Database Users

using an Apple/iPhone charger? ?

Is there anything wrong with using my iPod charger to charge my nexus 7?
It says 5v 1A, and it's an aftermarket white cube iPhone/iPod charger.
I plugged it in for a few seconds and it showed the charge icon.
Some people say it's better to charge slowly, and others say you might burn up the charger, so what's the deal here?
Also, does Apple have some kind of funny voltage thing? I seem to recall something like there's +3v or something on the data pin? Will that mess up something with long term use?
And while we're at it, what about the standard USB wall chargers, 500 mAh? How about those?

Yes there will be world war 3 and you will be taken to court.
Sent from my Nexus 7 using Tapatalk 2

u need 2a.

Your nexus will rma itself
Sent from my Nexus 7 using Tapatalk 2

seriously? I expected serious answers..
swisstourist said:
u need 2a.
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Click to collapse
but then why do they say you can charge it with a 500 mAh with the screen off?
xopher.hunter said:
Your nexus will rma itself
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Click to collapse
what do you mean, wiseguy?

The N7 charger is 2A, not 1A. So do not use it.
Sent from my Transformer TF101 using xda premium

just lou said:
The N7 charger is 2A, not 1A. So do not use it.
Sent from my Transformer TF101 using xda premium
Click to expand...
Click to collapse
so it won't just charge it slower? will it damage the charger or my N7?

mvmacd said:
so it won't just charge it slower? will it damage the charger or my N7?
Click to expand...
Click to collapse
Possibly all of the above could happen.
Sent from my Transformer TF101 using xda premium

just lou said:
Possibly all of the above could happen.
Sent from my Transformer TF101 using xda premium
Click to expand...
Click to collapse
what if it was 500 mAh?
even google says you can charge [with the screen off] at 500 mAh [standard phone charger, usb, laptop, etc]
so why would making that 1A ruin my device and the charger?
:victory:

mvmacd said:
what if it was 500 mAh?
even google says you can charge [with the screen off] at 500 mAh [standard phone charger, usb, laptop, etc]
so why would making that 1A ruin my device and the charger?
:victory:
Click to expand...
Click to collapse
no it will just charge slower. i dont know where people are getting their info that a lower amp charger can ruin your nexus. if the amp is too low it just wont charge. So when i nexus is plugged into my desktop to transfer files and charging it can get damaged?
ive been using 3 different chargers on my nexus 7 and they all work but at different rate. the lowest one is a 700mah motorola car charger that can still charge the tablet running maps and tethered to my phone. It charges very slowly though.
sometimes i plug it into my 1amp samsung charger to charge it overnight and would charge the nexus is about 4-5 hours. Im not sure if this is true but i read that using a slower charger is better on the battery. just be careful using cheap chinese chargers, those can ruin your device if you get a bad unit.

neotekz said:
no it will just charge slower. i dont know where people are getting their info that a lower amp charger can ruin your nexus. if the amp is too low it just wont charge. So when i nexus is plugged into my desktop to transfer files and charging it can get damaged?
ive been using 3 different chargers on my nexus 7 and they all work but at different rate. the lowest one is a 700mah motorola car charger that can still charge the tablet running maps and tethered to my phone. It charges very slowly though.
sometimes i plug it into my 1amp samsung charger to charge it overnight and would charge the nexus is about 4-5 hours. Im not sure if this is true but i read that using a slower charger is better on the battery. just be careful using cheap chinese chargers, those can ruin your device if you get a bad unit.
Click to expand...
Click to collapse
so how can it ruin my device? I can see how the charger can get burnt out if the 7 tries to pull too many amps from it...
and my charger is a chinese charger..

mvmacd said:
so how can it ruin my device? I can see how the charger can get burnt out if the 7 tries to pull too many amps from it...
and my charger is a chinese charger..
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Click to collapse
I'm not say all Chinese chargers are bad but just be careful with it. If your charger or tablet is not getting too hot while charging and stops when the battery is full then it's probably fine.

Will charge really slowly but will not damage. Why not using the n7 charger?
Sent from my Nexus 7 using Tapatalk 2

won't hurt it, I use many diffrent charges depending on where I am @ the time, mostly I use a cheap china dock that charges @ 1amp, a bit slow but works fine.
your only issue may be the scorn your n7 feels as an apple product revitalizes it
Sent from my HTC Vision using xda premium

Yeah, it'll charge really slow. There won't be any damage to the Nexus or the charger.
Sent from my Nexus 7 using Tapatalk 2

Using Nexus 7 charger to charge mobile phones?

Hi,
Nexus 7 charger ouputs 2A.
Is it safe and ok to use it to charge Galaxy Nexus, Nexus S, and HTC Desire?
I am thinking more in the long run, if it does not brake the phones.
Thanks

It should not hurt anything.My daughter charges her Droid 4 with my charger every day.

It'll charge it really slow since phone chargers are 1A. Everyone will have their opinion on this but my opinion is I wouldn't use a phone charger on the N7....it could over heat due to it charging slow. But I'm sure you'll hear others saying a slow charge is better so....
Sent from my Nexus 7 using xda premium

dirtyhamster73 said:
It'll charge it really slow since phone chargers are 1A. Everyone will have their opinion on this but my opinion is I wouldn't use a phone charger on the N7....it could over heat due to it charging slow. But I'm sure you'll hear others saying a slow charge is better so....
Sent from my Nexus 7 using xda premium
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Click to collapse
I was asking the other way around.
To use Nexus 7 to charge my phones. But the previous user just answered, thanks James.
When traveling, I want to carry just one charger for all my devices.
Sent from my Galaxy Nexus using xda premium

gogol said:
Hi,
Nexus 7 charger ouputs 2A.
Is it safe and ok to use it to charge Galaxy Nexus, Nexus S, and HTC Desire?
I am thinking more in the long run, if it does not brake the phones.
Thanks
Click to expand...
Click to collapse
Yup, it's fine, because a standard charger is, or used to be, 500 mAh, at 5 volts.
Some chargers are more mAh, like 700, and some are even 1 A.
If a charger is 2A, and your phone only draws 500 mAh, that is perfectly fine, because it's only drawing a quarter of what the charger can produce. In this case, the charger probably won't even get warm.

Neither my Sensation nor my wife's Sensation XL has died yet from using the Nexus charger
What mvmacd says is correct - just because the charger can supply 2A, it is the device that decides how much current it draws from the charger.

dirtyhamster73 said:
It'll charge it really slow since phone chargers are 1A. Everyone will have their opinion on this but my opinion is I wouldn't use a phone charger on the N7....it could over heat due to it charging slow. But I'm sure you'll hear others saying a slow charge is better so....
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
I actually find the charger that came with my razr does the job fine and its rated at 850ma. Other lower power chargers i have are slow though.
I doubt a slow charge would lead to overheating or else connecting to a pc would cause this too.
I think for chargers its a case of trying them to see how well they work.
Sent from my Nexus 7 using Tapatalk 2

gbroon said:
I actually find the charger that came with my razr does the job fine and its rated at 850ma. Other lower power chargers i have are slow though.
I doubt a slow charge would lead to overheating or else connecting to a pc would cause this too.
I think for chargers its a case of trying them to see how well they work.
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Science proves other than your opinion. A too-low or too high max voltage or amperage charger can and will lead to overheating and severe reduction on battery life and can destroy the adapter as well.

MrSchroeder said:
Science proves other than your opinion. A too-low or too high max voltage or amperage charger can and will lead to overheating and severe reduction on battery life and can destroy the adapter as well.
Click to expand...
Click to collapse
Care to explain why Google says you can charge your device with a 500 mAh charger [standard USB port]? ["with the screen off"]
Won't it severely reduce battery life and burn out the motherboard of the USB? Oh, really? Google just forgot about that part when they were writing the instruction manual?
:silly:

MrSchroeder said:
Science proves other than your opinion. A too-low or too high max voltage or amperage charger can and will lead to overheating and severe reduction on battery life and can destroy the adapter as well.
Click to expand...
Click to collapse
Science generally proves things with facts and figures. From a forum point of view, a link is your minimum effort here

MrSchroeder said:
Science proves other than your opinion. A too-low or too high max voltage or amperage charger can and will lead to overheating and severe reduction on battery life and can destroy the adapter as well.
Click to expand...
Click to collapse
Modern devices and chargers shouldn't have this problem because of built-in regulators. A smartphone won't try to draw more than it can handle and chargers won't try to supply more than they can handle (unless they're very cheap).

I have been N7 charger on phone with no problem so far. I wonder about the statement about the phone not drawing more than it needs though. I replaced the battery in my TB after 9 months due to low life and swelling. I'm pretty sure the swelling came from leaving the phone on a car charger all day, even after the battery was full. If my phone had the ability to stop taking the charge it didn't need, this wouldn't happen...
Sent from my Nexus 7 using xda premium

My opinion still stands....I don't trust using anything other than the charger that came with the device. 6th post down makes perfect sense to me.
http://forum.xda-developers.com/archive/index.php/t-1370215.html

Your battery was likely defective. My phone literally stays on the charger all day when I'm not out.

gogol said:
Hi,
Nexus 7 charger ouputs 2A.
Is it safe and ok to use it to charge Galaxy Nexus, Nexus S, and HTC Desire?
I am thinking more in the long run, if it does not brake the phones.
Thanks
Click to expand...
Click to collapse
If the phones also charge at 2A then you should be fine. If the phones charge at lower amps (say 1A or 1.5A) then I wouldn't recommend using it everyday as it may reduce the battery efficiency. If it's an emergency go ahead and use it.

There's no harm in using a higher current charger with a lower current phone because the charger is not what's actually charging the battery, it's the phone, and the phone will limit the charging current. You can confirm this with a multimeter. The charger can't force the phone to draw more current than it was designed for. This would be different if you were charging the battery directly with a dedicated charger because then the charger itself is directly controlling the charging current.

MrSchroeder said:
Science proves other than your opinion. A too-low or too high max voltage or amperage charger can and will lead to overheating and severe reduction on battery life and can destroy the adapter as well.
Click to expand...
Click to collapse
Nope, just nope.
Sincerely, an electrical engineering student.
Sent from my Nexus 7 using Tapatalk 2

My Nexus 7 literally takes hours to charge

My Nexus 7 battery takes forever to charge. And this is even when I use my stock cable to the wall charger. I know it takes around 3-4 hours to charge it from dead to full but for some reason mine is only HALFWAY full at the 4 hour mark and I usually have to leave it on the charger the whole night/day for it to be fully charged.
I have no other defects on this product except for this one. And I never dropped it or anything and I'm currently running 4.1.2.
Please help. I know I can't be the only one with this problem.

Definitely use the oem charger (2 Amp compared to 500-850 ma for most) and the supplied USB-3 cable. It will charge faster. After the long initial charge up to 100% mine has been charging pretty well. If I'm down around 10% it can take up to 4 hrs to charge, but the battery is huge compared to most phones. It sounds like something isn't working normally for you. Have you tried turning it off, then charging?

Yes sorry I was unclear in the original post. I'm using everything stock when I charge my Nexus 7. I don't use any other cable. And yes I completely turn it off when I'm charging but yet it still charges horribly slow.

I would test another comparable charger just to make sure it's not the charger or cable itself.

There is a lot of threads that talk about the charger and the possible ones you can & can't use (Nexus 7 is picky). I use a HP Touchpad USB plug and a cable. It does the job well :good:

Saturny said:
There is a lot of threads that talk about the charger and the possible ones you can & can't use (Nexus 7 is picky). I use a HP Touchpad USB plug and a cable. It does the job well :good:
Click to expand...
Click to collapse
+1
I use the HP touchpad charger, Playbook charger and KFHD charger. All three of those get the job done fast.
With those three, I don't even need to use the N7 charger lol
Sent from my Nexus 7 using xda app-developers app

Do you keep it on while you're charging it? If so that will definitely make it take longer to charge since it's using power.

Nope.
brando56894 said:
Do you keep it on while you're charging it? If so that will definitely make it take longer to charge since it's using power.
Click to expand...
Click to collapse
I keep mine on, so I can check the % on screen. And long as you don't use it while it's charging, it won't take longer.

Trust me I keep everything that I charge off so that it can charge faster and not be using any power while charging. It seems no one else has gone through this from this thread though. It sucks that I have to get a new charger when the stock charger should be still working fine and perfectly.

As far as i have read the informations on / in box. It said to use the OEM charger only. I didn't really measure time when charging, but it always took maybe 2-3 hours max to charge the device completely.

Try blowing out your micro port with compressed air, had this on my galaxy2
Sent from my Nexus 7 using xda premium

I use a Samsung charger with the usb cord, i for a USA charger.. Mine also uses hours... Good to know IT Will charge netter with others
Thnx
Sent from my Nexus 7 using xda app-developers app

Charging your Nexus 4 with an iPhone wallplug?

I've had the Nexus 4 for about 2 months now and it's really the best phone I've ever owned. But switching from an iPhone 4S, I can't help but realize how long charging takes. It's about 2 hours to a complete charge on an iPhone and almost 4 hours on a Nexus 4. I know the Nexus 4 has a battery that's a third bigger, but it shouldn't mean that it will take twice as long to charge.
I still have my iPhone wall plug lying around. Has anyone been brave enough to combine their Nexus 4 USB cable with an iPhone wall plug to see if it would charge faster? Or is there any charger that'll speed up the process (Samsung or HTC)? I haven't tried it yet I know Google and LG advise against using other chargers but I think it's worth a try especially if I need a quick charge before I go somewhere.
Side note: Previously, I did charge my iPhone using a iPad charger connected to a MacBook Pro extension. It would fully charge in about 90 minutes which was 30 minutes quick than usual and I did it often for almost a year without any problems.

Doesn't the iPhone wall charger have a rating of 1 Amp? The N4 charger has a higher rating of 1.2 Amps. Check and see.

Yeah, I've read that somewhere. But like always, numbers don't always reflect world world performance.
My N4's at full charge right now but I might give it a go tonight when it's empty. If anything, I would just expect the N4 to detect it as a USB source instead of an AC source.

rolemodel4kids said:
Yeah, I've read that somewhere. But like always, numbers don't always reflect world world performance.
My N4's at full charge right now but I might give it a go tonight when it's empty. If anything, I would just expect the N4 to detect it as a USB source instead of an AC source.
Click to expand...
Click to collapse
It'll charge. That's not an issue. I'm just thinking it won't be any faster.

I've plugged my nexus into an iphone plug every day since I got it back in December (it takes up less space). The phone is fine, however, I wouldn't have a clue is it's faster or slower to load.

How long would you say it takes you to completely charge from 10% battery?

Yeah ive noticed it takes longer to charge then an iphone but im not to fussed.

I wouldn't do it... your phone might turn into an iPhone

I've been charging with iPhone charger and had no dramas either.
Any electrical appliance will try draw what it needs regardless of what's powering it.
eg. It's supply and demand - you've got a tap designed to fill a 2 litre bucket of water in 4 hrs filling a 3 litre bucket.
If you want good charge times grab a 10 watt/ 2amp charger.
But there isn't a problem with what you've got if the time issue isn't a factor for you.
Sent from my Nexus 4 using xda premium

The N4 only pulls about 700-800mA max. So a 1A charger is more than enough. But as has been said, it won't make it charge any faster unless there is something wrong with your stock charger.
Sent from my Nexus 4

Install Elixir and charge your device with iphone charger and then stock charger. In elixir you can see at what rate your battery charges(mA). compare both and you be the judge of it.
Peace.

4 hours? I'm lucky if mine takes 2. It only takes 4 on the cheap wireless charger I have.
Sent from my Nexus 4 using xda app-developers app

rolemodel4kids said:
Has anyone been brave enough to combine their Nexus 4 USB cable with an iPhone wall plug
Click to expand...
Click to collapse
I've always wondered, why do people get so concerned about using different wall plugs? Surely it's the phone that controls how fast it charges and how much it takes in? My family has 4 different ones (LG/Nexus, HTC, Samsung and iPad) and I've just used whichever one was free without issues. Please correct me if I'm wrong but I've just never actually worried about this and it worries me that so many people worry about it
Anyway to see which charges fastest use something like CurrentWidget which displays battery drain and charge in mA.

Nigeldg said:
I've always wondered, why do people get so concerned about using different wall plugs? Surely it's the phone that controls how fast it charges and how much it takes in?
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Click to collapse
Yes, exactly.
Sent from my Nexus 4

I tried it out. Makes no difference at all.
Actually, it might be a little slower than the LG charger.

the service manual states 950mah to 90% then uses tickle charge, i use my sony camera charger at 1.5amps since its smaller, it takes like 2.30 hours to charge,

Nigeldg said:
I've always wondered, why do people get so concerned about using different wall plugs? Surely it's the phone that controls how fast it charges and how much it takes in? My family has 4 different ones (LG/Nexus, HTC, Samsung and iPad) and I've just used whichever one was free without issues. Please correct me if I'm wrong but I've just never actually worried about this and it worries me that so many people worry about it
Anyway to see which charges fastest use something like CurrentWidget which displays battery drain and charge in mA.
Click to expand...
Click to collapse
You are right, no worries with any usb charger. I've been charging my phone (N1, NS, GN, N4, Note 2) all using my old Sony Ericsson 700mA charger without any problem. Plug in before I go to sleep, then next morning it's full. Ready for whole day usage. Have been doing that for ages.

The iDevice chargers actually cut their output when charging a non iDevice. If you plug your phone in, sometimes you'll see Charging - USB instead of Charging - AC

I use my ipad charger, no issues but obviously I can't give input on charge time.
I stayed away from the stock charger since so many people had problems with it.

What about getting a higher amp wall plug say 2.1 amp at 5 watts and using FAST CHARGE?
Sent from my Nexus 4 using xda app-developers app

different charger amp levels

I recently bought the nexus 4 and have been having a blast with it. For a little while I lost the USB charger in my house, so I started using my iPad charger for it. Since the stock nexus 4 charger has an output of 1.2 amps 5v DC and the iPad charger has 2.0 amps 5v DC would prolonged use of the iPad charger possibly affect how long the battery last since it charges it faster then normal, or am I just being stupid and its fine to use the higher amperage charger?

There is a lot of threads explaining this but I'll explain the best I can higher amp equals quicker charge however gets the battery hotter so the battery life could be affected
Sent from my Nexus 4 using xda premium

It is the phone that decides how much current to "pull", not the charger that "pushes" it.
So it's fine to use a higher-rated charger.
Sent from my Nexus 4

steviewevie said:
It is the phone that decides how much current to "pull", not the charger that "pushes" it.
So it's fine to use a higher-rated charger.
Sent from my Nexus 4
Click to expand...
Click to collapse
This info is correct. You have nothing to worry about.
Unless you go stupidly over. Like 13 amps will probably overload and Fry the charging circuit.
But at 2 amps you will be fine
Sent from my Nexus 4 using xda app-developers app

Current is not pushed... it is drawn. You could have 20 Amps available (like a typical 120V outlet). Whatever current the device plugged into it needs it will draw... nothing more.
With that said, Apple chargers do not short pins 2 & 3 (data pins) of the USB connector. Instead, they put a resistive load across them to communicate the charger specs to the device. Nexus (and most OEM Android) chargers short these pins. Some android devices, Nexus 7 for example, sense the load on Apple chargers' data pins and assume it is a computer and drops the load to draw only 500 MA. I have not tested the Nexus 4, but would assume it behaves the same way as a Nexus 7.

Okay thanks guys. I did notice it was a little warmer, but i think that might have been from the emulator on that i was using. Just wanted to make sure i was killing the overall possible battery life.