... like the charger for the iPad or Galaxy Tab 10.1?
Sent from my GT-N7000 using xda premium
If I use My note Charger for the Galaxy Y it charges the phones much faster, but thats all, no issues. So I presume higher amperage charger should just do well as long as the voltage is not too much.
I am guessing here and would like to see experts' opinion.
I don't claim to be any expert, but using a higher amp charger should be just fine. As long as the voltage is the same as the original charger, amperage doesn't really matter - the phone will still only "suck down" as much amperage as it is designed for. The voltage however needs to be the same, as a higher voltage (or potentially even a lower one) could possibly damage the device. With a higher amp rated charger, you will likely get faster charging times and due to the power specs of the USB standard, no additional risks to the device.
However, like I said I'm no expert...
Sent from my X10 using Tapatalk
^ I confirm what the person above said: the voltage matters. As long as it is the same you should be good to go.
BUT: The higher the charge rate the more you reduce the lifetime of the battery. But on the other hand a replacement does'nt cost that much...
PS: The Tab has a 7000mAh battery which can handle high loads easely. No comparison to the "tiny" 2500mAh of the Note...
I use the ipad charger with the note, it is rated at 2 amperes vs the 1 ampere for the note. I also use a blackberry charger at times which is rated at 700 mA and even that works perfectly.
As long as it is standard usb voltage at 5V, it will be fine.
The amperage denotes the MAXIMUM current it can deliver. It does not mean the device will use all of it, unless it requires all 1A, 2A or whatevever the max amperage the charger is rated at.
The kernel controls how much amperage it will use while charging, so you won't get faster charging with a higher amp charger. It will still only suck 1A.
Sent from my superior GT-N7000 using Tapatalk
Zamboney said:
The kernel controls how much amperage it will use while charging, so you won't get faster charging with a higher amp charger. It will still only suck 1A.
Sent from my superior GT-N7000 using Tapatalk
Click to expand...
Click to collapse
I am not sure that is correct, I think physics controls it. The relationship is fixed, V=IR (Volts = Amps x Ohms). If the voltage is constant, and should be here at 5V, the maximum current will be determined by the resistance of the circuits charging the battery. I believe that has been measured at 1 Amp.
If the maximum current cannot be delivered by the charger (ie it is limited), there is just less current. If the charger can deliver more than one Amp, the circuits will not draw more than one amp, the voltage just will not 'push' any more current.
So the answer is you can pretty much use any amperage charger you like, as long as you make sure it is 5 Volts. More will damage the device and battery, less will not charge the battery.
I am not sure if, as suggested above, a higher amperage charger will shorten the life of the battery, but it sounds quite a reasonable thing to expect. I charge mine overnight with a 500mA charger, and use the stock 1000mA charger at my desk if I need a 'quick boost' before going out.
Zamboney said:
The kernel controls how much amperage it will use while charging, so you won't get faster charging with a higher amp charger. It will still only suck 1A.
Sent from my superior GT-N7000 using Tapatalk
Click to expand...
Click to collapse
i doubt this. if your phone is off, do you mean to say the kernel controls the charging rate too? if i use a two amp external charger off phone, how will you argue your kernel theory? so no, kernel has nothing to do with how much juice your charger throws and how much the battery accepts. show me a scientific comparison wherein a tweaked kernel has prolonged the charging time from a 1amp charger by inhibiting flow of current on hardware side.
Related
I just wanna ask if is it just OK to use a SAMSUNG CHAMP DUOS charger on a NOTE? Same with using a NOKIA E72 MICRO USB CABLE for PC CONNECTIVITY on a NOTE? Because when I tried it both are working fine. I am just worried that my NOTE will get damaged. I prefer DUOS' charger because it's longer same with the NOKIA E72 MICRO USB CABLE.
Thanks a lot!
Whatever charger you are make sure it should nor exceed the specification recommended by the manufacturer. For galaxy note we can use 1000 mah 5V rated output of any brand. I think we can go upto 1200 mah but this is completely at your own risk. Beyond this specifications physical damages may occur depending the exceed of limitations.
I am using HTC's charger of same specifications.
Sent from my GT-N7000 using xda premium
I been using Samsung DUOS charger for couple of months. So far ok. Although, I am curious about those charger with 2Amp output. Supposingly charged faster but so sure whether will cause damaged to the Note.
It depends on the type of your charger.
The amperage only says how much electricity the charger is able to produce. If it's a fairly new charger, it'll give only as much as the device connected to it will take - and your phone won't take more than it can handle.
Any charger with usb output and proper voltage will work, unless it's amperage is below the minimum required by the phone.
The KERNEL controls the charging current.
If you are using the stock kernel, the Note only gets max. 1000mA (AC-Charging) independent of the used charger.
Charging with a 1200mA-Charger (used a Nokia) wouldn't change the charging time due to the limitation.
As long as the charger obeys the USB-specifications, you shouldn't hurt your Note no matter of USB or AC.
Regards
battery charging takes three things:
a) a charging source (your USB or car "charger")
b) a charge controller (inside the device)
c) a battery
* A fixed voltage charging source cannot push current into a device, it has a current capability.
* A battery will only accept the current that it desires to charge to its full state.
* The terminal voltage of a battery for full charge is determined by its chemistry.
* Control of charging profile and current limiting is done by a charge controller...
The microUSB connections are rated at 1A max, the charge controller will limit the charge current to this...hence the comment by Thor, and there is no downside to plugging in a charging source that has a 2A capability...just dont assume you are getting 2A out of it
safilo said:
I been using Samsung DUOS charger for couple of months. So far ok. Although, I am curious about those charger with 2Amp output. Supposingly charged faster but so sure whether will cause damaged to the Note.
Click to expand...
Click to collapse
Am Confused..you guys pointing that whatever the amperage is supplied to our device, it consume (charge rate per hour) only what it has been designed?????
If so why am I getting faster charge time when I use my car charger??? My car charger rating is 1250mah..if I employ my car charger my phone gets full charge in less than 2 hrs from single digit battery % left!!! How is this happening??
Upto my knowledge 1 amp of current will take 1hr to charge 1 amp rating battery. Here our device is 2.5amp so it takes 2.5 hrs for full charge by 1amp supplied current. If amperage rating increased duration will be reduced. Normally kernels controls overcharging...but does it controls amperage rating?? I don't think so.
Sent from my GT-N7000 using xda premium
thor2001 said:
Charging with a 1200mA-Charger (used a Nokia) wouldn't change the charging time due to the limitation.
Click to expand...
Click to collapse
Then why am I getting faster charge with a car charger??
Sent from my GT-N7000 using xda premium
I think you will find that the car charger is not of such as table voltage as the mains supply. Generally car voltages can vary from about 13 Volts to 15 Volts (with the engine running). I am not sure that the car charger regulates this very well (I have seen the same with other devices). If so, it may well be providing more than 5 Volts.
In this case, that is the only way you could possibly damage the battery. I do not believe the Note itself would be damaged. I also do not think it would be noticeable over a short time, but only over a long time.
that is not how charging works...
a) charge acceptance in a battery is non-linear
b) amps*time is not equal to stored charge Ahr.. that would assume 100% efficiency.. and such is not the case. (that would assume zero internal resistance and so a battery would not get even warm if it was 100% efficient at converting incoming charge current to stored charge).
c) your car charger may or may not have a higher current capability than a desk charger.. my samsung charger charges at 750mA max.. my high output charger charges at 925mA max so one charger charges faster than another...
d) If by some lack or variation in calibration you are constantly able to charge at higher currents than the contacts are rated for, expect issues with the microUSB contacts over time..
There is a good reason why every manufacturer specifies and only warrants their devices to be used with their companion chargers.
You certainly dont need to take my word for any of this, the web is there for you to do your own research.
priyanv said:
Am Confused..you guys pointing that whatever the amperage is supplied to our device, it consume (charge rate per hour) only what it has been designed?????
If so why am I getting faster charge time when I use my car charger??? My car charger rating is 1250mah..if I employ my car charger my phone gets full charge in less than 2 hrs from single digit battery % left!!! How is this happening??
Upto my knowledge 1 amp of current will take 1hr to charge 1 amp rating battery. Here our device is 2.5amp so it takes 2.5 hrs for full charge by 1amp supplied current. If amperage rating increased duration will be reduced. Normally kernels controls overcharging...but does it controls amperage rating?? I don't think so.
Sent from my GT-N7000 using xda premium
Click to expand...
Click to collapse
jeromepearce said:
If so, it may well be providing more than 5 Volts.
In this case, that is the only way you could possibly damage the battery.
Click to expand...
Click to collapse
Regarding voltage I checked with a multimeter (a good professional one) it shows around 4.937- 4.982 V. And yes I know that this type of charging would affect battery.. But it's less expensive than the device so I didn't care.
Sent from my GT-N7000 using xda premium
Mystic38 said:
that is not how charging works...
a) charge acceptance in a battery is non-linear
Click to expand...
Click to collapse
Thanks for re calling my studies at school..now I remember I learnt this year's back..
But still I need further more clarification..
I wonder when I use my device hardly battery doesn't get hot at all.. Only the above portion were the camera rest get hot so is this means efficiency of battery is good and that heat us produced because of processor and other functioning parts? Whereas my older device's battery gets heated when I use heavy. Did I Get right?
Sent from my GT-N7000 using xda premium
My Note 2 charger says....
Input : 150-300 VAC 50-60Hz 0.35A
Output : 5.0V = 2.0A
Can i charge it with with following chargers....?
1. Note 1 Charger
Input : 100-240 V 50-60Hz 0.15A
Output : 5.0V = 1.0A
2. Iphone 3G Charger
Input : 100-240V 50-60Hz 0.15A
Output : 5V = 1A
3. Logitech Harmony Remote Charger
Input : 100-240V 50-60Hz 180mA
Output : 5V = 1A LPS
So can i Safely charge my Note 2 with any of the above chargers ? Or will charging with any charger Harm/Damage my Note 2's battery/internal components...?
Thanks.... :fingers-crossed:
As long as the Amper on the charger you use is lower than 2 there is no risk.
Voltage should always be the same or else it will damage your phone. (5volts = USB standard voltage)
If you use a 2,5 A charger the note will charge faster but will heat and damage the battery.
If you use a 1 A charger the note will charge twice slower than with the 2A charger but this charge will last longer because slower charging gives a little better battery life When I charge the note on USB 2.0 (0.5 A) / 3.0 is at 0,8 ampers it takes a whole night to get around 90% but my note lasts usually a little longer than when I fastcharge with the stock charger (one gets lazy to charge when a battery lasts so long lol...)
You can in theory use those other chargers but the charge time will be significantly slower, probably double the time. I used my nexus one charger which I use to charge everything in my room and I got an error message saying that I needed a stronger charger. You may get that message as well on those 1A chargers. I have been successfully been able to use my 1.8A blackberry charger with success though as well as my 1.5A griffin at work but I shorted the pins on the cable I use on that charger.
Like I said you can maybe use those other chargers but you may get a power message. You're best off with the stock charger.
use everything. "Just don't use LG chargers"
regards
From what I understand through research, It doesn't matter at all. Stay around the official amp voltage range. If it is a bit high, the phone will regulate how much power it draws from the charger. If it is a bit lower, then expect slow charge.
Sent from my GT-P7510 using xda premium
avetny said:
use everything. "Just don't use LG chargers"
regards
Click to expand...
Click to collapse
Why not?
I am using a Galaxy S III charger, I guess I am not causing any harm with that... ?
You can use any charger that outputs at 5 volts. Even if the charger is 5 volts 10amps. The phone will only draw as mu current as its built to draw and no more than that.
Been using my s2 charger since I got my note 2 with no trouble at all. I also sometimes use my HTC desire charger and again no trouble here.
epicfailguy2 said:
As long as the Amper on the charger you use is lower than 2 there is no risk.
Voltage should always be the same or else it will damage your phone. (5volts = USB standard voltage)
If you use a 2,5 A charger the note will charge faster but will heat and damage the battery.
If you use a 1 A charger the note will charge twice slower than with the 2A charger but this charge will last longer because slower charging gives a little better battery life When I charge the note on USB 2.0 (0.5 A) / 3.0 is at 0,8 ampers it takes a whole night to get around 90% but my note lasts usually a little longer than when I fastcharge with the stock charger (one gets lazy to charge when a battery lasts so long lol...)
Click to expand...
Click to collapse
Hmm I thought changing the voltage makes the difference in how much power it draws (and puts into the battery) and the amp rating is how much power the charger is meant to give. So if the phone uses up 2 amps at 5 volts, then it could overheat a charger rated at 1A at 5 volts.
That's how powering something like LEDs works. If an LED is rated at drawing 700 ma at 3.3V, a power supply rated at 3.3V and 700 or higher will work - it could be rated at 2,000 at 3.3V and the LED would still draw 700. If you raised the voltage to 3.7V, then the LED would consume more than 700mA and would be brighter, if it's made to take the higher voltage.
DarkManX4lf said:
You can use any charger that outputs at 5 volts. Even if the charger is 5 volts 10amps. The phone will only draw as mu current as its built to draw and no more than that.
Click to expand...
Click to collapse
This is correct. As long as you are using a standard USB charger, which will output 5v, you will be fine. The amperage will determine how fast your phone will charge. A charger with an output of 0.5A (500mAh) @ 5V, which is equal to 2.5 watts, will charge your phone slower than a 1A @ 5V (5 watt) charger.
No need to worry about hurting your phone with a higher amperage output. Your phone will only use as much current as it can handle. If it is rated to draw 900mAh @ 5V, doesn't matter if the charger can output 1A, 2A, or 5A, the phone will only draw a maximum 900mAh.
I bought some Palm microUSB charger during their liquidation. These days I dont even open the chargers for any phones I buy. Infuse, Xperia Ion, Focus, Exhibit, Note 1 all of them charge fine with it.
Mr_Armageddon said:
This is correct. As long as you are using a standard USB charger, which will output 5v, you will be fine. The amperage will determine how fast your phone will charge. A charger with an output of 0.5A (500mAh) @ 5V, which is equal to 2.5 watts, will charge your phone slower than a 1A @ 5V (5 watt) charger.
No need to worry about hurting your phone with a higher amperage output. Your phone will only use as much current as it can handle. If it is rated to draw 900mAh @ 5V, doesn't matter if the charger can output 1A, 2A, or 5A, the phone will only draw a maximum 900mAh.
Click to expand...
Click to collapse
Hi
If the voltage output of a charger is less than 5V (let's say 4.5V), will this hurt the phone & battery?
Note 2 isn't that picky on charger.
I have several off-brand 5V 2-3A chargers and all of then just work fine.
Glad I'm not the only one using a random charger... The ones phones come with, the cords are entirely too short.
DarkManX4lf said:
You can use any charger that outputs at 5 volts. Even if the charger is 5 volts 10amps. The phone will only draw as mu current as its built to draw and no more than that.
Click to expand...
Click to collapse
This is exactly what I am going to say.
Yes, its perfectly safe. I've used my iPad charger to charge my note 2 before, because it charges at 10 volts intsead of 5 so the phone charged faster.
Sent from my SPH-L900 using xda app-developers app
Sent from my SPH-L900 using xda app-developers app
I use whatever charger is available and fits. Have for YEARS. You guys worry too much about crap. It is just a phone, if it breaks, I'll buy a new one. Never had a problem though.
Using other device's charger is usually OK. But...
- An iPhone charger will work but because apple doesn't use the same standard to signal a USB charging port, you will be limited to 500mA (i.e. slow).
- Using another phone charger most of the time but because they are usally rated 1A instead of 2A it will charge slower.
The Note 2 seems to be quite picky about chargers and cables, for example, I couldn't get a full charge with cheap micro-USB cables from eBay and my old Nexus One charger. The best IMHO is a quality 5V charger that does at least 2A and follows the USB charging port convension of shorting D+ and D-.
More than 2A is not a problem because the device will only use as much as it needs. However if it is less, as the phone will try to pull 2A, the voltage will drop bellow the acceptable threshold. Usually the phone can adapt by charging slower but for some reason it didn't work with my Nexus One charger (1A).
Last nite, I played dead trigger until battery warning indicated 4%.
But I still keep playing and suddenly the screen went black.
I think the battery is totally dried out at that time. So I used the following
charger but failed to charge even after 10min. Here's the charger:
1. 3rd party 5V 3A charger,liteon brand.
2. old nokia 0.5A charger.
3. original samsung note2 charger.
all those 3 charger works normall on my n10 before last nite.
and suddenly i think maybe i can try out the original charger of n10.
And it works!
So i wonder if samsung or google put special charger on the adapter?
Before we know anything furthur.pls put ur n10 charger in safe place.
I think most tablet chargers output a voltage of 12v. That might of kicked your battery back to life.
xxKamikazexx said:
I think most tablet chargers output a voltage of 12v. That might of kicked your battery back to life.
Click to expand...
Click to collapse
I've confirm the voltage of my n10 adapter. Which printed "5V 2A".
It probably just needed a certain amount of minimum battery voltage to function and show charging. I doubt if the OEM power supply is special in any way. The charging circuit is really inside the N10.
wptski said:
It probably just needed a certain amount of minimum battery voltage to function and show charging. I doubt if the OEM power supply is special in any way. The charging circuit is really inside the N10.
Click to expand...
Click to collapse
when i plug in the non-n10 charger, even after 10min,n10 is not able to boot. Only flaahing the battery charging symbol for 1 sec.
when i plug in the original charger, n10 can be boot instantly.
thats why i think it is very weird about the original charger. but other chargers still works well when n10 battery is NOT completely dried out.
matika said:
when i plug in the non-n10 charger, even after 10min,n10 is not able to boot. Only flaahing the battery charging symbol for 1 sec.
when i plug in the original charger, n10 can be boot instantly.
thats why i think it is very weird about the original charger. but other chargers still works well when n10 battery is NOT completely dried out.
Click to expand...
Click to collapse
Yeah, that is very strange indeed. It does draw in the 1800mA range from the battery during boot up. Are you using the same micro-USB cord all the time? It was reported that there are big differences in charging rate with different brands of cords.
This was covered in another thread recently.
Basicially the Samsung chargers have 2 pins shorted together to get full charging power of around 1.5A with the n10. Using other chargers will get you around 500ma output.
My guess is if you left your tablet on the "other" chargers overnight it would come on just fine. They simply don't output enough juice to power the tablet when the battery is that low.
matika said:
when i plug in the non-n10 charger, even after 10min,n10 is not able to boot. Only flaahing the battery charging symbol for 1 sec.
when i plug in the original charger, n10 can be boot instantly.
thats why i think it is very weird about the original charger. but other chargers still works well when n10 battery is NOT completely dried out.
Click to expand...
Click to collapse
Had you left the other chargers on long enough, the tablet would have booted fine. I've run into this. I have an old(er) Samsung Tab 2 10.1 charger I use with my N10 (now along with a Pogo cable) and my N10 charges rapidly. That, coupled with the two wires shorted out in Samy's setup for the larger amp's.....also, in my job, I work with other chargers all the time and use them all the time across multi platforms, to include my N10, and it charges fine (albeit much more slowly).
swany6mm said:
Had you left the other chargers on long enough, the tablet would have booted fine. I've run into this. I have an old(er) Samsung Tab 2 10.1 charger I use with my N10 (now along with a Pogo cable) and my N10 charges rapidly. That, coupled with the two wires shorted out in Samy's setup for the larger amp's.....also, in my job, I work with other chargers all the time and use them all the time across multi platforms, to include my N10, and it charges fine (albeit much more slowly).
Click to expand...
Click to collapse
My charger(PS) for my Dell Streak 7 works just fine with the N10. This all makes sense except for the fact that the poster stated using a: 3rd party 5V 3A charger,liteon brand which didn't work.
wptski said:
My charger(PS) for my Dell Streak 7 works just fine with the N10. This all makes sense except for the fact that the poster stated using a: 3rd party 5V 3A charger,liteon brand which didn't work.
Click to expand...
Click to collapse
Should still work fine. Voltage is the same and the device will only draw as much amperage as needed. May have something to do with the circuitry in the charger? It may have been bad. As long as you don't supply more volts you are OK. More amps is also OK. Not enough amps will lead to burning up the charger unless the device is smart enough to realize its on a low amp charger (like the n10) and kick down so as not to over draw (ie - over drawing from the USB port which is a .5amp (500mAmp) or 1amp (1000mAmp)...someone correct me on the number here please)
The whole reason manufacturers tell you not to use someone else's charger is so you don't plug in, say, a 12 volt charger into a 5 volt item. That would pop something. That or some cheap charger poorly built could allow "dirty" power through causing problems. Both issues voiding warranties
Not sure if it's been mentioned, but depending on the usage of the tablet, you might not be able to charge it quicker than the power usage. For me, if I'm playing a demanding game at 1.7Ghz and max brightness, neither USB or Pogo can charge the tablet, and battery still drops (slower, but still drops).
swany6mm said:
Should still work fine. Voltage is the same and the device will only draw as much amperage as needed. May have something to do with the circuitry in the charger? It may have been bad. As long as you don't supply more volts you are OK. More amps is also OK. Not enough amps will lead to burning up the charger unless the device is smart enough to realize its on a low amp charger (like the n10) and kick down so as not to over draw (ie - over drawing from the USB port which is a .5amp (500mAmp) or 1amp (1000mAmp)...someone correct me on the number here please)
The whole reason manufacturers tell you not to use someone else's charger is so you don't plug in, say, a 12 volt charger into a 5 volt item. That would pop something. That or some cheap charger poorly built could allow "dirty" power through causing problems. Both issues voiding warranties
Click to expand...
Click to collapse
Never seen anything burn up because of low amperage., power or watts generate heat and power(watts)=voltage x current.
Did you ever see a PS(charger is inside the N10) with a USB port that supplies anything but 5V? I haven't.
Current (amps) does the charging.
No USB charger will provide anything more than 5.1 volts. If the charging block has a USB plug look at the rating. Amperage for smaller devices may be 1a or even less. Newer big smartphones have bigger batteries and need more current to charge. My old Thunderbolt charger is 1A, the charger Motorola provides for my Maxx HD is 1.5A, the Samsung charger for my Galaxy Tab 2 7.0 is a 2 amp charger, so is the charger for the iPad that some frickin' jerk ripped off from my house. The Xoom escaped that problem by having a separate charge plug, not using the USB system, it 12 volts at 1.5 amps. See the pattern? A tablet of any kind has an even bigger battery and needs even more current to charge. The reason the N10 may lose charge even when plugged in is that the charger can't deliver the current needed to run the device and charge the battery simultaneously.
As I see it, Samsung and Google need to supply a slightly higher amperage power block to compensate for the use/charge balance problem. Our solution would be to turn it off and charge the device every night or even leave it plugged in when not in use.
Another thing is the surface area for current transfer. The USB points are tiny, the POGO Pins, dedicated to charging would be able to handle more current because they have more surface area.
Any one who knows better may correct me, I just ordered an N10 today from Google so my information here is what I have read here and what I know from years in the electronics field..
ongre12 said:
No USB charger will provide anything more than 5.1 volts. If the charging block has a USB plug look at the rating. Amperage for smaller devices may be 1a or even less. Newer big smartphones have bigger batteries and need more current to charge. My old Thunderbolt charger is 1A, the charger Motorola provides for my Maxx HD is 1.5A, the Samsung charger for my Galaxy Tab 2 7.0 is a 2 amp charger, so is the charger for the iPad that some frickin' jerk ripped off from my house. The Xoom escaped that problem by having a separate charge plug, not using the USB system, it 12 volts at 1.5 amps. See the pattern? A tablet of any kind has an even bigger battery and needs even more current to charge. The reason the N10 may lose charge even when plugged in is that the charger can't deliver the current needed to run the device and charge the battery simultaneously.
As I see it, Samsung and Google need to supply a slightly higher amperage power block to compensate for the use/charge balance problem. Our solution would be to turn it off and charge the device every night or even leave it plugged in when not in use.
Another thing is the surface area for current transfer. The USB points are tiny, the POGO Pins, dedicated to charging would be able to handle more current because they have more surface area.
Any one who knows better may correct me, I just ordered an N10 today from Google so my information here is what I have read here and what I know from years in the electronics field..
Click to expand...
Click to collapse
You don't need more current to charge a bigger battery, it's all about how long it will take to charge to full.
Some have stated that they've seen a 3A battery drain with certain games. The 9Ah battery would last approx. 3 hours which exceeds the max rate of the charging circuit and the PS. Even on a fully charged battery at that rate doesn't last that long.
AFAIK for any tablet to be able to draw 2A from any 5V charger (that can supply the needed amperage) the data pins (middle two pins from the use cable) have to be at 2.5V. Otherwise even if the charger is with correct specifications 5V/2A the tablet might not charge at all, or charge at a lower rate.
Sent from my Nexus 10 using Tapatalk HD
I forget the actual brand/model of the actual charging chip but if you poke around in the N10 files you can find it but it's specs are list as 2.5A max but N10's code limits it to 2.1A. This isn't the PS wall wart commonly called the "charger".
The recommended charging current for any lithium ion or lithium polymer is 0.7C. What that actually means is a current 0.7 x max capacity in mAh. For most phones e.g. my Galaxy Note 2 with a capacity of 3100 mAh this means a current at about 1.7A.
The battery Nexus 10, on the other hand, could very well be charged at a whooping 6.3A current.
In USB Battery Charging Specification 1.2 the maximum current a USB port can supply for charging purposes can be as high as 5A.
With the Perseus kernel for Note 2 you can actually specify the max limit for how much current the phone will draw from any charger.
So in theory.. it should be possible to charge the Nexus 10 with a 5V 5-6,3A charger.. and that would probably be very quick!
For the record: I havn't seen many (any?) chargers with more that 2.3A
MartiniGM said:
The recommended charging current for any lithium ion or lithium polymer is 0.7C. What that actually means is a current 0.7 x max capacity in mAh. For most phones e.g. my Galaxy Note 2 with a capacity of 3100 mAh this means a current at about 1.7A.
The battery Nexus 10, on the other hand, could very well be charged at a whooping 6.3A current.
In USB Battery Charging Specification 1.2 the maximum current a USB port can supply for charging purposes can be as high as 5A.
With the Perseus kernel for Note 2 you can actually specify the max limit for how much current the phone will draw from any charger.
So in theory.. it should be possible to charge the Nexus 10 with a 5V 5-6,3A charger.. and that would probably be very quick!
For the record: I havn't seen many (any?) chargers with more that 2.3A
Click to expand...
Click to collapse
Sure the charging rate is way under what it should be but as they use larger and larger capacity cells the only solution is a removable cell to charge by other means.
Hi everyone.
I recently got the Xperia Z and noticed the original charger packs a 1500mAh speed (which got me confused because I thought AMP referred to charging speed), but anyhow. I also bought a power bank (external backup battery) and the thing has 2 ports, 5V 1AMP and another 5V 2.1AMP. So I was wondering if the Z can take the 2.1AMP speed without damaging the battery. What do you guys think?
Thanks.
You won't harm it instantly no. Over time, yes.
The battery lives better if you charge it slowly, I charge mine with 500mA when I go to bed. I'd use the 2ma if you were really rushed.
My Stock charger is 1800mA btw. (Dock)
The phone will automatically limit the charging current (amperage), so the battery won't be charged too fast even if you use a 2A charger. I do not know at what amperage the XZ limits the current, but I suppose it's somewhere around the 1500mA of the standard charger.
On the other hand, charging with very low currents may also damage the battery. I read somewhere that prolonged use of a charger with less capacity than around 0.5c (c=the capacity of the battery; 2330mA) might be bad for the battery. Therefore it isn't recommended to only use the USB port of your computer (500mA).
So, for repeated use over long periods of time, a charger with a capacity of over 1165mA (0.5c) is recommended.
Well I don't know what to believe anymore :x
You can safely charge with almost any trusted-brand MicroUSB charger. As long as it's not broken or a cheap chinese knock-off or anything like that. It will output only as much as the phone will accept.
EDIT: 2.1AMP (as you state it) is 2100mA (milliamperes). That's it's current output. It does not refer to "speed" per se, but a battery will charge faster with a higher output charger. A 1000mAh battery will charge from 0 to 100% in one hour if you use a 1000mA charger. Or in half an hour with a 2000mA charger. That's the theory.
In reality, phones and batteries will have safety circuits that limit the charging current so that the battery won't get damaged. It simply will not charge faster than what's safe. If, say, our XZ is limited at 1500mA, then it won't let in more than 1500mA. No matter if the charger is rated at 1500mA or 2000mA. The phone will, however, accept less than 1500mA, but when the current sinks below a certain limit, the phone won't charge at all. That lower limit might be somewhere around 400mA. If your computer's USB port gives out considerably less than 500mA (which is the norm), then there might be something wrong with the port and the phone won't accept it.
For comparison, the Samsung Galaxy S II won't charge at any higher than 700mA. No matter if you connect it to a 700mA or a 2000mA charger, it will only take 700mA and that's it. The stock SGSII wall charger is 750mA.
The XZ, having a bigger battery, will charge at higher than that. I'm guessing 1400-1500mA because the stock charger is 1500mA.
Don MC said:
You can safely charge with almost any MicroUSB charger. As long as it's not broken or anything.
Click to expand...
Click to collapse
Awesome then, thanks a lot for your help
Let's face it. It's always best to go with the original charger. If you use a non standard charger the best practise is to use one that has a similar amperage. That said, my Power Bank case puts out 1amp via the dock pins, so... And it's made for the Xperia.
Sent from my C6603 using XDA Premium 4.
Ride it like you downhill it.
Hello! I m using a generic 2.5 mAh 5.0v Charger is it going to hurt my Battery or Mobile OR not????
You can use any micro usb charger, kernel will limit the current.
i'm using "generic" (connectIT) dual usb 2.1/3.1A charger without problem...
btw edit the thread name - charger is spelled wrong (just to help other people with searching in the future)
from the first day on my purchases using g2, more than a year.
It's common sense that higher current = more heat = faster li-ion/lipo degeneration. If you occasionally need a 2+mAh charge, it won't really hurt your battery too much. However, for everyday charging, stick with ~1mah in order to preserve your battery. I personally use an 1mah(5w) iphone charger because it's got the cleanest output out of all the readily available chargers. In my car I have a 2.1mah charger in case I need a quick top up.
Fyi, the phone will only draw a max of ~2mah regardless of what charger you use.
stan54 said:
It's common sense that higher current = more heat = faster li-ion/lipo degeneration. If you occasionally need a 2+mAh charge, it won't really hurt your battery too much. However, for everyday charging, stick with ~1mah in order to preserve your battery. I personally use an 1mah(5w) iphone charger because it's got the cleanest output out of all the readily available chargers. In my car I have a 2.1mah charger in case I need a quick top up.
Fyi, the phone will only draw a max of ~2mah regardless of what charger you use.
Click to expand...
Click to collapse
But as stated above kernal will limit the current???
yes the kernel will limit the charging current its ok to stick to any 5v DC charger
touqeer.tx said:
But as stated above kernal will limit the current???
Click to expand...
Click to collapse
Yes, the phone will only draw as much current as it's designed to. You could hook it up to a 50a charger if you wanted and it would still draw less than the 2a limit regardless. The only thing that's important is the voltage which happens to be 5v on nearly all modern phones.
stan54 said:
It's common sense that higher current = more heat = faster li-ion/lipo degeneration. If you occasionally need a 2+mAh charge, it won't really hurt your battery too much. However, for everyday charging, stick with ~1mah in order to preserve your battery. I personally use an 1mah(5w) iphone charger because it's got the cleanest output out of all the readily available chargers. In my car I have a 2.1mah charger in case I need a quick top up.
Fyi, the phone will only draw a max of ~2mah regardless of what charger you use.
Click to expand...
Click to collapse
Hard to believe a word from you considering you can't even get the current unit right. It's amp aka A. Not mAh, which is both wrong in unit and scale (that's milliamp * hour, that's for capacity).
A typical USB BC compliant charger can supply up to 5V 1.5A, of course there are 5V 2/2.1A chargers around.
The charger only limits the maximum power a device can draw, it has nothing to do with the actual charging process if the device can't draw more than said maximum.
As for you your other baseless claims, typical Li-ion based batteries can at least charge at 1C, that is 1000mA=1A (of course this is actual charging current, which is approximately 1.2x the supplied current on a 5V charger) for a 1000mAh battery, 2A for 2000mAh battery and so forth. There's NO such thing as occasional "2+mAh" is safe. 1C is always safe and that actual number is tied to your battery capacity (5V2.5A would be perfectly safe for a 3000mAh/3.8V battery even if the phone actually took that current).
levizx said:
Hard to believe...
Click to expand...
Click to collapse
This is what happens when people can't even read right the charger label.
Val D. said:
This is what happens when people can't even read right the charger label.
Click to expand...
Click to collapse
LoL That's Right