s8 overnight+excessive charging - Samsung Galaxy S8 Questions and Answers

is it safe to leave the device on the wireless charger after 100% charge level? i have the same question for wired fast charging.

wired charging is no problem, since it stops to charge when it's full. even if it shows 100% it's not, because it loses a bit when it's fully charged for a while.
when i use wireless charging over night, my phone is warm or even hot every morning. batteries don't like heat, so i asume it will be damaged after some time.
Do you guys have the same experience with wireless charging? (I'm only using original samsung chargers with my exynos s8)

On my note5 (S8 arrives today). Over night wireless charging did not result in warm phone in morning. Could be because I purposely bought the slow or regular charge cheotech charger
Sent from my iPhone using Tapatalk

even i have the non-fast charge wireless charger.

I only charge my phone once a day which is when I go to bed, but I turned fast charging off since I don't need it to fast charge overnight. With the previous Samsung wireless charging pad, I'd wake up to a warm phone in the morning (I've just been having problems with the older versions in general). Finally bought the new convertible charger since it was on sale, and I no longer wake up to a warm phone.

I have a none fast charge pad and use it overnight. No warm phone in the morning and battery capacity isn't decreasing very much at all according the Accubattery.

Related

Charging Stops Overnight

Like a lot of people I charge my phone over night, but with the 6p I wake up in the morning (after a good 8hrs) and its sat on 96-98%. Even though it still says charging.
It's no big deal but when I unplug and plug back in it charges to 100% relatively quickly.
Anyone else see this? I'm using an older charger (from my nexus 4) so may try the proper one tonight.
Sent from my Nexus 6P using XDA Free mobile app
Isn't this normal behaviour? Most phones stop topping up the battery even when connected on the charger to avoid wearing off the battery.
I used to have my HTC m7 connected overnight to the charger and even though it showed 100℅ in the morning, as soon as I disconnected it from the main the indictor would drop rapidly to ~95℅ which indicated the above behaviour.
Sent from my Nexus 6P using Tapatalk
I've not seen it before. My galaxy s6 always came off charge at 100% as did my nexus4 and the 5x I owned briefly.
If this is normal and happens to other 6p owners I'm happy with that
Sent from my Nexus 6P using XDA Free mobile app
Mine is doing this as well. It seems to charge to 100%, stop charging, and not run off power at all. Since I use sleep tracking, in my case, I usually wake up to about a 90% charge. This is the first phone I have seen do this -- they usually charge to 100% and keep running off the charger. I haven't tried the stock 3A charger yet, as there really is no need for a quick charge overnight.
pahardie said:
I've not seen it before. My galaxy s6 always came off charge at 100% as did my nexus4 and the 5x I owned briefly.
If this is normal and happens to other 6p owners I'm happy with that
Sent from my Nexus 6P using XDA Free mobile app
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How in the world are you using an old charger on a Type-C Connection? (or are you using a converter?... if so, that may be the reason)
Just using a USB A to USB C cable into the power brick from my old phone.
Pretty straightforward really.
I'll try with the proper charger at some point. It's not a big deal.
Mine hasn't done that. Got it Thursday and it's had a full charge each morning. Using the supplied charger
normal behavior. it does that to protect the battery.
Every phone I've ever had charges to 100% and stays running off the charger to stay at 100%. Last night (my first night with the phone) I plugged it in with 31% and woke up with it at 81%. It clearly charged....and then stopped charging only to run off the battery while still plugged in. Not normal for any other device I've owned. I would prefer it to stay at 100% until I'm ready to unplug it. Maybe using the supplied charger will do this. I used a USB A to C cable plugged into USB wall port. I have replaced several outlets in my house to ones with built in 2.1A USB chargers.
318sugarhill said:
Every phone I've ever had charges to 100% and stays running off the charger to stay at 100%. Last night (my first night with the phone) I plugged it in with 31% and woke up with it at 81%. It clearly charged....and then stopped charging only to run off the battery while still plugged in. Not normal for any other device I've owned. I would prefer it to stay at 100% until I'm ready to unplug it. Maybe using the supplied charger will do this. I used a USB A to C cable plugged into USB wall port. I have replaced several outlets in my house to ones with built in 2.1A USB chargers.
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I'm not understanding why anyone would not use the supplied charger and cable.
bobby janow said:
I'm not understanding why anyone would not use the supplied charger and cable.
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Why should it matter? wattage is wattage. Does the phone charge differently with the stock charger? Do you always carry it in your back pocket? Do you ever use a car charger?
318sugarhill said:
Why should it matter? wattage is wattage. Does the phone charge differently with the stock charger? Do you always carry it in your back pocket? Do you ever use a car charger?
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Carry the phone in my back pocket? No, I don't but what does that have to do with the price of tea in China? I do not use a car charger either. As for wattage, I believe that the type C 3.1 chargers output at 100W and possibly 200W whereas the one you are using might deliver 18W. There might also be damage due to wiring with some of the 2.0 - 3.1 adapters but I'm still researching that.
So why wouldn't you use the type C charger? Besides, you can't plug it in backwards or upside down. And once you get a computer that supports type C the data transfer rates will be astonishing from what I've read.
bobby janow said:
Carry the phone in my back pocket? No, I don't but what does that have to do with the price of tea in China? I do not use a car charger either. As for wattage, I believe that the type C 3.1 chargers output at 100W and possibly 200W whereas the one you are using might deliver 18W. There might also be damage due to wiring with some of the 2.0 - 3.1 adapters but I'm still researching that.
So why wouldn't you use the type C charger? Besides, you can't plug it in backwards or upside down. And once you get a computer that supports type C the data transfer rates will be astonishing from what I've read.
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Do you carry STOCK charger in your back pocket.
Point is, sometimes I need to charge it at work, or elsewhere as I may use it heavily. That's why I would use another charger. Point is, why does it stop charging on the charger and not draw from the charger once it's full. Like I said, mine charged fully then stopped using the charger drawing from the battery. Kind of pointless if I leave it on the charger to be full when I leave in the morning if it's not going to be full.
I'm glad its not just me who finds this a bit odd.
I used the same charger with my nexus 5x, galaxy s6 and nexus 4 and always found the phone at 100% in the morning.
The 6p obviously works differently.
318sugarhill said:
Do you carry STOCK charger in your back pocket.
Point is, sometimes I need to charge it at work, or elsewhere as I may use it heavily. That's why I would use another charger. Point is, why does it stop charging on the charger and not draw from the charger once it's full. Like I said, mine charged fully then stopped using the charger drawing from the battery. Kind of pointless if I leave it on the charger to be full when I leave in the morning if it's not going to be full.
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I see what you mean. For a quick boost charge I can see you carrying a cord in your back pocket. I'm really trying to get a full 14-18 hours with this device no matter my usage. If I can't I really cannot justify this expense. I have 4 phones on my plan, a Samsung 5S, two iPhones 6s, and up until yesterday my N5. All other 3 got a full day plus even watching video and listening to music constantly. So no, I'm not carrying a charger, a cord or buying a car charger.
As for your problem of charging, have you tried the stock charger to see if you can get to 100%. I have already twice with no problem. Last night I wanted to unplug it once charged to see how much it drained overnight but I fell asleep at 93% and unplugged a few hours later. 6 hours off the charger it was still at 99% so I'm assuming it charged to 100 or close to it. Perhaps you can do a full charge overnight and then a spot charge during the day if you need. I'm thinking you might not.
I am also having this problem. I am using the included c to a cable to charge with. The phone stops charging around 95% and doesn't charge ever again until I unplug it and plug it back in.
These are the problems with this:
1. Cases where i do not have the included charger with me.
2. On long trips where my phone is plugged in all the time to prevent it from dying. (Streaming music, navigating, etc)
3. Sleep tracking
I'm using the Anker 5 port charging hub at 2A each port.
once your battery gets fully charged 100% - the charging stops to prevent your battery from overcharging. since your battery is not charging - your battery will drop down. once it gets down to 95% - charging resumes until it gets back to 100%.
in other words - that is normal.
Gekko2 said:
once your battery gets fully charged 100% - the charging stops to prevent your battery from overcharging. since your battery is not charging - your battery will drop down. once it gets down to 95% - charging resumes until it gets back to 100%.
in other words - that is normal.
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Every other phone I have ever had did not do this and instead trickle charged at 100% and ran everything off of the charging port, never had a phone that constantly drops to 95% then back to 100%, that would be a roller coaster during car trips. The problem I'm experiencing is not that situation either; the phone will stop charging and never get charged again, so it could drop to 80% while connected to the charger. It knows it's connected to a charger, but doesn't draw current from it. Doesn't show the charging icon or charging AC, but the lock screen shows the percentage of battery.
I do have possibly some positive observations however. Last night I decided to try it without my USB 3.0 extension cable, and only the measly 1 foot c to a cable Google provided. Without the extension cable my phone charged as it should, went to 100% and stayed there with the charging symbol still on the battery icon. Upon removal of the charger, the battery stats showed only 3 seconds of use, whereas before it would just show everything since last 100% (which was sometimes 50 hours even though i charge my phone every night). I'd have to keep observing this to see if it was indeed the extension cable.
That's interesting wrt the extension cable. I have a extension as well. Will get rid and see what happens. I keep meaning to try stock charger and stock cable but can't be bothered.
It's not normal behaviour or else it'd happen on other phones. I've had nexus 4 iPhone 4s htc one m8 Samsung galaxy s6 iPhone 5s and nexus 5x all using the same charger / extension all have charged to 100% and stayed there.. Except the 6p.
It's not a massive deal, typically it'll loose 1 or 2 percent over night once it's been to 100.
Just an update, it was the extension cable. Phone charges to 100 at stays there until unplugged as is expected behavior. Just don't use USB extension cables to charge devices

Q - Phone stays warm while on Qi wireless charger, long after 100%. Is this okay?

I've been leaving my phone on this wireless Qi charger overnight: http://www.amazon.com/Wireless-Charger-Yootech-Charging-Qi-Enabled/dp/B00NWMI07S
When I pick it up in the morning, the phone is still warm...Not hot, but warm. I guess I would expect current to shut off once the battery reaches 100%, and the phone to be cool.
If I plug it in overnight, the phone is cool in the morning like I'd expect.
Will leaving the phone on the Qi charger pad for long periods of team degrade battery life?
Not sure about the long term effects on the battery but mine is also warm after changing overnight on a TYLT VU wireless charger. It's a standard speed not fast.
I believe that if you leave it on the charger while you sleep, once it hits 100% it continues to trickle charge to keep the battery at 100%. Because there is no real way to transfer electricity without heat being released, that is why the phone continues to stay warm.
I have the same issue, but my Nexus 5 and S6E never had that issue.. Makes me wonder.
This is the correct answer. Once it hits 100% it will stop but will still "trickle" charge which keeps the battery at (or close to) 100%. Therefore the charger is still working and causing the phone to be hot. It is not an "issue" as pointed out by someone.
Charging my S7 Edge using Samsung official charger and noticed the same thing.
How does one explain why this does not happen with other phones? Namely my Nexus 5 and S6E

Samsung Fast Charge Wireless Charger Stand battery life ?

Hi im a little sceptical about this wireless charging, as i had a Galaxy S6 with witch i used a 5$ 1A wireless charger (with original fast charger head ) and i think it ruined my battery as when the phone got 15% there were occasions where the phone would get from 15% to 2% in just a minute and after plugging it in it would go immediate 10%. Now that i have the s7edge i don't want to make the same mistake again i was thinking of getting a genuine "Samsung Fast Charge Wireless Charger Stand ", my question is does wireless charging affect battery lifespan (on the long run) or is it the same as using wired fast charging. I really like to keep the stock battery and prolong its lifespan as where i live i don't have access to genuine replacement parts and would get a chinase fake battery and i would lose water resistance. Also i charge my phone over the night.

Fast wireless charging + nougat

Having some troubles with it after getting the nougat update. With MM I used to leave the phone charging all the night and in the morning it was not even warm, now with nougat is completely hot and we all know it's not good for the phone. Anyone noticed this too? Any way to fix it? I will try disabling the fast wireless charging and see how it goes, but it should charge phone slower when it reaches 100%?
Mine gets fairly warm when using fast charging, wireless or not. It's normal regardless of OS version.
It's fairly warm when charging but gets even warmer close to hot when its fully charfed. With MM in the morning the phone was cold because after 100% the charging was minimum but now it's hot could it be the problem of nougat?
you should NEVER leave your phone charging overnight ever.
colint3 said:
you should NEVER leave your phone charging overnight ever.
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Let me weigh in on this, if using fast charging, I recommend no wireless fast charging overnight, it will fully charge in the first hour of sleep and cook your phone for 7+ hours damaging your battery. However, fast charging overnight via usb does not produce any heat, so I would recommend usb for overnight.
colint3 said:
you should NEVER leave your phone charging overnight ever.
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Total BS... After 100% the charge is so minimum, if it would do some harm to battery it wont be a smartphone. Even the official Samsung wireless charger stops using fast charging after like 90%... At least the fan stops spinning. The fact I don't get is why it was ok with MM. Maybe it's not nougat, I noticed it only this week and had nougat for more then 2 weeks. Just asking if anyone noticed that too.

Fast wireless charging

Hey, thinking about buying the new fast wireless charger. Can someone who has a fast wireless charging pad tell me how long it takes to wirelessly fast charge the phone? Thanks
Mine takes around 3hrs to fully charge S8 from 10%
But I find out that wireless charging is much hotter than wired charging even though wire charging is nearly 2 times faster

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