Database Info

[Q] charging the G2X with iphone charger?

HI everyone, hope thats the right forum
I have in my possession an iphone 4 charger, and since i dont have a dedicated G2X charger i was wondering if it is possible to charge the LG phone with Iphone charger?
thanks!

Well I thought iPhones use same charger as ipods which has a lot wider plug than an android charger. But if that's changed and it fits than plug it in and find out.
Sent from my LG-P999 using xda premium

I don't see it working unless you have some sort of an adapter. The G2x uses a micro USB port, and the iPhone uses a proprietary port.

please see bellow what charger i have. just need to plud the USB cord in the charger, since it have USB input.
so, technically it should work, but will this affect the battery in the long run? i mean, maybe the voltage\current values are different.

If it is a USB adapter then it should conform to USB standards and would then work. I think most of the previous responses assumed you meant a charger with the iPhone tip.
Sent from my LG-P999 using Tapatalk

The idea itself will not work, you can pick one up from Amazon or eBay for pretty cheap.
Sent from my LG-P999 using xda premium

Actually it's likely it won't work. Compare the amps on the G2x charger vs. the iPhone one (and just about any other generic USB charger). All the one's I have are different, lower, and don't work with the G2x. One of them, for some odd reason, makes the touchscreen not work at all when plugged in.

lilaliend said:
Actually it's likely it won't work. Compare the amps on the G2x charger vs. the iPhone one (and just about any other generic USB charger). All the one's I have are different, lower, and don't work with the G2x. One of them, for some odd reason, makes the touchscreen not work at all when plugged in.
Click to expand...
Click to collapse
That is not correct, iphone charger will work technically, however it will reduce your battery life over time due to iphone charger are 1amp while g2x charger is 0.7Amp. Amps must meet to properly charge at the pace selected by manufacturer and battery specs. Lower amp takes time to charge, higher amp will charge fast but will reduce life.
Sent via MIUI-G2X

Mine is rate for 1AMP.
Sent from my LG-P999 using xda premium

nycelitemaster said:
That is not correct, iphone charger will work technically, however it will reduce your battery life over time due to iphone charger are 1amp while g2x charger is 0.7Amp. Amps must meet to properly charge at the pace selected by manufacturer and battery specs. Lower amp takes time to charge, higher amp will charge fast but will reduce life.
Sent via MIUI-G2X
Click to expand...
Click to collapse
How does it even fit? The ports are totally different. Perhaps an adapter?
Sent from my LG-P999 using xda premium

DON'T DO IT!!!! your phone will suddenly become just like everyone else's and you won't be able to do anything about it! your technology will become dumbed down, and you will becomea victim of conformity!
HEED MY WARNING!!!

Don't worry, using that iPhone charger/adapter won't turn your Android phone into an iPhone.
The iPhone charger/adapter is a 5 volt USB adapter, it will work. The battery will charge normally, there's a charge regulation circuit in the phone and protection circuitry in the battery which will ensure that the battery won't be screwed. I use a variety of USB power adapters which range in their current rating which is the maximum current the device is capable of supplying at the rated voltage (although the cheap adapters' output voltage decreases as the current output (load current) increases. The LG power adapter I have is rated at 4.8 Volts and 1 Ampere output. I use that, a USB port on my computer which is rated at 5 Volts and 1/2 Ampere (500 ma), and other 5V power adapters. I also use a variety of micro USB cables some of which are just for supplying power, not data, and they work too.

Core Memory said:
Don't worry, using that iPhone charger/adapter won't turn your Android phone into an iPhone.
The iPhone charger/adapter is a 5 volt USB adapter, it will work. The battery will charge normally, there's a charge regulation circuit in the phone and protection circuitry in the battery which will ensure that the battery won't be screwed. I use a variety of USB power adapters which range in their current rating which is the maximum current the device is capable of supplying at the rated voltage (although the cheap adapters' output voltage decreases as the current output (load current) increases. The LG power adapter I have is rated at 4.8 Volts and 1 Ampere output. I use that, a USB port on my computer which is rated at 5 Volts and 1/2 Ampere (500 ma), and other 5V power adapters. I also use a variety of micro USB cables some of which are just for supplying power, not data, and they work too.
Click to expand...
Click to collapse
Good info.
Thanks
Sent from my LG-P999 using xda premium

thanks for the informative reply Core Memory.
didnt think using iphone charger will turn my android into iphone
so, bottom line - it is safe to use that charger.
Thanks!!

un.droid said:
thanks for the informative reply Core Memory.
didnt think using iphone charger will turn my android into iphone
so, bottom line - it is safe to use that charger.
Thanks!!
Click to expand...
Click to collapse
Yes, it's totally safe. I've got a service manual for an LG phone which is substantially the same as the G2X and Optimus 2X which shows the battery charge circuitry. That circuitry regulates battery charging. Here's some more info regarding the battery:
90% = 4.05V +/- 0.05V
60% = 3.83V ditto
30% = 3.72V ditto
10% = 3.64V ditto
OFF = 3.42V
The battery voltage decreases according to the load current (milliamps) over a period of time. The higher the load current during a specific period of time, the quicker the battery voltage decreases; that's why it is important to have everything except the cell radio and the operating system off when the phone is in standby. There will be some background processes, etc., which are necessary too. Bluetooth, GPS, and WiFi quickly drain the battery. Automatic updating should be turned off always. If you're not expecting any calls, turn the phone off. Setup your phone to reroute received phone calls to your home or work phone, if the call is important they will leave a message, then pick up the messages at your convenience. Use a ROM and kernel which are known to have good battery life.

ive been useing the iphone dock to charge my g2x and it works fine lol no issue

.7 Amp vs 1.0 Amp Charger

So the One X comes with a 1.0 Amp charger. The charger would not fit(too long) in the spot where I have been using my Samsung charger.
I compared the two and saw the only difference is the .7 A to 1.0 A. looked up if it was ok to use. Some even reported longer battery life with the slower charger. Makes some sense just lasts longer.
Maybe I am crazy but it seems like I get better battery life from the .7 charger.
I have went back and forth a few times....But of course not enough days to really tell.
thoughts?

Definitely overthinking it. It will just charge slower.

eallan said:
Definitely overthinking it. It will just charge slower.
Click to expand...
Click to collapse
Yep, what he said.
To think of it another way, you can charge your phone via a USB connection to your computer, but it's much slower. This is because USB only provides 0.5 (or maybe it's 0.2?) Amps.
However, going with an adapter that's HIGHER than 1.0A could cause damage.

In the long run, slower charges will likely make your battery last more cycles. But on a per-cycle basis, it should not give better battery life.

If you run your battery down, the smaller charger (and definitely the case for PC USB because they max out at 500ma) may not be able to charge at all. In normal cases, it is fine.

Higher than 1a won't damage anything. .7 might not actually charge the battery 100% depending on if the phone thinks it is usb(500ma charging mode) or ac charger(wont charge properly).
Sent from my Desire HD using XDA

c5satellite2 said:
Higher than 1a won't damage anything. .7 might not actually charge the battery 100% depending on if the phone thinks it is usb(500ma charging mode) or ac charger(wont charge properly).
Sent from my Desire HD using XDA
Click to expand...
Click to collapse
This. The voltage is what really matters. The phone won't draw more than it can to charge. If it draws 1A while charging and you put it on a 2A charger, it will pull 1A. But if the voltages don't match up and there isn't a protection circuit for that type of problem, you could fry the electronics with a higher amperage.

100% on the voltage! That is the important one. .7a shouldnt be recognized as a real ac charger resulting in the phone thinking it is USB 500ma charging mode which is the same as pc, slow. If the device thinks the .7a charger is ac charging mode, the battery probably will never charge to 100%. In fact if you were at 100%, and the phone was in ac charging mode with a .7a charger, it would drain your battery! More than 1a, the phone will only draw what it is capable of. Some aftermarket chargers will still charge in USB 500ma mode because the phone won't recognize them as ac charging 1a mode. I had an old HTC charger once that did funny things to my inspire, it would open navigation every time it was plugged in(thought it was a car dock I guess). Use real OEM chargers if possible. They will charge the fastest, and you won't have issues. The real HTC chargers at 1a are much faster than the aftermarket chargers I have tried. I have a good Kensington 1a car and wall charger, and the HTC blows them away as far as speed!
Sent from my Desire HD using XDA

c5satellite2 said:
100% on the voltage! That is the important one. .7a shouldnt be recognized as a real ac charger resulting in the phone thinking it is USB 500ma charging mode which is the same as pc, slow. If the device thinks the .7a charger is ac charging mode, the battery probably will never charge to 100%.
Click to expand...
Click to collapse
Actually, AC charging mode or PC USB mode is not determined by amprage or volts (all use 5v). It is determined by how the data pins are terminated. Most non-Apple chargers terminate data pins the same way so they will be recognized as AC charger. Apple chargers are the ones that may not be recognized by the phone as AC chargers because Apple terminates data PINs different than everyone else. Regardless of the charging mode, they all can charge to 100% if they can initiate the charge.
LiIon battery charging circuitary is much more complicated than your normal AA chargers. It is regulated internally so that slightly variations of input voltage won't affect the charging. It has to internally control the charge process precisely so that it can terminate the process at the exact moment (overcharging results in explusion).

Input power supply being 0.7A or 1A has no bearing on the level to which the battery is filled. Even input voltage has no bearing! The only impact to the system will be the rate at which you can charge.

Not true. Some chargers make the device think it is a real ac charger, but do not provide enough to charge to 100%. And yes it has to do with pinout. Some ac chargers aren't recognized properly and results in USB charge mode even if they have more than 500ma available. Even if your pc provides more than the USB standard of 500ma, it will only draw 500ma and charge slowly.
Don't mess with the voltage, it WILL damage your device! The previous post should be ignored, and deleted.
Sent from my Desire HD using XDA

I use my touchpad charger and its 5.3v instead of 5v and its definitely charging my phone faster than the HTC stock charger. No affect on battery life though.
Sent from my HTC One X using XDA

5.3v or 5v is ok because there is a little leeway, and I'm sure the 5.3 isn't exactly 5.3 anyway. If it was, the extra .3v is probably within range, and is not blowing things up, just stressing them a little more, making some heat, and wearing them out slightly quicker.
Try a 12v charger, see what happens. LOL.
Seriously the 5.3v might actually be closer to 5v than a charger labeled 5v and therefore could result in better charging. Remember, input voltage varies as well. Your electricity could go under 100v or as high as 120v. Our electric grid is not very consistent. Supply is constantly being adjusted to meet demand, resulting in widely varying voltages. I have seen it dip into the low 90v range on hot summer afternoons, and rarely in the 115v-120v range where it should be. The 5.0 volt charger would result in the best performance if it was actually putting out a TRUE 5v. A high quality charger, with high quality, consistent, 115v input power that is properly rated is ideal. In reality it doesn't exist.
5.3v close enough, might actually be better. One way to tell, put the voltmeter on it!
If you have access to volt/multimeter, could you post your ac voltage at the outlet and the dc voltage coming out of the 5.3v charger. Could be interesting. How many amps is the charger also? Might have to get one.
Sent from my Desire HD using XDA

Dont have that but this is the link to it
http://www.amazon.com/gp/aw/d/B0055QYJJM
I'll provide the exact specs when I get home.
Sent from my HTC One X using XDA

Can you clarify what you mean by this?
c5satellite2 said:
Not true. Some chargers make the device think it is a real ac charger, but do not provide enough to charge to 100%.
Sent from my Desire HD using XDA
Click to expand...
Click to collapse
Either an input power provides power or it doesn't. The only reason it would "stop" is if the charger in the phone runs out of headroom and I have yet to see this with any AC/DC or USB supply.
The whole issue of whether or not the phone identifies the power supply is an entirely separate discussion. But once it does identify and begin charging it will do so until completion.
---------- Post added at 12:13 PM ---------- Previous post was at 12:05 PM ----------
c5satellite2 said:
The 5.0 volt charger would result in the best performance if it was actually putting out a TRUE 5v.
Sent from my Desire HD using XDA
Click to expand...
Click to collapse
This is not true. Take two AC/DC adapters...
A) [email protected] = 4.24W
B) [email protected] =4.00W
The HTC One X has an internal switching charger with dynamic input power limiting. So it will actually be able to draw MORE current from Adapter A than Adapter B. Also, because the charger in the One X is a switching charger there will be negligible extra heat generated and no excessive wear and tear.

how did you know?
racerex said:
Can you clarify what you mean by this?
Either an input power provides power or it doesn't. The only reason it would "stop" is if the charger in the phone runs out of headroom and I have yet to see this with any AC/DC or USB supply.
The whole issue of whether or not the phone identifies the power supply is an entirely separate discussion. But once it does identify and begin charging it will do so until completion.
---------- Post added at 12:13 PM ---------- Previous post was at 12:05 PM ----------
This is not true. Take two AC/DC adapters...
A) [email protected] = 4.24W
B) [email protected] =4.00W
The HTC One X has an internal switching charger with dynamic input power limiting. So it will actually be able to draw MORE current from Adapter A than Adapter B. Also, because the charger in the One X is a switching charger there will be negligible extra heat generated and no excessive wear and tear.
Click to expand...
Click to collapse
Htc has input power limiting? Internal switching charger? Where did you get this information?

The plugpack will be voltage regulated(to protect from overvoltage with under designed load) not ampage regulated.
The battery charges via voltage float, the higher the voltage the quicker the charge, but the voltage is regulated anyways so there is no fast and slow charge. It is charging or it's not. The charge circuit steps up and down the voltage to give fast/slow charge not the plugpack in mobile phones.
1.0a versus 0.7a just means the rated output is lower. It does not change the load. All that happens is the 0.7a will be running over its rated output which results in running hotter and potential running undervoltage.
Running 0.7a is not good if the battery charge circuit will draw 1.0a by design. Your plugpack just becomes a firerisk.
You should always match the designed specifications, eg 12v 1.0a.
The device expects a 12v(or close) input and should be able to draw 1.0a without issue.
If you over or under volt the charge circuit it could blow up, if you over draw the supply it might melt.

is it ok to charge 0.7A battery with 1.0A charger

omer101 said:
is it ok to charge 0.7A battery with 1.0A charger
Click to expand...
Click to collapse
Did you not read the thread?
Sent from my Evita

Chargers amd charging

Is it bad to charge your phone with chargers other than the stock one. If so why? And whats the point jn different voltages
Sent from my Galaxy SIII

I would not to that, maybe that charger have different voltage
Sent from my GT-I9300 using xda app-developers app

Charging with any other charger will affect your cellphone's charging timeif the stock charger you use has a higher voltage than the one you are charging with then the cell will charge at a lower rate and will take more time then the stock charger would take.
This may not harm if you do this once in a while, but on the other hand if you use a charger with higher voltage than the stock charger it will harm your cell for sure.
Point is, use the stock charger or any other charger with similar voltage.

Assuming that your phone uses a standard USB connector fir charging, the voltage will always be the same. It is the current which changes.
Using a charger which can deliver a higher current is not a problem as the phone will just take what it needs. Using one with too low a current will result in your phone charging slowly though.

How much over 5v. can the nexus 5 take

Moved from general sorry
I just bought a Anker 24W / 4.8A Dual-Port Car Charger. I bought this to replace a cheap $2 charger that I did not want to use on my nexus 5
I just tested the anker charger and it puts out 5.24v-5.29v. I know that does not sound like much but all my other chargers AC wallwarts, and even the cheap $2 car charger all put out 4.95v-5.02v.
Should I go a head and use this anker car charger or should I return it? Thanks.

That's just how much the charge puts out. The phone may not accept that much input.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

Typically there is a boost/buck or other relatively efficient voltage regulator in the phones that manages the battery charging, so the 5% "over-voltage" that you are seeing shouldn't be an issue.
I'm guessing you measured that with no load -- most wall-warts run a little high without load, and then a little low at full load, so they can claim good regulation (+/-5%, for example) and a high current capacity. The change is due to internal resistance of the supply, something that you can compensate for, but can't ever get rid of.

LZLandingZone said:
That's just how much the charge puts out. The phone may not accept that much input.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
Only when talking current. Voltage is completely different.

jeffsf said:
Typically there is a boost/buck or other relatively efficient voltage regulator in the phones that manages the battery charging, so the 5% "over-voltage" that you are seeing shouldn't be an issue.
I'm guessing you measured that with no load -- most wall-warts run a little high without load, and then a little low at full load, so they can claim good regulation (+/-5%, for example) and a high current capacity. The change is due to internal resistance of the supply, something that you can compensate for, but can't ever get rid of.
Click to expand...
Click to collapse
Thanks,
No I measured with a load. I have a voltage current usb meter.
http://dx.com/p/usb-av-usb-power-current-voltage-tester-translucent-blue-silver-235090#.Uu2NRXddWLc
I just did another test. This time with my phone almost at 95% full. I got 5.33v while sucking down 332mha.
Im sending it back. I tested every charger brick and several other devices in my home. nothing came even remotely close to 5.3v
USB specs are 5.0v +-0.25% so I should see no more then 5.25v.

Charging currents

How would I know what the max current is a device can support like an accessory? So for example, the stock charger that comes with the Plantronics Voyager Edge is only 500ma. What happens if I plug it into a Qualcomm QuickCharge 2.0 charger like what comes with the S6? Will it blow up? Regulate down and charge normally? Charge rapidly?

km8j said:
How would I know what the max current is a device can support like an accessory? So for example, the stock charger that comes with the Plantronics Voyager Edge is only 500ma. What happens if I plug it into a Qualcomm QuickCharge 2.0 charger like what comes with the S6? Will it blow up? Regulate down and charge normally? Charge rapidly?
Click to expand...
Click to collapse
it will charge normally. it doesnt matter how big the output of the charger is. the phone will regulate it to only what it wants.
only time you will have an issue is if your charger output is too small. the phone will charge slow, and risk damage to the charger.

bweN diorD said:
it will charge normally. it doesnt matter how big the output of the charger is. the phone will regulate it to only what it wants.
only time you will have an issue is if your charger output is too small. the phone will charge slow, and risk damage to the charger.
Click to expand...
Click to collapse
Does this also apply to the headset I mentioned? How would the current being too low damage the charger? USB ports and car charger are very low current in general
Sent from my E5823 using Tapatalk

km8j said:
Does this also apply to the headset I mentioned? How would the current being too low damage the charger? USB ports and car charger are very low current in general
Sent from my E5823 using Tapatalk
Click to expand...
Click to collapse
1. yes
2. i didnt say it would damage the charger, i said there is a risk of it. thats because if its too small, the charger is working at maximum all the time.
3. usb's are regulated, not maxing out potential. im guessing car chargers do the same, however im not sure why. likely has something to do with a safe level considering the fluctuation in input voltage from the battery.

Hmm... So what about using a non-QC 2.0 charger (such as some that Anker make) on devices that support QC 2.0? Is there some safety issue or will it just charge slightly slower?

km8j said:
Hmm... So what about using a non-QC 2.0 charger (such as some that Anker make) on devices that support QC 2.0? Is there some safety issue or will it just charge slightly slower?
Click to expand...
Click to collapse
sorry, i dont know about those.
maybe you misunderstood before, i cant think of any common instance where there would be a safety issue.
as unlikely as it is that you will ever burn up a charger (or device for that matter), the only thing that will happen is some small electronic parts will go bad. not some huge fire or whatever. sure on the device there could be a nice exploding fire, but there about always from defect and also extremely rare. it happens maybe 1 or 2 times a year, and its gets posted everywhere, then people think its an epidemic and start asking all these unnecessary questions. im sure the yearly device sales are in the hundreds of millions work wide. if a couple a year blow up, well s happens.