Database Users

Why does this phone take so long to charge?

I have had it plugged into the mains, running tunein radio through wifi and its gone from 85% to 86% in one hour.
If I charge from 10% with phone off it takes about 4 hours to fully charge
If I charge from 10% with my phone on running stuff, it actually never gets to fully charges by the time I finish work...at 6pm
Sorry to keep comparing to the dreaded FruitPhone, but that would charge whilst running wifi and tunein from 10% to 100% in about 2 hours.
I am beginning to think my SGS2 is faulty

i am fiding it takes about 3 hours to charge from empty . It does take a long time indeed but i guess it is what we have to do for a 1650mah battery

3 hours from empty with stock charger .
jje

it might well be a 1650 battery, but it starts to get unusable when it takes all day to charge then a few hours to loose it all.
This phone is the greatest but the battery life just completely destroys it, I am beginning to think I made the wrong choice

JJEgan said:
3 hours from empty with stock charger .
jje
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Is that while using it?

you are not supposed to use the phone when its charging its really bad for the battery it gets very warm during charging as it is...

virussnake said:
you are not supposed to use the phone when its charging its really bad for the battery it gets very warm during charging as it is...
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Aye... if I don't the bloomin thing would be dead by lunchtime, and I listen to music.
So I basically have to turn it off not use it so I can charge it, how crap is that, owned my iphone a year never had any problems with battery and I always used and charged in its dock.

The desire had slow charging too but snq- fixed this in his kernels maybe we can port his fix to our kernels
btw it's true li-ion batteries degrade quicky when the heat up (or completely charge or discharge)

From 30% it took me one hour and a half to fully charge..
I recommend to download battery mix as it takes very good statistic on the battery life and one can tell exactly how long it takes to charge and discharge
Sent from my GT-I9100 using XDA App

just for the record all Lion batteries in phones never fully discharge or recharge, as there balanced by a balancing chip.
when you get to the likes of 0% you actually have 20% charge, thats why you can power on the phone but it will immediately switch off again. like wise, charging you never reach 100%, it's more like 89%, again because of how Lion works.
if you fully discharged and fully recharged, well put it simply you'd have a lot of exploding phones, fire and chemical burns...

Interesting!
My phone charges in about 2,5 - 3 hours, so should be normal...
But charging with the usb cable connected to the pc it takes much longer.
Any of you experience the same thing?
greets!

THUDUK said:
I have had it plugged into the mains, running tunein radio through wifi and its gone from 85% to 86% in one hour.
If I charge from 10% with phone off it takes about 4 hours to fully charge
If I charge from 10% with my phone on running stuff, it actually never gets to fully charges by the time I finish work...at 6pm
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Click to collapse
Because:
a) That´s how Li-Ion-batteries are charged. To fully charge a Li-Ion-battery you need 3-4h.
b) The power-supply is pretty weak. It is just enough to charge the phone at decent speed, but it is not enough to charge it and intensely use it the same time. In this case much of the power is used by the phone and there is not enough left to do a proper charging. I use a 1,2A power-supply from my old Nokia, and while it won´t speed up charging itself, at least it slows down less when I´m using the phone while charging.
Sorry to keep comparing to the dreaded FruitPhone, but that would charge whilst running wifi and tunein from 10% to 100% in about 2 hours.
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This is not possible. The mighty fruity-phone may tell you it is 100% charged, but certainly it isn´t
You can charge a Li-Ion-battery very fast from 0 to 70-85% you could reach this in 1h. But you have to charge the remaining 15-30% very slowly, otherwise the voltage would raise too much and destroy your battery.
The so called saturation-stage (the charging-stage until 100%) takes longer the faster you charged at the beginning. If you really charged until the saturation-stage in 1h, the saturation-stage will take 2-3h.
If you charge slower, so you reach saturation-stage after 2h, the saturation-stage will only take 1-2h anymore.
In the end it will always take 3-4h to fully charge a Li-Ion-cell, regardless how strong your power-supply is.
Another few notes:
Charging will get slower the fuller the battery already is.
Using the phone with low battery-percentage will lengthen the charging-time quite a bit, a stronger power-supply could help.
Getting the last 20% in a Li-Ion-cell will always be very slow, usage of the phone won´t influence this a lot, and a stronger power-supply can´t help.
It doesn´t matter much, how much charge is left in the battery, to fully charge it it will always take long, as you spend most of the time in the saturation-stage (the higher the left percentage is, the more time you spent in saturation-stage)
I am beginning to think my SGS2 is faulty
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It is not faulty, it is designed this way.

It took 3 hours 10 minutes to fully charge my dog and bone yesterday whilst off

Thanks for the explanation!

jonny68 said:
It took 3 hours 10 minutes to fully charge my dog and bone yesterday whilst off
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Your having a bubble bath ain't you mate
Your battery sounds faulty to me, taking over 4 hours and only charging 1 percent in an hour. Try the battery calibration app in the market, if it doesn't improve get it swapped mate
[email protected]
Sent from my Samsung Galactic Crusader S II

The wifi is the killer, try turning it off when charging your phone..
Sent from my GT-I9100 using XDA App

it takes so long to charge because samsung capped the charge current at 650 mA in the battery driver. but other phones like HTC allow charging at the full 1 amp. so that's why its a slow charge, and why its possible to drain the battery even while plugged in to the charger.

Now who wants to ask kernel developers to increase that to .850 or 1 amp and use that lol.
I believe lack of heatsink due to design is the culprit behind decision to cap it at .650.
Sent from my GT-I9100

3 hrs to fully charge, and as i use tunein radio a lot i can tell you on my device with the screen off, wifi on with tunein running, it still seems to take no more than 3 hours maybe 15 mins more at most

I am probably going to order a cheap eBay Li-Ion battery that's 1800mAH and likely has a charge cap closer to 1000mAH. I will know in a week when I finally get my phone and report back if that battery helps. I expect it to heat up while charging and am going to use an external charger.
Two replacement batteries and an external charger go for about $12 USD on eBay btw.

Phone charge discussion

Hi, I have searched and read the related threads in the forum about SGS2 charging issue. It is true that the phone charges really slowly compared to other phones. I just tried playing a game and charging at the same time and the result is the phone was barely charging, which I think is a ridiculous. It means the power consumption when playing a game is almost equal to power being charged.
How about everyone else's charging time? I read before it seems Samsung capped the charging rate at 700mA. Not sure if it's true.

hbkmog said:
Hi, I have searched and read the related threads in the forum about SGS2 charging issue. It is true that the phone charges really slowly compared to other phones. I just tried playing a game and charging at the same time and the result is the phone was barely charging, which I think is a ridiculous. It means the power consumption when playing a game is almost equal to power being charged.
Click to expand...
Click to collapse
Being a high powered phone, it consumes a lot of battery power when being used and very little when in standby. So if you want to charge it at full rate, don't use the phone at the same time.
hbkmog said:
How about everyone else's charging time? I read before it seems Samsung capped the charging rate at 700mA. Not sure if it's true.
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Click to collapse
Without using the phone, my average charging time has been 3 hours and 43 minutes to get from totally flat 0% to 100%. Normal daily charge from about 20% to 100% takes 3 hours.
The charging rate is capped so that the battery and phone does not over heat during charging. An overheating battery will expand and possibly explode, thus potentially causing phone damage and user injury. That is why the charging rate is limited.

Same as posted before zero to full about 3 hours .
jje

Same here...more than 3 hours for 0-100%...even this reduced charging heats up the phone..

KE series of firmware charged really slowly, but it was fixed after KE7 I think. With the latest KG3, charging from 0 to 100 is done in 2.5 hours with wall charger.
Also don't forget that this phone has a 1650 mah battery. Don't expect it to fill it up at the same time as a 1300 mah one found in most other phones.

i usually charge at 20%. i also get about 3 hours to full charge

I still think someone should increase the charge current and see how it fares. It's all about tweaking and testing.

Charge the phone turned off, that's the fastest way to charge it.

Well personally I think it's kind of counter productive if the phone can't charge properly when you use it at the same time.

RogerPodacter said:
I still think someone should increase the charge current and see how it fares. It's all about tweaking and testing.
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Click to collapse
So why don't you do it yourself and tell us how it goes?

Bump
Would be nice to see in Cog or Vill

So how much truth is in statement that you can't use navigation, listen to MP3s and charge via car charger because your phone will be discharging anyway?

How well does adaptive fast charging for you?

Any one actually time how fast their note 4 charges for them? Mine didnt seem to charge any faster than my GS4 the last few days so I finally set a timer, and it charged 50% in just over an hour and a half. Way off what samsung claimed, considering this was supposed to take only 30 minutes...and yes I have fast charging enabled and am using the fast charging adapter.

In 20 minutes charged about 33%. I am happy, cause fast charging working very well. From 25% to 95 % in 60 minutes.
Wysłane z mojego SM-N910F przy użyciu Tapatalka

I've done measurements this morning after getting my Note 4 last night.
I agree. I've found little difference between fast charging, and normal at the levels i was measuring.
Perhaps it works faster between 0 and 50%, which seems to be the stats Samsung always quoted. If there is any kind of intelligence circutry going on, it must be varying the amount of ampage being drawn from the charger.
I've found the amps drawn to be VERY low as compared with the S5. Obviously the voltage is the main thing changing with Samsung's "fast Charging" plug.
For example changing from 90% to 100% I found:
USB 2 lead supplied with phone + normal plug = 23mins 31 seconds
USB 2 lead supplied with phone + fast charging plug supplied by Samsung = 23 mins dead.
31 seconds difference is hardly stallar!
Yes you can say it depends on what apps were consuming resource in the background, but it was just standard apps synching etc.
Screen was off the entire time, and nothing processor intensive was actively running.
But I did notice something interesting:
If watts = amps x volts it might explain why the phone isn't charging that fast at the 90% level.
Note 4:
With anker 40w 5-port charge (capable of outpitting 2.4 amps per port, the typical draw was between 300 and 450 ma
With Samsung fast charger it was drawing between 250 and 350ma.
Obviously I'm not counting voltage, which will definitely play a part in the overall wattage. But there has to be some kind of intelligence here controlling it as it's not steady.
S5:
Anker 5-port: 1200ma steady
Fast charger (not compatable of course): 1200ma Steady
Which is also intereting seeing as the max output is 1800ma, so the phone still isnt drawing the max it could do.
Might try draining the Note 4 down even more, and seeing if it does up the draw when the battery is nearing empty

I was very impressed with the charging.
The ultimate test for me was when I was playing a fairly graphics hungry game whilst being connected to the fast charger. It continued to charge the phone up to 100% from 30% in around 40 minutes whilst playing.
I believe the best way to ensure the results are comparable is to make sure the phone is completely powered down and the battery has had a handful of recharge cycles first.
Anyhow, I am impressed with the charging and the battery consumption of my Note 4 to date
.

Impressive. Considering you were using a lot of screen and processing power. Sounds like a wait and see is in order, see how it pans out.
Battery life doesn't seem bad for what I have used, not but much better than I had on the S5. In time I expect things to improve though.

With me fast charging work very well
30 mins then 50% when playing some small game and surfing web
Sent from my SM-N910L using XDA Free mobile app

I went from 21% to 75% in about 40 minutes the other day (was monitoring), but my device was on and I had used it a few times in between that time... fast charging is really meant to be used when your device is OFF - that's where you'll get the most benefit.

Mine works fine. Remember it works while screen is off or phone powered down. Also from 0-50 only. Beyond that and it will use 5v to charge instead of the 9v. That's why Fast Charging will only work with the charger it came with.

breacherman said:
Any one actually time how fast their note 4 charges for them? Mine didnt seem to charge any faster than my GS4 the last few days so I finally set a timer, and it charged 50% in just over an hour and a half. Way off what samsung claimed, considering this was supposed to take only 30 minutes...and yes I have fast charging enabled and am using the fast charging adapter.
Click to expand...
Click to collapse
Are you still having the same issue?
Im charging my phone for the first time and i dont find the fast charging works well with me. Its been an hour already and my battery is still at 30%. I also turn off my phone to make sure i get the 30mins 50% but no luck. Should fast charging kicks in after several recharge cycle?

Remember, it's called adaptive fast charging so it's charging rate varies depending on variables such as temperature, etc.
I went from 20% to 96% in about 60-90 minutes today. Not too bad.
I don't plan on using fast charging much to test, but it's my first few days with the phone and I've been stress testing it to see how battery life is.

90mins for me from 1% to 100%.

no problem at all. been charging from 0 to 100% at exactly 60mins

Impressed with mine used to have a spare battery but not anymore as the beast can really fast.

Must use included charger and CABLE
I found that for fast charging to work you must use the cable and charger that shipped with the Note 4.

hey and im sorry to dig this thread out again, but wondering if another tried fast charging with third party battery, I bought a ravpower note 4 battery off amazon and charged it with my note 4 adapter and I went from 10% to 50% in about 50 minutes, im sure its not fast enough.

note 4 adaptive fast charging
The phone has a chip and the charger has a chip it is this that allows the phone to charge at 9v only between 0 to 50. It's easy for people to be unimpressed because Samsung typically charge quickly. I tried a LG g3 for a few days and it charged ridiculously slow compared to a Samsung if it is taking an hr and a half to charge your phone halfway I would consider using your warranty for a new device or battery

ita7ia said:
The phone has a chip and the charger has a chip it is this that allows the phone to charge at 9v only between 0 to 50. It's easy for people to be unimpressed because Samsung typically charge quickly. I tried a LG g3 for a few days and it charged ridiculously slow compared to a Samsung if it is taking an hr and a half to charge your phone halfway I would consider using your warranty for a new device or battery
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Click to collapse
is this correct?
It will only do fast charging below 50%?
What if it starts at 45% - will it stop when it gets to 50%?

I'm finding that Adaptive Fast Charging (AFC) only works (phone reads "fast charging") when the charge cycle is started while the phone's battery is almost dead. Now, "almost dead" means different things to different people, but my GS6 won't use AFC unless it's really low - I know it won't kick on/in circa 35%, but I don't know the precise level.
Here's some an interesting comment made on the awesome article at the link below:
"You should note though, that CABLES DO MATTER. Every el-cheapo ebay cable isn't supported for quick charging. They usually allow about 700mA to pass through. You need high quality cables that probably came with your smartphone in order for quick charging to work. I have done several tests with my Note 4 with several cables and an adapter that meters the output Amperage."
http://www.androidpolice.com/2015/0...-need-to-know-about-charging-your-smartphone/

Works great for me take about an hour and 40 mins from 4-fully charged.

I lost my charger so i cant help here
Been looking all over eBay & Amazon, but nothing...*sigh*

[Solution] not turning on and randomly shuting down long periods problem

SOLUTION NOT TURNING ON AND RANDOMLY SHUTING DOWN LONG PERIODS PROBLEM
I have found the solution to the problem alot of person are having
Problem : Phone randomly shutting Down and not turning on for a long while .
cause of problem : its either software or hardware but the phone is unable to hard reset when this problem occurs. and the battery is irremovable.
Hence have to wait til the battery to dead and charge it again otherwise the phone will overheat when trying to charge it .
solution is to drain the battery .
and the Quickest way to do so is to put in the fridge (not Freezer ) Warning !!! not the freezer for a duration to 10 mins to 15 mins depending on the battery level . what this does is to slow down the chemical reaction in the battery meaning draining the battery .
after that U will charge the phone 15 mins before turning it on .
NOW !!!
This is the important part
YOU need to remove or disable any app / feature u believe is causing the issue
A few are the Power saving is on
Accessibility are enable
and others
Please disable them
and update to the latest firmware if u are on stock
if u are rooted dont update with OTA
:fingers-crossed::fingers-crossed:
Let me know if this help and hit thanks button :good::good::good:

robbyfrass said:
and the Quickest way to do so is to put in the fridge (not Freezer ) Warning !!! not the freezer for a duration to 10 mins to 15 mins depending on the battery level . what this does is to slow down the chemical reaction in the battery meaning draining the battery .
Click to expand...
Click to collapse
Hopefully this works for people, but your explanation as to why putting it in the fridge works is faulty. Popular thought is that batteries are usually put in the fridge to slow down the discharge.
http://www.greenbatteries.com/battery-myths-vs-battery-facts-1/
Alkaline batteries stored at "room temperature" self discharge at a rate of less than two percent per year. So normally refrigerating or freezing them will only help maintain their charge by a tiny amount. Hardly worth the effort of chilling them. However, if alkaline batteries are stored at higher temperatures they will start to lose capacity much quicker. At 85 degrees F they only lose about 5% per year, but at 100 degrees they lose 25% per year. So if you live in a very hot climate or are storing your batteries in a very hot location, it may be worthwhile for you to store your alkaline batteries in a refrigerator instead.
NiMH and NiCd batteries self discharge at a MUCH faster rate than alkaline batteries. In fact, at "room temperature" (about 70 degrees F) NiMH and NiCD batteries will self discharge a few percent PER DAY. Storing them at lower temperatures will slow their self discharge rate dramatically. NiMH batteries stored at freezing will retain over 90% of their charge for full month. So it might make sense to store them in a freezer. If you do, it's best to bring them back to room temperature before using them. Even if you don't freeze your NiMH batteries after charging them, you should store them in a cool place to minimize their self discharge.
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Click to collapse

BATTERY LIFE: 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 Note5 can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!

Phone isint charging past 1000 mA on stock cable. However using one from PS4 is giving full 1800-2000 mA! Did I get a faulty cable by any chance ? N920C

This is the fastest charging phone ever! During the days where I use the phone heavily, it will drop to about 15-20% around 4 PM, my day starts at 5 AM. That's when I unplug my phone also. So great battery life for me. It will charge from 10% to 100% in about 1 hr or just slightly more. Can't complain about it, it a great feature.

lol just plug my phone in, went to starbucks come back at 80% from 39% in around 30-40 min

I got the phone down to 1% and it took 1 hour 36 mins to charge to 100%
Sent from my SM-N920I using Tapatalk

Driving me crazy
i have to try at least 5-7 times to get it into fast charging mod
otherwise it will keep charge normaly

Mohammed-noor said:
i have to try at least 5-7 times to get it into fast charging mod
otherwise it will keep charge normaly
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Click to collapse
Just switch the cable, had that problem.
The cable that i got with the phone is garbage, any other one will do the trick.

Charges as fast or faster than my S6 did, which is awesome since the battery is bigger. IF I use it heavily throughout the day and get it below 50% I'll throw it on the fast charger (wired) while doing dishes or something and I get almost 2%/min. 10 minutes will get me almost 20% more battery and I'm golden for the rest of the day with heavy use (CoC attacks all night lol)

vakenT said:
Just switch the cable, had that problem.
The cable that i got with the phone is garbage, any other one will do the trick.
Click to expand...
Click to collapse
same thing,thanks any way

1h 10min or 1h 20mins fully charged everytime.

Wireless Fast Charger
Got 2 wireless chargers. 1 from Costco when i got the note 5 and the other when i activated samsung pay. Sold them both for 20 each and bought the fast charger. Less sensitive when looking for that "sweet spot" and seems to charge just as fast as factory cable. About an hour and twenty minutes to charge fully. Battery lasts pretty good on stock even before using package disabler pro.

A little over an hour here for me for a full charge.

charging speed is very fast. from 20% in just few minutes charged goes up to 50%. from drained battery to full charge takes about 1 hour and 20 mins. looking for suggestions for good power bank with wireless charging capability for this phone.

awesome speed

Deep sleep issue

1 hour 13 min

jhylez said:
charging speed is very fast. from 20% in just few minutes charged goes up to 50%. from drained battery to full charge takes about 1 hour and 20 mins. looking for suggestions for good power bank with wireless charging capability for this phone.
Click to expand...
Click to collapse
The Pleson wireless fast charge that I bought on Amazon for 18 dollars charges my phone in a little less than 75 minutes from 5% to 100%.. The phone does get a little hot though.

You guys talk about charging time while Fast Charge features enabled.
How about normal charge ?
I was disabled fast charge feature and tried to plug my phone to my charge. It took me more than 4 hours to fully charged from 15% of battery.

why waste time with regular charging when it takes 1hr 11 min to 100% from 15%....charging with phone off.
if you charge while on the phone is on & continually updating social media, email, stocks/bonds/financial, it'll take a long time, if you ever see 100%.

I don't fully deplete my battery anymore, since it's not replaceable. When I had the note 3 with another spare battery and usb 3.0 wire charger I got it down it like 10% than charge. Life is a little different on the note 5. I have to charge my phone while at work, at least once a day sometimes 2 times if I'm heavily using my phone. Just the combination of bad 3g service here at work and Really good 4G LTE service, in certain areas, brings my battery performance down. But no problem, I have fast wired charger, from 20% to 100% in about 1 hour and 10 mins while the phone is on and even faster with the phone off. At home, I have fast wireless charger which I use, right before I sleep when I don't need a fast charge. A little slower than the fast wired charger, but 20% to 100% in 1 hour and 30 mins. I also have a non fast wireless charger but it's sort of useless. It only works will with my brother's s6 and now his s7.