I just picked up a wireless fast charger for use in my car, and found out (via one of those USB power meters) that the S7 isn't actually fast charging even though it says it is. When the screen is off and the device is fully idle, it will charge at 7-12W (power input to the wireless fast charger) but when the screen is on, it drops down to 3-5W which is not even enough to maintain state of charge if I'm doing something like a phone call or GPS navigation. Any ideas why this is? Seems like it might be thermal related. I've got root and various tweaking apps, is there a way to force it to do full 10W charging whenever possible and throttle CPU instead if needed for thermals?
Found the answer to part of my question here: http://androidforums.com/threads/galaxy-s7-wont-fast-charge-if-the-screen-is-on.1002329/
It's by design that if the temperature is too high or the screen is on fast charging is disabled. Question remains if this can be bypassed by root commands/tweaks or not.
jkenny23 said:
Found the answer to part of my question here: http://androidforums.com/threads/galaxy-s7-wont-fast-charge-if-the-screen-is-on.1002329/
It's by design that if the temperature is too high or the screen is on fast charging is disabled. Question remains if this can be bypassed by root commands/tweaks or not.
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It also depends on charger
As long fast charging is switched ON on your phone and the wireless charger does support fast charging, it will say that its fast charging.
However, if your phone while charging got hot or you are charging in a hot ambient temperature, the phone will charge at normal rates even less as the temps of the phone goes up. Thus the fan in the wireless charger
Btw am referring to the official samsung fast charger stand with a gs7, havent tried other brands.
Hope this helps
Hey guys,
I was looking for some clarification on this topic.
So I heard on a youtube video (can't remember which, for the life of me, I just know it was an S8 video) that Wireless Charging has a better impact on battery in the long run.
They had stated that the battery would continue to hold a better charge over time, where as, if you used wired charging, the amount of charge the battery can hold over time would be much less to when you first got it.
Now I do know that battery gets worse over time, however, I have never heard anything about how wireless charging can increase the longitivtiy of the battery.
Maybe someone on here might have more information on this?
I will try to find that youtube video but if this is the case, then I will definitely need to get a wireless charger.
Regards
Unless this youtuber tested 2 phones for a year, charging one with a cable and another with wireless charging i wouldn't listen to what they're saying.
peachpuff said:
Unless this youtuber tested 2 phones for a year, charging one with a cable and another with wireless charging i wouldn't listen to what they're saying.
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Yeah I agree. A believe a charge cycle is the same regardless of how it is being charged.
Would never think wired charging puts more stress on battery life.
I think though that with wireless charging once the phone is fully charged the pad cuts out so it won't over charge
With a wired connection when the phone is charged its still consistently trying to charge which can end up damage battering the long term
craigels said:
I think though that with wireless charging once the phone is fully charged the pad cuts out so it won't over charge
With a wired connection when the phone is charged its still consistently trying to charge which can end up damage battering the long term
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This is also what I have been wondering. If this is true then I may get a nice wireless pad for charging overnight (maybe the new official samsung "convertible" one but its damn expensive). I would have thought that the phone itself knows when a battery is charged and stops drawing the current from the cable though, so it would make no difference either way if that is true (but perhaps its not?).
But I did hear the exact opposite to op, that wireless charging was worse for the batteries, possibly due to the heat generated. But I don't know how true that is.
True
It's better for the battery because it charges it more slowly than a direct wired connection. There is no more heat buildup than using a wired charger, in fact likely less since the charging rate is lower.
As for the other comment that a wired charger doesn't shut off but keeps charging once the battery is full is patently false. The charging circuits whether wired or wireless are quite intelligent and gradually ramp down the charging current as the battery approaches capacity, ultimately delivering just enough current to keep the phone running. In a closed system the energy has to go somewhere and if the charger didn't do this you'd have 18W of power being dissipated as heat and a serious problem on your hands.
craigdamey said:
It's better for the battery because it charges it more slowly than a direct wired connection. There is no more heat buildup than using a wired charger, in fact likely less since the charging rate is lower.
As for the other comment that a wired charger doesn't shut off but keeps charging once the battery is full is patently false. The charging circuits whether wired or wireless are quite intelligent and gradually ramp down the charging current as the battery approaches capacity, ultimately delivering just enough current to keep the phone running. In a closed system the energy has to go somewhere and if the charger didn't do this you'd have 18W of power being dissipated as heat and a serious problem on your hands.
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For wireless I believe the heat generated is more, it is about the method of delivering the power, not the speed. The induction used to transfer power wirelessly is obviously going to be far less efficient and will generate more heat to get even a slower transfer rate then getting the power straight down a cable (but if someone knows otherwise then feel free to correct me). But then I guess the slower charging rate might also put less stress on the battery which is probably good.
For the wired, what you are basically saying is that leaving a phone plugged in to a wired charger will not harm it since the current will have been reduced in the same way a car battery charger might reduce it to a "maintenance" mode once it is fully charged. So people are believing the old myths that you can overcharge a phone, which would seem to be impossible (although I do wonder why they keep slapping up notifications saying things like "FULLY CHARGED! UNPLUG CABLE!" as if leaving it plugged in would in some way damage it!).
Just saw this which explains the overcharging possibility (or lack of)
http://www.androidauthority.com/leave-phone-plugged-overnight-703078/
ewokuk said:
For wireless I believe the heat generated is more, it is about the method of delivering the power, not the speed. [/url]
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The coils themselves don't generate a significant amount of heat, it's the battery itself that causes the phone to get hot. Slower charging means less heat, which is better for your battery so wireless charging will increase your battery life. As the article notes it is also best to keep your phone above 40% charge, partly because fast chargers slow down significantly after 50% to save the battery. That initial burst from 0-50% is done to save you from a dying battery but it takes its toll.
Also note that the S8/S8+ have new battery technology that provides much improved battery life. They're saying 5% loss of capacity after two years compared to 20% for previous generations.
As a bonus not continuously plugging/unplugging a cable from your USB port will make that last longer too. I hardly ever plug my S7 Edge into a physical cable, and I know quite a few people who have killed their USB ports and can no longer charge and or transfer data from them.
craigdamey said:
The coils themselves don't generate a significant amount of heat, it's the battery itself that causes the phone to get hot. Slower charging means less heat, which is better for your battery so wireless charging will increase your battery life. As the article notes it is also best to keep your phone above 40% charge, partly because fast chargers slow down significantly after 50% to save the battery. That initial burst from 0-50% is done to save you from a dying battery but it takes its toll.
Also note that the S8/S8+ have new battery technology that provides much improved battery life. They're saying 5% loss of capacity after two years compared to 20% for previous generations.
As a bonus not continuously plugging/unplugging a cable from your USB port will make that last longer too. I hardly ever plug my S7 Edge into a physical cable, and I know quite a few people who have killed their USB ports and can no longer charge and or transfer data from them.
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Yeah I am torn at the moment between using cable and getting a wireless charger. I like my stuff charged asap but that's partly because i never leave it plugged in overnight and want it charged before bed (which I now know is not a problem anyway) and partly because i want to be able to unplug it to use it if i get a message or email, which isn't an issue with wireless as I can just pick it up and put it back on there after. I assume taking it off the charging pad and putting it back on will not have any detrimental effects to the battery. I am just trying to weigh up the pros and cons of each. All things considered I am leaning towards wireless, particularly if it isn't worse for the battery (although lets face it the difference in degradation between wireless and wired, is going to be so small it's probably not even noticeable after a couple of years by which time I would have a new phone anyway). I wonder if there is a better wireless charger which will be more future proof than the new convertible samsung one (in case I ditch samsung in future) and still give max speed, I would like one that is tilted so I can see the screen though.
My s5 is 3 years old and has only ever been charged by the massive double width "micro USB" cable which takes some force to get in and out of the socket. Still works perfectly though. Never had any usb port of any kind on any device fail, no idea what these other people are doing to kill them!
ewokuk said:
Yeah I am torn at the moment between using cable and getting a wireless charger.
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Having the dock by my bed is very convenient. Just place it on at night and pick it up during the morning. If I need to grab it for anything I can without getting tangled up in wires and it even sits at the right angle so that the always on display becomes my nightstand clock/alarm clock. Once you've gone wireless you won't go back.
craigdamey said:
Having the dock by my bed is very convenient. Just place it on at night and pick it up during the morning. If I need to grab it for anything I can without getting tangled up in wires and it even sits at the right angle so that the always on display becomes my nightstand clock/alarm clock. Once you've gone wireless you won't go back.
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I always turn my phone off at night anyway so I don't get disturbed by some spam message or something (I know I can probably set it up to be silent at certain times, but then why leave it on at all, using the battery for nothing). £70 for that Samsung charger though!! I know there are much cheaper ones but I am not sure they will charge at the same rate, the new samsung one charges faster than any previous wireless charger AFAIK and I would want one where the phone can sit up, and most are just flat. Hmmmm although the do have it for £50 on amazon sold by "fonejoy", still steep though.
This one looks good https://www.amazon.co.uk/CHOETECH-W...=UTF8&qid=1492192247&sr=1-9&keywords=choetech but not sure if itll charge at the same speed as the new samsung one and doesnt use a USB-C connector which probably rules it out. May as well just get the samsung one.
I use the US version of this and it works fine. https://www.amazon.co.uk/d/Mobile-P...d=1492192742&sr=1-5&keywords=rav+power+qc+2.0. The Fast Charging Dock comes with a cable so that should be all you need.
And yes, I have my Do Not Disturb settings to suppress notifications 10:30PM to 6:30AM. Wife complained she couldn't sleep with all that noise going on
craigdamey said:
I use the US version of this and it works fine. https://www.amazon.co.uk/d/Mobile-P...d=1492192742&sr=1-5&keywords=rav+power+qc+2.0. The Fast Charging Dock comes with a cable so that should be all you need.
And yes, I have my Do Not Disturb settings to suppress notifications 10:30PM to 6:30AM. Wife complained she couldn't sleep with all that noise going on
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Thats a wall charger? I'm talking about the charging pad itself. I believe the new Samsung one outputs 15w so is faster than any previous ones which are all 10w I think.
ewokuk said:
Thats a wall charger? I'm talking about the charging pad itself. I believe the new Samsung one outputs 15w so is faster than any previous ones which are all 10w I think.
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There are only two types of charging dock, standard and fast-charge. None of them output 15W to the phone. The expensive Samsung is just a fancy fast-charge dock so it will charge at the same rate as the Seneo and others that support fast-charge. The Samsung fast-charge adapter only provides a maximum output power of 15W (9V @ 1.67A) so it would require 100% transfer efficiency to charge the phone at that power, and in reality it's only about 65% so at most you'll see 10W versus standard Qi charging at around 7W.
All of the Seneo chargers I have coupled with RavPower or Samsung Fast-Charge adapters charge at the same rate (10W to begin with tapering off to 7W above 50% charge).
craigdamey said:
There are only two types of charging dock, standard and fast-charge. None of them output 15W to the phone. The expensive Samsung is just a fancy fast-charge dock so it will charge at the same rate as the Seneo and others that support fast-charge. The Samsung fast-charge adapter only provides a maximum output power of 15W (9V @ 1.67A) so it would require 100% transfer efficiency to charge the phone at that power, and in reality it's only about 65% so at most you'll see 10W versus standard Qi charging at around 7W.
All of the Seneo chargers I have coupled with RavPower or Samsung Fast-Charge adapters charge at the same rate (10W to begin with tapering off to 7W above 50% charge).
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Ahh ok, I will have to check out a few seneo pads.
If your using fast charging AKA Adaptive charging it shouldn't matter either way. The Fast charging port on the phone, and the wireless charging should go through the phone and the phone should automatically stop all charging going to the battery. This is the reason why if you were to leave your fast charger on all night whether it be Wireless or wired, you can pick your phone up at 99% or 98% instead of 100%. The phone stopped charging, then when it drops to a certain % it starts to charge up again.
As far as which is actually best for strain, it shouldnt matter because afaik to the battery its the all the same. Wireless charging just has some coils almost that send the charge wirelessly, but it still goes to the same place.
This is what I have read from google, so I am no expert on the subject, but it seemed pretty legit, and makes sense to me, a person with a Tech background. If anyone knows better please be my guest.
I'm going with wireless charging pads at home but a magnetic cable for in the car.
Not found a good car holder that has the wireless pad built in so I will stick with my ibolt for a bit longer
Sent from my SM-G935F using Tapatalk
There is no correct answer to this question. Battery life is function of many things -
1. Every battery has specified charge cycle. One full charge from min to max is 1 cycle. Two full charge from mid to max is also 1 cycle. So the more you use your device, charge cycles will come to an end more quickly. For example if you use two similar spec phones; first one you use heavily requiring full cycle charge everyday vs second which you use less and requires full charge every alternate day (or to phrase in other way, first is almost completely discharged by evening, second is half discharged). So the theory goes that second phone battery will last double the time than first.
2. Every battery articles you read, you will find recommendation to charge battery in specified current or usually slow charging. Today's battery technology should be immune to this but I still turn fast charging off. It is likely that not all the batteries are immune.
3. Heat is bad for battery. Some wireless chargers heat up. The TYLT VU that I use get uncomfortably warm when I place phone vertically (possibly coils do not align and multiple of them gets activated). Heat build up is there during fast charging too. If you play CPU intensive games and charge at the same time, phone gets warm. All this heat is working negative to the life span of battery.
4. Lithium ion batteries have less chemical stress when they are not fully charged or fully discharged. If you research you will find articles telling one to keep battery between 40% to 90%. Hence I usually do not charge to 100% and if I do, I watch or play games to bring battery level down. Search for best charge level to store lithium ion batteries, I think it is from 45% to 50%. This I guess keeps batteries at the least chemical stress state. So do your maths if you are type who likes to keep battery at 100% charge at all the times.
As you can see there is no straight answer to this question. Battery life is function of all these factors.
Added: I didn't read full article but you can check this link which speaks about impact of heat and leaving battery to full charge state.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Thanks for everyones input on this!
By the way, not sure if it has been mentioned, but this is a pretty cool read:
http://www.androidpolice.com/2017/0...ill-degrade-less-quickly-than-the-galaxy-s7s/
So looks like the S8 won't deteriorate as much over time!
I got the OEM samsung convertible fast charging pad but it doesn't come with a wall plug as I read somewhere (I guess thats just us in the UK getting screwed over yet again). The manual says "Use only Samsung-approved chargers that support fast charging (9v/1.67A, 9v/2A, 12v/2.1A).". So I need a wall plug that will be able to provide the fastest charging speeds from it (which I am guessing is one that does 12v/2.1A??). I dont think all the standard plugs with 2.4a sockets are going to do it right? The "30w" RAVpower one that craigdamey linked says it can do 12v/2A but only for QC3.0 (which I obviously wont get since its just being plugged straight into the charging pad), otherwise its 5v/2.4a. Not sure what one to get now. Theres an Anker 24w one but that says 2.4a per port (I know little about electrics and how these things work!).
Is it safe to charge my battery with my LG G6 USB C cable(16W adapter)? I know that the Pixels one has a 18W but I don't want to risk reducing battery life or damaging it in any way. I get 30hours of life and I'd like to keep it like that as long as I can. Thanks in advance.
samsung striker said:
Is it safe to charge my battery with my LG G6 USB C cable(16W adapter)? I know that the Pixels one has a 18W but I don't want to risk reducing battery life or damaging it in any way. I get 30hours of life and I'd like to keep it like that as long as I can. Thanks in advance.
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It is perfectly safe to charge. It is safe even if the charger has more power than the stock one (not in your situation).
The labeled charging power is actually the MAXIMUM possible power that the adapter can deliver, which is not always the case (charging speed drastically decreases when the battery is nearly full).
I personally use even a lower wattage charger in order to preserve the battery. Frequent quick charging can reduce the battery lifetime, so it's better that you slow charge if there is no rush (i.e. charging overnight).
Question!
How do you charge your phone? What type of charging do you have selected?
-fast charging
-super fast charging.
I use a 25W charger and I have super fast chargers selected. I try to charge the phone in the range from 30% to 85%. I also have the battery protection option selected
I always use wireless charging, and I place it on the charger when I go to bed, and pick it up when I get up, as I have for the previous S20 Ultra, and before that the S10+, and the S5 before that. I have never had a battery problem, don't baby it, use it!
Osushi said:
Question!
How do you charge your phone? What type of charging do you have selected?
-fast charging
-super fast charging.
I use a 25W charger and I have super fast chargers selected. I try to charge the phone in the range from 30% to 85%. I also have the battery protection option selected
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I use the 45W (SUPER FAST CHARGING 2.0) and of course enable all options for battery health.
larryk said:
I always use wireless charging, and I place it on the charger when I go to bed, and pick it up when I get up, as I have for the previous S20 Ultra, and before that the S10+, and the S5 before that. I have never had a battery problem, don't baby it, use it!
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I do the same as you. Have wireless charger on my bedside table and one in my car. That's all I use and don't worry about battery dying on me.
I bought an Anker 45W charger, and I have a question.
On my first days, should I use it or use a normal charger? Use health protection or not?
After those few days, I have a meross Smart Power strip , WIFI, that I can schedule each plug individually, even the USB ports. I usually put 2 hours charging for my actual phone and 1 hour for my Galaxy Watch 4. Is this ok? Can I keep the 2 hours for the s22 ultra or reduce the time, since I'll use a 45w?
Thanks for the advice!
I plug it into a 25 watt charger at night. Unplug it when I wake up. Charge as needed throughout the day.
Currently on my 3 year old Note 9, awaiting delivery of my S22U, as with previous phones, I disable fast charging, if the phone has the feature, as it generally isn't good for battery life expectancy. I always plan to keep my phone longer than the one or two years many people do, so battery health/life is important to me. I have a timer-socket adapter, like this, I use for through-the-night charging, whereby, I set a timer duration, depending on the battery level at bedtime. I'll perhaps set the timer to be on and charging the phone between 4 & 5:30am. Apart from the first few charging cycles of a new phone, I don't like to fully charge/discharge the phone often, only occasionally. I top the charge up during the day, if need be, in the car etc but I never use wireless charging even though my car has the ability to. I'll probably start using the wireless charging with my S22U though, as not using it probably doesn't lengthen the expectancy by much. I appreciate battery charging technology has improved greatly recently, I'm just stuck in my ways I guess.
Everybody is talking about charging the phone between 20% and 80% but what about the result? What would the capacity of the phone be in the end of three years of usage if someone charges his phone in that range? and another thing, when you charge your phone, from 20% to 80%, you charge your phone more often than compared to 0-100%. It's said that If you charge your phone more often it's battery will wear off faster, in the other hand you will charge it less with 0-100 but this time your battery will wear of faster because of the known reasons. I'm a bit confused here. Is there any data compares the result of the both cycles after some time?
Baseus 65W GAN charging brick. Bixby Routines set to disable super fast charging at night and enable Battery Protection. I have another automation that reverses that before my wake up alwarm so it's still full when I wake up but stressed the battery less.
Hi.
I'm thinking about using a 5w apple adapter to charge my S22U whenever I'm not in a hurry in order to extend battery life. Is this safe to do? Anyone here using this? It kind of concerns me to use any non-oem chargers with such an expensive device.
Thanks
Rather pointless. Simply use a 15w brick or disable fast charging. Charging to and storing at 100% puts a lot of extra stress on the battery.
Limit low end discharge to 30-40% and top charge of 62-72% to extend battery life.
Avoid starting a charge if battery is below 72F, preferably between 82-90F.
Avoid going over 103F
NEVER attempt to charge a Li that's below 40F
Almost all USB chargers will default down to the lowest common denominator and give you basic USB level charging. But unless you have no other options...why bother?
The Samsung 25w brick has a very wide input voltage range. It will even charge on 60VAC.
I have 2, both bricks and cables are still working after over 2.5 years.
blackhawk said:
The Samsung 25w brick has a very wide input voltage range. It will even charge on 60VAC.
I have 2, both bricks and cables are still working after over 2.5 years.
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I still have every charger dating back to the note 5 days and probably every one from before then tossed in a junk drawer. I shouldn't be such a packrat.