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Like many of you guys, I have custom built my own PC. Yeah, it's a little outdated with a Q6600 but it will do for a good year or two more. Good thing I bought a Quad Core. But anyways, getting back to topic, you guys should realize that the Power Output of the front two USB ports are not the same as the USB ports that are in the back. This is a fact as far as my system is concerned. I know because I use a Lacie External drive which will only power on with the rear USB ports.
If you charge the SGS with the included wall charger, it will charge up in about 4 hours. When I leave it on my front USB port, I would wake up in the morning only to find it 60-70 percent full.
PS - I am amazed by the battery of this thing. Here is the break down. I fully charged by 1am. Took it off... then started using it quite a bit till around 3am ish. When I went to bed, the charge was at 72 percent. I work up 6 hours later and guess what, it was at 69 percent. Pretty neat.
The USB 2.0 only requires that a motherboard provides 150mA to a single port (& 500mA to 5 ports). Where as a chargers don't conform to this standard and provides a much higher charge, which charges your battery much quicker.
Only use USB if you have nothing esle.
The wall charger that came with the SGS is a 700mA. I just ordered a 1000mA wall and car charger.
The more I use this phone the more I am amazed by it. The Battery life on this thing is really great. It's already been close to 12 hours (11:30) and the battery is now finally at 49%
I've used this phone quite a bit and the battery held up really well. I used Let's Golf, Navigation, Armored Strike, Calls, Texts, Gmail... Good stuff.
So your telling me if i get a charger with more mA it will charge faster? Where can i get a bigger mA charger.
I don't know, but my battery charges fast as hell. It goes up about 5% in 20 minutes.
mystycs said:
So your telling me if i get a charger with more mA it will charge faster? Where can i get a bigger mA charger.
Click to expand...
Click to collapse
Yes.
Mono Price is great.
Car charger (1000mA)
http://www.monoprice.com/products/p...=10826&cs_id=1082602&p_id=3523&seq=1&format=2
Wall charger
http://www.monoprice.com/products/p...=10311&cs_id=1031106&p_id=6767&seq=1&format=2
then pic a cord length
http://www.monoprice.com/products/subdepartment.asp?c_id=103&cp_id=10303&cs_id=1030307
Ebay has tons also, just search and look at the specs. You want to make sure it says 1A or 1000mA
BigWorldJust said:
I don't know, but my battery charges fast as hell. It goes up about 5% in 20 minutes.
Click to expand...
Click to collapse
5% in 20mins, that's 15% per Hr, or 6.5 hrs from empty to full. You are happy with about 6.5 hrs for a full charge?
SykesAT said:
5% in 20mins, that's 15% per Hr, or 6.5 hrs from empty to full. You are happy with about 6.5 hrs for a full charge?
Click to expand...
Click to collapse
LOL , kids today are inept when it comes to arithmetic but cmon...
Aight more like 10% every 20 minutes, lol. I didn't know this was a math class, sorry. It is the summer you know -_________________________________-.
will it hurt the battery life or shorten the amount of time you can use the battery if you use a higher mA? because if it wont then why didnt Samsung just include a 1000mA charger with it?
alecjake said:
will it hurt the battery life or shorten the amount of time you can use the battery if you use a higher mA? because if it wont then why didnt Samsung just include a 1000mA charger with it?
Click to expand...
Click to collapse
It will do neither.
read this. Gives some basics on Li-ion batteries. link
Essentially these batts can and should be charged at 1C c=capacity. Our batts are 1500mA so we could and should charge at 1500mA.
Slower charging is fine but these batteries rely on circuitry recognizing a drop in voltage to turn the charge off, or down to a lower current as to not damage the battery. If you charge at a higher rate the drop in voltage is more obvious than with a lower voltage and harder to miss thus less chance of an overcharge and battery damage. Added bonus is the battery charges quicker
Over charging is the killer of batteries. Overcharge occurs more from circuitry missing a change in voltage and failing to terminate.
Hope this helps.
alecjake said:
will it hurt the battery life or shorten the amount of time you can use the battery if you use a higher mA? because if it wont then why didnt Samsung just include a 1000mA charger with it?
Click to expand...
Click to collapse
If you were an engineer and could save the company one cent, how would you do it? That was about one cent worth of cooper in the charger times ten million devices.you just made your year end bonus.
A dedicated chip inside the phone regulates the battery charge.
SykesAT said:
Yes.
Mono Price is great.
Car charger (1000mA)
http://www.monoprice.com/products/p...=10826&cs_id=1082602&p_id=3523&seq=1&format=2
Wall charger
http://www.monoprice.com/products/p...=10311&cs_id=1031106&p_id=6767&seq=1&format=2
then pic a cord length
http://www.monoprice.com/products/subdepartment.asp?c_id=103&cp_id=10303&cs_id=1030307
Ebay has tons also, just search and look at the specs. You want to make sure it says 1A or 1000mA
5% in 20mins, that's 15% per Hr, or 6.5 hrs from empty to full. You are happy with about 6.5 hrs for a full charge?
Click to expand...
Click to collapse
I just visited the links you put up and chatted with the live chat team and they have no cables currently for the vibrant ?
where did you find it on the site
thanks
HOw many mA is the charger the phone came with?
leechdweler said:
I just visited the links you put up and chatted with the live chat team and they have no cables currently for the vibrant ?
where did you find it on the site
thanks
Click to expand...
Click to collapse
all you need is a USB - Micro USB cable.
mystycs said:
HOw many mA is the charger the phone came with?
Click to expand...
Click to collapse
700 mA. See the info panel on the charger, it'll tell you.
So a charger with more mA will charge my phone faster i assume? I wont loose any battery capicaty right? It wil charge the same amount just faster i assume?
mystycs said:
So a charger with more mA will charge my phone faster i assume? I wont loose any battery capicaty right? It wil charge the same amount just faster i assume?
Click to expand...
Click to collapse
Its obvious you didn't even bother reading 6 POSTS up. This thread isn't even a full 2 pages, stop being lazy.
So I bought my car charger (cigarette adapter + separate usb cable) from
"Mono Price".
Specs:
PID:3523 Car Charger (Cigarette Lighter) to USB Female Converter - Black
PID:5139 USB 2.0 A Male to Micro 5pin Male 28/28AWG Cable - 10ft
Very weird thing is happening, instead of charging my phone it drains it .
The battery icon moves back and forth as if it is charging but it drains my battery relativity fast.
5 mins using the car charger I lost 25% of battery life .
Does anyone know why this is happening ?
boodies said:
The more I use this phone the more I am amazed by it. The Battery life on this thing is really great. It's already been close to 12 hours (11:30) and the battery is now finally at 49%
I've used this phone quite a bit and the battery held up really well. I used Let's Golf, Navigation, Armored Strike, Calls, Texts, Gmail... Good stuff.
Click to expand...
Click to collapse
How...? I am on my third Vibrant and i last 6-7 hours...
Looking for a "safe" range here..
I downloaded CurrentWidget to see how much current the phone is drawing while using various charging methods.
So:
- using the stock charger at home w/ a 10' usb cable (recommended from a site by many on xda) it hovers around 160 mA - charges slowly, but charges.
- using my computer w/ the stock cable it fluctuates between high-200 mA - mid-400 mA.
- using the stock charger at work w/ the stock cable it fluctuate between mid-400 mA up to high-800 mA AND the phone reaches 115-degrees from around 87-degrees in a few minutes! On top of that, it charges VERY quickly, however, sometimes, even though it says 'charging' the battery % is actually going down! As if all that power is draining the battery!
- using a car charger left over from my old, old Treo 800w, it fluctuates between mid-400 mA and mid-600 mA (temp always normal).
So my question is: what is a safe range for the current to be drawn at and why does the stock charger/usb cable seem to chaotic at times?
I don't really know much about electricity and currents and all that so if I'm using the wrong terminology, forgive me..
Thanks!
Three reasons for the current to fluctuate:
1. Current widget may not be accurate
2. Background processes may be eating some of the charge being supplied- especially radio signal fluctuations
3. The battery will resist charge as it fills causing the charge current to be reduced.
Also, HTC and many other vendors use the usb pins to determine whether you are connected to a charger that can supply sufficient power, usb is rated at only 500ma,while the charger can supply up to 1000ma.
(For reference, the ipad charges at 2A).
I don't think it's necessarily a bad thing to charge at a high rate, since its common practice. In fact, folks have reported that the battery level goes down when using google navigate without a high power charger.
Finally, the Evo has an overheat circuit that will cutoff charge if the battery gets too hot.
Sent from my PC36100 using XDA App
This is interesting. My guess on the reboot issues is that it seems similar to how a computer acts when capacitors start pooping due to heat.
I always let my phone charge 8 hours while I sleep.
If it gets up to 115 degrees and stays there for 8 hours, that could maybe cause damage???
Thanks, I'll keep that in mind. Today, it's been working fine. It's an on-and-off thing... Oh well, long as my phone doesn't start to melt I guess I'm fine.
typeadam said:
Looking for a "safe" range here..
I downloaded CurrentWidget to see how much current the phone is drawing while using various charging methods.
So:
- using the stock charger at home w/ a 10' usb cable (recommended from a site by many on xda) it hovers around 160 mA - charges slowly, but charges.
- using my computer w/ the stock cable it fluctuates between high-200 mA - mid-400 mA.
- using the stock charger at work w/ the stock cable it fluctuate between mid-400 mA up to high-800 mA AND the phone reaches 115-degrees from around 87-degrees in a few minutes! On top of that, it charges VERY quickly, however, sometimes, even though it says 'charging' the battery % is actually going down! As if all that power is draining the battery!
- using a car charger left over from my old, old Treo 800w, it fluctuates between mid-400 mA and mid-600 mA (temp always normal).
So my question is: what is a safe range for the current to be drawn at and why does the stock charger/usb cable seem to chaotic at times?
I don't really know much about electricity and currents and all that so if I'm using the wrong terminology, forgive me..
Thanks!
Click to expand...
Click to collapse
rule of thumb is to not supply the battery more than 70% rate of current of the battery's capacity. for instance, if the battery's capacity is 1000mAh, the charger should not exceed a charge rate of 700mAh.
imo, the stock charger is a tad too fast (1000mAh/1500mAh = 67%). i hardly ever use the stock charger and charge either via usb (~500mAh) or an external charger i bought on ebay rated at 800mAh. a slower charge also provides a more quality charge and will extend the charge as well as the life of the battery. the faster a battery charges, the hotter it will get. heat is the enemy with batteries.
try charging with just usb for a couple days and i guarantee you will see an increase in battery life (all other things constant of course). better yet, pick up an external charger off ebay and get even better results - even more quality charge since it is not discharging and charging at the same time. i strictly use an external charger and can hang on to 100% for over 4 hours w/o use.
Hello folks, I am very concerned with my HTC HD2 as it takes like over 4 hours to fully recharge the battery. I have got this HD2 from the market here on XDA and it works very good overall, except for this problem when recharging it. I thought it was the charger and I have tried many usb to wall chargers even the the iPhone's 4 one, but nothing has changed.
I have also tried several roms and kernels but nothing has changed on this side as well. I wiped everything and put back win mobile 6.5 T-mobile stock rom, but hey, no difference here too..
I am wondering if there might be something wrong with the phone itself or can it be the battery going in holiday???....
How can I figure this out???
I have downloaded Battery Doctor from the market and it says the battery is in good health, and I get up to 14 hours with a full charge with mytouch 4G rom and kernel rafpigna 1.7 cpu 1.3Ghz OC.
Is anyone else experiencing the same problem ??? do you guys have any suggests ???
This problem is driving me really crazy...
Get a new battery, mine only takes 2 hours when completely dead.
mattfmartin said:
Get a new battery, mine only takes 2 hours when completely dead.
Click to expand...
Click to collapse
You think is the battery?? but I get up to 14 hours of usage, I am not sure if its that good though, but I heard this phone is a sucky battery, and anyways why Battery doctor says the battery is in good health ??
Anyways I was thinking to get the battery extended 2300mah
How many hours does your battery last???
Are you using the original HD2 charger? I have tried many different chargers and they always charge at a different rate. It has to be that, not the battery.
secano said:
Are you using the original HD2 charger? I have tried many different chargers and they always charge at a different rate. It has to be that, not the battery.
Click to expand...
Click to collapse
Unfortunately it came with its original charger broken and I have never had the pleasure to try with it.. Anyways I am using a charger that has the same specs of the original one, which is the usb charger of the iPhone 4, and yea same result ...
I have downloaded currentwidget from the market and it gets less than 200mA of current in, when it usually should get around 400mA, sometimes the value goes down to 200mA as well, which makes me really wonder the problem might be the usb port of the phone .
Does a broken battery does that as well??
Segnale007 said:
Unfortunately it came with its original charger broken and I have never had the pleasure to try with it.. Anyways I am using a charger that has the same specs of the original one, which is the usb charger of the iPhone 4, and yea same result ...
I have downloaded currentwidget from the market and it gets less than 200mA of current in, when it usually should get around 400mA, sometimes the value goes down to 200mA as well, which makes me really wonder the problem might be the usb port of the phone .
Does a broken battery does that as well??
Click to expand...
Click to collapse
I think it has to do with the charger you're using . When I charge mine I usually see anything from 500+mA to 700+mA on my battery monitor widget depending on how much charge the battery has, and like Segnale007 said it usually takes about 2 hrs to fully charge.
Segnale007 said:
Unfortunately it came with its original charger broken and I have never had the pleasure to try with it.. Anyways I am using a charger that has the same specs of the original one, which is the usb charger of the iPhone 4, and yea same result ...
I have downloaded currentwidget from the market and it gets less than 200mA of current in, when it usually should get around 400mA, sometimes the value goes down to 200mA as well, which makes me really wonder the problem might be the usb port of the phone .
Does a broken battery does that as well??
Click to expand...
Click to collapse
I can't say it's the battery cause you say it lasts you 14 hours, usb port? maybe. Your battery is good for it to last that much (on averge usage of course). It's the different charger that you're using.
roloracer said:
I think it has to do with the charger you're using . When I charge mine I usually see anything from 500+mA to 700+mA on my battery monitor widget depending on how much charge the battery has, and like Segnale007 said it usually takes about 2 hrs to fully charge.
Click to expand...
Click to collapse
The charger I am using its the iphone 4 charger and just like the original one its a 100-240V ~ 0.2A 50-60HZ , which I have no idea about what it means, but I can guarantee u its the same ..
So, what charger do you suggest me to buy?? I wish it was everything except the phone ...
Segnale007 said:
The charger I am using its the iphone 4 charger and just like the original one its a 100-240V ~ 0.2A 50-60HZ , which I have no idea about what it means, but I can guarantee u its the same ..
So, what charger do you suggest me to buy?? I wish it was everything except the phone ...
Click to expand...
Click to collapse
That's your issue there, 0.2A (aka 200mA).
The UK HD2 charger for example, is 1A (aka 1000mA).
To work out the maximum time it should take to charge the battery:
(capacity x inefficiency factor) / charging current
(1230 x 1.15)/200 = 7 hours
(1230 x 1.15)/1000 = 1.4 hours
xaccers said:
That's your issue there, 0.2A (aka 200mA).
The UK HD2 charger for example, is 1A (aka 1000mA).
Click to expand...
Click to collapse
Oh gosh, so ur basically telling me its the charger I am using what is ****ing up with the slow charging ???
Can you please point me at a good one???
I am totally ignorant about electricity and stuff like that ...
That charger only delievers 0.2 A which is 200ma , you need at least a 500ma charger, mine is a 1 A ( 1000 ma ) and its quite normal to see a 700 ma rate while charging..
Sent from my HTC Desire HD using XDA App
Segnale007 said:
Oh gosh, so ur basically telling me its the charger I am using what is ****ing up with the slow charging ???
Can you please point me at a good one???
I am totally ignorant about electricity and stuff like that ...
Click to expand...
Click to collapse
Take a look on ebay or any local phone shop/online phone accessory shop.
You want a micro usb charger that has an output current of at least 500mA/0.5A
The original HTC ones are 1000mA.
Blackberry ones I've seen are 700mA so they're good enough.
200mA isn't a problem, it won't damage your battery, in fact it will live slightly longer as it's being put under less stress when charging, but don't use your phone while you're charging with it as you'll be drawing more current than the charger can supply.
So for instance, if you wanted a car charger so you could use the phone as a satnav and talk via bluetooth, you'd need a 1A charger to cope with the drain on the battery.
xaccers said:
Take a look on ebay or any local phone shop/online phone accessory shop.
You want a micro usb charger that has an output current of at least 500mA/0.5A
The original HTC ones are 1000mA.
Blackberry ones I've seen are 700mA so they're good enough.
200mA isn't a problem, it won't damage your battery, in fact it will live slightly longer as it's being put under less stress when charging, but don't use your phone while you're charging with it as you'll be drawing more current than the charger can supply.
So for instance, if you wanted a car charger so you could use the phone as a satnav and talk via bluetooth, you'd need a 1A charger to cope with the drain on the battery.
Click to expand...
Click to collapse
Alright thanks, will let you know
Segnale007 said:
You think is the battery?? but I get up to 14 hours of usage, I am not sure if its that good though, but I heard this phone is a sucky battery, and anyways why Battery doctor says the battery is in good health ??
Anyways I was thinking to get the battery extended 2300mah
How many hours does your battery last???
Click to expand...
Click to collapse
With very, very light use about 55 hrs. That's not extended.
Alright, my dad has managed to temporary fix its original charger and I can confirm there's nothing wrong with the battery and the phone itself. It gets beyond 800mA with the original charger and fully recharge the batter within an hour and half, which is great..
Ok now I have to find a compatible USB to wall charger with the same frequency.
Since its a T-Mobile US HD2 its original charger is american, and since I am in Italy I'd get an Italian standard wall charger. Does the Italian HD2 original wall charger has the same frequency of the american one??
Thanks
xaccers said:
Take a look on ebay or any local phone shop/online phone accessory shop.
You want a micro usb charger that has an output current of at least 500mA/0.5A
The original HTC ones are 1000mA.
Blackberry ones I've seen are 700mA so they're good enough.
200mA isn't a problem, it won't damage your battery, in fact it will live slightly longer as it's being put under less stress when charging, but don't use your phone while you're charging with it as you'll be drawing more current than the charger can supply.
So for instance, if you wanted a car charger so you could use the phone as a satnav and talk via bluetooth, you'd need a 1A charger to cope with the drain on the battery.
Click to expand...
Click to collapse
Couldn't said it better..
Sent from my HTC HD2 Gingerbread using XDA App
I have the same problem but with Htc touch 2(Mega)-I know that this isn't Mega forum but i couldn't find any solution there,so i write here my issue-.It takes too much to charge my Touch 2 (around 9-10 hours) with the AC power.On the charger its writen:Input:100-240~0.3A(0,3A)50-60Hz,Output: 5V-1.0A(1,0A)MAX.DO I have the same problem,I need to change the charger?Thank you!
My T-Mobile's battery recharced 3 ours. not 4 ours or more. My charger is original.is there any problem with my battery
The S2 takes forever to charge the battery. Coming fron the iphone 4 i suspect this takes ay laeast twice as long to charge!
Considering the battery performance isnt that great, this is a double whammy!
What do you guus think?
Sent from my GT-I9100 using Tapatalk
Yeah, I noticed the same thing. I'm always charging it when I'm at home to keep it fully charged, in case I'm going out.
charging takes me about 3hours (from empty). It is stanrard time
Same here for charging. Between 3 & 4 hours. But battery life is getting better especially if i disable 3G and wifi
Sent from my GT-I9100 using XDA App
Im using nokia charger 1.2A and HTC charger 1A and also i have 0.7A all of them takes about 3 hours may be hardware bug?
I've been using a BB charger for it, and thought maybe that was the reason. Glad to know it isn't.
Sent from my GT-I9100 using Tapatalk
Yep, I confirm.
Charging takes around 3 hours.
I can use it almost 48 hours before it needs to be charged again. So it is not really annoying.
Stock SGS 2 with official battery charger and a full drained empty battery 3.5 hours to charge to 100% .
jje
tanseerj said:
The S2 takes forever to charge the battery. Coming fron the iphone 4 i suspect this takes ay laeast twice as long to charge!
Considering the battery performance isnt that great, this is a double whammy!
What do you guus think?
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
About 3 hours here which is fine, charging from the supplied charger connected to electricity mains. Are you charging via the USB connector? It will take a lot longer, something called trickle charge or something like that.
JJEgan said:
Stock SGS 2 with official battery charger and a full drained empty battery 3.5 hours to charge to 100% .
jje
Click to expand...
Click to collapse
Same here... It takes too long to charge...
Same here... It takes too long to charge...
No it takes the normal time but if its to slow for you dont drain it or sell it .
jje
I noticed this when my brother bought the same phone. His takes a ridiculous amount of time to charge, maybe 1% per 10 mins or so and it gets really hot while doing so.
Mine on the other hand doesn't get hot at all and charges at least 3 times faster than his.
please state charge state, ages, fast normal etc.
firmware and revison thanx
The charger shipped with my S2 has only 700mA...
especially if you are using the phone (worst: gaming) while charging it seems to get never finished . I guess the current drain doesn't left much for the charging.
So i'm using my old HTC-chargers (one AC=>USB and AC=> MicroUSB) witch both supplies 1000mA.... ~43% more in theory
Hard to say how big the advantage is in fact, but it makes a difference.
Also keep in mind, that a standard USB-Port supplies max. 500mA, depending on other USB-devices even much less. I also read that the charging result is "better" if you not using it in the meantime.
You can buy USB-Chargers up to 2100mA (e.g Amazon), but i have doubts that this will be improve the charging time because on the type-label behind the battery is written Rated : 3,7V-1000mA. Even more current wouldn't not damage the device (afaik!!!), the device or the battery could not charge faster.
Maybe somebody knows about what is meant by the the 1000mA exactly. Would be nice if the device could be charge a little bit faster.
Otherwise i am going to buy a 2nd battery with an external charger.
greetings
I found this on Android Forum
lotus49
USB charging is slow on the S2 as it uses trickle charging
"Trickle" is an exaggeration.
The phone can tell whether it's connected to USB or a mains charger. If the latter, it limits charge current to 650mA. If the former 400mA.
It will charge faster on the mains but not loads faster.
Click to expand...
Click to collapse
SLaRe said:
Same here... It takes too long to charge...
Click to expand...
Click to collapse
I usually sleep more than 3.5 hours per day so I don´t see any problem in the charging time
JJEgan said:
No it takes the normal time but if its to slow for you dont drain it or sell it .
jje
Click to expand...
Click to collapse
My other cell phones are fully charged in 2 hours, more or less. And yes, I'm considering selling it, because I like to use my gadgets and the SGSII doesn't admit an intensive use without running out of battery, unless you have a second battery.
rj3005 said:
I usually sleep more than 3.5 hours per day so I don´t see any problem in the charging time
Click to expand...
Click to collapse
Yeah, I do sleep more than 3.5 hours per day and I try to charge it every night, but the problem is when the phone runs out of battery in the middle of the day and you don't have 3.5 to spend in charging it fully.
I think the iphone 4 is only a 1420Mah battery if I remember correctly while ours is 1650. Sure, it takes perhaps another hour to charge but I don't find it a big deal. It does appear that the first 50% charges faster then the second half as well but that could just be my imagination.
I have read that Samsung phones charge slower so that the battery life will be longer than that of those other phones such as HTC where the phone charges a lot faster. I'd rather get another year out of my battery and it take longer but do admit 3.5 hours does seem like a while.
this topic has been covered. teh SGS2 battery driver is capped at 650 mA for wall charging, 450 mA for USB charging. this code resides in the battery driver.
someone could compile a new kernel with this value raised. other phones like the nexus one charge at 980 mA for wall charger, 480 for USB.
samsung capped charge current, likely for heat issues, nobody really knows.
same. take long time to charge and heating if charge n gaming. the hottest spot at camera side
Sent from my GT-I9100 using XDA Premium App
★★★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!