Database Info

[Q] Working replacement charger (normal or car) for Galaxy S with more than 500mA?

Does anybody know a really working replacement charger for the Galaxy S?
I have tried different models but all are not recognized as original charger so the Galaxy is only charging with 500mA.
The Galaxy S does somehow check if it is an original charger and only than switches into charging mode.
You can easily verify this. Just connect your phone with the charger, open the task list. If you see the USB choices menu the phone is in PC mode and only charges with 500mA.

2000 mAh (2A) charger
http://www.dealextreme.com/details.dx/sku.25177
this if you like windshield mount
http://www.dealextreme.com/details.dx/sku.42602
or this if you like air vent mount (i tilt it horizontally, it's more secure and works better with SGS)
http://www.dealextreme.com/details.dx/sku.37823
it actually can use both, vent and/or windshield
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

So you use this charger and it switches the SGS to charging mode. That is good news. All chargers I tried only charged with 500mA alltough they were stated with 2000mA or 1200mA.
How long does it take to fully charge the SGS?

that's the one i use in my car, charging varies depending on use
on short drives it will keep your battery from draing (unlike the 500mAh ones)
on long drives like at least an hour or two can charge a few bars meanwhile keeping GPS on, Bluetooth On, 3G/H data On, Screen On
on long road trips the battery will be fully charged.
but if you were using a 500mAh your battery will be completely sucked dry, on 1000mAh it can keep everything running, but battery might not be at full

Does anyone know why the standard Samsung charger outputs so low? :S
I'm just wondering if they did that for a reason like the phone can't handle too much power

it's rather cost cutting, all phone chargers i've ever had from included items were always around 500mAh

The mains charger I use seems to work the same as my official one
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=300435855427
My car charger comes up with pc mode though which as you say probably means it isn't charging properly (I notice that the charge is about the same when I finish my journey as when I started if I use gps)
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=370391436219
Is there a way to tell how well it is charging? I'm guessing if it thinks it is connecting to pc then it won't charge properly

you can use a battery app to monitor the mAh in the battery
if it charges as you consume, then the mAh should keep going up
but if the mAh keeps going down, then the charger is obviously not providing enough power

badasschris said:
The mains charger I use seems to work the same as my official one
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=300435855427
Click to expand...
Click to collapse
Thanks for the info.
What are the specifications of this charger (how many mA)?
badasschris said:
Is there a way to tell how well it is charging? I'm guessing if it thinks it is connecting to pc then it won't charge properly
Click to expand...
Click to collapse
Unfortunately not really.
There is an widget (http://forum.xda-developers.com/showthread.php?t=723217), but it is not working for the Galaxy.

yes can someone post a decent charger and car charger (preferably on ebay) that charges at a faster rate, the supplied usb cable takes forever to charge my i9000!

I use a mUSB car charger made by Rocketfish (Best Buy brand). Works well, doesn't show "USB Plugged". Was charging pretty quickly even though I had GPS on and Navigation running, which drains battery pretty quickly normally.

TDO said:
Does anybody know a really working replacement charger for the Galaxy S?
I have tried different models but all are not recognized as original charger so the Galaxy is only charging with 500mA.
The Galaxy S does somehow check if it is an original charger and only than switches into charging mode.
You can easily verify this. Just connect your phone with the charger, open the task list. If you see the USB choices menu the phone is in PC mode and only charges with 500mA.
Click to expand...
Click to collapse
I'm using the original charger on a US Vibrant (700mA) and I can still see the USB choices menu.
Is there any other way to check on how much current the Vibrant is using to charge? I have a 1A car and wall charger, but there is no way to tell if they are using 1A or not.

i'm using a max output:1.0A charger works fine. It is a power supply from my old phone which is an adapter with a USB port so i just plugin the galaxy's usb cable and charging happens very fast.

tommy34 said:
i'm using a max output:1.0A charger works fine. It is a power supply from my old phone which is an adapter with a USB port so i just plugin the galaxy's usb cable and charging happens very fast.
Click to expand...
Click to collapse
Did you try this in your car with the screen on full brightness and running GPS software? Important to note because all of these chargers work fine when the phone is sleeping or even idling, but when you throw in full screen brightness, tax the cpu/gpu with software, and use the GPS and radios for triangulation for location data, thats when the power consumption overwhelms the charger.

There's some good information on measuring amperage usage of different chargers in this thread in the Vibrant forum:
http://forum.xda-developers.com/showpost.php?p=7704900&postcount=15
Apparently you can read the current charge your phone is pulling by going to this file on your phone:
/sys/class/power_supply/battery/batt_chg_current
So under the same load conditions (screen brightness, GPS enabled, GPS software running, approximately battery charge level) you should be able to compare how much amperage the phone is able to pull on any given charger.

AllGamer said:
that's the one i use in my car, charging varies depending on use
on short drives it will keep your battery from draing (unlike the 500mAh ones)
on long drives like at least an hour or two can charge a few bars meanwhile keeping GPS on, Bluetooth On, 3G/H data On, Screen On
on long road trips the battery will be fully charged.
but if you were using a 500mAh your battery will be completely sucked dry, on 1000mAh it can keep everything running, but battery might not be at full
Click to expand...
Click to collapse
So is this with the 2000mah charger you linked?:
http://www.dealextreme.com/details.dx/sku.25177
Could you give us some measured numbers, that would be so helpful!
Does anyone know if our phones will stop charging when the battery is full? Do we need chargers with IC chips or will the phone take care of it? I mentioned this in the vibrant forum, but my old dumphones required smart chargers as dumb quick chargers would keep charging away killing the battery, but my Dell Axim PDA was smart enough to shut off charging when full itself.
I'm thinking of getting the 2000mah charger linked previously, but I'm concerned because I haven't been able to determine if it has an IC chip in it, but I don't know if we even need that with our phones.
If we need smart chargers im considering this:
http://www.dealextreme.com/details.dx/sku.40470
Someone in the reviews measured it at 1.1amps and noted it has a decent IC chip.

Android automatically stops charging if it THINKS the batter is full
see this topic
http://forum.xda-developers.com/showthread.php?t=722862
it's more of a nuisance than a good safety feature
also in another topic we found that if your phone is bricked, it will not charge the battery, because there is no OS to handle the charging.

AllGamer said:
Android automatically stops charging if it THINKS the batter is full
see this topic
http://forum.xda-developers.com/showthread.php?t=722862
it's more of a nuisance than a good safety feature
also in another topic we found that if your phone is bricked, it will not charge the battery, because there is no OS to handle the charging.
Click to expand...
Click to collapse
Thanks! Looks like the phone regulates charging itself, and works well enough so long as it doesnt get out of calibration (by you flashing the phone when not at 100% =D) Do you happen to know if it will continue to regulate and stop charging even when the phone is completely turned off? I guess the question is if the android system in charge of this still runs when the main OS is turned off.
Otherwise, for the purposes of our thread, looks like using a 2000mah quick car charger without a verified IC chip should be fine!

As far as i know the 2000mAh charger that I'm using has a build in IC chip (most car chargers now in day has one) as well, but it's hard to tell, unless we can remove the auto safety feature of Android in the SGS.

AllGamer said:
As far as i know the 2000mAh charger that I'm using has a build in IC chip (most car chargers now in day has one) as well, but it's hard to tell, unless we can remove the auto safety feature of Android in the SGS.
Click to expand...
Click to collapse
well you could crack it open and see whats inside =P but I don't that is necessary since we're covered either way, our phones can regulate the charge regardless.
Thanks!
btw i would still LOVE it if you had a chance to see what value you see in /sys/class/power_supply/battery/batt_chg_current when using the 2000 mah charger.

Do different chargers matter?

There are a couple of threads here about different chargers. Some people claim different charging rates, some claim different resulting battery life, and some claims are outright outrageous from an engineering perspective.
So I did a test.
Short Answer: No unless using the computer
Charging from the wall is faster than charging from a computer. But the big NO comes in the form of people claiming improvements from chargers other than the official Samsung one.
Long answer:
So I proceeded to build a test rig and check various chargers in various conditions. The conditions tested were: Phone flat (10% charge), Phone nearly full (80% charge) and Phone Full. In all cases tests were done with the screen showing white, and all wireless on, and the screen showing black and in airplane mode to see what impact it had on different chargers.
The chargers which were tested:
700mA Samsung charger that came with the phone
Computer USB power
500mA generic wall USB charger with Chinese written all over it
800mA Car USB charger
1A iPhone wall USB charger
1A HTC wall USB charger (not sure which phone it comes with)
added a 30A bench supply just to be sure, only 80% test done.
Before I continue I should say that the screen off and screen on as well as airplane mode would have an impact on battery charging rate providing the charging current is constant. I.e. You draw 500mA from the wall when the screen is off and the screen is on, there's a difference which is only likely to be going into the battery.
The method was to build a little pass through device that gave me access to all the USB lines. I broke the 5V line and passed it through 2 multi-meters one measuring current through the line and the other measuring voltage.
Results:
Phone at 10%
0.7A Samsung -> 475mA
Computer -> 83-87mA (no voltage sag)
0.5A Generic -> 345-380mA (Note voltage sagging at 3.8V indicates that the device is underpowered)
0.8A Car -> 478mA
1A iPhone -> 470mA
1A HTC -> 476mA​
Phone at 80%
0.7A Samsung -> 472mA
Computer -> 84-90mA
0.5A Generic (test not repeated due to power concerns)
0.8A Car -> 471mA
1A iPhone -> 475mA
1A HTC -> 471mA
30A Bench -> 470mA​
Phone at fully charged
0.7A Samsung -> 12mA
Computer -> 11-14mA (noisy voltage line)
0.5A -> 12mA
0.8A Car -> 12mA
1A iPhone -> 12mA
1A HTC -> 12mA​
Variances with screen and cell networks:
No changes were observed on any charger between switching the screen off and displaying white as well as switching airplane mode off and on. Until that is the battery was fully charged.
The phone idles at 12mA on airplane mode with the screen off.
With the wireless and cell on the phone jumps between 10mA and 40mA every 2-10 seconds for about 3 seconds. It looks like it is polling the wireless.
With the screen on displaying white full brightness the phone jumps between 130mA and 170mA.
This is interesting as it would suggest that if the cell and wireless are on and the screen is set to maximum brightness you'll likely be draining your battery even through it's on charge if you're plugged into the computer.​
Discussion of results:
If your charger is underpowered expect problems. I wouldn't use a cheap Chinese USB -> wall adapter with the phone. But if your charger is capable of supplying at least 700mA then there is absolutely no difference going beyond that.
The computer only drawing less than 100mA is consistent with the windows driver interface saying that the phone has only requested 100mA from the USB slot. This is a driver issue as the USB2.0 spec should be able to provide 500mA from a USB port providing it is the only device on the hub drawing power.
The claim that you get more battery life out of a different charger is absurd. There were theories floating around about "topping up" batteries requiring a lot of power. Actually it's exactly the opposite. As batteries top up the power demands decrease a LOT. Above about 95% there was a noticeable slow decline in current draw. Eventually even before the battery full notice came on the phone was drawing less than 160mA from the wall, and about 10 seconds after saying battery is full it dropped down to the levels mentioned above.
There are a lot of things that can cause variances in battery life, but using a different charger is not one because you are not using a different charger just providing power from a different source. The charger is a small chip on the board of the SGS made by Maxim. If you provide the phone with 5V and >500mA it will happily draw the 500mA. The only exception being the computer power supply.

Thanks for the time you took for testing this, will soak all this text & do my testing based on your method to see if it does make any noticeable difference or not.

thanks for the info. its very usefull.. I appreciated it..

garbz said:
The computer only drawing less than 100mA is consistent with the windows driver interface saying that the phone has only requested 100mA from the USB slot. This is a driver issue as the USB2.0 spec should be able to provide 500mA from a USB port providing it is the only device on the hub drawing power.
Click to expand...
Click to collapse
So are you saying that a driver upgrade would allow my phone to charge just as quickly from the computer as from the Samsung charger that came with the phone? Presumably, using Linux would also solve this?
I'm actually interested in the heat generated by charging. I recently installed some navigation software and used it for the first time on Thursday. Obviously the screen was on constantly as was GPS. Because I only had around 25% charge when I began my journey, I was charging it continually from the moment I left the house. The sun was shining on the windscreen and very quickly the combination of the sun, continual charging and the draw on the battery from the display etc caused the battery temperature to climb to around 63 degrees C. A status message popped up and told me that charging had ceased because the temperature had become too high.
It's a very clever feature that the software recognises that the temperature has become too high and ceases charging but I'm looking to stop this from happening. I tried turning off wifi etc but this didn't make much difference.
Unfortunately, the cigarette lighter -> USB charger I have doesn't tell me how many mA it's providing. I just wondered whether using a car charger with a lower (or perhaps even higher) mA rating might cause less overheat? Otherwise I'm afraid my phone mightn't be usable as a navigation device.

Wierd, as my Logitech charger (don't know the amperage, around 1-2A I got fot the Performance MX) seems to be charging the phone quite faster than the included flimsy Samsung. (Up to the 90% mark, where it tapers off to trickle charging.)

Dude, that's awesome. You saved me some money with that... I was planning on buying another charger to see if it'll be better.
Good job, and thanks for doing that!

TormodMacleod said:
So are you saying that a driver upgrade would allow my phone to charge just as quickly from the computer as from the Samsung charger that came with the phone? Presumably, using Linux would also solve this?
I'm actually interested in the heat generated by charging.
...
It's a very clever feature that the software recognises that the temperature has become too high and ceases charging but I'm looking to stop this from happening. I tried turning off wifi etc but this didn't make much difference.
...
I just wondered whether using a car charger with a lower (or perhaps even higher) mA rating might cause less overheat? Otherwise I'm afraid my phone mightn't be usable as a navigation device.
Click to expand...
Click to collapse
I wouldn't worry about the heat. As you said yourself it has an internal cut-off. These cut-offs work before the device is damaged not after. High heat may reduce long term life but it's generally not an issue.
Much of the heat actually comes from the power conversion circuit at the top when charging and when the screen is on and not from the battery. While overseas I used my phone for about a month straight as a Mobile AP while on charge, now THAT generates a heck of a lot of heat and I had no ill effect after a month of daily usage for about 6 hours like this, so you should be fine.
Do NOT use an under powered car charger. At best you'll blow a fuse in it, at worst you can cause it to burn. Overloading a charger is not an effective way of limiting current. Not to mention that when overloading the voltage drops which may cause unexpected effects in the phone.
As for the USB thing, no Linux won't help. This isn't a windows issue it's a USB issue. USB2.0 ports provide 100mA of power UNLESS a device specific driver requests more power from the system. It would be a combination of a custom driver for the PC, and probably a change in the phone depending on how the phone's power circuit works (i.e. does the phone tell the power circuit it's plugged into the PC and limit the current?)
Sinotek said:
Dude, that's awesome. You saved me some money with that... I was planning on buying another charger to see if it'll be better.
Good job, and thanks for doing that!
Click to expand...
Click to collapse
You're welcome.
This was more for my own benefit really. Everything I know about electronics would lead to the conclusion of clever trickery, a potential fire hazard when using low power chargers, or that people weren't seeing right. It was driving me nuts not knowing.

I had Theo Same doubys. Thanks for testing. Appreciatie Theo effort made
Sent from my GT-I9000 using XDA App

there ARE differences between chargers.
for example:
with sgs stock charger [700mA] when i download from internet [HSDPA 7.2 Mb] and set brightness to maximum it is discharging instead of charging. the result is even worse with lower charger.
i am using 1200 mA charger from a Nokia N900 and it is doing the job very well.
some say that powerfull chargers shortens the battery life, but i do not care about that.

The data nor the theory back that up.
Suppose the phone did draw a variable current, what's to stop the resulting fire hazard of overloading the charger?
If I knew someone with an N900 I'd be happy to try it for you but given the results so far... actually I do have one more thing I can test.

Flashlight on to keep screen at 100% brightness, downloading JVP, and powered by a 30A !!! powersupply.
End result is it still uses 470mA.
There is nothing to back up the idea that different powerpacks make any difference, and plenty of logical theory as to why it would be a very bloody bad idea to blindly just start drawing power.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

garbz said:
Flashlight on to keep screen at 100% brightness, downloading JVP, and powered by a 30A !!! powersupply.
End result is it still uses 470mA.
There is nothing to back up the idea that different powerpacks make any difference, and plenty of logical theory as to why it would be a very bloody bad idea to blindly just start drawing power.
Click to expand...
Click to collapse
ah, the old computer PSU-> lab power supply trick. Favorite of EE students everywhere

Extraordinary work, garbz.

Nice Job.
So I'll look for a 1A charger in order to get it full short and dirty ;-)

thanks for this my friend kept on telling me that I need a more ''powerful" charger than the one that came with my vibrant :/

Sorry to bump an old topic but thought it worth doing as this is a very good thread to answer the question about chargers. I have a Note which comes with a 1A charger but the lead is short, I need to use an adapter to fit the plug in (as it's EU and I'm in the UK) plus the charger makes a slight high frequency buzzing noise. My N900 charger which is 1200mA works fine (and has a longer lead, is silent and doesn't need an adapter) and I assumed the device would draw the current it needs but was then concerned by some people claiming that would damage the battery, this thread shows that is not the case.
John

There's an explanation here of why different chargers do indeed make a difference:
http://en.wikipedia.org/wiki/Usb#Power
see in particular the note on the Battery Charger Spec.
In particular. my own testing shows I can go from 500ma to 700mA charging current simply by changing a small connector in line between the 7Ahr battery I'm using to charge the phone, and the phone. That's due to the nature of the short on the data pins.
There are proprietary tweaks to this mechanism; e.g. iPhones use voltage signalling between the two data lines and ground to indicate various things to the device.
All of this is only for "hosts", i.e. chargers etc, that don't implement the USB protocol and so can't engage in the normal current negotation that occurs when connecting e.g. the device to a PC.

Yeah they to I was at my uncles place and I pluged the micro-USB for sgs and charged it. I tried moving the lockscreen but the touchscreen wasn't working
Sent from my GT-I9000 using XDA App

THank you for the Review!

thanks for all the info!

Wireless vs wire charger

Hello,
What do you think is better for battery life?
I know that wireless is slower...
I have wireless charger EP-PG920IBE
Thanks!

ZaKaTRoN said:
Hello,
What do you think is better for battery life?
I know that wireless is slower...
I have wireless charger EP-PG920IBE
Thanks!
Click to expand...
Click to collapse
Wired if you need a super quick charge to get max battery life as possible.
Wireless for convenience if you won't be needing the juice for a bit.
At night I always plug in.

ZaKaTRoN said:
Hello,
What do you think is better for battery life?
I know that wireless is slower...
I have wireless charger EP-PG920IBE
Thanks!
Click to expand...
Click to collapse
I use wireless wherever I don't need immediate charging.
Using the Samsung S Charger pad - Wide (here)
It's amazingly fast given that it's only got an output of 900mAh (or so it says)
The whole idea of fast charging sounds unsafe to me (probably isn't) but I have doubts of the life span of a battery that gets constantly charged that fast

Stevles said:
I use wireless wherever I don't need immediate charging.
Using the Samsung S Charger pad - Wide (here)
It's amazingly fast given that it's only got an output of 900mAh (or so it says)
The whole idea of fast charging sounds unsafe to me (probably isn't) but I have doubts of the life span of a battery that gets constantly charged that fast
Click to expand...
Click to collapse
For that reason my question, i think wire charger is too fast, and maybe can damage battery life. Not sure...
I have this wireless charger,
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
It's a present from Samsung pre-ordening S6.
Maybe at day I will use wire, and at night wireless.

ZaKaTRoN said:
For that reason my question, i think wire charger is too fast, and maybe can damage battery life. Not sure...
I have this wireless charger,
It's a present from Samsung pre-ordening S6.
Maybe at day I will use wire, and at night wireless.
Click to expand...
Click to collapse
Yeah if you need charge during the day I'd be go wired for sure just in case you need to head out at sudden notice or something.. Wireless is great when you know you have time on your hands

Stevles said:
Yeah if you need charge during the day I'd be go wired for sure just in case you need to head out at sudden notice or something.. Wireless is great when you know you have time on your hands
Click to expand...
Click to collapse
One problem from wireless one, is that you can't use phone, because you're broking charging cycle (it will affects battery life). For example, a call.
So, wire even if at day I have time. And wireless at night when I'm sleeping.
For me is the best option. Is it?

ZaKaTRoN said:
One problem from wireless one, is that you can't use phone, because you're broking charging cycle (it will affects battery life). For example, a call.
So, wire even if at day I have time. And wireless at night when I'm sleeping.
For me is the best option. Is it?
Click to expand...
Click to collapse
Yeah fair point

I use wireless everywhere but the car. I have wireless bedside, and on my desk at work. It's super convenient and even though it won't charge during phone calls, keeping it out he dock keeps it charged up. If I am heavy on it, I just unplug the dock and plug in directly. In the car is a different ballgame. In Texas, the summers are hot, and I've seen phones shut off because of overheating. I don't want to add the heat from a wireless charger to that. Instead, I have a quick charge 2.0 charger to top off my phone quickly during trips.
Sent from my SM-G920T using Tapatalk

Here are some charging numbers I took for just 10 minutes. The percentage shown is the amount gained in the 10 minute window. I made sure the phone just changed to the certain percentage before testing to make sure they were all the same. Meaning If the phone was at 34% when I plugged it in or ont he wireless charger, I waited until it changed to 35% and then did my 10 minute window.
Fast charge Charger
10 minutes 17%
Wireless charger (Duracell Powermat)
10 minutes 6%
Normal Samsung 1amp Charger
10 minutes 8%
So the wireless wasn't much slower than a normal charger

Could someone please recommend a Good fast charging wireless charger for the tmobile Gs6. Thanks In advance!!!
Sent from my SM-G920T using XDA Free mobile app

xda23 said:
Could someone please recommend a Good fast charging wireless charger for the tmobile Gs6. Thanks In advance!!!
Sent from my SM-G920T using XDA Free mobile app
Click to expand...
Click to collapse
no because it doesn't exist...

bloodrain954 said:
no because it doesn't exist...
Click to expand...
Click to collapse
Lol
Sent from my SM-G920T using XDA Free mobile app

likearaptor said:
Here are some charging numbers I took for just 10 minutes. The percentage shown is the amount gained in the 10 minute window. I made sure the phone just changed to the certain percentage before testing to make sure they were all the same. Meaning If the phone was at 34% when I plugged it in or ont he wireless charger, I waited until it changed to 35% and then did my 10 minute window.
Fast charge Charger
10 minutes 17%
Wireless charger (Duracell Powermat)
10 minutes 6%
Normal Samsung 1amp Charger
10 minutes 8%
So the wireless wasn't much slower than a normal charger
Click to expand...
Click to collapse
I just did a test of the Samsung Wireless base.
It charged from 55% to 100% in about 1:23:30. Not as fast as 2A wired, but still a decent rate.
{UPDATE}
S6 Adaptive Fast Charger: 55%-100% in 00:50:00. I expect the S4 2A charger to be faster, which will be my next test. And if so, "Adaptive Fast Charging" is very misleading as the emphasis seems to be on "fast" as opposed to adaptive", as most people care about speed and not Amp switching.
{UPDATE 2}
I have no screenshot for this because my phone reset the stopwatch when I tried to tale a screenshot. (It takes me about 6-7 tries to take a screenshot - it usually just goes to Google app when I try to screenshot. Very annoying.)
The constant 2A Samsung charger went from 55% to 100% in 00:53:00, so it seems the "Adaptive Fast Charger" was 3min faster. I'm very surprised, but the 3min doesn't make any difference in my life.

xda23 said:
Could someone please recommend a Good fast charging wireless charger for the tmobile Gs6. Thanks In advance!!!
Sent from my SM-G920T using XDA Free mobile app
Click to expand...
Click to collapse
http://www.amazon.com/Wireless-Comp...&sr=8-1&keywords=s6+wireless+charger,+koolpad
Cheap, and works with Otterbox Defender case on my S6.
Fast? I guess that depends on how you define it.

I´m wondering whether all wireless chargers works the same? I mean if they charge evenly fast and with same efficiency, as they all are the same Qi standard?

Lukeenho said:
I´m wondering whether all wireless chargers works the same? I mean if they charge evenly fast and with same efficiency, as they all are the same Qi standard?
Click to expand...
Click to collapse
I'm guessing no. In almost everything made, there is a "standard" that the item is made to, but varying qualities of build and performance. Take Bluetooth, for example. All items are made to a specific Bluetooth spec and standard, but not all accessories, transmitters, and receivers work to equal quality. I think it's a matter of the lesser accessories being good enough for you.
And keep in mind that I'm not saying that the expensive ones will always work better and the cheaper worse - just that you can't expect them to all work the same. But one thing that is true the majority the time - "you get what you pay for". And sometimes you don't.

I think that wireless charging can be handy. For instance, at work, I sit at a desk in front of a computer all day. I'll make calls a few times throughout the day to clients, and whenever I'm not on the phone, I plop the phone onto the wireless charger, and let it charge up a little. Usually, when I go home at 4:30, i'll still have a full charge. I'll drain the full charge with games or whatever while I'm at home, and I always plug it in before I go to bed. I've never found myself with a dead phone, but If you were the kind of person who was on the move all day talking to people, having a wireless charger might not be very beneficial.
Here's the wired charger I use
And the Wireless.

DevonSloan said:
And if so, "Adaptive Fast Charging" is very misleading as the emphasis seems to be on "fast" as opposed to adaptive", as most people care about speed and not Amp switching.
Click to expand...
Click to collapse
The adaptive fast charging speeds up charging when the battery is low. As the battery get closer to full the fast charging slows down to prevent damage to the battery. If you redid your comparison from 5% charge to 50% charge you'd see a much larger difference between the normal and fast charger.

I have 3 off these around the house, no issues at all.
And they come in all kinds of colors/styles.
http://tinyurl.com/lbmryn5

ramk13 said:
The adaptive fast charging speeds up charging when the battery is low. As the battery get closer to full the fast charging slows down to prevent damage to the battery. If you redid your comparison from 5% charge to 50% charge you'd see a much larger difference between the normal and fast charger.
Click to expand...
Click to collapse
Ah. I'll never let my battery get that low, though, so I guess it's not of much benefit to me.

Battery charging rate

Hey everyone I'm trying to gauge if my note pro is faulty or if this is just normal for them. It seems to take a really long time to charge and I've even had the battery percentage go down While plugged in and doing some light browsing. Here's a screenshot of the battery info while charging and it seems like that's a really long for it to charge. I appreciate any insight thanks.
Sent from my SM-P900 using XDA Free mobile app

If you are using less than 2 amp charger it will not keep up with tablet on. Tablet off charging time doubles if 1 amp charger. I use a standard micro USB cable usually, the usb 3 cable charges faster when using 2 amp charger I believe.
Sent from my SAMSUNG-SM-P907A using XDA Free mobile app

Not sure why the screenshoot I took didn't show but let me try again.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I've had the tablet discharge even when using the 2A charger, but it was microusb not usb3. If I'm using the 2A brick does the microusb vs usb3 cable make a difference?
The screenshoot was taken while plugged into a microusb cable into a 1A brick. I get that the 1A will be slower, but 2 hours to go 15% seems crazy and the tablet was merely powered on and connected to wifi, not in use.

Rockman195 said:
Hey everyone I'm trying to gauge if my note pro is faulty or if this is just normal for them. It seems to take a really long time to charge and I've even had the battery percentage go down While plugged in and doing some light browsing. Here's a screenshot of the battery info while charging and it seems like that's a really long for it to charge. I appreciate any insight thanks.
Sent from my SM-P900 using XDA Free mobile app
Click to expand...
Click to collapse
Common problem of Galaxy Note and Tab Pro: cracked battery connector. Resolder battery connector will fix : quick discharge, long charge time, not fully charged, battery capacity fluctuation....etc...
This black battery connector was re soldered already to fix this problem:
As seen in above picture, battery cables are not fully contact with pins of male battery connector also are the source of problem.
The fix is simple: pushing the opening closer, you need a magnified glass and thin knife to do this:
After the fix, this is a good connection between male and female battery connector:

It takes Exynos (which a P900 is) Note 12's over 8 hours to fully charge. I had a Exynos 10.1-14 and it took seven hours. It's one of the reasons I got a Snapdragon Note 12 because it cuts charging time dramatically.

A few things to consider:
Never, absolutely never use a 1A charger with a device this powerful. It will drain more than it charges.
1A chargers are not powerful enough for modern quadcore devices. Even the Note 3 (which has the same hardware) requires 2 hours to charge 30% when using a 1A charger. (It has a significantly smaller battery than the NotePro)
USB2/MicroUSB charges at a rate of 500mA.
USB3 charges at a rate of 900mA.
(The small side of the USB3 plug is what makes it USB3, the other side is just a regular MicroUSB 2.0)
This also applies to the amount of power the cable itself will transfer. A such, using a USB2.0 cable will severely limit charging speed.
Another thing of importance is the device itself. The P905 has Qualcomm Fastcharge. The P900 does not. That amounts to several hours of difference in charging rate.

ShadowLea said:
A few things to consider:
Never, absolutely never use a 1A charger with a device this powerful. It will drain more than it charges.
1A chargers are not powerful enough for modern quadcore devices. Even the Note 3 (which has the same hardware) requires 2 hours to charge 30% when using a 1A charger. (It has a significantly smaller battery than the NotePro)
USB2/MicroUSB charges at a rate of 500mA.
USB3 charges at a rate of 900mA.
(The small side of the USB3 plug is what makes it USB3, the other side is just a regular MicroUSB 2.0)
This also applies to the amount of power the cable itself will transfer. A such, using a USB2.0 cable will severely limit charging speed.
Another thing of importance is the device itself. The P905 has Qualcomm Fastcharge. The P900 does not. That amounts to several hours of difference in charging rate.
Click to expand...
Click to collapse
Interesting and good to know. Would a Micro USB to usb3 adapter do anything on a cable or no? Ordered some 2a power bricks since I only had one previously
Sent from my SAMSUNG-SM-G920A using XDA Free mobile app

ShadowLea said:
Using a USB2.0 cable will severely limit charging speed.
Click to expand...
Click to collapse
Not true. The way Samsung implented USB 3.0 the sole advantage is transferring files from the device more quickly. So no need to waste money on clunky USB 3.0 cables that arent compatible with other mobile devices. From Anandtech...
There’s been a lot of talk about the presence of USB 3.0, even though the micro B connector type has been around for considerable time already and in a ton of devices. The Note 3 just has the misfortune of apparently being many people’s first exposure to the connector, whose awkward double lobed shape gives it forwards compatibility with microUSB 2.0. The rightmost region is just the familiar microUSB 2.0 connector, the left contains the pins for SuperSpeed signaling for 3.0. Plug something into the right 2.0 jack and you get 2.0 speed for transfers and charging. 3.0 at present should give you faster transfer rate, and eventually faster charging, but the Note 3 continues to use Samsung’s 2.0 amp charging spec and rate, but more on that later.
Charging is an interesting story on the Note 3, but primarily because of what doesn’t change. The Note 3 continues to use Samsung’s tablet charging specification and charger, which has 2 amps of maximum output. The Note 3 draws 2 amps over a considerable amount of the charging curve, like other Samsung devices (in the linear part of the charge curve). USB 3.0 doesn’t change things up here quite yet with the new supported charge voltages that are coming eventually with the power delivery specification.
The move to USB 3.0 is interesting and could be a big benefit when it comes to getting large files off of the device (the NAND/eMMC isn't quick enough to make USB 3 any faster at putting data on the phone).
http://www.anandtech.com/show/7376/samsung-galaxy-note-3-review
Click to expand...
Click to collapse

BarryH_GEG said:
Not true. The way Samsung implented USB 3.0 the sole advantage is transferring files from the device more quickly. So no need to waste money on clunky USB 3.0 cables that arent compatible with other mobile devices. From Anandtech...
[/i]
Click to expand...
Click to collapse
Agree . . I may not have an inline amp meter to verify for sure but based on my own charge rate observations using GSam Battery Monitor Pro I see no noticeable difference between a 2.0 vs stock 3.0 cable using the stock charger.
Those charge ratings quoted by Shadowlea I believe are for the USB specs themselves which may or may not be adhered to when the device is plugged into a computer but don't necessarily translate to using 2.0 vs 3.0 cables on 2 amp chargers.

muzzy996 said:
Those charge ratings quoted by Shadowlea I believe are for the USB specs themselves which may or may not be adhered to when the device is plugged into a computer but don't necessarily translate to using 2.0 vs 3.0 cables on 2 amp chargers.
Click to expand...
Click to collapse
If we have Quick Charge, and I'm not sure we do, it's 1.0. The Note 4 was the first to support adaptive fast charging which Qualcomm introduced in QC 2.0.
From Qualcomm...
In laboratory tests using a 3300mAh battery, a Quick Charge 2.0 enabled device went from 0% to 60% charge in 30 minutes, while a device without Quick Charge 2.0 using a conventional (5 volt, 1 amp) charger achieved just a 12% gain in the same 30 minutes. A device with Quick Charge 1.0 managed a 30% charge in that time period.
Click to expand...
Click to collapse

BarryH_GEG said:
Not true. The way Samsung implented USB 3.0 the sole advantage is transferring files from the device more quickly. So no need to waste money on clunky USB 3.0 cables that arent compatible with other mobile devices. From Anandtech...
[/i]
Click to expand...
Click to collapse
When using the same charger: (Namely the original NotePro charger)
(Ignore the average rate, that's useless given the fact that I just installed the app).
With Original Samsung TabPro USB 2.0 MicroUSB cable:
With Original Samsung NotePro USB 3.0 Cable:
Both cables are the same age, both are official and neither is damaged. Fun fact, the NotePro cable is 1 meter longer, but still charges faster.
I get the exact same results on my Note 3 and my S5.
The NotePro can't be charged through a computer's USB port, by the way. Not without turning the device off completely and waiting three days.

You can't charge any faster than the 2A spec Samsung's provided no matter what charger and cable you use. Some non-Samsung cables and chargers may degrade charging but peak is peak. There are two sites I don't question and they're Anandtech and GSMArena. I accept what I quoted as truth. That and I personally see no charging difference using my stock 3.0 Cable and charger and my Note 5's fast charger and cable used in multiple combinations.
BTW, we do have Quick Charge 1.0; it started being included in Snapdragon S3's. It's 30% faster than a 1A charger but Samsung's always supported 2A so I don't know what the actual benefit is to us. 15%?

Samsung phone "Cable Charging" instead of "Fast Charging" after using defective charger.

Hello couple days ago I bought Samsung Galaxy A33 5G.
I've charged it with other fast chargers and there was not any problems.
Yesterday I bought original Samsung 25W Fast Charger. I've tried to charge my phone but after 2 minutes the phone stopped charging and started again after 1-2 seconds. It repeated at least over 50 times before I realized that.
Went to the store and changed the charger.
Everything worked but phone is not "Fast Charging". It Fast Charges for 5-10 seconds and then goes to "Cable Charging".
What should I do to make the phone to fast charge again? And yes, Fast Charge option is on in settings.
And sorry for my bad English.
Edit: I've noticed that when I shake the charger, there is something that is moving. (1st and 2nd charger). Is it built like that?

There should be no loose parts in the 25w brick, I have two.
Use the Samsung cable that came with the charger, make sure it's OEM and not a knock off.
Toggle fast charging on/off 3 times.
Clear system cache and try a hard reboot.
Try charging with phone power off.
Fast charging will not engage if the battery temperature is too low (>55-65F) or high (about >102F). Fast charging ramps down at 80% or so then again at 90% at which point it slow charges.
Erratic fast charging may indicate a battery failure, any swelling is a failure. Li's can fail at any time but normally it's the older degraded ones that fail.

blackhawk said:
There should be no loose parts in the 25w brick, I have two.
Use the Samsung cable that came with the charger, make sure it's OEM and not a knock off.
Toggle fast charging on/off 3 times.
Clear system cache and try a hard reboot.
Try charging with phone power off.
Fast charging will not engage if the battery temperature is too low (>55-65F) or high (about >102F). Fast charging ramps down at 80% or so then again at 90% at which point it slow charges.
Erratic fast charging may indicate a battery failure, any swelling is a failure. Li's can fail at any time but normally it's the older degraded ones that fail.
Click to expand...
Click to collapse
I think there should be no loose parts also, I also had 2 (returned one) but both of them had loose parts.
I tried with the Samsung's original cable and with other non original cable.
Tried the fast charging on/off even more than 3 times.
I will try hard reboot next time before I charge the phone.
Also I will try charging it while phone is off.
I just charged the phone with 18W charger, and it shows that is "Fast Charging". So is the Samsung charger faulty again?

Sounds like 2 defective bricks.
Should be made in Nam, not China.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

blackhawk said:
Sounds like 2 defective bricks.
Should be made in Nam, not China.
View attachment 5768541View attachment 5768543View attachment 5768547
Click to expand...
Click to collapse
Yes same charger but mine is with EU Plug, maybe that's why it says Made in China (but I'm not sure).
BTW thanks for helping.

MNiyazi said:
Yes same charger but mine is with EU Plug, maybe that's why it says Made in China (but I'm not sure).
BTW thanks for helping.
Click to expand...
Click to collapse
Don't know but the made in China is suspicious.
Samsung's are made in Nam and India, not China to the best of my knowledge. SK knows who their enemies are...
Ask Samsung tech support.
There are knockoffs out there. Meh, one should have come with the phone like they use to do. Chintzy Samsung.

blackhawk said:
Don't know but the made in China is suspicious.
Samsung's are made in Nam and India, not China to the best of my knowledge. SK knows who their enemies are...
Ask Samsung tech support.
There are knockoffs out there. Meh, one should have come with the phone like they use to do. Chintzy Samsung.
Click to expand...
Click to collapse
BTW how am I going to know if phone is fast charging when powered off?
Edit: I guess it was charging slow because for 5 minutes it charged 4%. I think that is slow charge since it was charging faster with my 18W charger

MNiyazi said:
BTW how am I going to know if phone is fast charging when powered off?
Edit: I guess it was charging slow because for 5 minutes it charged 4%. I think that is slow charge since it was charging faster with my 18W charger
Click to expand...
Click to collapse
It needs 25* or more watts to fast charge. Fast charging is about 2%@minute. That's pretty fast especially if you do midrange power cycling. Find another vendor... got my 2nd one from Walmart. ID originals as they are made in Nam, not China. The N10+'s come with one in the box.
They even will charge at 60VAC! Very reliable still using the orginal cable after 3 years. Leave it loose, don't roll it up for longer life.
Again ideal battery start temperature is 82-90F.
Enough temperature is needed for an Li to charge correctly as it is an electrochemical reaction. It's actually an endothermic reaction but the internal resistance of the plates and bus connectors turn it exothermic.
An original, not expensive either:
*a 45 watt brick doesn't shorten the fast charging time by much. 25 w is best. Always use the Samsung 3 foot cable included, other cables may not work. Deviating from OEM charge equipment makes troubleshooting much more difficult, not recommended.

Im using the Samsung OEM Fast Wireless pad and brick, my S21 ultra charges from 4 to 100 in about 1 hour 30 minutes.

blackhawk said:
It needs 25* or more watts to fast charge. Fast charging is about 2%@minute. That's pretty fast especially if you do midrange power cycling. Find another vendor... got my 2nd one from Walmart. ID originals as they are made in Nam, not China. The N10+'s come with one in the box.
They even will charge at 60VAC! Very reliable still using the orginal cable after 3 years. Leave it loose, don't roll it up for longer life.
Again ideal battery start temperature is 82-90F.
Enough temperature is needed for an Li to charge correctly as it is an electrochemical reaction. It's actually an endothermic reaction but the internal resistance of the plates and bus connectors turn it exothermic.
An original, not expensive either:
View attachment 5769359
*a 45 watt brick doesn't shorten the fast charging time by much. 25 w is best. Always use the Samsung 3 foot cable included, other cables may not work. Deviating from OEM charge equipment makes troubleshooting much more difficult, not recommended.
Click to expand...
Click to collapse
Just bought another charger. This time from a different store.
I checked the charger and it's made in Vietnam.
The charger works perfectly and it says that is super fast charging. The "fake" one was slow charging.