2050mAh, but it was likely only 5V (which I would expect) but still didn't seem to be charging all that fast.
I think this whole USB-PD thing is going to really be dependent on proper chargers and cables. All of these chargers/cables worked perfect on my Nexus 6P - doesn't seem to be the case on the Pixel.
Thanks for the experience folks. I had purchased a qc 3.0 tronsmart on sale at amazon which I was going to return. I got usb c cables with pd from monoprice. I suppose even if it doesn't fast charge at 18w (9v X 2a), I'd be ok with 15 w charging if I don't have to go out and buy a new car charger.
I mean faster is nice but if it still charges at a good rate, the lower current might help the battery last longer too right?
testinguser said:
Thanks for the experience folks. I had purchased a qc 3.0 tronsmart on sale at amazon which I was going to return. I got usb c cables with pd from monoprice. I suppose even if it doesn't fast charge at 18w (9v X 2a), I'd be ok with 15 w charging if I don't have to go out and buy a new car charger.
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I have bad news for you. I have a Tronsmart QC 3.0 type C charger too - one from a year ago though, don't know if the design has changed - and it is NOT rapid charging my device. It worked perfect on my Nexus 6P. It will start out by saying "charging rapidly" on the Pixel XL, but after several minutes, goes down to "charging" and the charge time is 2+ hours, Ampere shows really low current, etc. It COULD be the Anker Powerline+ type C cable I am using... but I highly doubt it. I think the fact that the type C port has QC 3.0 is not playing nice with the USB-PD chip, and causing it to drop support for 5V/3A all together. I will test this more tonight with the stock cable and see if it works any better.
Did some testing: http://forum.xda-developers.com/showpost.php?p=69309771&postcount=30
Man I totally forgot about my Motorola Turbo chargers I got from Groupon. I wish I could find my @zerolemon charger too.. Ill test them with my USB USB Doctor dongles.. When I find them... lol
psa; cables make a huge difference in my experience.
I also have a tronsmart qc2 1 + 3 fast port car charger Ill test and post results.
Perhaps not the right thread but I have just been sent these USB-C cables to review for free.
https://www.amazon.co.uk/gp/aw/d/B01EEACOVO/ref=ya_aw_od_pi?ie=UTF8&psc=1
Amazon says they are rated to 2.4A but will they damage by Pixel XL? I'm not expecting them to charge 'rapidly' but would be handy to be able to use them with an older 2A charger.
Do you think they are safe?
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Why do so many people try to get a charger with as high a wattage rating as possible but ignore the fact that USB-C is limited to 3A and all you need to do is find a charger capable of delivering 3A.
What does wattage have to do with things?
Not trying to be a jerk, I'm just assuming I must be missing something here.
CZ Eddie said:
Why do so many people try to get a charger with as high a wattage rating as possible but ignore the fact that USB-C is limited to 3A and all you need to do is find a charger capable of delivering 3A.
What does wattage have to do with things?
Not trying to be a jerk, I'm just assuming I must be missing something here.
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Because more watts = more power. USB-C may be limited to 3A, but it is not limited to 5V. Higher volts at the same amperage = more wattage = more power. If you want the fastest charging possible, you need a 9V/2A+ USB-PD charger.
Nitemare3219 said:
it is not limited to 5V.
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I didn't realize it was OK to go with higher than 5v now.
Do you know if it's okay to hard wire directly into a 12V system for charging? Like in the car? I'm guessing "no it's not okay" but I'm still learning about USB-C.
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tap = hard wire/splice into. As in, no adapter. Just a USB-C at one end and then snip the connector off the other end and use the two power wires and two ground wires to splice directly into say, the back of a cigarette charger's 12V wiring.
CZ Eddie said:
I didn't realize it was OK to go with higher than 5v now.
Do you know if it's okay to hard wire directly into a 12V system for charging? Like in the car? I'm guessing "no it's not okay" but I'm still learning about USB-C.
---------- Post added at 09:27 AM ---------- Previous post was at 09:25 AM ----------
tap = hard wire/splice into. As in, no adapter. Just a USB-C at one end and then snip the connector off the other end and use the two power wires and two ground wires to splice directly into say, the back of a cigarette charger's 12V wiring.
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There is no way that would work, nor would it be safe. There HAS to be an adapter to safely charge the phone by regulating voltage and current, as well as shutting off the charge once it hits 100%.
Nitemare3219 said:
There is no way that would work, nor would it be safe. There HAS to be an adapter to safely charge the phone by regulating voltage and current, as well as shutting off the charge once it hits 100%.
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It's my understanding that some/all of the regulating is done on-board some phones.
I know I never had any issues with my 3A 12v to 5v converter hard wired to S4 and Note 3 phones for charging in either my car or Motorcycle.
At least, I didn't notice any issues.
CZ Eddie said:
It's my understanding that some/all of the regulating is done on-board some phones.
I know I never had any issues with my 3A 12v to 5v converter hard wired to S4 and Note 3 phones for charging in either my car or Motorcycle.
At least, I didn't notice any issues.
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Well you're a brave soul. I wouldn't ever think to try something like that. Especially not with USB-C & Power Delivery now. The phone is responsible for some of the charging regulation, but the charger itself is just as important.
CZ Eddie said:
Why do so many people try to get a charger with as high a wattage rating as possible but ignore the fact that USB-C is limited to 3A and all you need to do is find a charger capable of delivering 3A.
What does wattage have to do with things?
Not trying to be a jerk, I'm just assuming I must be missing something here.
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Because with USB PD the Pixel can charge at 18W by using 2A by 9V. So just looking for a 3A charger doesn't give you the fastest possible charging for the Pixel. Using a standard 3A charger will charge it at 3A by 5V for 15W. You multiply the voltage and amperage to determine wattage.
Sent from my Pixel XL using Tapatalk
I have an aukey car charger and my pixel phone rapid charges when I use the QC 3.0 port, but not the USB c port.
Anyone try the other Motorola turbo chargers 15, 25, 30? Id be curious to know if they work any better. They say the phone must support "turbo"..
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CZ Eddie said:
I didn't realize it was OK to go with higher than 5v now.
Do you know if it's okay to hard wire directly into a 12V system for charging? Like in the car? I'm guessing "no it's not okay" but I'm still learning about USB-C.
---------- Post added at 09:27 AM ---------- Previous post was at 09:25 AM ----------
tap = hard wire/splice into. As in, no adapter. Just a USB-C at one end and then snip the connector off the other end and use the two power wires and two ground wires to splice directly into say, the back of a cigarette charger's 12V wiring.
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No definitely not. Car Battery supplies too much wattage/amerpage and its missing the PD ic and other protections in most good charger (over volt, under volt, circuit protection, trickle, power cut off, ect). Thats why all this talk about chargers and cables that do not meet requirements burning equipment/phones up.
It will never know when to stop charging or if over charging and catch fire...
Thats why its not advisable to buy cheap no name unbranded batteries, cables and chargers.
Usb c isnt just a connector/ plug theres an ic (computer chip) in control as well on both sides.
The chip in your battery talks w the one in the phone that talks w the one in the charger..