Question is related to voltage and amper: original touch cruise's adaptor is marked as "output: 5V 1A LPS"
I have another one that I bought for my ex HTC Kaiser; this adaptor is marked as "output: 5.5V 500mA"
Can I use the second one for touch cruise? Is there a general rule when it comes to such electracal small differences?
Thank you.
the amps never matter they are pulled not pushed
the volts can cause issues as usb is 5volts and
not 5.5volts so by following the std a device could still
be toast if provides with 5.5volt but i doubt it though
No reason to doubt that.
In fact I saw some cellphones with USB-Charging capabilities, which didn't work after charging with a little more than 5 Volts.
Seems to be different from phone to phone if >5V does damage or not.
I would refrain from feeding 5V device with a 5.5V power source, especially considering this 5.5V is probably going straight into to the VBus line of the USB client hardware, not just into charging circuits.
Also, saying that "the amps never matter they are pulled not pushed" is WRONG. Indeed, the device "pulls" the current from the power supply, but if it attempts to pull more than the power supply can provide, you may end up frying the power supply, and i mean, frying it literally, like in "overheating and melting it up".
BTW, sorry about such a nasty first post, but i really don't like the though of someone possibly frying a device because of a forum post.
I just measured the output of my OEM charger, it was 5.24V so a bit more than the standard 5V. Would this be a problem?
I always thought that the current from USB chargers was seldom exactly 5V anyway.
satfly said:
I just measured the output of my OEM charger, it was 5.24V so a bit more than the standard 5V. Would this be a problem?
I always thought that the current from USB chargers was seldom exactly 5V anyway.
Click to expand...
Click to collapse
Don't panic, you are in the good range:
"The specification provides for no more than 5.25 V and no less than 4.75 V (5 V±5%) between the positive and negative bus power lines"
(http://en.wikipedia.org/wiki/USB)
And i presume that you 've made the measurement without any device connected to the power supply ?
Hi guys,
since the charger of the iPhone has an USB connector, my question is if I can use that charger for the Nexus One too??
Since it supplies actually the same energy level (both can get energy from a PC USB instead), does this mean that also the charger delivers current with good specifications for the N1?
thanx in advance
exelero
How are you going to plug the iPhone 30 pin in to a micro USB? Maybe I'm not understanding you correctly.
to plug the microUSB-to-USB cable of the Nexus One into the USB socket of the iPhone charger.
moto1907 said:
How are you going to plug the iPhone 30 pin in to a micro USB? Maybe I'm not understanding you correctly.
Click to expand...
Click to collapse
I think (s)he means the mains adapter part with the USB socket in it - in which case yes it will work, you just need the right cable - which came with your N1
Looking forward to when all manufacturers standardised on micro usb, for a while I thought that mini usb was micro, so I was surprised to see that the n1 was different then I found out....
ok, now i see. Not enough coffee yet,lol
scote said:
in which case yes it will work
Click to expand...
Click to collapse
yeah, from the connection part, I know it will work. my question was more related if the iPhone charger delivers the appropriate current (tension/amperage) conditions for the N1 and, let's say, it won't burn the N1 due to a too high voltage, or mess up the battery due to an incorrect tension input.
I was just having a conversation on chargers with a friend of mine the other day and googled around on the subject on amperage/current/Ma of chargers..
I stumbled upon these posts (either here on XDA, Androidforums or other forums):
1. "The current rating on a voltage source is the maximum amount that the power
source can deliver without exceeding its saftey rating.
What this means is that if you are using some device that has a power supply
with a current rating of 500mA then its best not to use a different power
supply(at the same votlage rating) with a lower max current rating. i.e.,
anything < 500mA. Now ofcourse you might be able to get away with it but if
it burns down your house then its your fault.
A device will only pull the amount of current that it uses(assuming it is a
voltage controlled device) and this is true regardless of the current
rating(hence the saftey issues I discussed above). If a device
says(sometimes they don't) it uses 500mA then it uses 500mA. Maybe it
doesn't use 500mA all the time but the engineers have put that rating there
for a reason. Using any power supply with the right voltage and a current
rating of anything more than what the device uses is ok because the device
will only pull the current it uses.
Now, about the voltage rating: The voltage rating does not have to be exact
and different devices can tolerate different voltage ratings. The problem
usually is one of current. By increasing the voltage, say, you increase the
current the device uses and then you have changed the parameters that the
device was created with."
2. "And as far plugging your phone into a charger that outputs well over 850mA, don't worry about that either. Unlike voltage, the more amperage the merrier because the device will only take what it needs of the available resources."
3. "Moral of the story. Match the Voltage (5.1Volts) Meet or Exceed the 850mA rating. (which is .850 Amps) and you'll be fine."
4. "amps are not pushed but drawn
amps is the max the charger can provide
before it get pressured and lover the volts
you could use a 5volt 10000MegaAmp charger
and the device would only draw the amps the device
was made to draw all the rest of the amps would stay
at your electricity company
ohms law state Amps == volts / residence"
5. "amps are not pushed but drawn
ohms law state Amps == volts / residence
In other English:
P = VI, where
P = Power of device (watts) and is fixed
V = Voltage used by device (volts) and is fixed
I = Current (amps) and is decided by P/V (a fixed ratio)
So the device cannot draw more current than the fixed ratio. It may draw less current if the charger cannot supply the highest amount, but then as in one of the above posts, it simply takes longer to recharge.
With these devices, milliWatts/miliAmps are the scale, 5V is generally the fixed Potential Difference.
Used in a vehicle, the device is generally both drawing and expending energy (ie. charging and running say, GPS) simultaneously. This in/out situation when prolonged is the cause of the observed overheating with the original X1 battery."
Click to expand...
Click to collapse
Bottom line... Make sure the voltage is 5V, the amperage doesn't really matter.
thanx for your feedback.
both chargers have the same output (5V, 1A) - so I am already successfully using it.
blackberry storm also has micro-usb
hello two chargers and an extra usb-cable
To answer the OP's question...
yes it works fine. I have one in my car and charge my ipod and nexus at the same time without issue. The advanced zune car adapter also works (in case one of the 5 who own a zune are reading this ).
I have been using my old Iphone white plug -> USB adapter for almost a month now and I haven't had any issues.
I tried using the iPhone charger but it charges slow...it does not quick charge. Am I doing something wrong?
uhohhotdog said:
I tried using the iPhone charger but it charges slow...it does not quick charge. Am I doing something wrong?
Click to expand...
Click to collapse
no. If i'm up to date, and i think i am, you'll only get the 'fast charge' if you use the charger that came with your phone. the usb to usb micro chargers all charge slow
Can i use X10 mini charger (5v DC 850mA output) on nexus one by the things i read i understand that i can't but my english is not very good. Thanks
if youre talking about using the iphone usb cable on your n1, HAHAAHHAAHAHAHAH
if you mean using the usb-to-AC adaptor then yea you can use any usb cable to charge anything pretty much..
Hi Guys,
Saw this 2A car charger for HTC Desire, thought I'll post it here and ask everyone if this will work well with HTC Desire. I dont want to damage my new Desire by buying something that kills it.
http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=300435508442&_trksid=p2759.l1259
Let me know your comments.
Cheers!!
Amps are not pushed to the phone from the power source,
They are pulled by the phone, from the power source.
Therefore the phone will only request what it needs, IE you cant overload it.
Voltage on the other hand will!
So to answer your question,
it will be ok.
Fon22
Fon22 said:
Amps are not pushed to the phone from the power source,
They are pulled by the phone, from the power source.
Therefore the phone will only request what it needs, IE you cant overload it.
Voltage on the other hand will!
So to answer your question,
it will be ok.
Fon22
Click to expand...
Click to collapse
Thanks Fon22. pardon my lack of knowledge , so what diff will a 700ma or 1000ma will have against 2A car charger ?? Any benefits ? or its better to buy a cheapo 2$ 700ma charger ?
WEll, it's best to get the charger that can deliver the most Amps. So if the phone needs it because you're using GPS and music and what have you - then the amps will be available instead of the phone consumes more battery than it gets from the charger.
So get the one with the biggest Amp spec - but still 12 volts
Thanks guys.
And If I am not wrong , It should work with HTC Desire as well (it is being advertised as being Touch HD)..
Cheers!
Smirge said:
So get the one with the biggest Amp spec - but still 12 volts
Click to expand...
Click to collapse
I know you're referring to the source (input) voltage, but just incase it confuses someone, you want the OUTPUT voltage of the charger to be 5V. Output voltage of 12V would almost certainly do damage as the stock charger and USB spec are at 5V +/- nominal tolerances.
Amps though, yes. Preferable to have something which can deliver at least 1A.
That is correct - the INPUT is 12V as per the car battery, but the OUTPUT should be no more than 5V - thank's for clearing that up
1A is enough.
It's another important thing to this.
I tried to explain the issue here:
http://forum.xda-developers.com/showpost.php?p=6863243&postcount=24
I hope my english is ok.
Edit:
Same info here: http://forum.xda-developers.com/showpost.php?p=6443313&postcount=18
Im looking to put a couple usb ports in my car, ive found these on ebay and the price seems right.
http://www.ebay.com.au/itm/Car-Led-...Electrical_Test_Equipment&hash=item33772bf4ec
Most other chargers ive seen are either 1.1a or 2.1a, will going up to 3a cause any damage to the device or battery?
A device will only draw as much current as it needs. Current is measured in Amperes, abbreviated A. So if you plug a device that needs 1A into a charger capable of delivering 3A, it will only draw 1A.
Problems occur when you do the opposite, like plug a device that draws 2A (a tablet) into a charger that can only supply 0.5A (500mA, an old phone charger). Then the device won't be able to charge at full rate, or maybe not at all.
As with anything sold on eBay, be wary of claims for chargers. They may not actually deliver the advertised current.
ron917 said:
A device will only draw as much current as it needs. Current is measured in Amperes, abbreviated A. So if you plug a device that needs 1A into a charger capable of delivering 3A, it will only draw 1A.
Problems occur when you do the opposite, like plug a device that draws 2A (a tablet) into a charger that can only supply 0.5A (500mA, an old phone charger). Then the device won't be able to charge at full rate, or maybe not at all.
As with anything sold on eBay, be wary of claims for chargers. They may not actually deliver the advertised current.
Click to expand...
Click to collapse
Thanks for the reply, yeah i hate ebay claims when it comes to stuff mainly from china, batterys, memory cards etc.
Hopefully it works well, even if it's only 1/3 of the claimed output ill be happy for the price.
Benson Leung is doing a great service by identifying to users whether various Legacy to Type C adapters and cables use the appropriate pullup resistor. Unfortunately, most people have misread his statements and even worse, drawn erroneous conclusions. Benson Leung Amazon Profile (Reviews)
What the Leung Reviews Actually Tell Us:
Whether the reviewed product uses the correct pullup resistor base on Type C specifications or not.
For whatever reason, the Google Chromebook Pixel (2015) will not charge with a cable that has the wrong pullup resistor.
The Google Chromebook Pixel (2015) might attempt to draw 3A at startup and depending on the port it is drawing from, it might burn the attached port.
What They Tell Us w/ Respect to the Nexus 6p:
Absolutely nothing
While we can infer that the Nexus 6P will believe that the attached facing port can deliver up to 3A, the review gives us no indication about how the attached devices (6P on the C end or the port device on the legacy) will react. We know the 6P behaves better with these cables than the Pixel. Link for a post and video link for getting 3A from an Anker Type A charger.
How to use this information:
If you desire a cable or adapter that adheres to the Type c specification, buy the ones Mr. Leung reviews favorably and avoid the ones he reviews unfavorably.
If you desire the possibility of getting more than 2.4A from a legacy charger, buy the cables that Mr. Leung tells you have the wrong pullup resistor. This includes having a single charger to charge your Nexus 6P and other phones and devices that need less than 3A all with Type A cables. It has been confirmed that you can get 3A safely to the 6P using these cables with Type A chargers. We hope manufactures will provide 5V/3A capacity, if not rated, chargers.
Recommendations for using these “Out of Spec” devices:
Mark them. While it is ignorant to shun these cables because you don’t understand the potential benefits they can provide, it is also ignorant to use them unknowingly. Also, if you have an issue, it makes it easier to determine if the cable is the problem.
Test your specific devices with the cables before deploying them for use.
Is it Safe to use these Cables to get 3A from a Charger through a legacy port charger?
First, a charger has a rated capacity, say 2.4A and a higher actual capacity. What that means is that the manufacturer certifies the device to supply enough power for a device that needs no more than 2.4A Because of sample to sample variation, the device must be designed to supply more than 2.4A so that those at the bottom of the sample will still meet that 2.4A requirement. For example, my device might need to be designed to output 2.7A so that I have a 99% confidence that any single randomly selected charger will be able to produce 2.4A. Hence, a device rated at 2.4A, outputting more than that is not unsafe. It is normal and expected It is only unsafe when the device exceeds it actual capacity leading to thermal shutdown.
A USB charger does not blithely output full rated current continuously. It is also important to understand that the attached device (the sink) controls the draw. This is why you can safely use the same charger to charge a 900mA device, a 1.5A device and 3A device. Battery charger does not require a full power!! The 6P will draw up to 3A, but does not require 3A
We know that these cables advertise 3A to the Type C port. That is, the device believes can draw up to 3A. The Nexus 6P seems to behave well when 3A is unavailable. It appears to work as it is supposed to by monitoring vRd on the buss and moderates it’s current draw to maintain the reference voltage. This is how it precludes overdriving a charger without the charger having to trip it’s own over current protection.
I have little need to connect my 6P to my computer and so I don’t use these cables connected to computer USB ports. I have the cable in my car and the 2 adapters in our other vehicles where I know there is a Type A to Micro B cable always available. Since the only at risk component is the $10 charger, if I ever have an issue, I really don’t care. However, to date, these have worked fine everywhere I’ve tried them.
Thanks! Very informative. I was wondering how his reviews affect usage with the Nexus 6P, and was starting to sway towards waiting for a spec-compliant adapter to come out. But now I think I'll just go for it...
Hi there!
Thanks for making this thread! This has been a hotly debated topic in numerous other threads, and has probably deserved it's own for quite a while now. I don't think it is a secret that @dwswager and I have had a slight disagreement from time to time concerning this. I'm not here to flame or derail the post, but hopefully provide a different perspective in hopes of furthering the discussion and understanding.
dwswager said:
How to use this information:
If you desire a cable or adapter that adheres to the Type c specification, buy the ones Mr. Leung reviews favorably and avoid the ones he reviews unfavorably.
If you desire the possibility of getting more than 2.4A from a legacy charger, buy the cables that Mr. Leung tells you have the wrong pullup resistor. This includes having a single charger to charge your Nexus 6P and other phones and devices that need less than 3A all with Type A cables. It has been confirmed that you can get 3A safely to the 6P using these cables with Type A chargers. We hope manufactures will provide 5V/3A capacity, if not rated, chargers.
Click to expand...
Click to collapse
This is great advice. If you don't want to take the risk, please buy in-spec cables. Intentionally using the out of specification cables is akin to hacking and tweaking an OS. I'm not against doing so - we wouldn't have custom roms without it - but, you should know the risks and be willing to accept them. With that said, it is my belief that current non-compliant cables should be removed from the market altogether. Unless the product is correctly labeled as such and specifically sold and marketed as non-compliant hardware, consumers don't really know what they are buying. Allowing manufacturers to sell these USB cables, and having users believe they are within specifications when they aren't, shouldn't be allowed.
Regardless, I would consider intentionally using out of spec cables in an attempt to gain further charging benefits to be "charging hacking". The goal, as stated, is to push the hardware beyond it's rated capabilities and/or to exceed documented specifications. As long as you know that is what you are trying to do, go for it! It's like flashing a rom to your phone - If you brick your charger, void your warranty, or get your charger stuck in a boot loop, it's your own fault. hehehe.
dwswager said:
Is it Safe to use these Cables to get 3A from a Charger through a legacy port charger?
First, a charger has a rated capacity, say 2.4A and a higher actual capacity. What that means is that the manufacturer certifies the device to supply enough power for a device that needs no more than 2.4A Because of sample to sample variation, the device must be designed to supply more than 2.4A so that those at the bottom of the sample will still meet that 2.4A requirement. For example, my device might need to be designed to output 2.7A so that I have a 99% confidence that any single randomly selected charger will be able to produce 2.4A. Hence, a device rated at 2.4A, outputting more than that is not unsafe. It is normal and expected It is only unsafe when the device exceeds it actual capacity leading to thermal shutdown.
Click to expand...
Click to collapse
This is an area I would be concerned about. As there is no way to know how much over the charger's rating you can safely go, I would advise caution. Also, it is entirely possible that the "higher actual capacity" is a safety buffer the manufacturer didn't intend for daily use.
dwswager said:
A USB charger doesn't blithely output full rated current continuously. It is also important to understand that the attached device (the sink) controls the draw. This is why you can safely use the same charger to charge a 900mA device, a 1.5A device and 3A device. Battery charger does not require a full power!! The 6P will draw up to 3A, but does not require 3A
We know that these cables advertise 3A to the Type C port. That is, the device believes can draw up to 3A. The Nexus 6P seems to behave well when 3A is unavailable. It appears to work as it is supposed to by monitoring vRd on the buss and moderates it’s current draw to maintain the reference voltage. This is how it precludes overdriving a charger without the charger having to trip it’s own over current protection.
Click to expand...
Click to collapse
I'm not entirely sure how proven this is as there are some examples online demonstrating the 6P pulling about 50% more current from an Anker charger than it is rated to provide. Again, I would advise caution.
dwswager said:
I have little need to connect my 6P to my computer and so I don’t use these cables connected to computer USB ports. I have the cable in my car and the 2 adapters in our other vehicles where I know there is a Type A to Micro B cable always available. Since the only at risk component is the $10 charger, if I ever have an issue, I really don’t care. However, to date, these have worked fine everywhere I’ve tried them.
Click to expand...
Click to collapse
Yes, probably best not to do this on an expensive laptop or PC. :good:
quitlee said:
Thanks! Very informative. I was wondering how his reviews affect usage with the Nexus 6P, and was starting to sway towards waiting for a spec-compliant adapter to come out. But now I think I'll just go for it...
Click to expand...
Click to collapse
if it is just a cheap car adapter that is one thing, but i would not want any cables like that near a computer. even if i know better than to plug it in i still may or someone else may.
What They Tell Us w/ Respect to the Nexus 6p: Absolutely nothing
Click to expand...
Click to collapse
Do NOT buy this #USB #TypeC to Type-A cable from +OnePlus.
It is not spec compliant (uses a 3A identifier resistor instead of the "Default USB Power" one), and may cause damage to your charger, hub, or PC USB port if you use it with #ChromebookPixel or #nexus6p #Nexus5x .
Click to expand...
Click to collapse
https://plus.google.com/+BensonLeung/posts/JmcU4rA1csh
zeitgeb3r said:
What They Tell Us w/ Respect to the Nexus 6p: Absolutely nothing
Do NOT buy this #USB #TypeC to Type-A cable from +OnePlus.
It is not spec compliant (uses a 3A identifier resistor instead of the "Default USB Power" one), and may cause damage to your charger, hub, or PC USB port if you use it with #ChromebookPixel or #nexus6p #Nexus5x .
https://plus.google.com/+BensonLeung/posts/JmcU4rA1csh
Click to expand...
Click to collapse
I've used one many times and it hasn't fried my charger or phone.
Regardless, I would consider intentionally using out of spec cables in an attempt to gain further charging benefits to be "charging hacking". The goal, as stated, is to push the hardware beyond it's rated capabilities and/or to exceed documented specifications. As long as you know that is what you are trying to do, go for it! It's like flashing a rom to your phone - If you brick your charger, void your warranty, or get your charger stuck in a boot loop, it's your own fault. hehehe.
Click to expand...
Click to collapse
While I agree with this, I'm a lot more worried about someone who unknowingly or unintentionally (or stupidly) starts using those cables all over the places because "Damn it, Martha, that there cable worked just fine in the past", and plugs into a variety of ports not designed for the current, such as, but not limited to: notebook USB ports, PC USB ports, portable lion battery ports, airport charger ports, airline seat ports, the USB port in your Mom's car, your buddy's $1 USB charger that he got at WalMart and what have you. Yeah, it'll mostly work, but when it doesn't.... You could also replace all the 20A fuses in your house with 40A fuses and that would mostly work. Until it doesn't.
I just don't see the point. Buying spec compliant cables is no big deal. Buying a C->C fast charger is no big deal. What's the upside here? Save a few bucks? If that?
DebauchedSloth said:
Regardless, I would consider intentionally using out of spec cables in an attempt to gain further charging benefits to be "charging hacking". The goal, as stated, is to push the hardware beyond it's rated capabilities and/or to exceed documented specifications. As long as you know that is what you are trying to do, go for it! It's like flashing a rom to your phone - If you brick your charger, void your warranty, or get your charger stuck in a boot loop, it's your own fault. hehehe.
While I agree with this, I'm a lot more worried about someone who unknowingly or unintentionally (or stupidly) starts using those cables all over the places because "Damn it, Martha, that there cable worked just fine in the past", and plugs into a variety of ports not designed for the current, such as, but not limited to: notebook USB ports, PC USB ports, portable lion battery ports, airport charger ports, airline seat ports, the USB port in your Mom's car, your buddy's $1 USB charger that he got at WalMart and what have you. Yeah, it'll mostly work, but when it doesn't.... You could also replace all the 20A fuses in your house with 40A fuses and that would mostly work. Until it doesn't.
I just don't see the point. Buying spec compliant cables is no big deal. Buying a C->C fast charger is no big deal. What's the upside here? Save a few bucks? If that?
Click to expand...
Click to collapse
No the upside is that inspec cables are harder to come by than out of spec ones. I bought the OP ones before we knew if they were in spec. I have the iorange one which is in spec as well but i don't want to waste the money i spent on the OP cables since i have 4 plus their adapter. I have Nexus Protect so i don't care if my phone magically dies since that's why i bought an extended warranty for it. I also own the Google 22.5W charger and i will gladly get more C-C cables but that doesn't help my charge my phone in the car
I have been using my old quick charge wall adapters with OnePlus cables for over a month now and I haven't had a single issue. They all charge at their rated rate, or under (my moto turbo charger tops out at 1300mah even though it can go much higher). Ive asked Benson already: what about the wall adapters? No reply. Oh, and USB Type C wall adapters are even harder to find then these cables, and who knows if those are "in spec." I already spent nearly $40 in OnePlus cables, im not about to buy $50 more in "in spec cables" to then find out that some google guy is now saying "dont use xxx wall adapters." I think if this really was a FIRE risk, google itself would be issuing a statement not just some guy who works there at some capacity. As far as i know, the device will be fine, and with my 1 year warranty i doubt anyone is going to run into a DEVICE issue. I think this is blowing up way out of proportion. My Samsung non fast charging wall adapter chargers at a max of 2.1a, and its rated for 2a. That 100 isnt going to do squat and i wouldnt be surprised if that was within the power rating anyway. My quick charge 2.0 aukey chargers also charge at that speed with the oneplus cables. Again, no issue. I think at this point ill risk the potential of damaging a $5 wall adapter due to a cable being "out of spec" than spending $12-19 a cable (times 5 as id want 2 in my cars and 3 at home) and then worrying about the wall adapters going with it possibly spending even more to replace those. Oh, and then you have to worry about the in car charging on top of those. I get what he's saying, and I don't disbelieve him, I just don't think its as big of an issue as people are making this out to be. Ill update my opinion if something happens, but im doubting it.
Don't buy these cables. Period.
See this report on Reddit: https://www.reddit.com/r/Nexus/comments/3rjiol/my_nexus_5x_fried_two_car_chargers_help_please/
Worst case: burn your house, die.
I have Nexus Protect so i don't care if my phone magically dies
Click to expand...
Click to collapse
FWIW, it won't be your phone that dies, as far as I know. Worse case, whatever you plug it it into will die, potentially in a very bad way.
Just doesn't seem worth it.
Pilz said:
I've used one many times and it hasn't fried my charger or phone.
Click to expand...
Click to collapse
Murphy's Law.
All high-quality, brand name chargers feature overcurrent protection of some sort. All of them. You can stick a paper clip in them and totally short them out with no ill effect. If a charger emitted magic smoke under load it was a defective unit. They are by design "constant voltage, constant current" chargers, meaning they endeavor to supply a constant voltage until they hit their current maximum, at which point they become constant current and allow the voltage to drop to maintain the current constant.
For those who are curious about the exact behavior of various chargers under load, read all about it here:
http://www.righto.com/2012/10/a-dozen-usb-chargers-in-lab-apple-is.html
ackattacker said:
All high-quality, brand name chargers feature overcurrent protection of some sort. All of them. You can stick a paper clip in them and totally short them out with no ill effect. If a charger emitted magic smoke under load it was a defective unit. They are by design "constant voltage, constant current" chargers, meaning they endeavor to supply a constant voltage until they hit their current maximum, at which point they become constant current and allow the voltage to drop to maintain the current constant.
For those who are curious about the exact behavior of various chargers under load, read all about it here:
http://www.righto.com/2012/10/a-dozen-usb-chargers-in-lab-apple-is.html
Click to expand...
Click to collapse
Well said, and great article!
ackattacker said:
All high-quality, brand name chargers feature overcurrent protection of some sort. All of them. You can stick a paper clip in them and totally short them out with no ill effect. If a charger emitted magic smoke under load it was a defective unit. They are by design "constant voltage, constant current" chargers, meaning they endeavor to supply a constant voltage until they hit their current maximum, at which point they become constant current and allow the voltage to drop to maintain the current constant.
For those who are curious about the exact behavior of various chargers under load, read all about it here:
http://www.righto.com/2012/10/a-dozen-usb-chargers-in-lab-apple-is.html
Click to expand...
Click to collapse
I have been looking everywhere for information on this topic. Everyone seems to think using a non spec cable is the end of the world but it seems it is not.
Sent from my Nexus 5X using Tapatalk
so i'd be correct to say that if i used the One Plus type A to type C cable rated for 2.4A on my 12W iPad charger rated for 2.4A output, i'd be ok?
semajm85 said:
so i'd be correct to say that if i used the One Plus type A to type C cable rated for 2.4A on my 12W iPad charger rated for 2.4A output, i'd be ok?
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Maybe. It's not entirely risk free, but - as that article notes - it's probably OK. It's a calculated risk. That about sums up the entire issue.
Has there been any A to C adapters that have been approved? I don't think I saw any in that spreadsheet going around.
NCguy said:
Has there been any A to C adapters that have been approved? I don't think I saw any in that spreadsheet going around.
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http://www.amazon.com/iOrange-E-Bra...?ie=UTF8&qid=1447681815&sr=8-2&keywords=USB-C
DebauchedSloth said:
http://www.amazon.com/iOrange-E-Bra...?ie=UTF8&qid=1447681815&sr=8-2&keywords=USB-C
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Thanks for that. Looks like that adapter is C to A. Is there a certified A to C that I've overlooked?