Slowing charging - Samsung Galaxy S9 Questions & Answers

I have tried 2 chargers (provided by Samsung) for my S9 Plus and Im still not getting a fast charge. It take around 3-4 hours to charge my phone and that usually when I am starting out around 20%. I'm wondering if I have a bad phone. I cant imagine 2 chargers being bad. I dont have a ton of apps (4 apps) on my phone to slow things down. Has anyone else had this issue?

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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
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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
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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
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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.
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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.

Fast charging fills the battery with fluff!

I have been doing some experiments with fast charger from Google and a regular 5W charger. My observation is that whenever I use the slow charging, my phone lasts about 7-8 hours of SOT. Whenever I use fast charger, I get around 5-6 hours SOT. This is with exact same set of apps and same kind of daily usage. I have done this experiment over 3 month period and the behaviour is super-consistent.
I did several combinations like did 2 contiguous slow charging sessions, 2 contiguous fast charging ones to make sure that it wasn't just residual of some sort from previous run and stats somehow always giving advantage to slow charging.
I have a theory to explain this experimental data. I think fast charging is inefficient in storing the same amount of actual energy in battery cells as would have happened if you charged slow because of the extra heat it generates. And numbers are just shown by software based on what software thinks it transferred. Its all just software: a component in the phone's firmware and a component in battery's firmware agreeing on amount of energy transferred.
Has there been any scientific study done in this regard to see if same 2 batteries are charged differently to the same %age, how differently or similarly do they discharge?
devsk said:
I have been doing some experiments with fast charger from Google and a regular 5W charger. My observation is that whenever I use the slow charging, my phone lasts about 7-8 hours of SOT. Whenever I use fast charger, I get around 5-6 hours SOT. This is with exact same set of apps and same kind of daily usage. I have done this experiment over 3 month period and the behaviour is super-consistent.
I did several combinations like did 2 contiguous slow charging sessions, 2 contiguous fast charging ones to make sure that it wasn't just residual of some sort from previous run and stats somehow always giving advantage to slow charging.
I have a theory to explain this experimental data. I think fast charging is inefficient in storing the same amount of actual energy in battery cells as would have happened if you charged slow because of the extra heat it generates. And numbers are just shown by software based on what software thinks it transferred. Its all just software: a component in the phone's firmware and a component in battery's firmware agreeing on amount of energy transferred.
Has there been any scientific study done in this regard to see if same 2 batteries are charged differently to the same %age, how differently or similarly do they discharge?
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Your spot on dude, fast charging is a battery killer, although, the 18 watt charger is borderline, i think google did a good job there, dont ever use the 30watt charger on any phone or tablet no matter what its says or comes with, after a year of 30 watt charging everyday the battery will be screwed big time, now this is where the manufacturers get you, you cant change the battery so you have to opt in for a new device. There thinking is, you always have a new phone at start of a new contract so balls to the battery, give super turbo charging as a ground breaking new way of charging quicker, customers wont know whats happening.

Battery replacement: slow charging?

Here we goes guys,
I finally received all parts to refresh my Panda Pixel 2XL.
New screen (Ixifit)
New USB-C port (Ixifit)
New battery
New display adhesive
Because I'm on reddit, I shared my experience and a nice guys tell me this:
'You will have charging problems after you replace the battery. I've done a few, all "original batteries", two of the phones charging times went from two hours to 8-9 hours to fully charge.'
"Maybe you have gotten a different battery. But I tried two different batteries in one phone and another battery in a second phone. Both phones, even after cycling the batteries, took 8-9 hours to charge from 20-30% to full. Using the original charger. I tried new cables and charging pucks. Resetting the phone etc. Even putting the old battery back in, still had the same 8-9 hour charging time. There must be something in the firmware that doesn't like loosing power(when the battery is disconnected). I don't know. I have to warn customers now before I change them out. Hopefully you will have better results."
Is it possible that phone software doesn't support a true power cut off (or removed battery) and charge slowly the new battery?
What is your experience about this because now I'm scared.

Overheating while charging on Wireless charger

Hi, I have Samsung Galaxy S20+ G985F/DS (Exynos). Few weeks ago I get a new company car, which has wireless Smartlink+ for android auto and apple car play. I was used to use cable, but few days ago I decided to bought wireless charger (Baseus Cobble 15W) to my car. Since then I have problem with overheating my phone when I am using wireless android auto and wirelessly charging it. I am using Spotify and Waze together and at same time I am charging it with wireless charger, but after few minutes (usually 5-10 minutes) it disconnets with error that my phone is too hot and it will continue charging after it will be colder. When I try to take a phone its damn hot. Is this normal behaviour or my phone is broken?
Running the battery hot will cause premature aging fast; stop doing it.
Software may be using a lot of cpu cycles; wayward apk(s).
Correct this if so.
It's not a good idea to charge and use the phone.
Get a fast charger for the car; you get about 2% per minute with a 25 watt one in fast charging mode between 40-65%.
A 25% charge should last 2 hours.
Li's love frequent partial midrange charge cycles and will get hundreds to thousands more full charge cycles when used like this. Partial fast charging does no harm as long as you keep the temp in the 80-99F range.
Try to avoid charging when under 80F and especially if near or below freezing temperatures.
Been using my 10+ like that for over a year, the battery is in very good condition to spite near all day use.
blackhawk said:
Running the battery hot will cause premature aging fast; stop doing it.
Software may be using a lot of cpu cycles; wayward apk(s).
Correct this if so.
It's not a good idea to charge and use the phone.
Get a fast charger for the car; you get about 2% per minute with a 25 watt one in fast charging mode between 40-65%.
A 25% charge should last 2 hours.
Li's love frequent partial midrange charge cycles and will get hundreds to thousands more full charge cycles when used like this. Partial fast charging does no harm as long as you keep the temp in the 80-99F range.
Try to avoid charging when under 80F and especially if near or below freezing temperatures.
Been using my 10+ like that for over a year, the battery is in very good condition to spite near all day use.
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Click to collapse
Well thank you for your answer, but I don't understand you well. Your post is very confusing. But from what I understand, you simply tell me, that I must buy normal wire charger and I must stop using wireless charger because using it is not good? But that is not answer that i want. Because I don't want to plug cable to phone, because when I have wireless android auto in my car, its useless. For example my colleague have car with built in wireless charger. And from what you told me, he can't use this built in charger because its bad?
You have two issues.
App(s) that are using excessive battery.
Charging while using.
Both are best avoided and both drive up the temperature.
Of course you can do what you want but battery longevity may take a hit in doing so.
Karma Firewall is useful for finding unnecessary bandwidth hogs and some of the battery hogs. Start with that.
All wireless chargers make phone hot. Even if you use it at home and no aps are open.
olafsand said:
All wireless chargers make phone hot. Even if you use it at home and no aps are open.
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Click to collapse
Excellent point.
A damp rag can be used to reduce the temp.
Unless the charge port is broken wireless charging just doesn't seem like a good modility.
Even at high frequency and optimum primary/secondary winding gapping air core transformers are notoriously inefficient.
These batteries are power hungry critters...
Man, I know what you all are saying but imagine covering your phone with a damp rag when changing, imma die of laughter if I see that anywhere. I know it's gonna work but it's going to be funny af
Mine did the same thing, it was 5 days old when I saw it the first time. If you insist using your phone and charging it wirelessly disable the fast wireless charging option from the settings and you are going to be good to go, but don't expect the phone to charge that much, maybe 2% in 5min, something like that probably. It will not overheat, tested it myself. Be careful, if it continues to overheat even with fast wireless charging option disabled stop using the charger when using your phone. I have a suspicion I burned my coil like that, it only took 5 or so times where my phone said that it can't continue charging because too hot. I hope that wasn't the case.

Question Battery lifetime and charging speed

Hi there,
I'm looking for a new phone as my Huawei P30 Pro is getting old and out of updates.
The Pixel 6 pro is very interesting and the price for it is quite OK at the moment if you get it from ebay or something.
The only thing that drives me crazy about the phone is the lack of real fast charging. All of the others are charging with 40 or 65 or even 120 Watt at the moment.... and google has only 30 Watts for charging.
Is it really that slow in daily use?
I very often charge my phone which has 40 Watts of charging power for like 10 or 15minutes and that gets me quite good through a day or at least a working day (around 9-10 hours away from home with watching netflix or prime for about 1,5 hours while getting to work and home)) starting from 20 or 30% before charging.
What are your experiences regarding the charging and the battery lifetime??
Thanks for your answers!
I get charging times around one and a half hour to fully charge, basically from zero.
Full charge lasts me for seven hours of screen on time doing simple stuff - browsing, writing emails, reading news. Rarely watching videos and if so, than just for few minutes only.
Charging speed is obviously faster while you are low on battery and gets slower as the battery gets fully charged.
It's and okay phone and while charging could be faster and least it's sparing the battery. Photos and the phone itself is wonderful though.
Situation with bugs is also getting better, with bugs being non-existent for me. Tomorrow is time for a huge March feature drop with lots of additional fixes so check out this forum for more information about how that's going to go.
ericDraven77 said:
Hi there,
I'm looking for a new phone as my Huawei P30 Pro is getting old and out of updates.
The Pixel 6 pro is very interesting and the price for it is quite OK at the moment if you get it from ebay or something.
The only thing that drives me crazy about the phone is the lack of real fast charging. All of the others are charging with 40 or 65 or even 120 Watt at the moment.... and google has only 30 Watts for charging.
Is it really that slow in daily use?
I very often charge my phone which has 40 Watts of charging power for like 10 or 15minutes and that gets me quite good through a day or at least a working day (around 9-10 hours away from home with watching netflix or prime for about 1,5 hours while getting to work and home)) starting from 20 or 30% before charging.
What are your experiences regarding the charging and the battery lifetime??
Thanks for your answers!
Click to expand...
Click to collapse
I've not managed to flatten my Pixel 6 Pro in a day (6am to around 10pm) as of yet no matter how hard i hammer it.
I charge it overnight on a slower charger and with adaptive charging enabled.

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