Database Users

When using phone heavily and charging battery drians.

Hey guys thought I would post here has anyone else expierence this before?
When charging in my car and using either gmaps with gps and listening to music with my g2 the battery drians even while charging!
Yesterday it screwed me over. I was going to a place I had never been and no matter what I tried it wouldn't boot any more. Even after plugging it in to the car charger.
The farthest I would get is that it boots into recovery I hit reboot now and it endlessly loops. Its weird. Is my battery bad?
Thanks!
Sent from my HTC Vision using XDA App

Your battery is fine. I suggest you pull the battery out for a minute or 2 and put it back in
BUT
do not turn the phone on yet. let it charge for half and hour to an hour to give it some charge back and see what happens from there.

Pretty much agree with the above. Make sure you use the wall charger, not USB or the car charger, as those supply lower voltage (EDIT: current or mA, thats the term/units I should have said, per below). Let the phone charge for a long time, maybe overnight, and see what happens.
I've never tried using GPS and playing music at the same time (at least not for any significant length of time). What do you have your screen brightness set at? Since the screen is always on when using Maps/Navigation, turning it down may have a big impact on battery drain, and might result in the charging rate being greater than the drain rate.

I bought the official HTC car usb adaptor for this very reason. Most car adaptors only output between about 300 to 500mA which is less than the battery drain when you play music, use gps and have 3g activated. The HTC adaptor outputs 1000mA and is the fastest car charger I have found. It is as fast as the Nokia N86 home charger I have. Buy one and you won't be dissapointed. It comes with a coiled usb lead in the pack but I use mine with the retractable usb lead that came with my powertraveller.
Sent from my HTC Vision using XDA App

USB supplies only 500mA and car chargers often only supply 1000mA as mentioned. This might not be enough to cover everything =/
My car charger (the official HTC Nexus One car dock) does 2000mA though so it's great =)

matt_not_andrew said:
I bought the official HTC car usb adaptor for this very reason. Most car adaptors only output between about 300 to 500mA which is less than the battery drain when you play music, use gps and have 3g activated. The HTC adaptor outputs 1000mA and is the fastest car charger I have found. It is as fast as the Nokia N86 home charger I have. Buy one and you won't be dissapointed. It comes with a coiled usb lead in the pack but I use mine with the retractable usb lead that came with my powertraveller.
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
Great info. I didn't realize the HTC car charger was that much better than others.

Ah ok this has to be it! Yes I imagine between taxing the cpu, generating heat, 3g, gps, and the screen on with music playing would drain faster than a regular usb can keep up with! Thanks guys. I will be finding a better car adapter! Anyone have any links of where they went?
Sent from my HTC Vision using XDA App

I purchased the Motorola Car Charger from the thread below. Did some research on it, and it is rated to put out 950mah. Not quite as much as the stock HTC car charger, but its only $5 if you follow the link from the thread.
http://forum.xda-developers.com/showthread.php?t=819465&highlight=car+charger
I don't use my phone nearly as heavily as you do in the car, only for GPS directions when I need them. But it works great when I need a quick charge. Drove to work last night (about 15 minutes) and it took me from 22% - 34%. Enough to make it through the evening shift!

Chargers

Any risk in using a different charger than the original samsung one to charge the sgs2?
I use a combination of blackberry charger at work, universal micro usb charger downstairs at home, universal car charger and official charger upstairs.
Any concerns with this?

I've been doing that for ages. I use the droid, SE x10 and iPhone chargers with no issue.
As always YMMV

I am using htc's charger which has a higher rating than samsung charger. No problem at all...
Sent from my GT-I9100 using Tapatalk

I use a Sony charger to charge my S2 , I have not even removed the Samsung one from the box , As long as you use a branded charger will be fine.

I've tried to use Nokia's 1200 mA charger, It did charge the phone but whenever i connected that charger the phone would slow down terribly. So, whatever you use, try to keep it around Samsung's charger's 700 mA.

Ive found that the standard charger is rubbish! I had my galaxy s 4 month and it broke, my wifes galaxy 3 did same and now i dont even bother with the one out the box, just use the usb cable and the adapter i got with my tab.
Sent from my SGS2 via XDA App

[email protected] said:
Ive found that the standard charger is rubbish! I had my galaxy s 4 month and it broke, my wifes galaxy 3 did same and now i dont even bother with the one out the box, just use the usb cable and the adapter i got with my tab.
Sent from my SGS2 via XDA App
Click to expand...
Click to collapse
Absolutely right...my phone is about 1 month old..and the official samsung charger is already broken..not charging anymore..i guess there is an internal wire breakage at the flexible point of the charger becoz when i shake the wire at that point it starts charging intermittently..
Sent from my GT-I9100 using Tapatalk

I use my Kindle charger any micro usb charger will be fine.
Sent from my GT-I9100 using XDA App

iznee said:
Absolutely right...my phone is about 1 month old..and the official samsung charger is already broken..not charging anymore..i guess there is an internal wire breakage at the flexible point of the charger becoz when i shake the wire at that point it starts charging intermittently..
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
Same here. I tried all sorts to get it to work with no joy. I now have 3 duff samsung chargers that are potentially a fire hazard if left plugged in! Tempted to email samsung and raise this concern.
Sent from my SGS2 via XDA App

At home I use a Lenmar AC-to-USB 1A charger I picked up at Fry's for around $10; in the car I use a 1A Cygnett 12V-to-USB charger, also from Fry's. Both charge the device at least as well as the OEM AC charger; the car charger appears to charge the SGS2 even when I'm running CoPilot Live.

I use the iGO charge anywhere.
It's a tad pricey, but since the GS2 battery life isn't great (my only complaint on the phone), the charger is great for it since it has an internal battery that charges up when you put it in an outlet so you can charge the phone without needing an outlet. Great for in school or walking around, just put it in my bag and press the button and it charges.

I'm using my BlackBerry charger with no issues, I just do it for convenience as the charging time is the same as the standard charger.

Cheers for the replies, you have put my worried little mind at ease!

daz_2000 said:
Cheers for the replies, you have put my worried little mind at ease!
Click to expand...
Click to collapse
+1 .Just used the charger from a different brand and no bad feelings while using it

well, i just emailed samsung raising my concerns regarding the faulty chargers... see what they come back with....

Guys have you noticed any change in response when we plug in another charger?
I have been using the HTC charger, 200 mA (input), Output 5V --> 1A.
Whenever i connect my phone to charge and try to work on it, i see my screen lag terribly. Haven't tried it with the supplied charger though due to the low voltage that came with it.
I know i would be wrong, but wanted to check with the experts on this forum...

maddesire said:
Guys have you noticed any change in response when we plug in another charger?
I have been using the HTC charger, 200 mA (input), Output 5V --> 1A.
Whenever i connect my phone to charge and try to work on it, i see my screen lag terribly. Haven't tried it with the supplied charger though due to the low voltage that came with it.
I know i would be wrong, but wanted to check with the experts on this forum...
Click to expand...
Click to collapse
i am using the htc charger that came with the desire hd...no issues what so ever...screen response while charging is the same on or off the charger.

maddesire said:
Guys have you noticed any change in response when we plug in another charger?
I have been using the HTC charger, 200 mA (input), Output 5V --> 1A.
Whenever i connect my phone to charge and try to work on it, i see my screen lag terribly. Haven't tried it with the supplied charger though due to the low voltage that came with it.
I know i would be wrong, but wanted to check with the experts on this forum...
Click to expand...
Click to collapse
200ma is way low, less than half the 500 ma usb standard. Get a new charger. Most of the chargers you are going to see will be 500 ma I would go with double that.

Some (bad?) chargers will disable touchscreen
I have a couple of usb-chargers off ebay and they give some trouble.
When connected, the touchscreen will not work anymore.
This is mentioned in the manual btw.
Guess the SII is a little sensitive.

Yeah, ebay chargers are a crapshoot. Head to walmart or similar and read the power specs, get something that puts out 5v at 1A LPS. This will charge much faster than the often usb based standard 500 mA chargers and the battery will not be harmed at that charging level which is what many stock HTC chargers put out nowdays. Do not get anything less than 500mA, this is the usb standard and works but will be slower to charge. El Cheapo no name chargers on ebay and such may have the spec but may or may not actually put out the juice. You can usually tell this because the phone will have problems like the ones mentioned right here. The stock charger does not put out any special juice, juice is juice. If a charger puts out to spec the phone will work while charging.

Charging tests (extension cord failure?)

Hello people!
First of all, I have a HTC EVO 3D GSM, and the tests I tried below are done on it... I just posted here because I don't think the issue I am having is device-specific (happened on the Desire and Desire HD, too - somewhat). Actually, I know this issue isn't device-specific. I'm just trying to find out if anyone else has been experiencing this, at a moment in his life .
I originally posted the thread in General discussion -> General, but the topic's been moved, rendering it useless...
I know this post is very long, but please allow 5-10 minutes of your time to go through this.
Charger : original HTC charger (1A output).
Cables : two BlackBerry microUSB cables, one is 2 inches shorter than the other. The HTC one broke after two weeks of usage, these BlackBerry ones stand up for the fight even after 6 months of abusing.
Extension cord : HAMA. USB 2.0, maximum speed 480 Mbit/s (that's what it says on the box). "Additional shielding for a good reduction of electromagnetic interference" -> so it's not double shielded (in case that matters at all). It's gray (for what it's worth). 1.8 meters long.
Battery Monitor Widget (BMW) may not show power consumption accurate while deep sleep, but it works fine when the phone is used and, THANK GOD, when CHARGING. So, with that app, I monitored the input current...
So... here's my little personal test.
Battery was at ~81%, so the input current wasn't varying because of the battery level, but because of the (****ty) cable(s). Throughout the test, the battery level got up a bit, but I tried to keep it steady at ~81-82 at the beginning of each test.
CPU @ 192 MHz - 1.51 GHz, Interactive governor. No undervolting, so the table ranges from 800mV (192 MHz) to 1175mV (1.51 GHz). Nothing changes, anyway, even if I undervolt it -75mV, so the voltage has nothing to do with it (maybe during * tests, it could mean a difference of a few miliamps, but it's not a viable solution).
Charging tests # - Wi-Fi off, Data off, Screen on Auto, off until I wake it and check the current with BMW.
Charging #1 : just with the BlackBerry cable, no extension cord. 1 minute after plug in : +800mA. 2 minutes after that : +789mA. It went up to 82%, so I discharged it to 81% and carried on with the next test.
Charging #2 : BlackBerry cable + the HAMA extension cord. 1 minute after plug in : +489mA. 2 minutes after that : +485mA. Notice that the input current was almost sliced in half.
Charging tests * - Wi-Fi on (signal ~80%), Data off, Screen on lowest brightness. Playing Star Legends (basically, it's opened, I'm not touching anything, any graphics that are going on there are hardly intense, nothing GPU-hunry is going on, so it's just sitting there). Media volume = 1.
Charging *1 : just with the BlackBerry cable, no extension cord. 1 minute after plug in : +413mA. 2 minutes after that : +471mA.
I couldn't resist and entered a PvP, so intense graphics were somewhat there, also touch points and all that... The current input was around +312mA.
Charging *1 : BlackBerry cable + the HAMA extension cord. 1 minute after plug in : -11mA. Notice it's discharging, but at a slow rate. 2 minutes after that : +31mA. So it started to actually draw some current from the charger, so I let it that way for another 2 minutes, and it's got to -5mA again. So definetly no charging here .
Normally, without charging, the consumption would be of about -513mA... -622mA... Same conditions : Wi-Fi on (~80% signal), Media volume on 1, lowest screen brightness, player just sitting there (in Star Legends).
I did tests with Asphalt 6 (no Wi-Fi, no active Internet connection), too. Same consumption... Same sh*t... I was thinking the Internet connection is what kills the incoming current the most (it turns out it hardly is).
So... Has anyone ever experienced something similar?! I really need an extension cord, lol.
----------------------------------------------------------------------------------------------------------------
I was wondering if a more powerful charger would solve this, but after reading THIS, I think there are hardly any chances...
I had another HAMA extension cord before. White, with double shielding, same lenght (1.8 meters)... Same current readings... I brought that one back to the store to get my $7 back, and here I am, 1 week later, having another one, in hope that the previous one was broken and this one is not. Haha...
So it's not the cord itself (bad company, lol), but the fact that there just is another connection the current has to go through...?!

Your tests are meaningless. Your phone does not draw more than 650mA no matter what charger you use. But it's possible the phone draws less if the extension cable somehow interferes.

oinkylicious said:
Your tests are meaningless. Your phone does not draw more than 650mA no matter what charger you use. But it's possible the phone draws less if the extension cable somehow interferes.
Click to expand...
Click to collapse
It draws 900 mA (no extension cable) when the battery is nearly empty. As the battery fills up, the input current lowers...

Formhault said:
It draws 900 mA (no extension cable) when the battery is nearly empty
Click to expand...
Click to collapse
No, it does not, no matter what Battery Monitor Widget tells you.

How can you be sure it only draws 650mA?
I tried to charge my old Desire with a 600mA charger and it wasn't full even after 6 hours!!! That was 7 months ago...

i was wondering about this as i dont have the orignal charger it came with but i hear its at 0.7amps, while some have 1.0amps, this link states below that the galaxy note charger is faster at 1.0amp,
http://forum.xda-developers.com/showthread.php?t=1329510

Formhault said:
How can you be sure it only draws 650mA?
Click to expand...
Click to collapse
It's well documented in the forums and there's also video evidence

From my understanding, the Galaxy S 2 comes with a 0.7A charger (just like the Nexus S). If it comes with that, it means it only draws that much... Am I right?
All HTC's I've owned had a 1A charger. When I tried a 600mA charger I had at home, it barely charged the phone(s)...
So I'd say the input current limitation you've got doesn't affect HTC users (gladly). Still, there's no way to be sure about that, I can't find a similar video on YouTube, nor information regarding it...

What's that got to do with the I9100, which does have such a limitation no matter what charger you use?
Wow, reading fail on my part, you don't even have an I9100.
You're in the wrong forums, and this device is limited to 650mA.

i cant find alot of info about its amps
this guy states he got a 1amp charger with his SG2
http://forum.xda-developers.com/showpost.php?p=19210781&postcount=17
im using a .85A charger from my sony x8 and it chargers the same as my other wall charger
original battery charger with dock stand
http://www.trademe.co.nz/Browse/Listing.aspx?id=456123032
Input: 5.0V 500mA-700 mA
Output: 4.2V 450mA-600mA

oinkylicious said:
What's that got to do with the I9100, which does have such a limitation no matter what charger you use?
Wow, reading fail on my part, you don't even have an I9100.
You're in the wrong forums, and this device is limited to 650mA.
Click to expand...
Click to collapse
It may be limited, okay, but then again, if my device draws +400mA from the charger if I use it when otherwise it would charge at ~+800, that means also your dual core big-screen device would do the same, too (but not at the same values). So if you take 650mA from the charger, I assume it would charge at maximum 250 if you use it (say browse the web etc.)
What does Battery Monitor Widget / CurrentWidget show you? Does it show actual current input or... it shows fake values?!

republicano said:
i cant find alot of info about its amps
this guy states he got a 1amp charger with his SG2
http://forum.xda-developers.com/showpost.php?p=19210781&postcount=17
im using a .85A charger from my sony x8 and it chargers the same as my other wall charger
original battery charger with dock stand
http://www.trademe.co.nz/Browse/Listing.aspx?id=456123032
Input: 5.0V 500mA-700 mA
Output: 4.2V 450mA-600mA
Click to expand...
Click to collapse
When I heard you guys here on the forums saying that the SGS2 charges at only 650mA... I asked a friend of mine (only know one to own this device, sadly). I just gave him a phonecall and asked if his charger was of .6A or 1. He said 1. Also, his phone charges fast, in like 2 hours (he claims), so I'd say it really draws 1A... Otherwise it can't charge in only 2 hours...
He couldn't tell me what ROM he's using. I figured there's gotta be something modified in the kernel or something, but he has no idea what ROM he's got rolleyes:).
Sorry for the double post, I was expecting it to be automatically merged (which normally happens).

Couldn't care less about charging a HTC. Don't own one but I bet there are heaps of people that do in that forum.
Sent from my GT-I9100 using XDA App

On the topic of charging my S2 with other cables, I've noticed strange anomalies when using Blackberry chargers and USB cables with my S2. My touchscreen gets unresponsive until I unplug the Blackberry charger.
Has anyone noticed this?

rawr said:
On the topic of charging my S2 with other cables, I've noticed strange anomalies when using Blackberry chargers and USB cables with my S2. My touchscreen gets unresponsive until I unplug the Blackberry charger.
Has anyone noticed this?
Click to expand...
Click to collapse
Yes. Not totally unresponsive but intermittent and sometimes to lockup until unplugged.
Sent from my GT-I9100 using XDA App

rawr said:
On the topic of charging my S2 with other cables, I've noticed strange anomalies when using Blackberry chargers and USB cables with my S2. My touchscreen gets unresponsive until I unplug the Blackberry charger.
Has anyone noticed this?
Click to expand...
Click to collapse
That never happened to my HTC. I've used BlackBerry and Nokia cables, cables won't do anything.
I have a wall charger, which is claimed to be of 1A. It barely gives me +13mA, lol. It came in a pack with a car charger, which also was claimed to have 1A, and that one DID provide 1A 3 months ago when I tried it on my Desire (never tried it since then -- sold it now). When using the wall charger, the touchscreen would become unresponsive after 5 seconds. Unresponsive = touches itself, so-to-say.

aceofclubs said:
Couldn't care less about charging a HTC. Don't own one but I bet there are heaps of people that do in that forum.
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
I just posted this topic in this forum too, because I figure there are more active S2 users than 3VO users... And I wanted to hear from you guys, how your phones behave in the same situations, too... Otherwise you imagine I wouldn't be here...
--
God damn it. I thought the posts get merged if you make a new post just after you've already done one...?! :/

[SOLUTION] Slow 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 ?
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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!

[Q] Vehicle Charging

Any idea why I can't seem to get the phone to actually charge in a vehicle while I am using Google Maps/Navigation or even just Spotify. I tried turning the brightness way down (can't read it), and tried turning Fast Charge on via Toggle. What does Fast Charge do anyway?
I am using a good 2.1A vehicle charger with a good USB cable. Is this normal even for stock ROM? I do know signal strength has a say in that. I just did 6 hours of driving and my battery dropped from 100% down to 60% by the end of the trip. I know it's more than not having it plugged in..
I am currently on AOKP ROM Milestone 2.

Im on a s3 with a s4 rom chaos latest same problem ! Get hot battery as well seems to even out if blue tooth is off its a 4.2.2 problem /glitch
Sent from my GT-I9300 using xda premium

You guys may have weak batteries. I had a bad battery right out the box. While charging in the car, my battery level would drop rather than rise. I took the battery back to the Sprint store where I bought the phone and they load tested the battery and said that it was bad (they have a special load tester for phone batteries). They gave me a new battery out of another, brand-new S4 box. One of the advantages of buying stuff in a store is getting better service (not always, but usually).

Seems strange.. I plan on getting a spare OEM battery anyway. I guess I'll try another battery and see what happens. Got the phone @ Best Buy.

I just did a test out of curiosity. I left my house and my battery was at 58%. I plugged it into my car charger and turned on gps navigation and played music. Twenty minutes later I was at 70%. I am using my stock odexed mf9 with all of my mods.
What is this fast charge toggle?
Sent from my SPH-L720 using Tapatalk 4

You need to get a 2 amp car charger. The white samsung block that comes with the S4 and note 2 use 2 amps vs the 1 amp charger that you prob have in the car. If you use any applications that draw a lot of battery, the 1 amp charger will basically keep the battery elevated, when I am watching a youtube my battery does not "charge" and if it does it charges very very slowly on a 1 amp charger. Most places that sell chargers will have a 1 amp charger so you need to look for 2 amps or "rapid" charger, which are most likely 2 amp chargers. Just make sure it's from a credible manufacturer as well, that ebay **** will allow spikes from your vehicles charging system and decrease battery life.

mista_k said:
You need to get a 2 amp car charger. The white samsung block that comes with the S4 and note 2 use 2 amps vs the 1 amp charger that you prob have in the car. If you use any applications that draw a lot of battery, the 1 amp charger will basically keep the battery elevated, when I am watching a youtube my battery does not "charge" and if it does it charges very very slowly on a 1 amp charger. Most places that sell chargers will have a 1 amp charger so you need to look for 2 amps or "rapid" charger, which are most likely 2 amp chargers. Just make sure it's from a credible manufacturer as well, that ebay **** will allow spikes from your vehicles charging system and decrease battery life.
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Like he said, a quality charger is the key, and the problem with most car chargers are they aren't wired correctly. When the charger communicates to the phone it will appear as a usb charger and then the phone will only charge at .5 amps because it thinks its charging from a usb port instead of a charger. There are mods out there to mod the chargers so the phone thinks its connected to a wall charger and will charge much faster.

I was kind of wondering if there would be a better car charger out there for our phones. I've been using my old reliable VZ charger I've had since the Droid X. It does the job, but not as great as it should or could be. Haven't had any issues with it & charges okay. I'm due for a new one lol.

The problem is likely the cable you are using. After lots of research it became clear to me it is my USB cables that is stopping my nexus 4 and 7 from being charged in the car.
I bought a good quality dual 3.8A charger but couldn't get it to charge my N4 while using Co-Pilot UNTIL I changed the cable to a "charging only" cable. Basically the cable does not put the device in data mode and allows the device to be charged at higher rate than a normal data cable.
http://www.amazon.co.uk/gp/product/B0088HTYUE/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1

P1NK13P13 said:
I was kind of wondering if there would be a better car charger out there for our phones. I've been using my old reliable VZ charger I've had since the Droid X. It does the job, but not as great as it should or could be. Haven't had any issues with it & charges okay. I'm due for a new one lol.
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Click to collapse
Best buy has Rocket Fish 2 and 3 amp chargers for the car that work great. They also have 2 usb input ones also. You can just buy the charging part and use any cable you want or buy the one with the cable.
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