Develop Bugs

A way to charge faster?

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Hey, do you all know a way to charge the phone faster? maybe a kernel or something? It charges so slow and thats the only reason why i would return this phone. It's very annoying.
Solution: Get the charger in the pic below. it's amazing how much faster it charges and it charges the battery that is in the charger as well. 40 bucks.. def worth it.

I have noticed that when my phone battery is really low, if plugged into a usb port via charging cable that came with the phone, the phone still died. It does take a long time to charge though, is this due to the larger battery?

Charging really sucks
I noticed that yesterday more than ever. I was driving for many hours, and the whole time I had my phone plugged in. After a 13 hour day my phone would still not go above 15%. Granted I was using google maps and listening to podcasts on doggcatcher, but my evo never had a problem charging to 100% doing the same thing. Then I noticed the red notification light that turns on while charging was not even on. I turned off the phone removed the battery for a minute, then when I turned it back on and pugged it in the light came back on again. I hope I didnt just get a defective phone.

It's samsung i think. the regular galaxy s phones charge slow too. smh very annoying. the battery has nothing to do with it because I had an extended batter 3200MAH that be charging father than this on the Nexus 1 (HTC).. htc has better changing capabilties

Only way to charge it faster is to turn the phone off when charging. This is not a phone where you can throw it in the charger for 30 minutes and expect a quick recharge to last you through the evening (like HTC or Motorola phones).

Econ212 said:
I have noticed that when my phone battery is really low, if plugged into a usb port via charging cable that came with the phone, the phone still died. It does take a long time to charge though, is this due to the larger battery?
Click to expand...
Click to collapse
USB can provide .5A. The phone, when pushed to the limit can draw more than that which may be why your phone was actually discharging.
---------- Post added at 11:33 AM ---------- Previous post was at 11:32 AM ----------
stepinmyworld said:
Hey, do you all know a way to charge the phone faster? maybe a kernel or something? It charges so slow and thats the only reason why i would return this phone. It's very annoying.
Click to expand...
Click to collapse
How long is long? 2-3 hours for a full charge is normal when on AC power, 4-6 when on USB.
This assumes your are not actively using the phone, aka no gaming, netflix, etc.

i actually think this thing charges fast compared to the evo 3d. Mine charges fully from dead in about 1 1/2 hours.
i use the charger brick from my ipod instead of the samsung one though. It may put out more juice then that jacked up samsung one. that thing stinks, plus causes screen issues

I ran in to this with my EVO when Running Bluetooth, Full Bright and GPS while in the car. I purchased a 2amp charger for the car and have not had the same issues since going to 2.0amp.

Well I have tried this twice, and saw that battery charged faster. (but that's just me... Have not really tested to prove it really makes a difference)
I installed battery calibration from market and did that full charge and unplugged 10x then let drain. When I charged the phone it did it in record time since I had the phone.
We now return you to your regularly scheduled program...

Econ212 said:
I have noticed that when my phone battery is really low, if plugged into a usb port via charging cable that came with the phone, the phone still died. It does take a long time to charge though, is this due to the larger battery?
Click to expand...
Click to collapse
The phone will only draw 450mA from a USB port. It can easily use more than that while running misc. tasks. You should only use a high Amperage charger when your battery is low (1A or higher) and limit USB cable use to when you're just transferring data or when you don't have another option.
Also the phone only uses 650mA MAX to charge the battery. The difference in what the 1A stock charger is able to provide should presumably allow you to run your phone at the same time without reducing the charging current. If this is true than a 1.5-2A charger would be ideal, allowing a fully dead battery to be charged in about 3 hours regardless of use.
BTW, this info is taken based on the work done with the i9100 sgs2. They currently have kernels that raise the charging rates to 550 and 750 respectively.

walord said:
The phone will only draw 450mA from a USB port. It can easily use more than that while running misc. tasks. You should only use a high Amperage charger when your battery is low (1A or higher) and limit USB cable use to when you're just transferring data or when you don't have another option.
Also the phone only uses 650mA MAX to charge the battery. The difference in what the 1A stock charger is able to provide should presumably allow you to run your phone at the same time without reducing the charging current. If this is true than a 1.5-2A charger would be ideal, allowing a fully dead battery to be charged in about 3 hours regardless of use.
BTW, this info is taken based on the work done with the i9100 sgs2. They currently have kernels that raise the charging rates to 550 and 750 respectively.
Click to expand...
Click to collapse
Well we have someone a few post back that claims to charge battery from dead to full in 1 and 1/2 hours.
Mine takes at least 3 hrs to charge. My Nexus S takes 3 and 1/2 to 6 hrs.
I have use chargers ranging from .7a to 2a.

these top-shelf phones tend to user more power than necessary for a lot of functions. first off, if you're rooted try lowering the max frequency with setcpu and / or change the governor to conservative, or (recommended) on-demand with the power-save bias to about 450-700 so it increases to say 800mhz instead of 1200 (or about 250-400 bias for standard usage).
if you use the navigator a lot, you can put it in airplane mode after about 5min of travel and out will cache the rest of your route. gps still works in airplane mode. if you're at work you could always use airplane mode between breaks.
also try setting your display mode to standard instead of dynamic (if not already) when you have no plans to use apps that beg to be eye-candy.
remove unnecessary bloat widgets like calendar, google search, and task manager shortcut (they run services) and kill background data as often as you can.
airplane mode and/or max 500 freq while charging.
if you're using zedomax OC kernel v1 2 or 3, reboot the phone before you leave it idle for extended periods of time because it seems to have trouble underclocking again, our update to the v4.1 beta kernel (or newer) available on downloadandroidrom.com
this post took 8% of my battery

What are the odds we will get SBC coded into our kernel's, or was/is this just a HTC thing?

Mine works perfect. From about 15-20%, if I plug it in the wall, I'll get to full in about 1.5 hours.

wait how you do it?

There's an app 4 the Touch Pro2 called nueBattery2 that'd actually increase the draw from USB from .5mA to 1mA. Is this not possible 4 the E4GT?

The phone has to think it's plugged into AC to ask for more than 450 mah.
I believe it checks this via shorted data cables of the USB cord. The stock charger shorts those cables so the phone knows it can draw more amps. Settings/about phone /status will show you if its drawing 450 (USB) or more (AC). Using a non-oem wall charger can result in (USB) charging instead of AC even if the charger says 1000mah. Using a pure charging USB cable with the data wires setup correctly, plugged into a computer can give you AC charge rate albeit no data connection to your computer.

whatsitsnamenow said:
Only way to charge it faster is to turn the phone off when charging. This is not a phone where you can throw it in the charger for 30 minutes and expect a quick recharge to last you through the evening (like HTC or Motorola phones).
Click to expand...
Click to collapse
+1 on this. Noticed that if I turn the phone off when charging it charges twice as fast.

R1ptide said:
The phone has to think it's plugged into AC to ask for more than 450 mah.
I believe it checks this via shorted data cables of the USB cord. The stock charger shorts those cables so the phone knows it can draw more amps. Settings/about phone /status will show you if its drawing 450 (USB) or more (AC). Using a non-oem wall charger can result in (USB) charging instead of AC even if the charger says 1000mah. Using a pure charging USB cable with the data wires setup correctly, plugged into a computer can give you AC charge rate albeit no data connection to your computer.
Click to expand...
Click to collapse
That is correct. I use a USB cigarette outlet adapter in my car and running navigation and playing music at the same time would kill the battery while charging... until i shorted the two middle pins in the adapter.

walord said:
...i shorted the two middle pins in the adapter.
Click to expand...
Click to collapse
So, would this wrk w/ USB cables, & is there a way 2 still allow sync? Couldja post a pic or instructions?

Long charging duration. What should I do? Confused! Please advice.

Guys this issue is annoying me. My device is having some charging problems. I have measured the charging time for last two charges, and its taking 3 hours 40 mins for 10% to 100%, and 4 hours from 0% to 100%. Where most people are saying it takes around 3 hours, from a complete drain to full 100%.
So have any of you guys ever measured the actual time of charging? A lots of comments I see say around this or around that, or from 2 hours to 3 hours, well that's not what I need. If anyone has measured the time then please post here. I'm thinking about going to SC, but I don't wanna go there until I'm totally sure that there is a problem.
PS: I'm talking about Stock charger, (2A) plugged in AC power source. And device should be on, not off.
Btw- There should be a technical answer to this, the charging current is 2A and the battery is 3100 mAh, so how could I do the math?
Thanks in advance.
Sent from my GT-N7100

I don't know the math stuff but why don't you try calibrating the battery - worth trying !

Knowing that info is only half the truth. How the phone charges the battery and how much energy your phone uses during the charge matters too.
Sent from my GT-N7100 using Tapatalk 2

The time taken to charge is a pretty simple mathematical formula. But the rest of the calculation is complicated.
If you phone is on, how bright is the screen, is the display on or off, are you on wifi or network data, are you syncing email every 15 minutes or every hour, are you using the phone to send messages during charge, have you got gmail, dropbox, facebook, instagram, whatsapp, etc etc etc all doing a sync at regular intervals during the charge?
All of those things will use up some of the charge as its going in, so the charger is fighting against you.
I've been charging off usb at work and struggled to gain 20% in 8 hours because of my usage pattern.

Theoretical time for charge is about 1:30 hrs. Reality, start and ending charge should slow down (for safety), heat slow downs, plus usage of phone as spoken above I guess it could take up to 3 hrs.
It's not great to do a full charge regularly. I tend to keep mine between 40-90% for maximum life cycle of battery.
Perhaps try resetting battery stats? Try a different 2a charger?
Sent from my GT-N7105 using Tapatalk 2

wisewood said:
The time taken to charge is a pretty simple mathematical formula. But the rest of the calculation is complicated.
If you phone is on, how bright is the screen, is the display on or off, are you on wifi or network data, are you syncing email every 15 minutes or every hour, are you using the phone to send messages during charge, have you got gmail, dropbox, facebook, instagram, whatsapp, etc etc etc all doing a sync at regular intervals during the charge?
All of those things will use up some of the charge as its going in, so the charger is fighting against you.
I've been charging off usb at work and struggled to gain 20% in 8 hours because of my usage pattern.
Click to expand...
Click to collapse
I was testing how long it takes to charge, so I didn't even touch the phone while it was charging.
JLneonhug said:
Theoretical time for charge is about 1:30 hrs. Reality, start and ending charge should slow down (for safety), heat slow downs, plus usage of phone as spoken above I guess it could take up to 3 hrs.
It's not great to do a full charge regularly. I tend to keep mine between 40-90% for maximum life cycle of battery.
Perhaps try resetting battery stats? Try a different 2a charger?
Sent from my GT-N7105 using Tapatalk 2
Click to expand...
Click to collapse
1:30 hours? Could you kindly explain how?
And I've wiped my device fully, also reseted battery stats.
One thing I'd to next is, I'll turn the device off and see how long it takes then.
Sent from my GT-N7100

jujuburi said:
Guys this issue is annoying me. My device is having some charging problems. I have measured the charging time for last two charges, and its taking 3 hours 40 mins for 10% to 100%, and 4 hours from 0% to 100%. Where most people are saying it takes around 3 hours, from a complete drain to full 100%.
So have any of you guys ever measured the actual time of charging? A lots of comments I see say around this or around that, or from 2 hours to 3 hours, well that's not what I need. If anyone has measured the time then please post here. I'm thinking about going to SC, but I don't wanna go there until I'm totally sure that there is a problem.
PS: I'm talking about Stock charger, (2A) plugged in AC power source. And device should be on, not off.
Btw- There should be a technical answer to this, the charging current is 2A and the battery is 3100 mAh, so how could I do the math?
Thanks in advance.
Sent from my GT-N7100
Click to expand...
Click to collapse
Mine takes 2.5 hrs to charge from 10% to 100% with phone on using stock wall charger and cable (when charged continuosly with no activity on phone). It charged from 1% to 96% in 2.5 hrs with phone switched off (switched it on exactly after 2.5 hrs to check). But, usually i avoid charging my phones to full 100% (also always charge it when at 10%).

Dpk1 said:
Mine takes 2.5 hrs to charge from 10% to 100% with phone on using stock wall charger and cable (when charged continuosly with no activity on phone). It charged from 1% to 96% in 2.5 hrs with phone switched off (switched it on exactly after 2.5 hrs to check). But, usually i avoid charging my phones to full 100% (also always charge it when at 10%).
Click to expand...
Click to collapse
Try with another note 2 charger first. The thing with these chargers is they will behave erratically when there is voltage fluctuation or if you use in a train and other cases. So go to SC and tell them its taking almost double time for me to get charged. They will replace the charger as well the cable. My cousin has the same problem with s3. He got it replaced by the SC.
Sent from my GT-N7100 using Tapatalk 2

Thanks Chaitanya. But the SC guys are so stupid here. First thing they do always are to take the phone in their custody and deal with it badly. Still I will ask them to replace the charger and check.

Some of us have noted that if you let the screen time out and not manually shut screen off after connecting the charger. ..The charging is faster. . If you manually shut off the screen. .. The charging is slow.... It is weird but don't know why. .it definitely is happening
handwritten from my note 2 (N7100)

Mine takes about 3 hours to charge fully from 15 %
Sent from my GT-N7100 using xda app-developers app

Op: I said theoretical it will take 1:30.. Realistically it should slow down during stages due to safety reasons.
Mine took probably 3 hours the other day I ran it down, but this was combination of using 1a and 2a charger.
I think on the note 2 it doesn't ramp up power till it gets to 20-30%. Took a while to get there from 2%. If only battery widget was working on the note 2..then I could confirm.
Sent from my GT-N7105 using Tapatalk 2

Are you using the charger that came with Note2 ? I was using my old blackberry charger and it took for ever to charge the phone.
The output of the Note2's charger is more than twice the output of my blackberry charger.

^ Yeah, of course I am using the stock charger that came with Note 2! I'd not create this topic if I had used another charger.
Anyway, after a long week in Service Center now my phone is back, they provided me a new charging adapter (not the cable) and I was very happy because I thought everything will be smooth and like before but guess what? No improvement. It's still taking long! I just measured it for 30 mins exactly, it went from 70 to 83%, i.e 13%, where it should be 24% as stated in this thread,
http://forum.xda-developers.com/showpost.php?p=33585646&postcount=31
Now I am really angry. I will try with another Note 2 USB cable first, if that fails, there is something wrong with the device, I guess?

jujuburi said:
^ Yeah, of course I am using the stock charger that came with Note 2! I'd not create this topic if I had used another charger.
Anyway, after a long week in Service Center now my phone is back, they provided me a new charging adapter (not the cable) and I was very happy because I thought everything will be smooth and like before but guess what? No improvement. It's still taking long! I just measured it for 30 mins exactly, it went from 70 to 83%, i.e 13%, where it should be 24% as stated in this thread,
http://forum.xda-developers.com/showpost.php?p=33585646&postcount=31
Now I am really angry. I will try with another Note 2 USB cable first, if that fails, there is something wrong with the device, I guess?
Click to expand...
Click to collapse
I really don't think it's your device or your battery for that matter. I have a question as well (sorry to hijack...). When you were charging it for 30 mins, were you using it? Was the screen off or the phone totally turned off? I noticed one night that I had an email notification and the phone did not charge because the notification LED was on all night while I slept and it was plugged into my 1A Samsung charger from my original Note. I have yet to check if the charging disconnects itself if the LED comes on. I don't even know if the phone charges at all if the screen is on either. Can anyone confirm? I guess I'll try it out tonight! The battery last forever I got to admit, perhaps most of the time I'm slow charging it at 1A max with the original Note's charger? I guess it does the battery some good
Thanks a bunch!

No pal I am not using the device while charging (because I am testing and measuring the times, that's why I restrain myself from touching it), and it's on, not off.
Anyway, yesterday I went to a friend's home and found he has a Samsung ACE and has same USB port like Note's and I was carrying the charging adapter, so I took that Ace's cable and plugged in to my Note's adapter and let it charge for an hour, and I was amazed and happy to see that it increased 38% in 60 mins. Well this tells me that the USB cable of my Note 2 is gone to heaven.
And oh, if you charge and use the device at the same time it will charge pretty fast even then too. I can confirm this when I first got the device, always was using it and charging, and I was surprised to even then how fast it was charging.

I (and many other users) have similar problems with Galaxy S3. I've made an app that shows the actual charging current: http://forum.xda-developers.com/showthread.php?t=2076078
I'm not sure if it works on the Note 2, but it is worth a try.
Please check if your device is charging at the optimal charging current (I think it is 2000mA for the Note 2 charger, instead of 1000mA as pointed in the SGS3 thread).

Very slow charging...

Is anyone else experiencing this problem or is it just how long it takes to charge this tab?
Plugged into the charger for an hour with the tablet off and it's only charged 15%. So it's going to take 6 and a half hours to fully charge?
Also the battery seems to die pretty quickly from just normal Web browsing. From 40 to 15% in an hr.
Battery life / charging / Simpsons tapped out lags / lots of stuttering with TouchWiz...
I want to be happy with this tab but it hasn't been easy

My battery life improves after a few charging cycles. I found Samsung charger is slow but not too bad. Mine charges about 30% an hour with tablet powered on but not in use. It goes a lot faster when using Nook HD charger, though both have 2.0A output.

My Note 3 charges so much faster that it's not even funny. And considering it's 10000 mAh...

Yep charges super slow. No idea why. Also drains super fast surfing web. People talk about getting 8 hours on this. Im lucky to get 4 but then again i like brightness high.
Use a launcher to improve Touchwiz stutter (funny that some folks complain about this stutter thing - on 10.5 have never experienced it even without a launcher).

cyi1 said:
Is anyone else experiencing this problem or is it just how long it takes to charge this tab?
Plugged into the charger for an hour with the tablet off and it's only charged 15%. So it's going to take 6 and a half hours to fully charge?
Also the battery seems to die pretty quickly from just normal Web browsing. From 40 to 15% in an hr.
Battery life / charging / Simpsons tapped out lags / lots of stuttering with TouchWiz...
I want to be happy with this tab but it hasn't been easy
Click to expand...
Click to collapse
Try to power down for a few minutes and then see if there was a difference after you powered on.
You can also check the task manager to see what is running on your system.
Sent from my HTC6435LVW using Tapatalk

Peter234 said:
Try to power down for a few minutes and then see if there was a difference after you powered on.
You can also check the task manager to see what is running on your system.
Sent from my HTC6435LVW using Tapatalk
Click to expand...
Click to collapse
I always kill apps when I'm done with them. Guess I'll give rooting and removing all the Samsung apps a shot.

I got some decent battery life out of mine when I had it about 6-8 hours mixed use. Def noticed a big drop when surfing the web using white backgrounds. Charging also was painfully slow on mine I think around 3-4 hours from 0 to full charge for me when not in use.

It's been a staple of their latest tablets unfortunately. Just make sure you're using the stock cable/adapter as some of the aftermarkets don't have enough power. For example, I have a 10 foot cable but it only puts out one third the power then the included power cable using the same adapter.
Sent from my SM-T800 using Tapatalk

Try using Galaxy Charging Current lite it helped me. I was using a Anker intelligent charger and it took forever to charge it. App showed current at 350-450mA. Used Samsungs and it showed 1800mA.

I have to agree, just received the tablet today albeit stressed out to the max because the fedex guy marked it as delivered when it wasn't to squeeze out extra minutes for a break (seriously?!?) I thought it got ripped off! So, back to the battery, I turned on the tab, beautiful this thing is by the way...and was at 62% out of the box. I began charging it using the included power cable and adapter, and 3 hours later I realized just how long this was taking to charge. Granted I was using it practically the whole time, I am hoping a higher amp charger will fix this for me.

Yup it took me 5.5 hours to charge fully. I'd be lucky if i get 5 hours of usage before the juice runs out.

8.4 inch charges fines here. 2.5 hours max, powered on or off.
Sent from my SM-G900F using Tapatalk

Charge time isn’t particularly fast on any of the devices, but the 10.5-inch model in particular takes a while to make it to a full charge. The 10.5 will reach a 90% charge in just under 4 hours, but to make it to 97% takes another hour and the last 3% takes another 42 minutes on top of that. Usable charge time is competitive, but if you’re obsessive about always charging to 100% the 10.5-inch model does take a while to get there.​​
http://www.anandtech.com/show/8197/samsung-galaxy-tab-s-review-105-84inch/3

BarryH_GEG said:
Charge time isn’t particularly fast on any of the devices, but the 10.5-inch model in particular takes a while to make it to a full charge. The 10.5 will reach a 90% charge in just under 4 hours, but to make it to 97% takes another hour and the last 3% takes another 42 minutes on top of that. Usable charge time is competitive, but if you’re obsessive about always charging to 100% the 10.5-inch model does take a while to get there.​​
http://www.anandtech.com/show/8197/samsung-galaxy-tab-s-review-105-84inch/3
Click to expand...
Click to collapse
Mine seems to charge quicker than what is stated on that chart. Will have to time it from 0% next time.
Sent from my SM-G900F using Tapatalk

The charger that comes with the tab s is the same all new galaxy devices are shipping with. They do 5.3volts instead of just 5 volts. You will get a little quicker charge with the stock charger.

I get a legit 6-8 hours SOT mixed use
Sent from my SM-T800 using XDA Premium 4 mobile app

Slow charging NO charging
I hope this is okay to post here since it is a charging problem. I am on my third SM t-800. Mine stop charging all together! First one charged one time then stopped. Second on would not charge at all, It used up its factory 45% that it shipped with and nothing more. Third one was best by far and charged untill this moring and has stopped. Now, here are the details. I checked the cord by pluging into my note 3 on all of them. Infact my wifes Note 2. They charge fine. I don't have my ameter to check ampers but they clearly are delivering volts to the other devices. Now get this. I have a Bose external speaker that uses a mini usb. I plugged that one into the tablet and it is charging right now. Of note I had a concern that maybe some how the socket was bumped on the tab and somehow messed it up. But that is a long shot since the first two were used while only on a desk. So this third one has been supper "babied". I'm so frustrated right now.
BTW my first tab charged very slowly. 6-7 hours or so. Maybe more? I feel at this point the pins in the tab are not making contact. Any thoughts?
JL
---------- Post added at 02:10 PM ---------- Previous post was at 01:28 PM ----------
Just got of the horn w/ Samsung. Got issue taken care of. In short, the phone tech mentioned ampreage and I yanked the AC transformer off the wall and checked it. The factory transformer is 5.3v. 2.00ampers. In the dark last night i plugged into a "white" charger. An ipad charger I think, that is 5.2v. 2.4amp transformer. I switched the cord to the corect transformer and the tab is charging. Apparenty the chip in the tab was protecting the unit from over ampreage and it shut down charging. I know better than this and feel like a fool but thought I should let you all know what happened. This brings up a issue. Slow charging.... could the slowness be caused by a transformer with say 1.5 amps? Maybe the tab will let it charge but at a slow rate? Just a thought. Moral of the story for me? Plug in the tab in a lighted area, and into the correct charger.
Signed,
Embarrased

Charging is a little slow, but the battery is large, so i accept that, but when it's charged 100% it lasts for ages. Faster charging shortens the life of the battery anyway. I could easily get 7- 8 hours constant surfing out of this tab. I've been on it now for over 2hrs surfing and it's used 13% . I always use auto brightness.

I get 6-8 hrs of mixed use, YouTube, surfing the Web and some movies with a little gaming. It takes me around 4 hrs to fully charge. Battery life is average. I'm using a 10.5 LTE.
Sent from my SM-T805

ashyx said:
Faster charging shortens the life of the battery anyway.
Click to expand...
Click to collapse
Technically this is not true at all. It is heat that hurts batteries. You can charge as fast as you want as long as you keep it cold. That being said, Lithium Ion batteries will take a much faster charge rate and not cause heat. You could easily charge this battery in 2 hours, but the common chargers aren't that powerful.

[Q] LG G4 Charging Very Slowly

Hi, I just got an LG G4 yesterday. Charging using stock charger, or any other charger I had no problems with S3 before, is really slow. As in obviously slow. The unit is estimating 3-4 hours to charge 30%-40% of battery. Once it took around 20-30 minutes to just charge 5% of battery.
Using Ampere app it is showing on average just 270mah charge. Sometimes it registers 1660mah, then it drops down significantly and settles with 270mah.
Using the dual sim model if that's any help.
Is this a new battery thing? Should I insist to have the unit (or the battery) replaced? Is this a hardware or a software issue? Even if i insist to have this replaced I want to be able to explain that this is a factory defect.

Same problem here..
Really annoying.

gideon200 said:
Same problem here..
Really annoying.
Click to expand...
Click to collapse
Same here, I think it charges at full speed when the screen is off...
I got myself a QC2.0 charger and its doing exactly the same.
It does appear to charge faster with it while the screen is off but I'm wondering if there is an update to the device that needs to be done to fully support QC2.0

i've buy an Aukey Turbo Charger Adapter.
Then my G4 has fast charging more about 75%

I've seen the same thing happen on mine. Highest current I've seen was 1650 mah. And that's with the screen off. Leaving the screen on it reduces to 270 mah
Sent from my SHIELD Tablet using XDA Free mobile app

I had the same problem but it stopped after about week. Now it charges quite quickly and that's not with the fastcharge that isn't too impressive.

Same issue. Charging went from 2% to 46% in about 3.5 hours and it says it's still another 4 hours before it completes charging. Totally annoying.

i using the Aukey Turbo Charger and get around 1%-1.5% every min i have done 30%-70% in like 40min

I have a HTC quick charger that I used with my M8. It works well with the G4. With the screen off I have had nearly 2 A charging. It is much less when the screen is on.

Just got my G4 and it's doing the same thing.
Sent from my Nexus 6 using XDA Free mobile app

Bogega said:
Same issue. Charging went from 2% to 46% in about 3.5 hours and it says it's still another 4 hours before it completes charging. Totally annoying.
Click to expand...
Click to collapse
are you using the screen while its charging tho? how many times have you charged it already since you got it?

Phurkus said:
are you using the screen while its charging tho? how many times have you charged it already since you got it?
Click to expand...
Click to collapse
my post was made during 2nd ever charging. i did turn on screen occasionally, but not like it was on all the time.
last night charge was shorter - around 5.5 hours.

This is really annoying trying to stream music and navigation sometimes losses a charge. With nexus 5 I usually gained 30 plus percent on my way to work on 40 ish minutes with car charger.

It "might" be a software limitation, to avoid pushing the battery too hard in its early cycles. Same as a brand new car, they usually tell you not to drive too fast for the motor to actually run with optimal parameters.
[2cents]

I am also experiencing the same. I am getting 640mA. It is really frustrating. Yesterday I connected the phone with the provided cable with G4 with my laptop. And i was using the phone, not heavy using. And actually the battery was draining, rather than charging. I got so frustrated. I found the phone actually charges better while staying idle & screen off, but not very promising.

Yep, add me to that list too. T-Mobile G4 with screen off and no use because I'm driving almost all day just to see a 5-10% more charge after driving almost 2 hours. The original charger behaves the same way too. The only fix I've found is to turn the phone off and charge it. It charges really fast that way only.
Sent from my LG-H811 using Tapatalk

Charged mine from 2 to 100% in under 2 hours with my note 4 charger

@fatboypup does this also work with screen on? Imagine using gmaps in the car, screen and gps active - it would be a pity if the g4 lost power in such a situation when on the car charger

pen² said:
@fatboypup does this also work with screen on? Imagine using gmaps in the car, screen and gps active - it would be a pity if the g4 lost power in such a situation when on the car charger
Click to expand...
Click to collapse
As I noted above it is an issue with cars too. I'm lucky to gain 5 to 10 percent with navigation and streaming music in 45 mins. The same situation with nexus was over 30%.

Does this behavior stay or is it only for the first charges? Is there anyone who has no slow charging with screen on? Is the g4 gaining at least some percent when navigating with gmaps?

Charging speed

To power up, you consume Red Bull. But your phone just needs its adaptive fast charger. Rate this thread to express how quickly the Samsung Galaxy S11 can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!

Very bad. Hard to come through the day.

It is extremely fast , almost I can't believe is like in 30 minutos it has like 70% do you know how amazing is that? I came from the Galaxy s10 and to get 70% it takes like an hour , and event with that amount of time I'd used to think that it was really fast , but now I know what is fast.

I'm having a weird behavior from charging. ( S20 exynos)
When charging, from 50% lets say, it shows 46 min to full (with the provided 25w charger ) , but when it gets around 97% it's shows 14min to full , after 1 minute goes to 98% , after 40 sec. goes to 99% , 10 sec. later Shows full battery, i leave there for 10 more minutes. I take it off the charger, couple minutes already drop to 98% or 97% , after that, it discharges at a more normal rate. If i plug in at 97 or 98% less than a minute it reaches full. Anyone else?

Galinha1 said:
I'm having a weird behavior from charging. ( S20 exynos)
When charging, from 50% lets say, it shows 46 min to full (with the provided 25w charger ) , but when it gets around 97% it's shows 14min to full , after 1 minute goes to 98% , after 40 sec. goes to 99% , 10 sec. later Shows full battery, i leave there for 10 more minutes. I take it off the charger, couple minutes already drop to 98% or 97% , after that, it discharges at a more normal rate. If i plug in at 97 or 98% less than a minute it reaches full. Anyone else?
Click to expand...
Click to collapse
Bad calibration maybe, did you try discharging to like 5% turn the phone off and charge it back to 100%

jojos38 said:
Bad calibration maybe, did you try discharging to like 5% turn the phone off and charge it back to 100%
Click to expand...
Click to collapse
Not to 5% , i saw a sugestion to go all the way. So o let my phone to empty ultil it turn off , and charge it 100% when it off , them turn it on. Didi 2 times, still the same.

Galinha1 said:
Not to 5% , i saw a sugestion to go all the way. So o let my phone to empty ultil it turn off , and charge it 100% when it off , them turn it on. Didi 2 times, still the same.
Click to expand...
Click to collapse
Weird, I have no idea then, I know there is a calibration thing in Samsung phone butii I believe it's not recommended to touch it I'm not sure, maybe you should return it back

25W is very nice compared to my S9's 15W, but it could have been more. S20 Ultra has 45W, so the S20+ could have had at least 35W and the S20 25W.

S20 ultra have also 25w charger in box. I bought separately 45w charger but charging time is 9 minute's quicker with 45w. From 0 to 100%

I haven't done extended testing since I started reading about this.
I let my phone drop down to 2-3%, I plugged it in using the 25w provided charger with the super-fast charging option on.
It gave me 1h and 8 minutes to full charge. Right now, I am at 38% and it says 48m.
I think though charging speed has decreased.
Might be the latest update?
As far as battery life goes, I was on my phone from 10 pm until 4 am and it went down around to 46-50%. (can't exactly recall since I was sleepy) Which is not bad.

XDA_RealLifeReview said:
To power up, you consume Red Bull. But your phone just needs its adaptive fast charger. Rate this thread to express how quickly the Samsung Galaxy S11 can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!
Click to expand...
Click to collapse
I have found to get these amazing charge time you must use the Samsung charging cord and ac charger. I had the use my old LG charging cord in car and places were USB charging is available. Samsung cords are type C to type C. Not typical. Now I have to buy new car charger and a longer Samsung cord for at home.
Sent from my SM-G981U using Tapatalk

RandomJazz said:
I haven't done extended testing since I started reading about this.
I let my phone drop down to 2-3%, I plugged it in using the 25w provided charger with the super-fast charging option on.
It gave me 1h and 8 minutes to full charge. Right now, I am at 38% and it says 48m.
I think though charging speed has decreased.
Might be the latest update?
As far as battery life goes, I was on my phone from 10 pm until 4 am and it went down around to 46-50%. (can't exactly recall since I was sleepy) Which is not bad.
Click to expand...
Click to collapse
I feel the same, it takes 1 hours 20 minutes now to charge fully , but I haven't received any update
first 2 days it charged in under 1 hour 5 minutes.

applicationz said:
I feel the same, it takes 1 hours 20 minutes now to charge fully , but I haven't received any update
first 2 days it charged in under 1 hour 5 minutes.
Click to expand...
Click to collapse
I really like this phone, finally made the switch after 10+ years in iOS, but all these reports regarding bugs etc made me OCD about it that I notice even the smallest things.

applicationz said:
I feel the same, it takes 1 hours 20 minutes now to charge fully , but I haven't received any update
first 2 days it charged in under 1 hour 5 minutes.
Click to expand...
Click to collapse
I believe people with AT&T only receive this update because I mysteriously have a new apk, AT&T Cloud?
Sent from my SM-G981U using Tapatalk

Samsung has done an outstanding work with the 25w charging, it is very fast and does not heat the Phone. Comparing with a 10w wireless charger it is half the speed and heats the phone a lot more (I know that we have the conversion factor for the wireless).
Screens below: [Date] [Time] [mA] [Battery Percentage] [Voltage] [Temperature]
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Charging speed of the S20+ under varying conditions
I'd like to share an interesting observation with respect to charging phones in hot weather conditions.
There was a recent update that screwed up with the charging speed of the S20 Ultra. A good friend asked me to check if I'm facing and issues with my S20+ because both phones run the Exynos SoC.
It was around 12.30 pm yesterday and I completely drained my phone to 0% and switched off. My room's ambient temperature was quite high (Say around 34-35*C) because it directly faces the sun. The phone was running hot from the time the charging started and the charging speed actually reduced.
For example, Earlier it used to take 30 mins to reach 55%, but this time, it could only reach 50%. And a full charge took 77 minutes instead of the usual 71 minutes.
I blamed Samsung instinctively but knew that it couldn't be the case for some reason because the difference was actually negligible. Immediately, I googled whether warm temperatures can cause a reduction in charging speed and I wasn't disappointed; from throttling your phone, battery drain, and increase in charging time, warm temperatures does it all.
So today, I decided to test it once again in a fairly cool environment. I switched on the room air conditioner and set the temperature to 24*C.
Here are my readings,
10 mins - 22%
20 mins - 41%
30 mins - 56%
40 mins - 72%
50 mins - 86%
60 mins - 92%
70 mins - 100%
This was my original charging speed (cross-checked with youtube videos also).
Unfortunately didn't make note of the readings when it was hot except for 30 mins (50%) and the full charge was 77 minutes instead of 71 minutes.
Also, the phone did not heat while super-fast charging, so the lower temperature did help in controlling the temperature of the phone.
Test conditions :
1. Using Samsung's original 25w charger
2. Phone switched off
3. Battery speed charging test from (0-100%)
4. I did not use any phone case. The phone was in its birthday suit.
So here's what I learned,
1. During Summer, see if you can remove your phone's case; during charging and also while using it. It can help with faster heat dissipation thereby improving battery life.
2. While charging your phone, make sure you keep it on a hard surface and not on your blankets, bed, or pillows (all these can trap heat and make your phone hot).
3. I've also come to understand all our phones or at least the flagships are designed to run efficiently at cooler environments. (You get the idea, right? CEOs, VPs who are inside an air-conditioned cabin all day long. Okay, okay, even employees who work at the lower level or even BPO employees, technically they also stay inside AC cabins or rooms all day long). I remember reading about this when the Samsung S4 was launched in 2013) when there were too many complaints about the phone overheating.
4. End of the day, just try not to keep your phone in a warm environment. As much as possible, charge it and use it where it's relatively cooler.
P.S. I know the above scenario is a very idealistic setting, but yeah, just try!