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Battery indicator doesn't drop below 23% and then dies.

I am stock, rooted and unlocked just before the last minor OTA. My battery has been dying on me a lot recently because it keeps showing that I'm at around 23% when it's low. So I've never received the low battery warning, and after a while it just shuts off and doesn't turn back on... so it obviously drained.
I'm gonna try clearing battery stats in CWM after a full nights charge, but was wondering if anybody has an explanation for this? Or possibly any other solutions other than clearing battery stats.
Again, I'm running Stock ROM, rooted, and unlocked. The last OTA has not been installed and fails when it tries. The only other thing I have flashed is Google Now.
Please help, this glitch is seriously killing my battery because it keeps draining down to 0 before i even know it.

you dont have to wait for a full charge to wipe battery stats...sounds like the battery is going bad imo.

wiping stats didnt do anything... I'm back at being stuck at 23% as i type.
And a battery going bad after 3 months?? My Incredible's battery is still working just fine after 2+ years now.... Is it really possible for a battery to crap out this quick?

KrisPeezy said:
wiping stats didnt do anything... I'm back at being stuck at 23% as i type.
And a battery going bad after 3 months?? My Incredible's battery is still working just fine after 2+ years now.... Is it really possible for a battery to crap out this quick?
Click to expand...
Click to collapse
Batteries usually last around 1-2 years then they start to degrade.
There will be times where the battery you get will be defective. Just go to the Verizon store and show them. They will be happy to replace it.

ya i would say the battery is going bad too
Sent from my SCH-I535 using xda app-developers app

Ok, I'll try to go into the verizon store some time next week.
I'm gonna take some screen caps of the battery drain to show them. And maybe I'll bring it in when it's at that 23% point...
I Should probably unroot and lock before i bring it in right?

KrisPeezy said:
Ok, I'll try to go into the verizon store some time next week.
I'm gonna take some screen caps of the battery drain to show them. And maybe I'll bring it in when it's at that 23% point...
I Should probably unroot and lock before i bring it in right?
Click to expand...
Click to collapse
Try wiping the phone and getting that update or wipe and Odin the vrlhe update on. See if this does any thing for you you might end needing a new phone. But it could also just be the battery.

Wow! Same here dude. I've been off TW for a month, with it dying at exactly 23%. Yesterday, it did the same thing on JB TW. 23%.
Michael Jordan pissed at us or something? Using his magical powers to turn our phones off?
Sent from my SCH-I535 using Tapatalk 2

I'm running into the exact same issue with my one week old CLN phone and brand new battery. Battery meter will not drop below 23%. If I shut the phone down, remove the battery, and power it back on, it will start resuming normally but the problem happens again once I charge the phone back up.
Has anyone found a solution?
Edit: BTW, I am rooted/unlocked running Beans11 and ktoonz kernel.

Ive recently run into this issue as well, anyone find a solution?

Happened to me once. i switched rom/kernel
iSheep... iSheep... Meowww that's Apple VZW GSIII

KrisPeezy said:
I am stock, rooted and unlocked just before the last minor OTA. My battery has been dying on me a lot recently because it keeps showing that I'm at around 23% when it's low. So I've never received the low battery warning, and after a while it just shuts off and doesn't turn back on... so it obviously drained.
I'm gonna try clearing battery stats in CWM after a full nights charge, but was wondering if anybody has an explanation for this? Or possibly any other solutions other than clearing battery stats.
Again, I'm running Stock ROM, rooted, and unlocked. The last OTA has not been installed and fails when it tries. The only other thing I have flashed is Google Now.
Please help, this glitch is seriously killing my battery because it keeps draining down to 0 before i even know it.
Click to expand...
Click to collapse
This same excate thing happened to me. The cause, I used a hacked battery app. I tried everything to fix it, switched roms, kernels, wiped stats as many different ways as I could, but everytime I would be stuck at 23% till the phone died.
Restored all my apps without the battery montior app, let the phone do its thing, and its been fine.
Remove the app, wipe stats, reboot. Should work.
And I bet your using Battery monitor widget from 3c, aren't you?
Sent from my PACmaned SCH-I535

Battery life is plunging from 80% to zero

Hey all,
About three weeks ago I had a strange problem. I noticed that in two straight charge cycles, my battery life plummeted from about 80% to zero in just a few hours. I'm not sure what the issue was. I hadn't changed settings, installed new apps, etc. My first screenshot shows an example of what happened. 4G and data were off during the entire time.
Since then, things have been okay. I typically get 3 days standby with 4G on and light use, or 4 days with 4G off. That's mostly standby with maybe an hour or so of talking and minimal use.
After those strange battery plummets, I installed and used GSam Battery Monitor to get more details about what processes were running on my phone in case I noticed the sharp drop happening again. Everything had been fine for over two weeks, with me getting expected battery life before this issue and not experiencing any odd, sudden drops (maybe 5 or 6 charge cycles). This lends me to conclude that my battery's charge capacity is okay, and calibration also shouldn't be an issue.
However, the problem arose once again a couple days ago. Went from 75% to nothing in just a few hours. 4G was off during that time. The third and fourth screenshots show the same issue. Charged my phone, and this morning the same thing happened yet again. At about 90% the plummet began, and within an hour or so I was at 75%. At this point I took screenshots of Android's battery status, and I also did the same for GSam to show what apps and processes were running. The phone's temperature seemed fine.
The GSam screenshots taken when the phone was at 75% and dropping are in the next post, since I'm limited to four images in this one. I have no idea what's causing this massive, sudden battery drain. The only thing I can think of is that I've done Verizon's OTA updates, but otherwise pretty much all my settings, apps, and usage are the same. Plus, for two weeks I had normal battery behavior, so I'm completely baffled.
I also know that cell standby is incorrectly reported in the GS3 battery screen, and I'm getting a good signal where I live so that shouldn't be a problem. I forgot to get screen time for the first case (first two images), but it shouldn't be more than 10-15 min there since most of the charge was lost due to the freak plummet.
If anyone may have an idea of what's going on, or if there are some tools/tests I may use to figure this out, I'd really appreciate it. I turned off my phone after taking the screenshots at 75%, so if I need to turn it on and check something for you I can probably do that. Thanks a lot.

FYI, here are GSam screenshots from when the battery was in the process of plummeting this morning.

i think you built in battery status settings are off. i barely get 12 hrs with medium use, so what i think it happens is that the battery monitor is not showing the proper discharge, and then all of a sudden it catches up to the discharge rate.
are you on stock rom, rooted, unlocked bootloader?

wizzardeel said:
i think you built in battery status settings are off. i barely get 12 hrs with medium use, so what i think it happens is that the battery monitor is not showing the proper discharge, and then all of a sudden it catches up to the discharge rate.
are you on stock rom, rooted, unlocked bootloader?
Click to expand...
Click to collapse
I am stock rom. No rooting, no unlocking.
These plunges are definitely an anomaly. Truly, with me barely using the phone and turning off mobile data, I get a few days of standby. I've had the phone since July, and the aberration in battery behavior has been the steep plunges I've shown.
In between these instance of steep plunges, I've had normal use. I really don't think it's an issue of calibration. Please believe me when I say that my normal, light use during the past four months gets me anywhere from 3-5 days with me barely using the phone. When I say barely using it, I mean not even touching it for an entire day if nobody calls me. But now, a sudden plunge in battery life is happening at 80% with no apparent reason.
I think it might be some kind of software or hardware glitch, but it's impossible for this to be normal given the battery life I typically get. Just looking at that steep drop, it's crazy and just happens out of nowhere.
But please trust me when I say that these sudden plunges that have happened a total of 4 or 5 times, causing the battery to drain completely in a few hours when I'm not touching it, are quite a drastic aberration from the normal standby life I get. Something is definitely wrong here, I just don't know what.
And one more thing to add is that after this sudden plunge and rapid drain, charging the battery still takes the normal time it does when I'm not having this issue. That is, about 2.5-3 hours to reach a full charge (and I charge with the phone 'off'). The battery is being completely drained. But this happened twice, then didn't happen for maybe 5-6 charge cycles, then happened again twice.
Before the first instance, I remember an OTA Verizon update around 10/5. My phone was okay for 2-3 charge cycles after that. Then two rapid drains. Then 5-6 normal cycles. Then two more rapid drains. There was a second Verizon OTA update somewhere in there but I can't remember.

and you said it only started once you did the OTA update from verizon right? well you could either try to go back to the stock verizon rom pre-update and see what happens there, or contact verizon and let them know what happens with the new OTA update. they could replace your phone, or it could be a bug of the new OTA update. i am on stock rom and rooted and deleted the apk that kept on trying to push the update. just unlocked by bootloader and so far my battery life has improved compared to previous locked bootloader.

i would take it to a verizon store and show them. They might give you a new battery.

I may have to do that. I'm just not really sure what the issue is.
- The battery can still hold a full charge.
- Based on running services, nothing is causing high CPU usage.
- The sudden plummet almost seems kind of random.
- Since there have been normal charge cycles, it's not an issue of calibration.
I'm not sure if this is a hardware issue or software issue. I'm trying to wrap my brain around what could cause the battery to drain so suddenly and sharply. Could the charge somehow be "leaking"? But in that case I'd expect it to happen all the time. If there's an underlying software issue, is there any other tool I might be able to use to figure it out?

Does the phone get hot?
Sent from my SCH-I535 using xda app-developers app

jhoutz said:
Does the phone get hot?
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
Not from what I can tell. Note that the first couple plummet drains were overnight.
But today I caught it before noon. The phone wasn't hot, and the GSam screenshots show no CPU stress.

Maybe you can do a factory reset and se if that helps. They will probably do one if you bring it to verizon anyways. It sure sound like a hardware problem. You'd think if the processors are working that hard that the phone would get hot, I know mine gets pretty hot sometimes under heavy use.
Sent from my SCH-I535 using xda app-developers app

Thing is, all indications show the CPU isn't working hard, and the phone wasn't hot.
I'm stumped.
This is a noobish question, but I presume the only way to go back to stock is to factory reset? One thing I might wait for is the Jelly Bean update, presuming this random drain holds off until then.
But yea, I dread going into VZW because they're just going to try to pass this off onto me doing something wrong, or me not knowing how to calibrate the battery, etc. The information I've provided in my OP and in the screenshots would fly over their heads. Maybe I can just do an online chat and tell VZ to send me another battery?
The only other thing I can think of is that sometime before these plummets happened, I went online to MyVerizon and turned off the Backup Assistant for movies/music/etc. so I wouldn't get all those notifications. I don't think this could be the issue, since the plummet happens when data is off. Plus, GSam would show that Backup Assistant is hogging the CPU or forcing a signal.
I doubt swapping batteries will fix it, though. I'm thinking my internal hardware might have a serious problem.

inm8num2 said:
Thing is, all indications show the CPU isn't working hard, and the phone wasn't hot.
I'm stumped.
This is a noobish question, but I presume the only way to go back to stock is to factory reset? One thing I might wait for is the Jelly Bean update, presuming this random drain holds off until then.
But yea, I dread going into VZW because they're just going to try to pass this off onto me doing something wrong, or me not knowing how to calibrate the battery, etc. The information I've provided in my OP and in the screenshots would fly over their heads. Maybe I can just do an online chat and tell VZ to send me another battery?
The only other thing I can think of is that sometime before these plummets happened, I went online to MyVerizon and turned off the Backup Assistant for movies/music/etc. so I wouldn't get all those notifications. I don't think this could be the issue, since the plummet happens when data is off. Plus, GSam would show that Backup Assistant is hogging the CPU or forcing a signal.
I doubt swapping batteries will fix it, though. I'm thinking my internal hardware might have a serious problem.
Click to expand...
Click to collapse
Before the update, was everything normal?
Is the update with the HE base/baseband?
It probably isn't a hardware problem, just a bad base.
I've noticed after updating my GS3 to the HE base and the battery life was just horrid.
It's said that the new HE baseband uses up more battery also

emckai said:
Before the update, was everything normal?
Is the update with the HE base/baseband?
It probably isn't a hardware problem, just a bad base.
I've noticed after updating my GS3 to the HE base and the battery life was just horrid.
It's said that the new HE baseband uses up more battery also
Click to expand...
Click to collapse
Sorry, I don't know what you mean by "HE" base/baseband.
But yea, this problem didn't come up until after an OTA update.

Check your baseband version under Settings -> About and paste it here
Sent from my rooted Verizon Samsung Galaxy SIII

It's I535VRLHE
Kernel version: 3.0.8-1092717
Build number IMM76D.I535VRALHE
I turned on the phone and within 10 min or so the battery life went down by 2-3% without me doing anything. As a test I've put it into Airplane mode, and it's decreased by about 2% in 45 min.
Now I'm wondering if I have a faulty antenna or something.

Yup ive had it drain 90% overnight many times for no reason. Called verizon and my new battery should be here today.

1+ day on battery and only 11 minutes of screen time?!?

inm8num2 said:
It's I535VRLHE
Kernel version: 3.0.8-1092717
Build number IMM76D.I535VRALHE
I turned on the phone and within 10 min or so the battery life went down by 2-3% without me doing anything. As a test I've put it into Airplane mode, and it's decreased by about 2% in 45 min.
Now I'm wondering if I have a faulty antenna or something.
Click to expand...
Click to collapse
HE is the baseband version and the build number. For example I have: Android Version: 4.0.4
Baseband: I535VRLG7
Build: IM76D.I535VRALG7
which is the version before the update.
Like everybody else said, call Verizon or go to a store and let them know about the battery issues and they should send you a new one. Or even call Samsung and tell them you bought an S3 through Verizon and you are having battery hardware issues.

sonser said:
1+ day on battery and only 11 minutes of screen time?!?
Click to expand...
Click to collapse
Well, no calls made or received during that time. No data being used.
So, wasn't really using the phone during that time...

Updated and now battery issues

my phone was stock and i did the ota update. it was slightly laggy and buggy so i did a factory reset and it waa running smoother. the problem was the battery drained 1% every few minutes. i tried powering off and taking out battery but it didnt help. i tried charging with phone off and that worked but it used 2% just booting up android and losee 1% every few minutes. tried multiple reboots and nothing works.

i am with you. I can see a measurable difference in the battery life after the update.

steve austin said:
i am with you. I can see a measurable difference in the battery life after the update.
Click to expand...
Click to collapse
It's pretty common for an Android phones battery to suck for a few days after an update or fresh ROM load. It's running all sorts of services in the background writing cache files, battery stat info, app data, syncing carrier data etc. It'd be down to %60 after just two hours. Pretty much every Android phone I've had I've seen this and I use to get alarmed by it. But after the 3rd or 4th day, it all seems to settle down and last as long as we'd expect. If after 5-7 days and it still sucks, then you should worry. My Note 1, LG G Pro, and now Note Edge have all done this. My Edge did this after updating to Lollipop, but now that it's all settled down, I'm usually at about %70-80 after 12hrs off the charger with light usage. It might be %40-60 after moderate use. I've had it off the charger for 24hrs (but not using the phone at all) and it was at %70.

I fixed it by charging to 15% while phone was off and doing another factory reset. Since upgrading, some apps take a long time to open. Almost as if they're close to force closing.
The battery will not charge with any charger that isn't the stock fast charging one that came with the phone. If I plug in my other charger I've used for months while at work, battery dies even when plugged in.
I kind of regret doing the ota.

christran12 said:
It's pretty common for an Android phones battery to suck for a few days after an update or fresh ROM load. It's running all sorts of services in the background writing cache files, battery stat info, app data, syncing carrier data etc. It'd be down to %60 after just two hours. Pretty much every Android phone I've had I've seen this and I use to get alarmed by it. But after the 3rd or 4th day, it all seems to settle down and last as long as we'd expect. If after 5-7 days and it still sucks, then you should worry. My Note 1, LG G Pro, and now Note Edge have all done this. My Edge did this after updating to Lollipop, but now that it's all settled down, I'm usually at about %70-80 after 12hrs off the charger with light usage. It might be %40-60 after moderate use. I've had it off the charger for 24hrs (but not using the phone at all) and it was at %70.
Click to expand...
Click to collapse
I got mine, updated, factory reset, and set it all up again on Monday 5/18. It's been 5 days. Should I be worried? It's still draining battery like nobody's business and making it almost impossible to use.

Yeah, I'd call Sammy about it if I were you. Shouldn't take that long to setting down. Mine's been running like a champ after those first few days.

christran12 said:
Yeah, I'd call Sammy about it if I were you. Shouldn't take that long to setting down. Mine's been running like a champ after those first few days.
Click to expand...
Click to collapse
They told me buy a new battery. When I got mad and demanded another rep, advised me to go back to TMO. But since then, its suddenly settled down.

You may have a buggy App that's running in the background. As with anything, try to keep it as clean as possible. Don't install every App under the sun thinking you'll need them someday. Just install what you need at that minute. You can also try to disable as many carrier bloat Apps as possible (the ones that will let you). That always seems to help me.

Having headaches with my battery life

So I'm getting pretty bad battery life on my Spring Galaxy S6 Edge. I got the S6 last week and I can still return it to Sprint and get a different phone. (I'm looking at the G4 right now). I've been reading almost every battery thread on XDA and reddit and I just can't figure out how to get better battery life. I'm running the latest stock software. I am not rooted. I've already tried a factory reset and disabled all unnecessary apps.
Right to the point, I get around 2~2.5 SOT on my phone usually with only Wifi on, low brightness, and location set to battery saving. Now, I'm happy with how the phone drains when I'm actively using it. I got about 50 minutes SOT of reddit, instagram, facebook, etc and it drained about 15%.
What I'm not happy about is the idle battery drain/screen off drain. On multiple occasions, I charged my phone to 100% and let it sit over night. I would almost always wake up around 90 or 91% with around 8-10 hours of sleep. Other times, the battery just drains at a crazy 5%/hour. How do I minimize idle battery drain? It's driving me crazy. I don't think this is a problem with the S6 specifically, as I had this problem with my M8 running lollipop before.
I look at CPUspy and it looks like my phone is going to deep sleep around 60% of the time. I'm would like that number to be higher, but I'm entirely sure if 60% is good or not.
On GSam, I always notice that Android System and Kernel are top of the list. Not sure how to tame those. Other apps seem to be doing okay.
So I'm looking for tips and advice on how to make sure I'm getting the best idle drain without going into airplane mode. I know that if I get get idle drain down, then this phone or really any phone can last me all day and get 5-6 SOT. I also read somewhere that reflashing the firmware might help, but I'm trying to see all of my available options before I do so.
Thanks everyone!
EDIT: I'll also try to add screen shots after using it for a few hours!

You may have a defective battery. Return your S6 back to Samsung for warranty replacement.

dannyyang524 said:
So I'm getting pretty bad battery life on my Spring Galaxy S6 Edge. I got the S6 last week and I can still return it to Sprint and get a different phone. (I'm looking at the G4 right now). I've been reading almost every battery thread on XDA and reddit and I just can't figure out how to get better battery life. I'm running the latest stock software. I am not rooted. I've already tried a factory reset and disabled all unnecessary apps.
Click to expand...
Click to collapse
http://www.apkmirror.com/apk/google-inc/google-play-services/google-play-services-7-5-73-1976294-440-android-apk-download/
Disable Location service when you don't need it, it drained lots of battery and install the above ver of Google Services will help battery. A new battery will take at least two weeks to completely optimize the battery.

TheEndHK said:
http://www.apkmirror.com/apk/google-inc/google-play-services/google-play-services-7-5-73-1976294-440-android-apk-download/
Disable Location service when you don't need it, it drained lots of battery and install the above ver of Google Services will help battery. A new battery will take at least two weeks to completely optimize the battery.
Click to expand...
Click to collapse
Sorry, I don't buy that it takes two weeks to fully optimize the battery. I'm not going to take the chance and wait it up and hope it gets better when I can go back to the store and get a new phone.

Battery life greatly getting worse

Has anyone noticed their battery getting incredibly worse over time? I bought my S7 on release (non edge). And since then, I've noticed that it doesn't last no where near as long. Today, for example I started my day at 7:00am when the battery was 100%. As of 30 minutes ago, the battery reached critically low (5%). From 7am all I did was watch a few videos, facebook, snapchat and then play music. But all the above for not too long.
I've also noticed that once the phone hits the 15% battery (I know due to the notification), that within minutes the battery can be done to 10% or so, without touching it.
I'm more so tempted just to take it back, unless there's an easy fix OR it's a known issue with the current version.
Thanks!

xxshabsxx said:
Has anyone noticed their battery getting incredibly worse over time? I bought my S7 on release (non edge). And since then, I've noticed that it doesn't last no where near as long. Today, for example I started my day at 7:00am when the battery was 100%. As of 30 minutes ago, the battery reached critically low (5%). From 7am all I did was watch a few videos, facebook, snapchat and then play music. But all the above for not too long.
I've also noticed that once the phone hits the 15% battery (I know due to the notification), that within minutes the battery can be done to 10% or so, without touching it.
I'm more so tempted just to take it back, unless there's an easy fix OR it's a known issue with the current version.
Thanks!
Click to expand...
Click to collapse
I've definitely noticed this since rooting. Maybe it has something to do with that? Like a ROM you flashed or what not? I'd like some suggestions here as well.
Thanks!

musashiasano said:
I've definitely noticed this since rooting. Maybe it has something to do with that? Like a ROM you flashed or what not? I'd like some suggestions here as well.
Thanks!
Click to expand...
Click to collapse
I haven't rooted the S7, it was the first phone that I've left stock from opening.

What does the battery stats say is using the most mAh?
Facebook app is a known battery hog
Obviously over time, you'll install different things, and slowly the phone will start using more and more power running background apps
A backup and Factory reset will show if there is a hardware / battery issue, or if it's purely from stuff you've installed over time
Also clearing the caches from recovery could help

yeah ive noticed this too. My usage habits havent changed but my battery life is almost half of what it was when i just got the phone.

*Detection* said:
What does the battery stats say is using the most mAh?
Facebook app is a known battery hog
Obviously over time, you'll install different things, and slowly the phone will start using more and more power running background apps
A backup and Factory reset will show if there is a hardware / battery issue, or if it's purely from stuff you've installed over time
Also clearing the caches from recovery could help
Click to expand...
Click to collapse
Cache has been cleared from recovery, and I don't generally install many apps so since I've bought the phone the apps have stayed the same.
Android system is always on top. Unless of course I spend hours on Facebook.
Might have to factory reset. I've used my phone with the same apps and time since I've bought it, and I'm finding I'm charging it 3x as much.

I think it's a root issue - deep sleep.
After S6 Edge Plus, when you root a samsung phone, it won't go in deep sleep. I believe there's a fix for that.

Have you checked the battery usage stats? It gives you the breakdown on what apps are eating up the battery.
I have had my S7 for about a month and battery is about the same.

Just to update this thread for those that may have a similar issue...the other day I couldn't live with the battery life the way it was. The phone used 50% in several hours where I barely used it.
Decided to completely re-flash with stock (was stock before) as opposed to simply wiping all data. A week in, and the phone's battery life is back to the way it was. I went to bed when it was on 100% (as a test) and woke up 7 hours later with the phone on 94%, with wifi, location and bluetooth on.
Not sure what had caused it to use so much battery previously, but it's back to what it should be and that's all that matters.

hi with my s7 exynos i do 3h screen. i think there is a problem. i bought my s7 one week ago. can anyone help me?

Rooting and installing custom kernels when done right should greatly increase the battery life of your device. This is a well known guide here on XDA for improving battery life for our devices.
That being said, Lithium Ion Batteries hold less charge the more cycles they are put through, its a given fact but as you said your device is relatively new and therefore should not be experiencing this kind of problem. The way I see this is there are 3 possibilities which may be causing the said problem...
1) You have rooted the device and done some modification/s. ( which you haven't done )
2) Your battery is being drained by a service ( Like Oculus or VR ) in fact a number of reddit users complained their S7 was overheating and battery was draining really fast for some reason. Check This page out, It might help you.
3) Battery Defect, you must've gotten a "bad" model, if you haven't tripped KNOX you could try bringing your phone to Samsung and see if they would fix or replace it.
Good luck

I think this has to due to them samsung updates. As far as i know samsung been always doing things like this where they made the OS slow as hell after a while so you gonna get a upgrade sooner but a battery should last 2 years minimal without degrading.
---------- Post added at 03:36 AM ---------- Previous post was at 03:34 AM ----------
petmike2 said:
hi with my s7 exynos i do 3h screen. i think there is a problem. i bought my s7 one week ago. can anyone help me?
Click to expand...
Click to collapse
i get like 5 hours screen on time and bout 1 day standby time but i have most bloatware disabled with the package disabler. But if i was you i would contact samsung.

This happens with Samsung updates on every Galaxy phone. It's like a curse. It's unavoidable.
Enviado desde mi SM-G920F mediante Tapatalk

May i ask if the people with these problems use the fast charge? I hearing many bad things bout this so i switched it off and must say the normal charge isn't that slow and if it can keep the battery good for longer then we all should use this.

I turned fast charge off about a week after I got the phone, was making the phone and charger pretty hot for the sake of about 5-10 mins quicker charge
Pointless really, unless you are desperate, only have a few mins spare and need as much power as possible in that short time, and if that's the case, enable it for that one time

Restrict background data on all but the most important apps (phone, text, email), dave power all but the most important apps. Battery life is fine
Sent from my SM-G935T using XDA Free mobile app