Database Users

[Q] Will keeping my Transformer and Dock charged ruin the battery?

Hello!
This is my first post here on the forums. I had a question about my tablet and dock... is it ok to keep them charged (above 80 percent throughout the day?). The battery just doesn't go down, and it's a force of habit to just charge it when I go to sleep. Will the battery life potential decrease over time? Should I let it run out every time I charge it?
Thanks

Tryptonaut said:
The battery just doesn't go down,
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Tell me about it i'd get about 32hrs of use out of both Tab and Dock! but i charge it up every chance i get, i can't see it doing any harm.

I believe that's a bad habit, it's better to charge when u think u r gonna use it for next 6 hours even when the battery is still above 50%.

I know its meant to be bad habit charging when you don't need it but I wonder how much of that is true anymore and how much is just legacy from the old tech?
I know the new batteries don't suffer as much these days with over charging and they don't discharge like they used to. The actual devices have gotten better as well by stopping charge when they detect the battery is full.
So where does the legacy / rumor end and the truth begin? Its one thing to say "best practice is to fully charge & discharge" but unless you charge when you can you might run out of power without proper planning

It's old tech, these days the chargers themselves regulate the current to the battery dynamically anyways so you can keep it plugged in all you want. The only reason they tell you to drain it/charge it fully once in a while is for Android battery calibration, not because the battery will die.

leonpr said:
I know its meant to be bad habit charging when you don't need it but I wonder how much of that is true anymore and how much is just legacy from the old tech?
I know the new batteries don't suffer as much these days with over charging and they don't discharge like they used to. The actual devices have gotten better as well by stopping charge when they detect the battery is full.
So where does the legacy / rumor end and the truth begin? Its one thing to say "best practice is to fully charge & discharge" but unless you charge when you can you might run out of power without proper planning
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I think that rumor has existed for long time. I still remember the first time I bought my laptop around 2005. this battery issue came into my consideration. searched here n there and I came into conclusion that my new laptop should adopt the 'stop charging when its full '. but I regret that, my laptop battery life drop fast less than one year.
and till now, I never want to take that risk again on my laptop, phone, n epad. well one thing for sure someone have to prove it, I hope you can report back in 6 month

http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Pretty informative article about lithium batteries, which is what's in the tf.
Basically, partial charge is better than full charge. Do not run the battery dry though, very bad for lithium batteries to be discharged too much. The adapter does sense a full charge and will stop, so no worries about overcharging or thermal runaway.
Sent from my Transformer TF101 using XDA Premium App

Oh.Y.Not said:
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Pretty informative article about lithium batteries, which is what's in the tf.
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Specifically, it's lithium polymer, which is this article:
http://batteryuniversity.com/learn/article/the_li_polymer_battery_substance_or_hype
However yes, for most intents and purposes, li-poly behaves similarly to standard li-ion.
Partial charge is only better than full charge if the manufacturer hasn't set the cut-off point when charging *below* full charge already, though. That, only ASUS really knows so far.

[Q] Keeping the Nexus 10 plugged-in

I have read conflicting articles on increasing the battery life of Lithium-ion batteries (the ones used in Nexus 10). Most of the Lithium ion batteries have a lifespan of 300-400 charge/discharge cycles. From my understanding, this means that it is bad to fully discharge the batteries and then recharge them as it reduces from the above mentioned lifespan and it is better to top-off the battery often as possible.
In fact there was an article that I read on Cnet specifically for the iPad (I'm not allowed to post outside links for some reason, google: "ipad keep plugged in" and the first article in the search result) , where they recommend to keep the iPad plugged-in whenever possible to increase the battery life.
I use my Nexus 10 a lot at house. So, Is it better to keep it plugged-in all that time?

roshanpius said:
I have read conflicting articles on increasing the battery life of Lithium-ion batteries (the ones used in Nexus 10). Most of the Lithium ion batteries have a lifespan of 300-400 charge/discharge cycles. From my understanding, this means that it is bad to fully discharge the batteries and then recharge them as it reduces from the above mentioned lifespan and it is better to top-off the battery often as possible.
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This is correct.
In fact there was an article that I read on Cnet specifically for the iPad (I'm not allowed to post outside links for some reason, google: "ipad keep plugged in" and the first article in the search result) , where they recommend to keep the iPad plugged-in whenever possible to increase the battery life.
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The life span of LiIon/LiPoly batteries is also reduced when the battery is at or near 100% for a prolonged time. Don't think too much about it, just use the N10 and recharge it often. I usually try to plug it back in around the 70% mark.
It's also quite easy to open up the tablet, you only need a screwdriver and a plastic prying tool and then you can change the battery yourself, if it ever should become necessary (unlikely, unless you plan to use it for ~5 years).
> http://www.powerbookmedic.com/wordpress/2012/11/16/google-nexus-10-take-apart-first-look

i don't care about it... i leave it plugged whenever i can
chances are, those who take "good care" of their battery may end up with 10% more life in 2 years.... and frankly, i couldn't care less about that
not worth the hassle of worrying about batteries anymore

Best practice actually is to drain to 40% and charge up to 80%. Dropping to 90% and charging back up to 100% a bunch is still bad for your battery, as is leaving it plugged in over night when it reached 100% long before you wake up.

EniGmA1987 said:
Best practice actually is to drain to 40% and charge up to 80%. Dropping to 90% and charging back up to 100% a bunch is still bad for your battery, as is leaving it plugged in over night when it reached 100% long before you wake up.
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It stops charging upon reaching 100%.

Its hard to follow those instructions when your out 24 hours a day, or maybe you just want to use your tablet
Don't worry about doing extra stuff.. like the user said I could careless..
Just don't let your device die, charge it once it hit like 15%..
Saying charge your device once it at 70% is like only driving your car for 5miles and putting it back in the garage and walk the rest of the way..
Sent from my Nexus 10 using Tapatalk 2

YoungAceAtlanta said:
Saying charge your device once it at 70% is like only driving your car for 5miles and putting it back in the garage and walk the rest of the way..
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I didn't say you have to do that. If it's possible I recharge early, if not I just use it anyway.
Doesn't really matter too much since the battery can be exchanged rather easily if it ever comes to that.

BoneXDA said:
It stops charging upon reaching 100%.
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Yes, and then it drains a bit and goes back to charging, over and over the rest of the night.

I've read that Li-ion batteries don't like "deep cycles", that is, fully dischanging then fully charging, because this shortens the battery's life. Also that it's not good to have it at 100% for a prolonged time. So it would be best to always have the device partially charged, plugging it if below 50% and unplugging at 90%. When the battery reaches 90% some phones even notify you that "the battery is full, and you can disconnect from charger"
Source: http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

[INFO] Maintain Long-term Battery HEALTH

This is a topic that I don't think has been covered here yet, but is very important. Especially because we cannot replace our batteries.
I'm interested in finding out the best way to prolong the life of our batteries. In other words, I want it to continue holding a charge as close to specs as possible.
I am NOT talking about extending the use we get out of one full charge.
Upon googling, I found these two useful articles:
http://lifehacker.com/5875162
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
From reading those, this is what I gather:
We should not leave our devices plugged in at 100%
Best practice would be to use phone until 50% then charge
Charging to 100% actually causes the battery stress. Charging to 90% or so is better.
I think these few facts are right, since my Thinkpad has a function that stops charging at 90% and doesnt start charging again until below 60% (or whatever values you choose).
What I'm not sure about, is what has HTC done to help prolong battery health?
Does our phone automatically switch to using power straight from the charger at 100% instead of charging and draining the battery simultaneously?
Does any phone do that?
Battery health is likely the reason why our phones charge so slowly. Slow charging = less stress = better battery health.
I've also emailed HTC to see if they have any tips. Their manual contain no tips.
UPDATE:
Okay, so HTC got back to me.. amazingly quick. lol
Its a long email, which I wont paste here, but the one important part is this:
It is better to unplugged your phone from the wall once the battery reach 100% and once the battery indicates that the battery percentage is about 15% you should plug the phone to the wall charger.
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That is what the guy said, word for word. The rest of the email diverges and talks about general battery saving tips.
So what the HTC rep says seems to fall in line with the three points I got from the articles I read.
Only difference being HTC recommends going all the way down to 15% before charging.. Hmm

Honestly, considering most of us get a new phone after a year or so, we're not going to see any huge hits in battery performance even if we don't follow these "rules". Not to mention I'm REALLY not going to wake up in the middle of the night to unplug my phone just so it doesn't stay at 100% all night. Just charge the battery in whatever way's the most convenient.

Useful post thanks for sharing.
Sent from my Nexus 7 using xda app-developers app

jason27131 said:
Honestly, considering most of us get a new phone after a year or so, we're not going to see any huge hits in battery performance even if we don't follow these "rules". Not to mention I'm REALLY not going to wake up in the middle of the night to unplug my phone just so it doesn't stay at 100% all night. Just charge the battery in whatever way's the most convenient.
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You might be right. But I bet there are a few people out there who are on 2-year contracts or just don't think they'll give up their HTC One so easily.
I personally love the design of the device and want it to last as long as possible.
I haven't felt this way about a phone since my Xperia X1, which I did eventually give up because I already replaced the housing twice, the mainboard was starting to have issues, and Windows Mobile 6 was just **** lol.
Anyway, under normal use these batteries should be fine for a bit. But unintentional abuse can wear them down faster than you think. At least thats what I get from these articles. And thats been my experience in the past with laptops and cellphones.
I too probably wont be waking up at night to unplug my phone or buying a timer to automatically stop charging my phone. But when I can adhere to these guidelines, I'll try my best to.
------
jonny68, no problem, glad this is useful.

These batteries have electronics to protect them, you wont be doing the battery any damage how you use it other than using your phone a lot and putting a lot of cycles through it. They never let you drain your battery 100% and they never let your charge 100%, it just shows 0-100% for the ease of the consumer. You cannot over charge your phone, if you could there would be a lot of issues out there.
Fact is just use your phone how you use it.

Terrorantula said:
These batteries have electronics to protect them, you wont be doing the battery any damage how you use it other than using your phone a lot and putting a lot of cycles through it. They never let you drain your battery 100% and they never let your charge 100%, it just shows 0-100% for the ease of the consumer. You cannot over charge your phone, if you could there would be a lot of issues out there.
Fact is just use your phone how you use it.
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But that isnt entirely true.
Yes, our batteries now have mechanisms to stop overcharge and deep discharge.
But these same mechanisms do not provide longevity. Instead, our batteries are geared more towards providing the most use per charge without damage.
It is done this way for obvious reasons. It also means we have a choice about whether or not we want to sacrifice a small bit of convenience or capacity now, for a better battery later in time.
For example, this chart from the second article I linked shows that if you charge only to 90%, your battery can go through double the charge/discharge cycles before dropping to 70% health as compared to charging all the way to 100%

Quote from the article:
"Should I disconnect my laptop from the power grid when not in use?” many ask. Under normal circumstances this should not be necessary because once the lithium-ion battery is full the charger discontinues charge and only engages when the battery voltage drops. Most users do not remove the AC power and I like to believe that this practice is safe.
Like i said, this is all pointless, because 100% of us charge our phones overnight, and 0% of us are willing to wake up 3 hours into our sleep to unplug it at 90% or 100%.

jason27131 said:
Those talks about voltages, not charge level btw.
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http://en.wikipedia.org/wiki/State_of_charge
Reading voltages is one of many methods of determining how much charge is left within a battery. Hence the other column in that table.
You cant just stick a meter on a battery and read how many mAHs are left.
EDIT:
jason27131 said:
Quote from the article:
"Should I disconnect my laptop from the power grid when not in use?” many ask. Under normal circumstances this should not be necessary because once the lithium-ion battery is full the charger discontinues charge and only engages when the battery voltage drops. Most users do not remove the AC power and I like to believe that this practice is safe.
Like i said, this is all pointless, because 100% of us charge our phones overnight, and 0% of us are willing to wake up 3 hours into our sleep to unplug it at 90% or 100%.
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Right, and that is true for some laptops as some of them do tend to have more sophisticated battery management software/hardware. I mentioned my own Thinkpad and its functions in this OP.
I was curious as to if our phones do the same thing as laptops; disengage the battery at 100% charge and run off AC only. But it does not, as per HTC's reply suggesting phones should be unplugged once at 100%.
And for your other point, I already addressed that. I'm not saying this is essential or that everyone should follow these guidelines. But to some people this does matter, and this post is for them.
As for myself, I'll use yesterday as an example.
I got home from work at around 6:30PM, my phone was down to 30-40%, so I plugged it in.
Before I went to bed, the phone had hit 93%, so I unplugged it and left it there with wifi on.
I wake up, its lost like 3-5%, no big deal.
Around lunch time its dropped to 30% at work, so I plugged it in.
It reached 89% a few minutes ago, so I unplugged it.
So when its convenient for me to do so, I follow these guidelines. If I know I have a long day ahead with no access to a charger, or if I need to charge overnight, then so be it, I'll let it sit at 100% until I have to leave.

Technically speaking this is all correct and a guideline to try to follow. That's all. If it's impossible to do, the phone will be okay. That being said, I am of the belief that if there is a better way to do something, we should at least try to do that. I for one love this device and may never sell it. This is one of those iconic builds that I wonder how much more of its class we will see. Even right now as the music pours out of these front speakers, my love for it grows.
I just wanted to add my 2 cents. And this little tidbit:
Every 100mv less than full charge you apply, will double the lifespan of the battery. So, a rough approximation,
Charge the phone to 100% (4.3v) , discharge to about 15% You'll get roughly 250-500 cycles.
Charge to 90% (4.2v) down to 15, you'll get 500-1000 cycles.
80% (4.1) 1000-2000 cycles.
Cycle count will increase by avoiding deeper discharges...
In a perfect world, you could potentially get 2000-3000 cycles by
1. Charging to 80% or ~ 4.1v
2. Avoiding discharge below 30% or ~ 3.6v
3. Avoid extreme temperature changes and prolonged exposure to temperatures above 45c
Most of this comes from personal experience and much research. Check out battery university if you get some time.
Sent from my HTC One using xda app-developers app

By last do you mean until the battery reaches 70% maximum capacity? Honestly, at 1000 cycles, thats already good enough since thats 3 years worth of charging at roughly 1 cycle a day. I doubt I will keep this phone past 2 years.

m0nz said:
Technically speaking this is all correct and a guideline to try to follow. That's all. If it's impossible to do, the phone will be okay. That being said, I am of the belief that if there is a better way to do something, we should at least try to do that. I for one love this device and may never sell it. This is one of those iconic builds that I wonder how much more of its class we will see. Even right now as the music pours out of these front speakers, my love for it grows.
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That's exactly how I feel, and the reason why I started the thread :victory:
Your figures fall close to the ones in the articles, so it sounds bout right.
Im curious though, does unplugging/replugging have any effect on the charge/discharge cycle?
For example, if i'm charging my phone but i need it for something, I unplug it, use it, and plug it back in.
That shouldn't have any effect am I right?

You have to define what you mean when you talk about how long a battery "lasts".
We're specifically talking about deterioration in capacity over time.
The battery will "last" for 100,000 cycles in the sense that you will still be able to charge it and it will still be able to power a device on its own for a period of time. The question is how short does that period of time get before you say "this battery isn't useful anymore"
This came up in another thread and the threshold discussed there was 80% of original capacity. Apparently HTC rates the One's battery "lifetime" as 500-700 charge cycles until the battery capacity drops to 80% of its original level. (You also have to define charge cycle: charging from 0-100 or anything that adds up to that, such as charging from 40 to 90 on one day followed by charging from 40 to 90 on another day - counts as one "cycle".)
So this battery could "last" - in the sense that it will still have 80% of its useful capacity - for 3000 cycles if you follow some of the more conservative approaches above.

I don't know how typical my behavior is, my last three phones were bought via two year contracts, each phone was replaced after about one year, when the next-generation model appealed to me.
Don't imagine too many buyers of "flagship" devices keep their phone for over two years.
Sent from my HTC One using xda app-developers app

NxNW said:
You have to define what you mean when you talk about how long a battery "lasts".
We're specifically talking about deterioration in capacity over time.
The battery will "last" for 100,000 cycles in the sense that you will still be able to charge it and it will still be able to power a device on its own for a period of time. The question is how short does that period of time get before you say "this battery isn't useful anymore"
This came up in another thread and the threshold discussed there was 80% of original capacity. Apparently HTC rates the One's battery "lifetime" as 500-700 charge cycles until the battery capacity drops to 80% of its original level. (You also have to define charge cycle: charging from 0-100 or anything that adds up to that, such as charging from 40 to 90 on one day followed by charging from 40 to 90 on another day - counts as one "cycle".)
So this battery could "last" - in the sense that it will still have 80% of its useful capacity - for 3000 cycles if you follow some of the more conservative approaches above.
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Hm, yea I should update my OP with that info. The articles I referenced seem to define a battery's lifetime as the number of cycles it can go through before hitting 70% of original max capacity.
paul_59 said:
I don't know how typical my behavior is, my last three phones were bought via two year contracts, each phone was replaced after about one year, when the next-generation model appealed to me.
Don't imagine too many buyers of "flagship" devices keep their phone for over two years.
Sent from my HTC One using xda app-developers app
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Not sure, but in the past I've always seemed to kill my phone's batteries before I replaced the phone itself lol.
If I look back now, that was probably because I always drained to 0% and let my phone stay plugged in at 100%. So basically I was always doing the worst thing possible, short of literally cooking my battery >.>

Nippero said:
Hm, yea I should update my OP with that info. The articles I referenced seem to define a battery's lifetime as the number of cycles it can go through before hitting 70% of original max capacity.
Not sure, but in the past I've always seemed to kill my phone's batteries before I replaced the phone itself lol.
If I look back now, that was probably because I always drained to 0% and let my phone stay plugged in at 100%. So basically I was always doing the worst thing possible, short of literally cooking my battery >.>
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I really don't think that's it. I have done that with EVERY phone i've had, GS3, Nexus, etc. After a year i didn't see any major battery difference, and I plug it in at least once a day, sometimes 2 times.

jason27131 said:
I really don't think that's it. I have done that with EVERY phone i've had, GS3, Nexus, etc. After a year i didn't see any major battery difference, and I plug it in at least once a day, sometimes 2 times.
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The difference may be how much we use our phones then, because with my last phones I typically used my phone quite frequently at work since many websites are blocked. Including open source code sites which actually help me with my job... stupid corporate proxy.
Anyway, I used to leave my G2 and Photon Q plugged in all day at work and at night. So thats 16hrs of being plugged in per day... Probably wasnt good for them.
But hey, if you're right and I'm wrong, I'll be even happier cause that means my battery will be fine no matter what I do lol.
However, battery deterioration isn't a myth, and it does happen. Only question is, how much does it happen.

Nippero said:
The difference may be how much we use our phones then, because with my last phones I typically used my phone quite frequently at work since many websites are blocked. Including open source code sites which actually help me with my job... stupid corporate proxy.
Anyway, I used to leave my G2 and Photon Q plugged in all day at work and at night. So thats 16hrs of being plugged in per day... Probably wasnt good for them.
But hey, if you're right and I'm wrong, I'll be even happier cause that means my battery will be fine no matter what I do lol.
However, battery deterioration isn't a myth, and it does happen. Only question is, how much does it happen.
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Ya i tend to just leave it overnight for about 7 to 8 hours. Sometimes during the day i might plug it in for an hour or so to grab some juice on my s3, something i haven't had to do on my One which is awesome (get about 2 days worth). Battery deterioration definitely does happen, but hey, if I have enough juice at the end of a year to still last me a day, I'm happy

I'm always on a 2 yr contract, no need to really worry about this, but good info none the less.

dont worry op .. ill put my battery in the many " to be taken care off" list.
ill make sure its in the list.
somewhere

If the ONe is anything like the HoX, the charger stops charging at 100%, then lets it drop to 95% before restarting trickle charge. However, the 95% battery state isn't immediately shown on screen, so many people use their phone then see a whole 5% jump downwards almost immediately. I haven't paid much attention to the HO yet, so I can't comment

Charging overnight?

Would there be a problem with charging the Z2 overnight knowing that is will reach 100% before you wake up, lets say 2-4 hours before you wake up? I have not experienced any over heating with the phone yet but I am worried that it will happen while its charging overnight without me knowing.
I heard that the new batteries stop charging when they reach a 100% is this true?

Yes it will stop charging when it reaches 100%. It's been like that for a while, even my S3 got that.
Leaving it overnight will be no problem (Well should be no problem, I don't have the phone yet)

90 or more % of people do this in that way. There is absolutely no risk. When 100% will be reached, charging will be stopped and phone will use battery power. Eventually after couple hours charger will refill battery ex from 99 to 100%.

Alright that's good to know. my phone is charging right now but its quite cold. Guess the over heating problem was in some devices only.

I thought the overheating problem only occured when recording in 4K. I haven't had any issues with heat except when recording long sessions.
Sent from my D6503

I also did not hear about overheating during charging over the night...

You can leave it on and not worry about heat, but here's the thing: the phone obviously stops charging at 100%, but once it stopped, the phone starts discharging, then it recharges to 100% again, discharges, recharges and this goes on until you pull it off. So while you can safely leave it on cause nothing dangerous will happen to you or the phone, know that it will be in a charging loop which can't be good for the battery.
Ideal thing would be the phone stopping charging altogether at 100%, and not recharging until hitting like 95%. Right now, when it notices the tiniest drop, it will recharge.

^ True. I think it's really NOT good for battery to be charged overnight.

I've done this with all my smartphones. My s3 have charged almost every night for two years. It still lasts a day. I don't think it harms charging it over night.
Sent fra min GT-I9300 via Tapatalk

nikola1970 said:
^ True. I think it's really NOT good for battery to be charged overnight.
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So please give us a better, convenient way.

cedropol said:
So please give us a better, convenient way.
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Technology expert "Eric Limer" explaining about overnight charging and quoting the "Battery University" findings....
http://www.expertreviews.co.uk/smar...your-mobile-if-you-want-to-boost-battery-life

I have been recharging my phones overnight without one single issue since my first cell twenty years ago to present.

Publicglutton said:
Technology expert "Eric Limer" explaining about overnight charging and quoting the "Battery University" findings....
http://www.expertreviews.co.uk/smar...your-mobile-if-you-want-to-boost-battery-life
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really i've heard this for the first time... besides every person has his own say about batteries... I say no matter how you charge the phone, todays batteries are made to last...well atleast a year till you are eligible for an upgrade

I have been charging my Z1 overnight for 7 months now, battery is excellent today, just like when I bought it
Sent from my Xperia Z1

I can quite believe that that expert knows what he is talking about, however, surely the person that has designed the battery charging circuit will be in the best position to understand the workings of the battery?
Why would they design something that is harmful to the battery in normal use?

stunno said:
I can quite believe that that expert knows what he is talking about, however, surely the person that has designed the battery charging circuit will be in the best position to understand the workings of the battery?
Why would they design something that is harmful to the battery in normal use?
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As an electrical engineer I'd like to point out that having the battery charged is the best you can do if you're using an lithium-ion battery. I read a lot of nonsense in the Internet regarding this matter. Only if you'd like to keep the battery unused for a long time it's good practice to keep it at ~50% (that's why the manufacturers do not charge the battery to 100% when it comes out of the factory).
But you don't have to believe me, it's your battery. Who cares?

rickaysen said:
I have been recharging my phones overnight without one single issue since my first cell twenty years ago to present.
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Yeah, but have you been charging the same phone overnight for 12 years?

BoneXDA said:
Yeah, but have you been charging the same phone overnight for 12 years?
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I keep a phone, on average, about six months.... Ha.

Jackos said:
As an electrical engineer I'd like to point out that having the battery charged is the best you can do if you're using an lithium-ion battery. I read a lot of nonsense in the Internet regarding this matter. Only if you'd like to keep the battery unused for a long time it's good practice to keep it at ~50% (that's why the manufacturers do not charge the battery to 100% when it comes out of the factory).
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I thought they didn't charge it all the way to save energy. I mean how much energy does it take to charge millions of devices.

Xernoxis said:
I thought they didn't charge it all the way to save energy. I mean how much energy does it take to charge millions of devices.
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That's a myth. The cost is mariginal if you take into account how much energy the whole manufacturing process does consume.

Charging - disconnect after full or leave connected?

I've got a question.... I leave my phone charging overnight on the pillow next to me and use the phone in the morning still plugged in to check emails, browse news etc and only remove the charger when I'm done and going to work...
Is this good for the phone and the battery or am I better off unplugging and then recharging when low again?
My method above keeps me charged up for the day's use as otherwise I would need to charge again at work..
What do you guys think?
Sent from my Nexus 6P using Tapatalk

As long as you are using the original Cable+Charger, you aren't harming the phone or battery at all. Technology on batteries and chargers are amazing now, especially with usb-c.

i leave my 6p the whole nights too nothing happens. Just use the original charger and cable and youll be fine.

Alekos said:
As long as you are using the original Cable+Charger, you aren't harming the phone or battery at all. Technology on batteries and chargers are amazing now, especially with usb-c.
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Not entirely true, see below.
mchu6am4 said:
I've got a question.... I leave my phone charging overnight on the pillow next to me and use the phone in the morning still plugged in to check emails, browse news etc and only remove the charger when I'm done and going to work...
Is this good for the phone and the battery or am I better off unplugging and then recharging when low again?
My method above keeps me charged up for the day's use as otherwise I would need to charge again at work..
What do you guys think?
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While you can't overcharge the battery, leaving it connected like that will degrade the long term life of the battery. A lithium battery shouldn't sit at peak voltage (100%) for extended periods of time. Here are a couple of really good articles:
http://batteryuniversity.com/learn/article/do_and_dont_battery_table
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

Heisenberg said:
Not entirely true, see below.
While you can't overcharge the battery, leaving it connected like that will degrade the long term life of the battery. A lithium battery shouldn't sit at peak voltage (100%) for extended periods of time. Here are a couple of really good articles:
http://batteryuniversity.com/learn/article/do_and_dont_battery_table
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
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This is correct in my experience, and is one of the reasons why the battery life on laptops tends to go right to crap . . . because people just let them sit on the charger constantly. IIRC, ideally you want to let it drain to around 20%, charge to full, let it drain, etc. Never let it completely die, and long-term storage should be at around 40% charge. No one does this perfectly because it would be such a hassle but in general this is what keeps lithium-ion batteries happy.
*sits back and waits for an electrical engineer to come humiliate this peon's approximation*

cabbieBot said:
This is correct in my experience, and is one of the reasons why the battery life on laptops tends to go right to crap . . . because people just let them sit on the charger constantly. IIRC, ideally you want to let it drain to around 20%, charge to full, let it drain, etc. Never let it completely die, and long-term storage should be at around 40% charge. No one does this perfectly because it would be such a hassle but in general this is what keeps lithium-ion batteries happy.
*sits back and waits for an electrical engineer to come humiliate this peon's approximation*
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You're pretty much right on the money there. I think three ideal range is between 40%-80% though. Small top up changes are the best way to charge lithium batteries.

20% is too low. Charge cycles slowly degrade the battery. 80% is a good number, but failing that 100% is a better option than continually cycling it. But this is a phone we're talking about not a laptop. I would imagine cycling is what's going to happen to it in most normal usage scenarios.
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Many thanks for all the responses much appreciated.. I'll have to work out a way of not having to charge overnight as this is the only time I leave it plugged in for extended periods!
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