Charge rate with >700mA charger - Galaxy S I9000 General

Has anyone experimented with a greater than 700mA microUSB charger? The charging time with the stock unit is much too slow IMO.

I bought a 2A car charger and have had no problem
Sent from my... you know!

I have a 2A, 5v car charger, that works no worries. I needed the higher power charger to have the phone's BEAUTIFUL screen on with Sygic Navigation running while Im driving, and still have the phone charge.
Running it like this, it charges slowly, but doesnt get very hot and can be running the whole time.
I havent tried having it plugged in much without the screen on, but i reckon it would just charge faster without much fuss.
Cheers.

I'd like to know where you bought it from, guys...

Fatherboard said:
I'd like to know where you bought it from, guys...
Click to expand...
Click to collapse
from here
http://forum.xda-developers.com/showthread.php?t=757909
read my messages on that topic

starskyh said:
I have a 2A, 5v car charger, that works no worries. I needed the higher power charger to have the phone's BEAUTIFUL screen on with Sygic Navigation running while Im driving, and still have the phone charge.
Running it like this, it charges slowly, but doesnt get very hot and can be running the whole time.
Click to expand...
Click to collapse
Would you check the current the phone is drawing from your 2A charger?
Go to the file /sys/class/power_supply/battery/batt_chg_current and open it with Astro or some other file manager.
In the same location, the file charging_source gives the following values:
0 - no power source
1 - usb power source (with limited current per batt_chg_current)
2 - wall power source with higher current in batt_chg_current)
What is yours reporting when connected to the 2A, for both files?

Related

how to enable high power usb charge

anyone knows?
possibly need to write a custom oem_misc.dll. if some one can, then we can have TV out too ...
i heard it is just a reg change
anyone knows pls?
Don't know the reg change in this case, but guess won't really work.
For instance, for enabling FM radio without headset, changing the headset state in reg won't work. I would be happy to be proven wrong though
leobox1 said:
anyone knows pls?
Click to expand...
Click to collapse
Hi leobox1,
Not sure that there is a way to enable this. Charge rate is determined by battery voltage and available current from the charger, not by software (other than the simple battery management chip in the battery). So if your battery is low and you have high power USB connection, it will take as much charge transfer as the battery will accept, provided the supply voltage can keep up. I don't think that the charger circuit can recognise the difference between low power USB, high power USB, or charger USB connection.
mike.waters said:
Hi leobox1,
Charge rate is determined by battery voltage and available current from the charger, not by software .... I don't think that the charger circuit can recognise the difference between low power USB, high power USB, or charger USB connection.
Click to expand...
Click to collapse
I don't think so. When HD is on, the current consumed at a given battery level of charge for a given (same) voltage is higher with wall charger than computer USB. Don't have the values that I measured once... But this doesn't seem to be the case when HD is switched off.
So there has to be some kind of monitoring going on by the CPU.
The charger has the two data pins connected together so the handset knows it is receiving power from the charger and not a USB port. The device will then charge with as much power as the charger will allow, up to 1000mA
The amount of USB power definately changes the speed at which this recharges. I purchased a 3amp car charger and it will charge my Touch HD in half the time it charges from the wall charger. My laptop puts out a small USB power supply and it take all day to charge my phone. My old Pocket PC had the selection for fast or slow charge, this one seems to handle it on it's own.
hmm so in short it is beyond our control?
leobox1 said:
hmm so in short it is beyond our control?
Click to expand...
Click to collapse
In short - Yes
backdoc94 said:
I purchased a 3amp car charger and it will charge my Touch HD in half the time it charges from the wall charger.
Click to expand...
Click to collapse
3 Amps? Are you sure, I don't know if I would want to connect my Touch HD to a 3A supply. Where did you buy it from?
Picked it up from ebay. It works really well, no overheating. The phone only takes what it needs, the charge is controlled by the phone not the charger.
Oh, I know the phone will only pull the power it wants, that is not the issue. A 3 amp power supply would cost quite a bit if it was a decent regulated one, and I would not use anything but a regulated power supply.
So I was guessing you were using a 3A unregulated supply. Which is something I would be very wary of, the risk of a voltage spike is going to be higher than with a lower amperage.
the only reason that the phone charges faster using the htc charger is so that people like us spend more money on official htc accessories.
its not just htc that do this.
why do you even think they have this extusb instead of a normal usb port?
a normal usb port on a pc is rated to give out 500mA (half an amp) of current.
that doesnt mean that a normal usb socket cant accept more than that though. just think back to the old htc devices that charged much faster.
wake up guys
http://www.nuerom.com/BlogEngine/
I think theres something interesting there
chrisque1 said:
http://www.nuerom.com/BlogEngine/
I think theres something interesting there
Click to expand...
Click to collapse
what is it for?

Portable Charger!

We (noordwyk & Me) managed to put together a Portable Charger for the Diamond. I have attached some pics:
noordwyk will soon post the diagram
Sounds cool anychance of some more info: Like what you used and a diagram to show how it's wired? Please.
When i get time I shall upload a graph
For everyone without soldering skills - there are plenty of portable external chargers for sale, even one from HTC:
HTC Battery Bank BB G300
i've bought a couple of portable chargers. Neither of them worked. In bothe cases i plugged them in and my diamond showed itself as being connected to a power source on the task bar. The light ring pulsed in the charge pattern also. However after a few minutes of "charging" once removed the battery level is lower than when i plugged it in. This is the case whether i had the diamond on or off when charging. Chargers work fine using different adaptors on other none wm phones. The thought i had was that the chargers were outputting enough to power the charging circuit but not enough to charge. This in turn is draining the battery. any thoughts ppl??
optiknerv said:
i've bought a couple of portable chargers. Neither of them worked. In bothe cases i plugged them in and my diamond showed itself as being connected to a power source on the task bar. The light ring pulsed in the charge pattern also. However after a few minutes of "charging" once removed the battery level is lower than when i plugged it in. This is the case whether i had the diamond on or off when charging. Chargers work fine using different adaptors on other none wm phones. The thought i had was that the chargers were outputting enough to power the charging circuit but not enough to charge. This in turn is draining the battery. any thoughts ppl??
Click to expand...
Click to collapse
Portable chargers and HTC don't go together. You MUST switch your phone off to charge it otherwise the PMS will get confused and keep changing power sources like External > Internal > External > Internal and so on. Just like a light switch when you turn it on it takes more power than just leaving it on for 10 minutes. Portable chargers have a charge rate of ~250 mA which is 1/4 of a Official HTC Charger.
Conclusion: If you want to use a portable charger ONLY use it after turning your phone off otherwise its USeLESS
mohamedhussain1995 said:
Portable chargers and HTC don't go together. You MUST switch your phone off to charge it otherwise the PMS will get confused and keep changing power sources like External > Internal > External > Internal and so on. Just like a light switch when you turn it on it takes more power than just leaving it on for 10 minutes. Portable chargers have a charge rate of ~250 mA which is 1/4 of a Official HTC Charger.
Conclusion: If you want to use a portable charger ONLY use it after turning your phone off otherwise its USeLESS
Click to expand...
Click to collapse
Is it the same for car chargers ? If so, how can we power the device for, say, using GPS navigation for long trips ?
mysterd said:
Is it the same for car chargers ? If so, how can we power the device for, say, using GPS navigation for long trips ?
Click to expand...
Click to collapse
Nope! Car Chargers work well. I use one regularly - specifically for the reason you mentioned- usage of GPS while on long trips.
mohamedhussain1995 said:
Portable chargers and HTC don't go together. You MUST switch your phone off to charge it otherwise the PMS will get confused and keep changing power sources like External > Internal > External > Internal and so on. Just like a light switch when you turn it on it takes more power than just leaving it on for 10 minutes. Portable chargers have a charge rate of ~250 mA which is 1/4 of a Official HTC Charger.
Conclusion: If you want to use a portable charger ONLY use it after turning your phone off otherwise its USeLESS
Click to expand...
Click to collapse
Basically what i thought then. I must be getting particularly rubbish ones because they dont even work when the phone is off. I gave up on them a few months ago and just bought a spare battery and charger. Quite cheap off ebay and a battery is a smaller item to carry than a portable charger.
mohamedhussain1995 said:
I managed to put together a Portable Charger for the Diamond. I have attached some pics:
Click to expand...
Click to collapse
I would be quite interested to see a wiring diagram of this too, it'd be great to be able to just grab a 9v and charge up on the run...
mohamedhussain1995 said:
a light switch when you turn it on it takes more power than just leaving it on for 10 minutes
Click to expand...
Click to collapse
is this true ?
lastnikita said:
is this true ?
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Click to collapse
Well its true in the UK
Shouldn't be too hard to build. Take one of these (high efficiency!), solder the 9V battery adapter and the mini-usb cable to it and your're done. Only thing I worry about is the capacity. You get NiMH 9V cells at approx 250 mAh. Given the battery voltage is 9V, you get a total energy of 8.1 kJ stored in it, which translates to 450 mAh at 5V (input voltage of device). Given that this back-of-the-envelope calculation does not take conversion losses in account, you can be happy if you get 20-30% charge out of it. Maybe you could wire several 9V batteries in parallel so you get more charge out of it. Which I am gonna try out right away .
lastnikita said:
is this true ?
Click to expand...
Click to collapse
No. MythBusters tried it out. Turning on an incandescent light bulb (60W I think?) uses about the same power as leaving it on for 17 seconds. Fluorescent light bulbs didn't use significantly more power to turn on.
smjoshi said:
Nope! Car Chargers work well. I use one regularly - specifically for the reason you mentioned- usage of GPS while on long trips.
Click to expand...
Click to collapse
Ok...
The only problem is that my Diamond seems to use more power than what is provided by the car charger... So the car charger limits the discharge, but that's all.
On my old prophet, I could have used GPS for days (using a bluetooth external GPS of course).
It's a pity the diamond is not as power efficient.
mysterd said:
Ok...
The only problem is that my Diamond seems to use more power than what is provided by the car charger... So the car charger limits the discharge, but that's all.
On my old prophet, I could have used GPS for days (using a bluetooth external GPS of course).
It's a pity the diamond is not as power efficient.
Click to expand...
Click to collapse
I agree with you. A fellow XDA member posted somewhere here that he started of with 100% for a 6 Hour journey using his diamond and when he got to his destination he said it was around 30% left!
It's not too hard to build one, as soon as I remember, it's adapter (for the battery), 5V regulator and a female USB (it's easier to find, you use your sync cable and you can charge other things, MP3 players, portable speakers etc.).
Am I right, or you have different design.
Also, you can use 4 1.5V batteries, I've got few 1900mAh of them, so they should last longer. Also, I think the regular 9V battery is bigger than 250mAh.
Well i soon will be updating my E42M website with this years invetions so visit it when you can
See my signature

Battery charge current help needed

Long story, but I bought a used Fascinate without the stock charger.
Could someone install, or hopefully already have, the "Battery monitor Widget". Then plug their Fascinate into the stock AC charger or stock car charger (NOT the USB on a PC), and let me know what the usage (ma) reading is on the widget.
More of the story. Basically, I know that at least on older HTC devices they would pull more charge/operating power from a non-USB connection. Actual USB is limited to 500ma load, so they had a system that kept the current low on USB and bumped it up for non-USB. All of the non-stock cables that I have show a very low charge rate on the Fascinate. It in fact runs the battery dead while on charge and I use the phone with GPS software.
i can tell you the factory charger is putting out 5v at .7a(700ma).
Mylt1 said:
i can tell you the factory charger is putting out 5v at .7a(700ma).
Click to expand...
Click to collapse
Thanks, it is good to know that they stick with 5V. But it just means that it can put out up to 700ma. I suspect it is using about half of that.
If you can cut open the wires and insert and ammeter in series, that is what I need to know.
edit: nvm ...
Found it. I have been searching for this for a couple of weeks and just now stumbled on the right search keywords.
For anyone that wants to know.
The Fascinate appears to pull about 350ma from the 5 volt supply normally. But, if you short out the USB D+ and D- lines in the charge connector, the charge current goes up to about 600ma.
That will help me not have a dead battery when using the GPS.
Oh, as an added bonus, you don't get the USB / Debug notification.

Phone stops charging

My S4 has developed a problem where it seems to stop charging overnight, leaving me with a low battery in the morning. When I plug it into the charger the red light comes on, but when I return in the morning it has stopped charging and the battery has lost 20% of its charge.
A different USB cable, plugged into the same charger, seems to be charging it for now. Does this mean that the original cable is faulty, or do I need to get the USB connector on the phone checked out?
itm said:
My S4 has developed a problem where it seems to stop charging overnight, leaving me with a low battery in the morning. When I plug it into the charger the red light comes on, but when I return in the morning it has stopped charging and the battery has lost 20% of its charge.
A different USB cable, plugged into the same charger, seems to be charging it for now. Does this mean that the original cable is faulty, or do I need to get the USB connector on the phone checked out?
Click to expand...
Click to collapse
Maybe there is overheating problem so phone stops charging process. Try to start charging and observe it. When it stops charging again, check if it is hot.
Diamond 2 owner said:
Maybe there is overheating problem so phone stops charging process. Try to start charging and observe it. When it stops charging again, check if it is hot.
Click to expand...
Click to collapse
Seems to be, i've noticed this myself too on days my room is very hot. Ever since i've undervolted a little it hasn't happened again.
Sent from my GT-I9505 using xda app-developers app
Kenablo said:
Seems to be, i've noticed this myself too on days my room is very hot. Ever since i've undervolted a little it hasn't happened again.
Sent from my GT-I9505 using xda app-developers app
Click to expand...
Click to collapse
First make sure that phone is placed on clean, flat surface with good air flow. Worst case is placing it on bed, blanket or pillow - it will overheat for sure.
Undervolting will not help a lot, as it only affect CPU/GPU heating, while they are usually idling during charging. Main source of heat in that situation is not a CPU/GPU but charging itself.
If you have really high room temperature, and you can do nothing about it, than you can slow down charging process, so it will decrease charging heating. Just use regular USB port (computer or generic USB charger) instead dedicated Samsung S4 charger. Charging current will be decreased from 1.9A to 500mA.
If you want to have more control over charging and temperatures you could install Battery Monitor Widget Pro (https://play.google.com/store/apps/details?id=ccc71.bmw.pro). See example of data which you can got with on wireless charging thread: http://forum.xda-developers.com/showpost.php?p=43224425&postcount=1018
My battery temperature goes up to 35C during charging (wireless charging).
The theory re. heat is interesting, but doesn't seem to explain why switching USB cables fixed the problem immediately in this case. Is the S4 particularly sensitive to the fit of the USB cable in the socket??
itm said:
The theory re. heat is interesting, but doesn't seem to explain why switching USB cables fixed the problem immediately in this case. Is the S4 particularly sensitive to the fit of the USB cable in the socket??
Click to expand...
Click to collapse
No, S4 is not particularly sensitive to the fit of the USB cable in the socket.
Keep in mind, that max charging current on S4 is based on detection routine which tries to figure it out what is phone connected to (is it regular USB port specified for up to 500mA or dedicated 2 amps charger). It is necessary to accomplish down compatibility with generic USB hosts (you can connect S4 to every USB device) and fast charging feature (less then 2h charging time).
So, you can say, that S4 is sensitive to USB cable/device type. Switching from dedicated cable/charger to 3rd party, could decrease charging current and generated heat.
I hope, this theory explains all your doubts
Diamond 2 owner said:
No, S4 is not particularly sensitive to the fit of the USB cable in the socket.
Keep in mind, that max charging current on S4 is based on detection routine which tries to figure it out what is phone connected to (is it regular USB port specified for up to 500mA or dedicated 2 amps charger). It is necessary to accomplish down compatibility with generic USB hosts (you can connect S4 to every USB device) and fast charging feature (less then 2h charging time).
So, you can say, that S4 is sensitive to USB cable/device type. Switching from dedicated cable/charger to 3rd party, could decrease charging current and generated heat.
I hope, this theory explains all your doubts
Click to expand...
Click to collapse
Thanks for the explanation - it certainly does help. It looks as if the flaw may be with the detection routine, which was preventing it from charging when connected to the stock charger/stock cable, but was happy to allow it when using a different cable with the stock charger.
It also explains another anomaly - when using the S4 as a Sat Nav in the car with a TomTom High-Speed multi charger the phone will only charge if the screen is turned off. With the screen on it actually loses charge.
Is there any way to "hack" this logic to eradicate these anomalies and ensure that the phone charges when you want it to? Or could it be that there is actually a fault with my phone that needs to be checked out?
I suspect this may not be normal...I've just plugged the phone into the stock charger/cable. The phone/battery are not remotely warm, but the phone isn't charging, even though the battery icon in the notification bar says that it is (there's a lightning bolt in the battery icon but it just lost 1% charge in 2 mins with the screen turned off).
The LED went red when I first plugged it in, but the red light went out after a minute, although the lightning bolt remained in the battery icon in the notification bar.
???
itm said:
I suspect this may not be normal...I've just plugged the phone into the stock charger/cable. The phone/battery are not remotely warm, but the phone isn't charging, even though the battery icon in the notification bar says that it is (there's a lightning bolt in the battery icon but it just lost 1% charge in 2 mins with the screen turned off).
The LED went red when I first plugged it in, but the red light went out after a minute, although the lightning bolt remained in the battery icon in the notification bar.
???
Click to expand...
Click to collapse
At this point it sounds like you have a defective battery/phone Anyway, here's a sample test you can try:
Get this app: Galaxy Charging Current Lite
With the stock charger/cable you should be seeing (remember to keep refreshing):
- Not charging - -
- Screen on - 1200 mA
- Screen off - 1900 mA
(yes, there's a difference in the charging current depending on whether the screen is off or on)
Plugged to a standard USB port: 460 mA
Plugged to a car charger - depends on the output of the charger - most car chargers are 1A these days
Try with different cables plugged into a PC USB port - you should be getting a constant 460 mA charge. If it stops as described and you tried a few cable it's likely the battery/phone. HTH
Breach1337 said:
At this point it sounds like you have a defective battery/phone Anyway, here's a sample test you can try:
Get this app: Galaxy Charging Current Lite
With the stock charger/cable you should be seeing (remember to keep refreshing):
- Not charging - -
- Screen on - 1200 mA
- Screen off - 1900 mA
(yes, there's a difference in the charging current depending on whether the screen is off or on)
Plugged to a standard USB port: 460 mA
Plugged to a car charger - depends on the output of the charger - most car chargers are 1A these days
Try with different cables plugged into a PC USB port - you should be getting a constant 460 mA charge. If it stops as described and you tried a few cable it's likely the battery/phone. HTH
Click to expand...
Click to collapse
Thanks. The Galaxy Charging Current Lite app shows:
- Connected to stock charger, screen on, with stock battery: a steady 340
- Connected to stock charger, screen off, with stock battery: 380
- Connected to PC USB port, with stock battery: 460
- Connected to car charger, with stock battery: 500
- Connected to stock charger, screen on, with 3rd party battery: a steady 300
Can I assume from the above that the phone is faulty?
itm said:
Thanks. The Galaxy Charging Current Lite app shows:
- Connected to stock charger, screen on, with stock battery: a steady 340
- Connected to stock charger, screen off, with stock battery: 380
- Connected to PC USB port, with stock battery: 460
- Connected to car charger, with stock battery: 500
- Connected to stock charger, screen on, with 3rd party battery: a steady 300
Can I assume from the above that the phone is faulty?
Click to expand...
Click to collapse
I just tried a few different USB cables with the stock charger - these gave me interesting results:
- Cable 1 : 1200
- Cable 2: 1200
- Cable 3: 420
So maybe it's the stock cable that's the problem?
itm said:
Thanks. The Galaxy Charging Current Lite app shows:
- Connected to stock charger, screen on, with stock battery: a steady 340
- Connected to stock charger, screen off, with stock battery: 380
- Connected to PC USB port, with stock battery: 460
- Connected to car charger, with stock battery: 500
- Connected to stock charger, screen on, with 3rd party battery: a steady 300
Can I assume from the above that the phone is faulty?
Click to expand...
Click to collapse
Actually it looks like more of a problem with your stock charger (as you're getting normal charge from a USB port)!
- Are you using the same cable with your stock charger, when connected to the PC USB port and your car charger? Try a different cable in all this scenarios to rule out the cable as a factor.
- What I'd recommend is to find another stock charger - go to a Samsung shop / service center - ask to test on site and see what input your phone is getting. You may test with any other mains charger but as you need to be sure of the power it delivers I'd test with an official Samsung 2A charger. If you don't get 1200/1900 with another official charger (and a working cable) then it's an issue with the phone/battery.
Re your car charger. It's possible that your car charger is 500 ma only (check the writing) if it's 0.5 A you need a new one (get a 2A one). Is it a real 12V cigarette charger or are you plugging the cable in a USB port on your car?
---------- Post added at 12:15 PM ---------- Previous post was at 12:11 PM ----------
itm said:
I just tried a few different USB cables with the stock charger - these gave me interesting results:
- Cable 1 : 1200
- Cable 2: 1200
- Cable 3: 420
So maybe it's the stock cable that's the problem?
Click to expand...
Click to collapse
There you go I fried two old cables already so not all of them can sustain the 2A charge. Use Cable 1 or 2. Make sure it also charges at 1900 ma - plug it in, open the app, refresh so that it shows 1200 ma. Turn the screen off. Give it 5 seconds (red led should turn on). Turn the screen back on. immediately refresh - you should see 1900.
I'm getting 1200/1900 from the stock charger if I use "Cable 1" or "Cable 2" as referred to above, so I guess that indicates that the charger is OK? (the stock cable only gives 300 from the same charger)
I'm surprised that I can only get 500 from the car charger using Cable 1/2, as it is advertised as having a 2amp port. In fact I get a higher charge rate (740) using the "slower" port on the TomTom charger - i.e. the port labelled "high-speed" actually delivers less current.
???
Yes cable 3 has gone bad. You should be good with the others.
Re the car charger - is 500 all you get with cable 1 or 2? Is the charger rated 2A for Android phones? Note that some high current chargers are high current only for Apple products and default to much lower output with non Apple products. It can also be a bad charger.- I had a defective 2A Anker car charger which wouldn't charge above 760. I RMAed it and the replacement works as intended.
Sent from my GT-I9505 using xda app-developers app
Breach1337 said:
Yes cable 3 has gone bad. You should be good with the others.
Re the car charger - is 500 all you get with cable 1 or 2? Is the charger rated 2A for Android phones? Note that some high current chargers are high current only for Apple products and default to much lower output with non Apple products. It can also be a bad charger.- I had a defective 2A Anker car charger which wouldn't charge above 760. I RMAed it and the replacement works as intended.
Sent from my GT-I9505 using xda app-developers app
Click to expand...
Click to collapse
I can get 1200 from the car charger with Cable 1. It's rated at 2A for TomTom devices.
Now this is bizzarre...I just took delivery of a brand new Nexus 10 and immediately tried the charger and cable from that with the Galaxy S4 - I only got 300ma. Can this really be coincidence??
Yes, weird. What about the the other way around - not sure whether the app will work on the Nexus but you can try. Try the S4 charger and cable with the Nexus.
Sent from my GT-I9505 using xda app-developers app
Breach1337 said:
Yes, weird. What about the the other way around - not sure whether the app will work on the Nexus but you can try. Try the S4 charger and cable with the Nexus.
Sent from my GT-I9505 using xda app-developers app
Click to expand...
Click to collapse
The Galaxy Charging Current App doesn't work on the Nexus 10 for some reason - it doesn't respond to a charger being connected to it
Can Samsung really be shipping dodgy cables on a mass scale?
itm said:
The Galaxy Charging Current App doesn't work on the Nexus 10 for some reason - it doesn't respond to a charger being connected to it
Can Samsung really be shipping dodgy cables on a mass scale?
Click to expand...
Click to collapse
I doubt it. No surprises that the app doesn't work on non-Galaxy devices.
By the way how did you try the cable from the Nexus? Isn't is a pogo cable (the wider one)?
Breach1337 said:
By the way how did you try the cable from the Nexus? Isn't is a pogo cable (the wider one)?
Click to expand...
Click to collapse
No it's a standard Micro USB.
itm said:
No it's a standard Micro USB.
Click to expand...
Click to collapse
If you get the same low charge rate with the Nexus charger/cable I'd take it to Samsung and show them the charge rate you're getting. Even if it works with another cable something is definitely not right - let them figure it out.

Galaxy S4 & Prolonged Navigation Use

I own a Galaxy S2. I have tried it using for navigation many times only to find that the battery discharges fully within 2 hours even if the phone is connected to a car charger. I used to think may be its because my car charger doesn't provide enough current to maintain the charge. But recently I found out the culprit. After around 20 minutes of use, the phone battery starts heating up, and it stops charging. I verified this with CPU-Z. It clearly shows battery overheated, power supply connected and not charging.
I was wondering if S4 also has similar issue. Has anybody used it for more than 2 hours with Google Navigation continuously while connected to car charger?
unni_kmr said:
I own a Galaxy S2. I have tried it using for navigation many times only to find that the battery discharges fully within 2 hours even if the phone is connected to a car charger. I used to think may be its because my car charger doesn't provide enough current to maintain the charge. But recently I found out the culprit. After around 20 minutes of use, the phone battery starts heating up, and it stops charging. I verified this with CPU-Z. It clearly shows battery overheated, power supply connected and not charging.
I was wondering if S4 also has similar issue. Has anybody used it for more than 2 hours with Google Navigation continuously while connected to car charger?
Click to expand...
Click to collapse
The most I have used it for is about an hour and half, and while the phone did heat up, it did continue to keep charging while connected to my in-car charger (just a cheap one). I can't remember whether the charger was able to keep up with the discharge though, I think it did. I was driving in bright sunlight, so I had screen brightness on max throughout that time.
.Astiak said:
The most I have used it for is about an hour and half, and while the phone did heat up, it did continue to keep charging while connected to my in-car charger (just a cheap one). I can't remember whether the charger was able to keep up with the discharge though, I think it did. I was driving in bright sunlight, so I had screen brightness on max throughout that time.
Click to expand...
Click to collapse
I've found that the USB cable can have a big impact on the charging current. I had the same problem with my car charger not keeping the phone charged, even though I was using a 2A charger. When I changed the USB cable I managed to quadruple the charging current (from 300ma to 1200ma) and solved the problem (I measured the charging current using the Galaxy Charging Current Lite app).
HTH
itm said:
I've found that the USB cable can have a big impact on the charging current. I had the same problem with my car charger not keeping the phone charged, even though I was using a 2A charger. When I changed the USB cable I managed to quadruple the charging current (from 300ma to 1200ma) and solved the problem (I measured the charging current using the Galaxy Charging Current Lite app).
HTH
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In my case, I believe it was not because of the charging current or cable. I was trying with a car charger capable of charging a laptop, using the wall charger and cable which came with the phone. When the mobile stopped charging, I checked in CPU-Z app. The app was clearly showing status as "power supply connected, not charging and battery overheated". If I unplug the USB cable and connect it back, it will start charging again!
To make sure that I didn't miss anything, I will try with the app you suggested.
Just to update: The Galaxy Charging Current Lite doesn't seem to work with my Galaxy S2. It doesn't show any value.

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