Develop Bugs

[Q] Maximum Charging Rate, Gaming, and other Nerdy Stuff....

Ok, so I have an AT&T SIII running AOKP (was on CM 10, waiting for a bit better 10.1 stability in the Bluetooth department). I just found out how awesome the PS3's Dualshock 3 controller is for gaming on android. I'm considering purchasing a GameKlip for it.
-Anyway-
I know that the SIII's charging rate is capped somewhere between 750-1000 mA. I did some searching here on XDA, and it seems that buying a 2A charger wont charge the phone any faster because the charge rate is capped by the phone. I get that. My problem is that my phone will discharge 10% or more per hour on AC power (OC'd, brightness up, PS3 controller) while I'm gaming. I also understand that concept.
My question is: If I use a 2A charger, will the potential excess power prevent the phone from discharging while gaming, or will it be irrelevant? I assume the former.
While everyone is on the same topic, what is the highest charging rate that OEM's typically allow? Does say, HTC or Motorola tend to have higher rates? I'm not against switching to another phone (or carrier if I have to) if it means no discharging while gaming. The way it sits, if my battery is already low from using it during the day, and I come home from work to play some games, the battery will just die even though it's plugged in. Seems counter-intuitive to me. Other than this issue, I have my battery usage down to a SCIENCE, and I usually have idle drain less than 1%/hour while on WiFi with MINIMAL wakelocks. I think because of that, this drainage thing really drives me nuts!
What do you guys think?
Thanks!
- And yes, the poll question assumes you are on AC power.

rytymu said:
Ok, so I have an AT&T SIII running AOKP (was on CM 10, waiting for a bit better 10.1 stability in the Bluetooth department). I just found out how awesome the PS3's Dualshock 3 controller is for gaming on android. I'm considering purchasing a GameKlip for it.
-Anyway-
I know that the SIII's charging rate is capped somewhere between 750-1000 mA. I did some searching here on XDA, and it seems that buying a 2A charger wont charge the phone any faster because the charge rate is capped by the phone. I get that. My problem is that my phone will discharge 10% or more per hour (OC'd, brightness up, PS3 controller) while I'm gaming. I also understand that concept.
My question is: If I use a 2A charger, will the potential excess power prevent the phone from discharging while gaming, or will it be irrelevant? I assume the former.
While everyone is on the same topic, what is the highest charging rate that OEM's typically allow? Does say, HTC or Motorola tend to have higher rates? I'm not against switching to another phone (or carrier if I have to) if it means no discharging while gaming. The way it sits, if my battery is already low from using it during the day, and I come home from work to play some games, the battery will just die even though it's plugged in. Seems counter-intuitive to me. Other than this issue, I have my battery usage down to a SCIENCE, and I usually have idle drain less than 1%/hour while on WiFi with MINIMAL wakelocks. I think because of that, this drainage thing really drives me nuts!
What do you guys think?
Thanks!
- And yes, the poll question assumes you are on AC power.
Click to expand...
Click to collapse
Honestly, I've been using a 2A Charger since i purchased my phone three months ago. Im using the one from the nexus 7, but to answer your question.
I've noticed no difference in discharging using the 1A vs the 2A, the only factor that can that is your kernel and rom.
Since i've switch to a ktoonz kernel my battery life is improved by 75%. (using custom settings)
Also can i suggest possibly looking at a extended battery pack? I have both the gorilla gadgets and the hyperion. Both are amazing i was able to get 3 days on it, under heavy gaming 1.5 days.
Im using only a 3150maH battery right now, as i stopped gaming on my phone, bought a sick computer.

Funnily enough, I also use a DualShock 3 with my device on occasion, normally while on AC power. I've never noticed any power dips, but that may be because I'm not particularly pushing the device to its limits in the process.
Anyway, I think the meat of the matter is this: does the phone limit the amount of current entering via the micro-USB port (which is then split between battery charging and normal device usage), or does it limit the amount of current going into the battery? If it's the latter (which I'd consider more likely, given that the micro-USB port is expected to handle at least 1.8A), then you'll notice a benefit from using a more powerful charger under the circumstances. I don't actually know if that's the case, though.

Does your kernel support quick-charge? I don't know the science behind it, but it allows me to charge my phone from dead to 100% in less than half the time it normally takes.

exodus454 said:
Does your kernel support quick-charge? I don't know the science behind it, but it allows me to charge my phone from dead to 100% in less than half the time it normally takes.
Click to expand...
Click to collapse
Yes it does, but I thought fast charging only makes USB charging the same rate as AC charging (plus I heard it can permanently damage the USB interface)... Therefore my understanding is that the hardware charge cap still applies.

Smart Charge Note 2 ..Increase battery life

How to smart charge the Galaxy Note 2 battery
The way you charge your device is very important and it can affect your battery life a lot. Charging it wrong will make it drain quickly and the battery will also last less, requiring a replacement after 1-2 years of use.
To smart charge the Galaxy Note 2, you have to only plug it in when the battery is below the 10% level and never unplug it until it is 100% charged.
You should also know that when your battery reaches 10%, it will last longer than usual. To understand better, it will drain much slower from 10% to 0% than from 20% to 10%. So don’t panic if your battery level is low, because it can hold for a very long time, especially in standby mode.
Never use low quality chargers, because they can damage your battery hand even the device. Only use original Galaxy Note 2 chargers and try not to use the USB cable for charging your device. Always charge it in the wall socket, because the USB port power fluctuates and can damage the battery. Also it will charge much slower.
Battery maintenance
Usually the battery is the first smartphone component that dies, having a lower lifecycle. Though you can prevent this by taking care of it.
The best way to prevent it from getting damaged is to avoid pulling it from its socket. The battery has some golden pins that can scratch or get dusty, so if you pull it out and back in multiple times you can damage the pins.
In order to help the battery work the way it should, always make sure to clean the pins with a soft cloth whenever you pull it out. This way you will keep dust away from them.
When buying a new Galaxy Note 2 battery, make sure to get an original one, as other might have a lower battery life and can have a shorter lifecycle.
Increase Galaxy Note battery life by disabling features
The Samsung Galaxy Note 2 N7100 comes with tons as features, like we just said at the beginning. But nearly all of them are big battery eaters and you need to be careful when activating them.
The CPU and display drain a lot of battery, so make sure to setup the display to turn off faster. Also don’t keep it turned on when you don’t need it.
3G and 4G are the biggest battery drainers on a smartphone. You should only keep the 3G or 4G network activated when you use the internet actively. If you really need a permanent internet connection, then go for 2G, though this eats your battery too. The best way is to only connect to the internet when you need it.
Do not keep the WiFi,Bluetooth and GPS activated when you don’t use them. They can drain your battery very fast even in idle mode, so make sure to disable them when you don’t need them anymore.
Live wallpapers are also big battery drainers. They consume a lot of CPU and RAM resources and also use your display more intensively. So you should never choose a live wallpaper. The most battery-friendly wallpaper is a dark one, which doesn’t use any CPU resources and also doesn’t requires the display to be very bright.
You also have to take care what apps you install and always look at Settings > battery to see who drains the most battery. There are some apps than run continuously and prevent your device from getting into “Deep Sleep.” This is the standby mode that helps the device conserve very much energy. If an app prevents it from getting into this mode, you will notice a very low battery life.
Please let us know if you found other ways to increase the Galaxy Note 2 battery life. We are also curious for how long did you manage to get your device running between charges.

wow thanks mate quite a good one!
Thanks!

Also you should add that if you always need to be connected to internet then its better to keep connected through WiFi as it consumes less energy than using EDGE or 3G.
Sent from the rabbit hole.

Thanks it's useful

What?
No.
1. Deep charge cycles on a lithium battery accelerate the failure of the battery.
2. The device can determine the type of source it's plugged into, computer usb ports are safe.
3. Non branded chargers are safe if they are quality made. You just need to stick with quality and 2 amp/ short cables for decent charge times.
Sorry man, but those 3 things you listed are some pretty big misinformation that can easily be verified.
There's nothing "smart" about doing a deep discharge if your trying to preserve a 10 dollar battery.

After installing the new rom..I charge my battery full..then remove battery stats then drain full to zero for cycle.after complete ..I use smart charge method..that is .when my cell battery below to 10 something like 9 or 8 then I connect charger .and really it helps me alot
---------- Post added at 04:09 PM ---------- Previous post was at 04:07 PM ----------
Smart charge method is kinda usefull

purged363506 said:
What?
No.
1. Deep charge cycles on a lithium battery accelerate the failure of the battery.
2. The device can determine the type of source it's plugged into, computer usb ports are safe.
3. Non branded chargers are safe if they are quality made. You just need to stick with quality and 2 amp/ short cables for decent charge times.
Sorry man, but those 3 things you listed are some pretty big misinformation that can easily be verified.
There's nothing "smart" about doing a deep discharge if your trying to preserve a 10 dollar battery.
Click to expand...
Click to collapse
+1
Deep charge cycles are for avoid "memory effect" and It apply to old Ni-Cd / Ni-MH batteries. Don't apply for modern Li-Ion battery. There is much more chance that the deep drain affect negatively the battery of a GN2.
Li-Ion battery keep better performance if never going less than 50%. But the difference will be barely noticeable.
Personally, after several tests on my own, I don't bother anymore with that (I mean for the modern Li-Ion type). Sometime you have a great battery, sometime a crappy one from a bad batch. I have seen battery died fast after "by the book" charges cycles. And others seem to last forever, no matter how bad I maintained her (like my 2006's laptop).
Anyway, thanks for sharing, even if you are wrong on this one

I don't know if you're wrong or right because when you search the net about battery charging, you find everything and it's opposite. But I disagree on three points:
- The battery is beefy and you really have to work hard to make it last less than a day
- I bought this incredible phone because of it's features. If I have to cut half of them to avoid drain, why did I buy it?
- I dare say that most of the people who buy a Note 2 somewhere are a bit "Tech-Nuts". If you're not, I am, so I don't mind if my battery doesn't last two years because I'm not sure that I will still have this phone all that long.
And if I do and the battery is dead, I'll buy a new, genuine, Sammy one to continue.
What's it worth to live 100 years if you can't have a drink from time to time, maybe have a smoke or whatever? Plug your phone in or out and use your GNote 2 happy

Lol everything has its cost turn off everything to save battery what is fun in that I have a smartphone to use it and be happy with animations and display and games otherwise get a 3310 it is best
Sent from my GT-N7100 using xda app-developers app

Battery life first impressions

What are you guys seeing in your first few days with your M9?
As for me, I can't remember any device I have ever owned that has had worse battery life than this M9. 3 hours of "light-slightly moderate" use brings me down to 75%. Very disappointing thus far.

definitely a downgrade from the M8 battery life. However once we are able install custom rom's and kernels ect. I expect it will improve.

xgerryx said:
What are you guys seeing in your first few days with your M9?
As for me, I can't remember any device I have ever owned that has had worse battery life than this M9. 3 hours of "light-slightly moderate" use brings me down to 75%. Very disappointing thus far.
Click to expand...
Click to collapse
Interesting. Compared to my de-bloated, undervolted, S-Off and custom ROM'ed (Adrenaline) M8, I am seeing similar battery life comparatively on my M9. I did disable a lot (if not all) of the Bloat on the M9, so not sure if that helps the cause.

Horrible. I have to charge my phone about after 5-6 hours of use. I work in IT so I know Exchange is hammering the battery, but on my M8, I could last 8-9 hours before charge. This is includes browsing /r/sysadmin and other reddits.
For some reason too, it seems the QuickCharge 2.0 is slower on the M9. On my M8, it was stupid quick.

My experience has been mostly positive with the M9. First, I disabled all the VZW bloatware and then let the battery run very low and fully charged it. I repeated this 3 more times over the weekend. I took my battery off the charger at 6:00 AM and with medium use, I still have 84% left. The M8 was slightly better when running GPE so it's not apples to apples, yet.

xgerryx said:
What are you guys seeing in your first few days with your M9?
As for me, I can't remember any device I have ever owned that has had worse battery life than this M9. 3 hours of "light-slightly moderate" use brings me down to 75%. Very disappointing thus far.
Click to expand...
Click to collapse
My usage and battery life is comparable to yours. After 9 hours of only texts and phone calls I'm down to 50%.

I honestly think its too early to tell. I've disabled most, if not all, of the bloatware and I'm seeing "decent" but not "great" battery life. The phone still has the "new phone vibe" though, so I'm likely picking it up more frequently than I normally would. I'm also coming from the m7 though, not the m8, so my expectations are probably different. Custom ROMs and kernels are definitely going to change this though.
Cores can be completely disabled in custom kernels, which will likely provide a big boost with little performance loss (how often do you really think all four of those high-performance cores are being utilized?). Likewise, tweaking max clock speeds, undervolting, and tweaking/changing the governor will likely help things a lot too. We're just too used to our old ROM'd phones. It definitely seems like we'll be able to squeeze much more battery life out of the m9.

After reading some of the replies I think I'll go through and disable everything I can since I only did that to a moderate degree before. I am hoping that once we get some optimized kernels and different features it will help. Also, full root access to Greenify could help, but so far it's a horror show.

Coming from a galaxy s3 and sad to say iPhone 5 the battery has been superior to those two.
Sent from my HTC6535LVW using XDA Free mobile app

Chewcracka said:
Coming from a galaxy s3 and sad to say iPhone 5 the battery has been superior to those two.
Click to expand...
Click to collapse
My GSIII quadrupled what I'm getting on this M9. My galaxy s5 doubled it, easily. I'm just hoping it gets better.

Weird, I've been on it moderately all day and on 10% as of right now. Maybe I'm just used to horrible battery of the iphone
Sent from my HTC6535LVW using XDA Free mobile app

Feels about the same as my m8 maybe even a tad less honestly. Might just be from overuse running stock rom though.

Something with these new phones is killing the battery. I got the S6 and the battery is horrible as well, I can't even go a full day without recharging.
Every OS release Google talks about all these features that are supposed to improve battery life, but it only seems to make them worse.

Stock non rooted, disabled as much bloatware as I could. Haven't Set up any of my Tasker profiles (lack of root makes them useless for now) and I got a full 1day 5hrs before dropping below 15 percent. Battery life seems pretty much par for the course on a flagship phone. I also had an s6 edge for a couple of days but picking it up off the counter was a weird experience for me so I switched back to HTC. Aside from the heating problem which I believe will be resolved either by the community or HTC I love the phone.

geoff5093 said:
Every OS release Google talks about all these features that are supposed to improve battery life, but it only seems to make them worse.
Click to expand...
Click to collapse
The fact of the matter is yes, Google is making improvements in regards to battery life... but these improvements are offset and negated by consumer demand for faster, more powerful phones. The Snapdragon 810 is a beast of a mobile processor; its got two quad-core CPUs in it, so it definitely has to use some power to operate.
I can't wait to get a custom ROM my M9 and (hopefully) disable two of the A57 cores and see what happens (and see how performance is affected, if any).

I must say that I like it so much better than the SGS3! I can go a day and a half with out charging it... S3 was every day!
Even using GPS is less consuming... . Well worth the wait for HTC to get it right!
Other reasons that I like it better than the S3:
1. You can actually keep a grip on the M9!
2. The M9 is not as fragile!
3. Love the feel!
4. The audio is excellent (in my opinion better than any other available)!
5. The 3.5mm plug has a firm fit!
6. The charge port and audio port are both on the bottom!
I will stop there - I love this phone! (M9)

I'm literally sitting here with my phone plugged in, only with WiFi on and chrome browser, bloat disabled, screen on low, force closed most processes (ie play store, etc) and watching my battery % get lower... Plugged in!

WillyRy said:
I'm literally sitting here with my phone plugged in, only with WiFi on and chrome browser, bloat disabled, screen on low, force closed most processes (ie play store, etc) and watching my battery % get lower... Plugged in!
Click to expand...
Click to collapse
Plugged into what, though? The 500mA maximum of the USB2 ports on your desktop/laptop is not enough to charge this phone with the screen on. You can slow-charge it at 500mA with the screen off, but it still takes some time. USB3 ports technically have a max draw of 900mA, which should be enough to slowly charge with the screen on, but in practice some laptops/motherboards won't allow any more than 500mA on their USB3 ports either. Use a wall charger for best results -- check the output rating though.
The included wall charger with the m9 is rated for [email protected] (1500mA). I'm not a fan of charging my devices extremely quickly, so I'll probably stick with the 1A (1000mA) charger that came with my m7.

Rain724 said:
Plugged into what, though? The 500mA maximum of the USB2 ports on your desktop/laptop is not enough to charge this phone with the screen on. You can slow-charge it at 500mA with the screen off, but it still takes some time. USB3 ports technically have a max draw of 900mA, which should be enough to slowly charge with the screen on, but in practice some laptops/motherboards won't allow any more than 500mA on their USB3 ports either. Use a wall charger for best results -- check the output rating though.
The included wall charger with the m9 is rated for [email protected] (1500mA). I'm not a fan of charging my devices extremely quickly, so I'll probably stick with the 1A (1000mA) charger that came with my m7.
Click to expand...
Click to collapse
Using included wall charger and cable.
Plugged it in this afternoon, turned off screen and walked away... in 2 hours it gained 2% from 47 to 49
Edit:
Very well could be faulty device. Using different cables/outlets in different rooms yields same results. M7 on same setup charges steadily during heavy use. Using m7 outlet now. Dropped from 17% to 14% while editing this post. Better screen off now so it doesn't die on me...

I usually wake up by watching a few youtube videos. This morning I woke up, grabbed my phone off the charger and watched a 16 minute video at 1080p with adaptive brightness (which was low). In the 16 minutes my battery went from 100% to 83%. That is atrocious. Hopefully new ROM's and kernels will be able to remedy this.
Also, the other day I was using a quick charger I got at Verizon with my phone and got the message I was using the phone too much to charge. I could understand if it was plugged into a USB port on my computer. How did I get this message while using a quick charger?

Any issue with your new Note 7? Read this...

Some complaints about the replaced Note 7 which have safe batteries, in South Korea.
http://www.androidheadlines.com/201...ery-issues-noted-by-galaxy-note-7-owners.html
What's your take on this? Anyone experiencing the same issues?
Updated:
Started a Poll on the subject. Please participate!
http://forum.xda-developers.com/poll.php?do=showresults&pollid=23806
Tnx!

Battery-gate has everyone paranoid.

This sounds like BS. When Samsung investigated 90+ cases of exploding batteries, it found that 26 reported cases were fraudulent scams - this was in the news today.
It sounds like the same ****.

andyahs said:
Battery-gate has everyone paranoid.
Click to expand...
Click to collapse
^^^^^
This.
I would believe the below from the article before I'd believe Samsung's stupid enough to make the same or similar mistake twice. I was worried about QC on the replacements considering how fast they're racing down the production line. Mine's perfect BTW. Any articles about Samsung because of what's happened is guaranteed click-bait. A Note 2 overheating on a plane made front page news with whatever (still to be determined) happened to it being tied back to the Note7 issue.
"The issues being reported in South Korea are related to minor errors with the mass production of the new units."​

I m not seeing anything near this. in fact my SD820 device runs better than the original did

cordell12 said:
I m not seeing anything near this. in fact my SD820 device runs better than the original did
Click to expand...
Click to collapse
Mine seems too also but I thought it was all in my head. It seems smoother and snappier for want of better words. My old phone would occasionally get choppy and stutter as if it was struggling with something in the background. The new one doesn't. It's on AT&T and the new phone's shipping s/w was the same as the old phone's updated s/w. Curious.

My s7 edge and note 7 (both exploding and non-exploding versions) have always had times where they charge slower than they discharge. (Waze + Pandora when it is super sunny, so 100% brightness. Even on QC2.0.)
The new note7 (and/or new firmware) pops up a warning to say as much. The S7E had an overheat warning that came up occasionally in similar conditions (even air-conditioned, DC summer is warm..)
I think the only difference is the notification that its happening, which is nicer than discovering after a drive that you have been losing power the whole time.

I'm experiencing the very slow charging issue. In fact when I was watching a movie while fast charging it was losing charge!?
Sent from my SM-N930V using Tapatalk

I have experimented the same thing, actually ending with less batt while using and charging with other devices, so, this happening with the note 7 indicates nothing wrong with the batt

Customers in South Korea who received a replacement device have reportedly complained the phone's battery is overheating and drains too quickly after use, according to a report by YTN, a TV network in the country.

nomailx said:
Some complaints about the replaced Note 7 which have safe batteries, in South Korea.
http://www.androidheadlines.com/201...ery-issues-noted-by-galaxy-note-7-owners.html
What's your take on this? Anyone experiencing the same issues?
Click to expand...
Click to collapse
Fast charging does not seem to want to work on my new one, with stock charger brick and cable. I am hoping I don't have to go BACK to TMo and get another new phone.

my replacement seems identical to my original, same charge speed, same discharge speed.
as for the people saying about watching movies and such and the battery ending up lower, that is normal, if you are running the screen and charging not only does the battery get warm, so does the CPU so the phone will start to throttle the charging. I've had phones in the past that refused to charge once the CPU got above a certain temperature. this is just people being paranoid or looking for a way to get money as mentioned above with the fake tales of exploding batteries.

Disconn3ct said:
My s7 edge and note 7 have always had times where they charge slower than they discharge.
Click to expand...
Click to collapse
Odd. I use my Note7 (pre and post replacement) with Android Auto via USB. Android Auto really puts a load on the phone. Even off the wimpy output from my car's USB port the phone never loses charge and frequently gains it. My previous Note5 was the opposite. It would stay even most of the time but would lose charge on occasion. The only difference between the two scenarios is I got a Orange-E 12" Type C USB cable to use with my Note7. So my experience is different than yours.

I suspect the screen is the big drain. 100% brightness is vicious. Isn't the screen off for android auto?
Things it's usually doing when it drains (starting from 70% or so) :
Overheating (direct sun, no ac pointed at dash or top/doors off)
BT music streaming + wear
GPS
100% brightness
QC2 (aukey car charger)
Even without overheating that combo usually only gains me about 5% over 30 minutes.
Unrelated, but without getting too far off topic is AA worth the jump? (~900USD if I want my steering wheel controls and stuff)
Sent from my SM-N930T using Tapatalk

Disconn3ct said:
I suspect the screen is the big drain. 100% brightness is vicious. Isn't the screen off for android auto?
Click to expand...
Click to collapse
Yep. When in use and the display is on its black with the Android Auto logo. But the phone's still using all its radios and if navigating pushing data to an 8" display so the phone's definitely under load. I have a Samsung Fast Charge car adapter but the problem with Android Auto is it doesn't let you connect by BT so the car's USB power output is all you get. But as a comparison under the exact same conditions the Note7 definitely either drains less or gets more power than my previous Note5 and both phones are/were configured identically.

BarryH_GEG said:
Yep. When in use and the display is on its black with the Android Auto logo. But the phone's still using all its radios and if navigating pushing data to an 8" display so the phone's definitely under load. I have a Samsung Fast Charge car adapter but the problem with Android Auto is it doesn't let you connect by BT so the car's USB power output is all you get. But as a comparison under the exact same conditions the Note7 definitely either drains less or gets more power than my previous Note5 and both phones are/were configured identically.
Click to expand...
Click to collapse
A black screen with amoled means the only pixels lighting up are the ones in use. The screen itself is a massive drain so the more pixels are lit up, the more the juice is drained from the battery. That's why AOD doesn't kill the battery fast.
Sent from my SM-G935T using Tapatalk

Ive used a USB multimeter on both my old and new note7.
No matter what, old or new note7, the charging rate gets cut exactly in half when charging with the screen on. This happens when using a quickcharger or a normal 2.4a 5v charger.
So if you want full speed charging the screen needs to be OFF.
Sent from my SM-N930T using Tapatalk

On my replacement Note 7 I noticed that if you are doing allot with the phone, it still gets hot, the battery does take a little longer to charge with both the Samsung charger that came with the phone and an Anker IQ 2.0 / 3.0 charger. The phone does seem a little snappier/faster though.
I just want a removable battery to end all this bull * and I will pick the battery I want to power my phone.

Snowleopard1900 said:
On my replacement Note 7 I noticed that if you are doing allot with the phone, it still gets hot, the battery does take a little longer to charge with both the Samsung charger that came with the phone and an Anker IQ 2.0 / 3.0 charger. The phone does seem a little snappier/faster though.
I just want a removable battery to end all this bull * and I will pick the battery I want to power my phone.
Click to expand...
Click to collapse
The biggest advantage for the integrated battery is that the unit is completely sealed from water.
Sent from my SM-G935T using Tapatalk

pyraxiate said:
The biggest advantage for the integrated battery is that the unit is completely sealed from water.
Sent from my SM-G935T using Tapatalk
Click to expand...
Click to collapse
I beg to differ, because they have that wireless backpac battery that is completely sealed from water for the Note 7. The purpose of the permanently installed battery is for the NSA to track people since the battery cannot be removed from the phone.

Did the note7 battery fiasco made you more wary of Li powered devices?

Speaking for myself I've always been kinda aware of the failure potential of these batteries. For instance, I tend to not leave the phone unattended during charging and also use such tasker profiles as to shutdown when charge below 5% or alert when charging above 95%. These latter measures and others are mostly to help with battery longevity as well as or rather my ocdness on this subject.
My only gripe is that I never succeeded in instilling the same 'respect' for battery in my wife.. Pre or even post-note she always forgets her tablet or her phone plugged in the charger, even when no one's at home, sometimes for days!
But this recent note7 'mishap' let me tell you, made me even more wary of the destructive potential of the batteries in our phones. Especially since most of my latest snapdragon devices (m7, z5) get very warm while performing various mundane tasks (syncing via wifi/lte, camera, games rendering etc), much warmer then the defunct note.
Did this event affect the way you use your mobile devices and how? Is there any particular strategy you use with this respect? Or do you rather think that the failure rate being so low it's rather silly to worry about it?

millicent said:
Did this event affect the way you use your mobile devices and how?
Click to expand...
Click to collapse
Nope, it hasn't made me change anything so far. I don't believe the issue with the Note 7 is directly a result of the battery since Samsung had two manufacturers make batteries and in both instances Note 7 devices with either battery still failed.
Is there any particular strategy you use with this respect?
Click to expand...
Click to collapse
As long as the device is working properly meaning there's no defect that I am aware of (as in no global recall in effect, etc) in any part of the power or charging systems then I tend to leave my devices plugged in until they charge to 100% status then I'll usually leave them connected to the charger for up to 30 minutes past that point then disconnect. With the GS7A I have, I only charge it once every 2.5-3 days typically and that's from 5-10% back to 100% using a Samsung 2A charger - I don't use the factory fast charger and I don't use fast charging because I believe that ends up shortening the potential lifespan of the battery cell itself.
I did not say that's a fact for everyone to live by or accept as the gospel truth, I said for myself personally I believe that fast charging shortens the lifespan of the battery cell itself.
For the record I've owned several hundred devices over the decades, some with Ni-Cad batteries, most with Li-Ion over the past decade, and a few with Li-Po technolology and I only had one instance of a battery having a problem (not a failure). It was a knockoff cheap Chinese clone battery for my Galaxy S4 Active several years ago and it bloated up one afternoon - thankfully that GS4A had a removable back cover and I caught the swelling up very fast because as soon as it started to bloat up the back cover literally popped off about 4 inches above my desk and landed on my keyboard. I of course took the battery out immediately and put it in a small ceramic box my Wife had laying around, nothing else happened and I ended up taking it to a local battery store here in Las Vegas and turning it in for safe destruction.
See, there really is a good reason to have removable batteries and removable back covers on some devices.
Or do you rather think that the failure rate being so low it's rather silly to worry about it?
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As stated above, I don't believe the actual point of failure with the Note 7 is the battery directly - the burning up and explosions of the battery cells is the effect, not the cause. Something is happening to cause the battery (now two different ones, which most of us know about now) to fail.
Now it remains to be seen if the cause can be determined for the failures.

There is one other, perhaps more placebo induced effect, routine I'd do every once in a while, related to battery calibration. So I'd let the battery go as low as can possibly go, or let it turn off by itself, charge at cold until 100% then power on while still plugged in and finally unplug when os fully booted up.
Is this still a proper thing to do or it rather stresses the battery uselessly?

After I got this GS7A I did allow it to run down entirely till it shut off once, just one time and I actually got concerned because when I then plugged in the charger all I got on the display was a battery outline (the white battery icon that's hollowed out) and I was expecting the lightning-bolt symbol to appear there to indicate yes it's charging, after which it should change into the progress meter along the inside bottom of the icon.
That didn't happen.
So I sat there waiting. 5 minutes went by, then about 10 minutes, and I started to worry that perhaps I'd just killed it completely. But about 11 minutes after I plugged in the charger the lightning bolt appeared for about 10 seconds, flashing a few times, then I saw a thin green line across the bottom. Success!
But it did pretty much scare me for a few minutes at the thought of potentially ruining it by doing that so, I don't intend to ever let that happen. Your practice you mentioned of using Tasker to shut down at 5% (not a complete discharge like I did that one time) and to stop charging at 95% is a good idea and something I'm going to have to do more research into.
I've spent a lot of time over the years reading research papers at Battery University and I know that full discharge of a Li-Ion cell is a bad idea but I still ended up doing it. I was actually trying to capture a screenshot at 1% then I planned to initiate a shutdown immediately after that but taking the screenshot just killed it, oops.
But the idea of shutdown at maybe 4% and stopping the charging at 95% (or at least providing me with some kind of alert I can hear clearly and charge or disconnect as required) is a very good idea so thanks for mentioning that.
My research and understanding of the available info at Battery University is that it's better to do your best to not let a Li-Ion cell go below at least 30-40% charged most of the time with short periods of charging to bring it back up to the 90-95% point and, and occasionally - like maybe once a month - allow it to go deeper into the discharge state but not fully (I learned my lesson on that one) and then charge it back to full. The question is what that "full" point might be because some papers say charging Li-Ion to full capacity ruins them as time passes and other papers say it's just fine to do so occasionally - the problem is there's no absolute consensus on either method.
The deep discharge method once a month might work better as a method of calibrating (?!?!) but I honestly don't know for sure, not sure anyone does. But I think I'm going to start using Tasker for that 4-5% shutdown and 95% top off point on my Active, it sure can't actually hurt the device and could give me longer battery lifespan or should I say longevity as you did - that word actually seems more appropriate because most folks hear "battery lifespan" and they only understand that to mean how long it runs on a single charge which isn't the meaning I'm trying to get across.

all i can say after this incident , my knowledge of ion battery deepen and yes in case of emergency , you cant remove if its seal tight shut inside , something to consider , Samsung .

for me, no it's not made me more wary, I always am re Li cells as there have been many failures not only in phones. I have laptops, eCigs, torches etc that all use Li cells. That said, I use the devices as "normal" but stay aware of how warm they've gotten in charge/use, try to not drop them or leave them on/in a source of external heating etc. Anything containing combustible material can go bang after all. A disposable lighter left on an iron fireplace with the fire burning goes bang very well indeed, as would one of these cells in the same circumstances
I tend to top off the charge regularly since I have Qi chargers on my desk and in the car holder but never charge overnight while I sleep. I'd guess my operating capacity ranges from 100% down to maybe 30% and mainly hanging in the 60-80% range as the device tops up. SatNav tends to mean in-car the device only gathers a minor gain even over a couple hours use as the draw from the screen/cpu offsets the input from the Qi charger plate. The phone of course gets warm in this mode, hence it is set halfway down on the centre dash rather than up high and in the sun. And no I'm not always looking at it - voice guidance is very handy
On charge levels, I've also read a number of articles on various cell types. Typically the recommendations are that Li cells effectively eat themselves if kept at 100%, degrading and losing capacity over time. Hence its best if storing them to have them at 50-70% and not fully charged. Of course whether the phone actually takes the cell to its 100% limit or its charge management calls 100% at the 95% of cell capacity I don't know. When fully discharge has happened then yes it does seem to take longer for the charge icon to start ticking along, seen the same on the old iPad-1 I have, probably because the initial part has to be a very slow energising charge to get the cell to a point when it can accept more current and maybe the icon only shows rates above a certain current.
re the swelling cell. I've not used non-Samsung cells in my note 1/3 or S2 but have seen Sammy's cells also swell when they get to end of life. Both notes had this happen around the 18-26 month mark but not to the extent of the back popping off/open. Dramatic shortening of on-battery runtime yes, but from the outside no real visible indications that anything was up.

NO, LiPo, and Li ion batts are everywhere why worry about, I have had dozens of LiPo an LiOn powered devices

What about Li-On batteries though?

Hasn't changed for me either. But it has made me more wary of Samsung devices. There no way I'm getting the s8 (or note 8) no matter how great the features are. They can't even figure out what's wrong with the note 7.. Who's to say their upcoming phones won't have the same problem.

The only thing that worries me is that it may become even harder to get batteries and such shipped to Hawaii, it's horrible.
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