Related
http://forum.xda-developers.com/showpost.php?p=6281726&postcount=1
This cleared up alot of stuff for me and I'm sure it'll help some of you too.
Sent from my SCH-I500 using XDA Premium App
That is good info. Too many people are clueless about how to treat Li-Ion batteries.
One glitch I found:
"10.• Car "fast-chargers" overtime degrade your battery a little, as they give too much energy to the battery too fast (high voltage)."
And he goes on to talk about voltage and even shows a voltage/life chart.
The charge voltage is set by the phone. A PC USB port is 5 volts, a car charger is 5 volts, and a wall charger is 5 volts. The phone then has a converter in it to convert the charge voltage down to the maximum charge voltage. How that is done, is up to the type of phone you have. In fact, on the Fascinate, I have tested it at 4.5 up to 5.5 volts, and the battery charge voltage and current remains the same.
I DO know that the Fascinate detects PC USB ports, and uses a higher charge CURRENT on a wall or car charger, then it does on a PC USB port, but the VOLTAGE maximum is the same.
Basically, he is confusing charge current and charge voltage there.
Very helpfull info. Thanks!
Earlier I was nokia N86 user. Charger of that phone is same like SGS2. I charged my SGS2 with that charger. And I got the feeling that it was faster than original SGS2 charger.
Sent from my GT-I9100 using Tapatalk
Give us some data on charging timers pls.
Details please....
Ok will give it in few days. I'll start calculating it.
Will u need any screen shots? If yes than how I mean is der any way to calculate time directly on phone?
Sent from my GT-I9100 using Tapatalk
i have a nokia n97 mini charger which i use to charge my SGS2. It is indeed faster. But i guess it is because the nokia charger is capable of 1.2 A against only 0.7 A for the Samsung charger. Keep in mind that the voltage is the important number when matching chargers.
Both chargers are 5 V. Having higher A number means the charger is capable of giving out more power (power = V x A), power is energy rate (how much energy per second delivered). That is why Nokia's charger is faster, because it can give enery at a faster rate
fileexit said:
i have a nokia n97 mini charger which i use to charge my SGS2. It is indeed faster. But i guess it is because the nokia charger is capable of 1.2 A against only 0.7 A for the Samsung charger. Keep in mind that the voltage is the important number when matching chargers.
Both chargers are 5 V. Having higher A number means the charger is capable of giving out more power (power = V x A), power is energy rate (how much energy per second delivered). That is why Nokia's charger is faster, because it can give enery at a faster rate
Click to expand...
Click to collapse
The question is: is this gonna waste the samsung's battery?
I'm no battery expert but wouldn't samsung have selected the amp level for a reason??
666fff said:
I'm no battery expert but wouldn't samsung have selected the amp level for a reason??
Click to expand...
Click to collapse
Yes, Price been issuing an (I think 1amp) old htc charger. Not sure I notice a difference in charge speed, though its possible it still helps when running flash, oced etc by helping power the phone more so the battery isn't picking up the slack and can maintain charging without load. And no more amps can't hurt,a load will pull what it needs (more volts WOULD be am issue) Its like a 1200 watt pc power supply to run grandmas pentium computer wouldn't hurt it, just be under utilized. Make sense?
Sent from my GT-I9100 using XDA App
Are you surprised it charges faster? I'm socked that my SGSII charger only throws out 700mA.
What are they playing at giving "travel charger" in the box?
The charge speed is directly related to the current output of the charger in use, as long as the phone is designed to accept a current higher than the lowly 700mA the standard one outputs.
With a 1A charger you should get (in theory) ~43% faster charging, assuming the phone and battery can draw that much current to charge.
Let's hope the phone supports this:
In Battery Charging Specification,[38] new powering modes are added to the USB specification. A host or hub Charging Downstream Port can supply a maximum of 1.5 A when communicating at low-bandwidth or full-bandwidth, a maximum of 900 mA when communicating at high-bandwidth, and as much current as the connector will safely handle when no communication is taking place; USB 2.0 standard-A connectors are rated at 1.5 A by default. A Dedicated Charging Port can supply a maximum of 1.8 A of current at 5.25 V. A portable device can draw up to 1.8 A from a Dedicated Charging Port. The Dedicated Charging Port shorts the D+ and D- pins with a resistance of at most 200 Ω. The short disables data transfer, but allows devices to detect the Dedicated Charging Port and allows very simple, high current chargers to be manufactured. The increased current (faster, 9 W charging) will occur once both the host/hub and devices support the new charging specification.
Click to expand...
Click to collapse
Would make charging insane.
I didnt understand whatever kani has quoted.
Plz somebody tell me is it safe to charge or not?
Sent from my GT-I9100 using Tapatalk
Havent done any test but my old blackberry charger, charges the phone faster. Anything is faster than the stock charger.
Sent from my GT-I9100 using XDA App
Hmm im interested in this thread, somebody with an electrical background should chime in on if its totally safe or not to use a charger with more current output.
I don't know if you european guys have different chargers than us, this is what mine reads.
input 100-240v- 50-60hz 0.15a
Output 5.0v 1.0A
unleashed12 said:
Hmm im interested in this thread, somebody with an electrical background should chime in on if its totally safe or not to use a charger with more current output.
I don't know if you european guys have different chargers than us, this is what mine reads.
input 100-240v- 50-60hz 0.15a
Output 5.0v 1.0A
Click to expand...
Click to collapse
Mine says
"Input 100-240v- 50-60hz 0.15A
Output 5.0v 0.7A"
So yes, guess we do have different chargers
So i guess then NA has the theoretical 50% higher charging rate @ 1.0 A that one other guy was mentioning earlier; i was wondering because i really feel that my charge time on this phone isn't slow at all. Was looking to possibly make it faster even
Me too i saw a quickly charge with n97 charger.
But, with the original one, you gain like 1/2 hours of autonomy.
Quick charger = less time to charge the buttery but less time on battery
Slow charger = more time to charge buttery but more time of autonomy
The best should be charging the phone in offline mode using the computer
Mine says
Input : 150-300vac
50 - 60Hz 0.15A
output :5.0V 0.7A
Sent from my GT-I9100 using Tapatalk
And On nokia charger
Input : AC100-240V/50-60HZ/160mA
output: DC 5.0V/1200mA
Sent from my GT-I9100 using Tapatalk
I think it should be fine, i used another charger on my old HD2 for most of the time i had it (a year and a half) after i lost the original and never had any issues.
So can someone give a list of what chargers would charge the phone faster than the one that came with it.
thanks
The phone apparently limits the charging current to 650mA no matter the charger. Not sure I'd want to be the one testing increasing the cap though
http://forum.xda-developers.com/showthread.php?t=1132649&highlight=Charging
★★★This topic is for them who are having problems with stock charger and cable. If you don't have any problems, ignore this ★★★
Well, since I purchased my Note 2, I kept facing this slow charging problem. Now what is slow charging some of you will ask? Well, it's simple. The device is taking more than normal time for charging. Now how do you know the default/should be rate for charging? Simple again. The AC adapter clearly says output rate as 2000 mA or 2.0 A. So with that calculation Note 2's monstrous 3100 mAh should be fully charged with 2 hours. But as we've seen steady 2.0A is not the output case in some/many scenario, so add another 30 mins to it. So whatever it is, from 0-100%, the device shouldn't take more than 2 hours 30 minutes.
And for me, it was taking around 5 hours! Sometimes 4 hours 30 minutes, and if it's very fast then 4 hours. Well I was never gonna wait 4 damn hours before going to my office and irritate myself, and I don't have the habit of charging overnight, unless I absolutely need it.
So I kept calling my retailer, asked for replacement, and they did, well, you won't believe, they replaced three times actually, so I had three different Note 2, with three different charger. Well, each of them acted absolutely fine at first 3-4 charge, then the problem was back again and again. I in fact turned off the device and put it into trash once.
Then I thought let's try some different USB cables, I tried my friend's Galaxy Ace cable. Charging current kept fluctuating between 1000-1200 mA. Which was better than those faulty stock cables, which provided steady 900 mA. Sometimes it even was detecting the AC current as USB, which would provide a mere 460 mA and would take God knows how long! Then I found my piece. I went to my retailer, frustrated and angry, asked them to give me the thickest and shortest possible cable, and they provide me one from a Samsung phone's box, but I can't recall which device was that! And then I sat there for half an hour, kept plugging and unplugging, and the current rate was rock steady at 1800 mA. I took it, paid just 10$ and came back.
Since then I have charged my phone almost 10 times and the current rate never went below 1800 mA / 1.8 A.
This is the cable I am using, do notice that it has 5 pin set up against stock cable's 4 pi, if that matters in any way, and it's about 10% thicker than the stock cable and also about 9" shorter.
And how will you monitor the charging current, three ways are there,
1- Battery Monitor (yet I don't know how to exactly use it)
2- If you are rooted (which is a must anyway), then just go to, /sys/class/power_supply/battery/current_avg
3- Use the app from the link below. It basically reads the current value just exactly as above but it saves the time to go into that file every time. A big thanks to Deadvirus.
Galaxy Charging Current application's apk can be found here:
http://forum.xda-developers.com/showpost.php?p=36124435)?
Play Store link: (Paid)
https://play.google.com/store/apps/...S5hYm1hbnRpcy5nYWxheHljaGFyZ2luZ2N1cnJlbnQiXQ..
Thanks to this post and it's poster for informing us about the current output reading path,
http://forum.xda-developers.com/showpost.php?p=33585646&postcount=31
The included cable charger that mine came with charges fast like that, I let it charge slow with standard USB port overnight, but the included charger nd included cable should achieve this. The cable is important.
kebabs said:
The included cable charger that mine came with charges fast like that, I let it charge slow with standard USB port overnight, but the included charger nd included cable should achieve this. The cable is important.
Click to expand...
Click to collapse
Same here, it's done within about 2 hours every time, from ~1%. Something definitely must have gone wrong with yours :s
R: [SOLUTION] Slow Charging!
You are amazingly right. Every charger/cable combo I test seems to deliver different currents, according to the app you posted, ranging from 600 to 1300 (mA?).
Didn't know that could happen. Now I am looking for the Holy Grail of chargers, too.
After some tests: original chargers of Note 2 and Tab provide 1800 mA; no-brand Chinese labeled 1500 gives 1400; one Nokia labeled 1200 gives 1300, another, labeled 1200, gives 1200. Puro brand, labeled 2100, gives 1100. Another Chinese, no-brand, labeled 2000, double usb, gives 1100 per socket. Other no-brand samples give 600 or 300 mA.
Enormous variability.
Think I'll use the 1800 mA Samsung for when I'm out, and the good Nokia's for overnight charging when home.
Sent from my GT-N7100 using xda premium
And I ve been wondering why the heck original cable is too short. I thought samsung were just tight gits. Cable is mot even long enough to reach feom the wall to bed side table
Sent from my GT-N7100 using xda app-developers app
no problem whatsoever with mine , charging from 1 to 100 % in about 2 - 2:10 hours
Thank you for nice explanation! Now it's much clearer.
For me...
Stock charger + stock short cable (0,9 m) = ~2+ hours
Stock charger + some other cable (1,8 m) = ~4+ hours
,don't know about thicknes. Mb stock cable is thicker, or at least harder to bend.
Sent from my GT-N7100
Thanks for the APK, I found a huge variance in charging rates based on a combination of chargers and cables. Goes to show that the cable makes a huge difference. Here's my findings:
** Stock Charger (2A):
w/Stock Cable (4-pin) - 1698
w/Cable from another phone (5-pin) - 1698
w/Cable from battery pack (5-pin)- 1698
w/generic eBay cable (4-pin)- 100! - It didn't charge at all, even with screen off.
** iPhone Charger (1A):
w/Stock Cable (4-pin) - 1300
w/Cable from another phone (5-pin) - 1100
w/Cable from battery pack (5-pin) - 1300
w/generic eBay cable (4-pin) - 100!
** Car Charger (1A):
w/another generic eBay cable - 490
(Was running Redpill kernel, not sure if that has fast charging built in which might affect results).
The app is really helpful. Been wondering what the charging current was on different chargers.
I measured it using the app based on current AVG and not current NOW. This is because I used a 800ma blackberry charger and yet current now shows 1698 which is impossible.
The app will tell you which cables and chargers are good. I was shocked that out of my 8 cables only 3 gave an average of more than 1000, the rest give around 800 or less.
Sent from my GT-N7100 using Tapatalk 2
Hi!
So, the AC adaptater mentionne 2A but it doesn't mean that your devuce consume 2A... It means that the AC adaptater can provide 2A under 5V.
If a load need to consume 500mA the adaptater can provide enough power. But if it needs more than 2A, the ouput current will be at the 2A max but your voltage will decrease (it means that you have a device problem!).
The only thing to do is to refer to the user manual of device.
One thing more, the USB protocole fix the maximun current to 1A!
An other thing, if you want to have a better battery life it recommended to charge your battery slowly. Just have the habit to charge it during the night.
See ya.
Sent from my GT-N7105 using xda app-developers app
I also got an lg very thick cable..which is also 5 pin and let me tell it charges REEEEAAAALLLLYYYY FAST..when seen in application posted in op(thanx) it shows 1800..but the problem is if I detach charging before battery full notification then the battery is consumed at very high rate..I.e battery life decreased or maybe shows fake battery percentage. .and if I go for full charge it takes half hour more after 100% to show battery full in notification. .
Sent from my GT-N7100 using Tapatalk 2
lucier said:
Hi!
So, the AC adaptater mentionne 2A but it doesn't mean that your devuce consume 2A... It means that the AC adaptater can provide 2A under 5V.
If a load need to consume 500mA the adaptater can provide enough power. But if it needs more than 2A, the ouput current will be at the 2A max but your voltage will decrease (it means that you have a device problem!).
The only thing to do is to refer to the user manual of device.
One thing more, the USB protocole fix the maximun current to 1A!
An other thing, if you want to have a better battery life it recommended to charge your battery slowly. Just have the habit to charge it during the night.
See ya.
Sent from my GT-N7105 using xda app-developers app
Click to expand...
Click to collapse
Yes, the stock charger doesn't provide full 2A current.
And is it true that if the device is charged slowly the battery backup will be better? I mean that would be good then. I'll try that, thanks for informing.
sumeshd said:
I also got an lg very thick cable..which is also 5 pin and let me tell it charges REEEEAAAALLLLYYYY FAST..when seen in application posted in op(thanx) it shows 1800..but the problem is if I detach charging before battery full notification then the battery is consumed at very high rate..I.e battery life decreased or maybe shows fake battery percentage. .and if I go for full charge it takes half hour more after 100% to show battery full in notification. .
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
On my old cable, the damaged stock one, it'd take half an hour to reach 100% from 99. With this one it takes 5-6 mins.
This whole charging process is complicated that much I can say.
'Swyped' from my GT-N7100
Unfortunately I got a grey import so my stock charger was for a different country.
I'm having to use a 1.0A charger instead.
It still only takes a few hours to charge though. I sleep for 4-5 hours and it's always fully charged when I wake up.
Sent from my GT-N7100 using xda app-developers app
Hmm is this a accurate way of measuring amp?
I was using same cord and the apk provided above, using the default 2amp charger says 1697 and using a bellkin in charger rated at 1amp,says the same thing?
Hmm
I am a bit confused, which of the following is my actual charging rate? The charge is really slow, around 15% per hour or so.
Sent from my GT-N7100.
Those who help noobs go to heaven. True story.
As I stated in the screenshot, you shouldn't look at current_now, it'll always be same, 1698, you should look at current_avg.
'Swyped' from my GT-N7100
Damn. That means it's time for me to get a new charger, isn't it?
Just switched to a very old 0.7 A output charger my father uses on his primitive samsung device. It gives better results than my stock charger/USB cable, provided by samsung. 800 mA on a 700 mA charger. How is that even possible?
Sent from my GT-N7100.
Those who help noobs go to heaven. True story.
SacGuru said:
I am a bit confused, which of the following is my actual charging rate? The charge is really slow, around 15% per hour or so.
Sent from my GT-N7100.
Those who help noobs go to heaven. True story.
Click to expand...
Click to collapse
are using stock cable ?
yahyoh said:
are using stock cable ?
Click to expand...
Click to collapse
Yeah I am. The stock charger says 2A, 5V. When used with the stock cable it charges at a mere 200-400 mA. I used the wall charger of an old samsung phone (doesn't have a usb cable, just a wall charger) and current rises to 800mA. Where can I buy a good USB cable at in the UK?
Sent from my GT-N7100.
Those who help noobs go to heaven. True story.
I have buy a new stock charger because I was thinking my stock one was dead (slow charging / usb mode)...
But in fact it's not my stock charger who is defected but it's just the cable!!!
Just try with another cable and it's OK (AC mode).
Thanks for the apk!
Hi all,
Ok, so I finally managed to order a 16Gb Nexus 4 and hopefully it will be with me in 1 week or so.
And I was wondering one thing regarding the AC adapter: I believe (pls correct me if I am wrong) that the original AC adapter’s output voltage is DC 5V, 1.2A.
I will need an extra AC adapter to keep it at work and I was planning to use one of those:
- The Sony Xperia P AC adapter will output 5V, 1,5A
- The Samsung Galaxy S AC adapter will output 5V, 0,7A
It is clear that neither of those 2 chargers will match exactly the specifications of the original Nexus charger (same voltage, but different amperage).
So, here goes the questions:
1) Is there any problem if I use a charger that will output the same voltage but with different amperage?... if not, which one would you use and why?.
2) how the amperage affect to the charging process?.
Thanks all in advance
PS: sorry for terrible English
You can use any charger up to 2 amps.
Sent from my Nexus 4 using xda app-developers app
Evergreen74 said:
Hi all,
Ok, so I finally managed to order a 16Gb Nexus 4 and hopefully it will be with me in 1 week or so.
And I was wondering one thing regarding the AC adapter: I believe (pls correct me if I am wrong) that the original AC adapter’s output voltage is DC 5V, 1.2A.
I will need an extra AC adapter to keep it at work and I was planning to use one of those:
- The Sony Xperia P AC adapter will output 5V, 1,5A
- The Samsung Galaxy S AC adapter will output 5V, 0,7A
It is clear that neither of those 2 chargers will match exactly the specifications of the original Nexus charger (same voltage, but different amperage).
So, here goes the questions:
1) Is there any problem if I use a charger that will output the same voltage but with different amperage?... if not, which one would you use and why?.
2) how the amperage affect to the charging process?.
Thanks all in advance
PS: sorry for terrible English
Click to expand...
Click to collapse
You must use a 5V AC USB Adapter and better no LESS than 1A
for Fast Charge.
AC Adapter I Use:
iPad AC Adapter 5V 2.1A at Work
PlayBook AC Adapter 5V 1.8A at Home 1
Original Nexus 4 AC 5V 1.2A at Home 2.
Our Nexus 4 will Draw around 0.8A when Batt lever at 0% - 80%,
then around 0.5A at 80%-95%, Final State 95%-100% will draw 0.2A roughly.
When 100%, Nexus 4 will use the AC power & the Current "A" show on phone
will like 2mA (0.002A) when idling.
** 1A = 1000mA
As previous poster said, do not go under 1.2amp.
I run the OEM charger in my bed room, a USB charger to my computer, and a 2.1amp charger in the car.
Sfkn2 said:
As previous poster said, do not go under 1.2amp.
I run the OEM charger in my bed room, a USB charger to my computer, and a 2.1amp charger in the car.
Click to expand...
Click to collapse
Why do you say not to go under 1.2A? Charging from a laptop is at .5A. I've been using a 1A charger since day one. Haven't experienced any issues with it.
Charging at a lower amperage shouldn't hurt anything, just charge slower. All you have to do is make sure it's a 5V charger. Amperage shouldn't matter but a lower amp charger will charge slower. As for a higher amp charger, the phone will only draw the amount of power it needs to charge so using 2A charger won't hurt anything either.
Also 2mA is 0.002A not 0.02 A
wilsonlam97 said:
You can use any charger up to 2 amps.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Since the charger doesn't actually regulate the charging itself (the phone does this) it doesn't matter how many amps it can supply, could be 100 amps, no worries. As long as it is 5V, the phone will draw as many amps as it needs.
Since the supplied charger is 1.2A rated, it's fair to assume that the phone will never actually try to draw any more than that, so there will be no benefit in going higher.
Going for a lower current charger will likely extend the charge time.
I use a 2.1 amp daily without any issues.
Sent from my Nexus 4 using Tapatalk 2
Wow guys!!... thanks all for your answers!!
So, if I understood correctly, the amperage will only affect to the charging time, meaning that by using the Xperia P AC adapter (1,5A) the battery will be charged faster that using the Galaxy S one (0,7A)... right?
Pls allow one last question: a few yeard ago, I think I read in some forums that a slower charging process could help to keep the batteries in the best conditions for a longer time... is this still true with modern batteries??
Again, THANKS all for your help!!
Evergreen74 said:
Wow guys!!... thanks all for your answers!!
So, if I understood correctly, the amperage will only affect to the charging time, meaning that by using the Xperia P AC adapter (1,5A) the battery will be charged faster that using the Galaxy S one (0,7A)... right?
Pls allow one last question: a few yeard ago, I think I read in some forums that a slower charging process could help to keep the batteries in the best conditions for a longer time... is this still true with modern batteries??
Again, THANKS all for your help!!
Click to expand...
Click to collapse
Yes, the .7A charger will take a little longer to charge you phone.
On the other answer, I think NO but I'm not as familiar with LiPo batteries. I would venture to say that .7A vs 1.2A (max the phone will draw but I think someone above mentioned it's even less than that when the battery is very low) is not going to make a bit of difference in your battery life.
One thing I do know about LiPo's is you do not trickle charge them. So while plugged in it will charge at the rates mentioned above until full and then it QUITS charging all together. Once the phone discharges the battery to a certain level, it will charge it back up again. Probably at 98-99%.
There may be one other thing to consider when selecting a third party charger. In the Nexus 7, the device looks for pins 2 & 3 (data) of the USB plug to be shorted in order for it to draw full current. If this pins are open (or have a load across them as is the case with iPhone/iPad chargers), the Nexus 7 will assume it is plugged into a computer and limit its draw to 500MA.
Not certain the Nexus 4 behaves the same way but would assume so.
setzer715 said:
Yes, the .7A charger will take a little longer to charge you phone.
On the other answer, I think NO but I'm not as familiar with LiPo batteries. I would venture to say that .7A vs 1.2A (max the phone will draw but I think someone above mentioned it's even less than that when the battery is very low) is not going to make a bit of difference in your battery life.
One thing I do know about LiPo's is you do not trickle charge them. So while plugged in it will charge at the rates mentioned above until full and then it QUITS charging all together. Once the phone discharges the battery to a certain level, it will charge it back up again. Probably at 98-99%.
Click to expand...
Click to collapse
setzer715, thanks for the answer... I think I will be using the Xperia P charger at work...
Thanks all for your help!!
I want to make this case clear. According to my Charging log,
Here is some key point.
Nexus 4 Max Draw Rate at Fast Charge Mode is around 800-900mA,
even you use a Charger that rated at 1A (iPhone Tofu), 1.2A (Original),
1.8A (Playbook), 2.1A (iPad).
Fast Charge Mode must be with Charging Cable with 2&3 pin Shorted,
or the charger itself have the 2&3 pin already shorted.
Therefore, 1A is a Sweet spot for getting Charger & Charging Time for
Li-Po/Li-Ion/Ni-MH Batt charging.
If you use under 1A Charger, eg 700mA or 500mA, it will take much longer
to charge the batt but no harm as well. Just too slow only.
The stock charger that came with my phone sucks, I use one from my epic 4g touch (gs2)and it charges much better
DEVICE: Nexus 4
KERNEL: Franco r95
ROM: PROJECT Extinct Life Event
jlear3 said:
The stock charger that came with my phone sucks,
Click to expand...
Click to collapse
Why you say so...? What's wrong with it...?
Talon88 said:
Why you say so...? What's wrong with it...?
Click to expand...
Click to collapse
Left a phone on a charger all night with a long (10ft) cable and it couldn't even charge the phone over night. I know a 10ft cable will slow things down but my gs2 plug has no problem charging my phone. Search around and you'll find a few fail stories about the stock LG charger.
Sent from my Nexus 4 using Tapatalk 2
hello;
i have just bought LG G2 (F320L), i have noticed that if i charge the phone with a charger having 1amp output specification it charges rapidly.
So the question is that what charger output specifuication is best for Lg G2 which may charge the phone rapidly but does not damage the battery.
U can use a 16a charger if u want. The charging circuits in the phone handles the input so max the phone will use is 1.6a. It's li-po cells the phone has som advance circuits handling the balance charging of the cells. Recommended is 2a charger but don't forget the cable.
If u use a chappy cheap cable it won't go above 0,3a use a premium and u whill have a 1.6a charge. 1a is to little and to slow.
The phone handles the power to optimize the charging so don't be afraid to use a powerful charger just make sure it's 5v and above 1.6a. If u bye a 1.6 the charger itself will be on max load and generate a lot of heat with could damage the charger and the phone so go with 2a and a premium cable
I'm pretty sure the post above's first reference was meant to say 1.6A and not 16a (the second reference was corrected). 16A wouldn't necessarily hurt the phone actually since current aka amperage is pulled and not pushed - the device would still only take what it needs as long as the 5VDC is solid.
Anyway, enough rudimentary electronics and electrical theory...
Any modern USB wall charger will work with the G2 without issues, obviously if you can get and use one that provides a higher level of amperage/current it will charge the G2 faster up to about 1.6A as mentioned above. The factory charger included with G2 smartphones is designed to provide 1.8A but the G2 won't necessarily pull that much - the .2A is a little headroom and the charger doesn't "stress" as much to provide the 1.6A.
Lower amperage/current chargers just mean it takes longer to charge the G2, basically. As it has a 3,000 mAh (that's 3A for the record) that basically means with a 1.6A charger attached and the device powered off and charging exclusively you'll get a full charge in just under 2 hours from a near-empty state - if there's a charge on it already then it'll charge at roughly 1% every 2-3 minutes, maybe a touch more if the G2 is powered on and charging.
Either way, again, any modern charger will be fine. Try to get at least a 1A model from whoever, and avoid really cheap ones that can't do 1A minimum. If it's a brand name charger (Apple, Samsung, LG, Motorola, BlackBerry, etc) you'll be fine.
maydayind said:
U can use a 16a charger if u want. The charging circuits in the phone handles the input so max the phone will use is 1.6a. It's li-po cells the phone has som advance circuits handling the balance charging of the cells. Recommended is 2a charger but don't forget the cable.
If u use a chappy cheap cable it won't go above 0,3a use a premium and u whill have a 1.6a charge. 1a is to little and to slow.
The phone handles the power to optimize the charging so don't be afraid to use a powerful charger just make sure it's 5v and above 1.6a. If u bye a 1.6 the charger itself will be on max load and generate a lot of heat with could damage the charger and the phone so go with 2a and a premium cable
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thank u for quick reply...
br0adband said:
I'm pretty sure the post above's first reference was meant to say 1.6A and not 16a (the second reference was corrected). 16A wouldn't necessarily hurt the phone actually since current aka amperage is pulled and not pushed - the device would still only take what it needs as long as the 5VDC is solid.
Anyway, enough rudimentary electronics and electrical theory...
Any modern USB wall charger will work with the G2 without issues, obviously if you can get and use one that provides a higher level of amperage/current it will charge the G2 faster up to about 1.6A as mentioned above. The factory charger included with G2 smartphones is designed to provide 1.8A but the G2 won't necessarily pull that much - the .2A is a little headroom and the charger doesn't "stress" as much to provide the 1.6A.
Lower amperage/current chargers just mean it takes longer to charge the G2, basically. As it has a 3,000 mAh (that's 3A for the record) that basically means with a 1.6A charger attached and the device powered off and charging exclusively you'll get a full charge in just under 2 hours from a near-empty state - if there's a charge on it already then it'll charge at roughly 1% every 2-3 minutes, maybe a touch more if the G2 is powered on and charging.
Either way, again, any modern charger will be fine. Try to get at least a 1A model from whoever, and avoid really cheap ones that can't do 1A minimum. If it's a brand name charger (Apple, Samsung, LG, Motorola, BlackBerry, etc) you'll be fine.
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thank u for making it clear,
is there any way to measure output of any charger?
i know its not related here but just for fun.:laugh:
currently i am charging my G2 with 1A charger but it takes so long to reach 100% charge, may be about more than 4 hours.
Actually I meant 16a.... Just get a 2a charger and not a cheap one.. Expect to pay 20$
maydayind said:
Actually I meant 16a.... Just get a 2a charger and not a cheap one.. Expect to pay 20$
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hmm.. u are right.
one should go for original branded charger not chinese one..:laugh:
askfriends said:
hmm.. u are right.
one should go for original branded charger not chinese one..:laugh:
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Once I ordered a 2a charger from China.. Output was 200mah and it almost melted. 2$
U can measure how mouth the charger provide.
Easy way is to use a app in you phone. But not 100% accurate.
Hard and accurate way is to use a USB extender cable that u cut the + cable and use a ampere meter. But u have to use a high end cable for that and u don't want to cut a perfect god cable in half
So I recommend this app https://play.google.com/store/apps/details?id=com.manor.currentwidget
maydayind said:
Once I ordered a 2a charger from China.. Output was 200mah and it almost melted. 2$
U can measure how mouth the charger provide.
Easy way is to use a app in you phone. But not 100% accurate.
Hard and accurate way is to use a USB extender cable that u cut the + cable and use a ampere meter. But u have to use a high end cable for that and u don't want to cut a perfect god cable in half
So I recommend this app https://play.google.com/store/apps/details?id=com.manor.currentwidget
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thank u so much for this tip, i am going to test it now..