Develop Bugs

[Q] Horrible Battery Life

How is everyone finding the battery life. Personally, I am finding it just plain horrible. I'm not sure what the issue is specifically but either something is draining it or it is just really that bad, in which case I will return it. I can't get a day's worth of moderate use out of it. It seems to be at most half of what I get from my note 10.1 and they aren't set up any differently. I've tried some of the basics like turning down the screen brightness (which annoys me), turning off the smart stay (but why have a feature you can't use), tweaking email checking settings, turning off samsung sync, turning off bluetooth (don't use it), and locations services. Is anyone else seeing this as an issue and does anyone have any additional suggestions for me to try?
Thanks in Advance

I get about two days between charges on mine. I get a decent amount of usage on a daily basis between email, Facebook, and candy crush. I even have Google Now running. How many charge cycles have you been through?

05GT said:
I get about two days between charges on mine. I get a decent amount of usage on a daily basis between email, Facebook, and candy crush. I even have Google Now running. How many charge cycles have you been through?
Click to expand...
Click to collapse
If by charge cycles you mean fully discharging the phone until it shuts off, I haven't done that, but could give it a shot. It has gone down to 10% several times though.

No battery problems here. I wouldn't blame charge cycles, if they have any effect at all, it is minor. If I were you, I would do a factory reset, followed by an exchange if the reset doesn't fix it.
I have smart stay on , backlight on auto, and take no extra precautions for battery savings.

DownTFish said:
How is everyone finding the battery life. Personally, I am finding it just plain horrible. I'm not sure what the issue is specifically but either something is draining it or it is just really that bad, in which case I will return it. I can't get a day's worth of moderate use out of it. It seems to be at most half of what I get from my note 10.1 and they aren't set up any differently. I've tried some of the basics like turning down the screen brightness (which annoys me), turning off the smart stay (but why have a feature you can't use), tweaking email checking settings, turning off samsung sync, turning off bluetooth (don't use it), and locations services. Is anyone else seeing this as an issue and does anyone have any additional suggestions for me to try?
Click to expand...
Click to collapse
Can you please post some screen shots of your battery life at the end of a typical cycle? It will help with comparisons by giving us more details on your running apps, screen-on display times, etc. Also, what wakelocks do you have? Use BetterBatteryStats or Wakelock Detector from the Play store for that. This info might help us to identify just how much drain is related to rogue apps or the general battery life itself.

sefrcoko said:
Can you please post some screen shots of your battery life at the end of a typical cycle? It will help with comparisons by giving us more details on your running apps, screen-on display times, etc. Also, what wakelocks do you have? Use BetterBatteryStats or Wakelock Detector from the Play store for that. This info might help us to identify just how much drain is related to rogue apps or the general battery life itself.
Click to expand...
Click to collapse
Thanks. Just downloaded BetterBatteryStatus. I'll let it run for a bit and see what comes up. I'll post what I came up with with screen shots from it. Thanks for pointing me in a direction.

Also, it'd help to know how many hours "just plain horrible" is.
I'm not delighted by the battery life I'm seeing, I'm finding I want to charge every night, and that I can easily consume 15% / hour or more even without the screen turned up past 20-25%. (watching video off the NAS in the house.)
Then again, this is the first LCD display I've been able to read in full sunlight, and that's remarkable to me. I often wind up with full sun in the morning when I get up, and am delighted that if I did charge overnight I can use the device even then.

The battery needs some initial "training".
Charge fully on the first and run it all the way down to nearly zero, and fully charge again.
DO NOT interrupt the initial charge.

Battery life is great here after 5 cycles running it to 1% and recharging full at first it was draining faster but now I can watch 4 hours of netflix and still have 25% left nice thing is that the battery charges superfast so no worries

DownTFish said:
If by charge cycles you mean fully discharging the phone until it shuts off, I haven't done that, but could give it a shot. It has gone down to 10% several times though.
Click to expand...
Click to collapse
10% is just fine, for purposes of calibrating the battery meter. Preferable actually. You shouldn't actually drain the device until shutdown. There are safeguards that are supposed to ensure the battery voltage does not drop too low (its not actually zero when the phone shuts down). However, in reality these safeguards are not always failsafe and I've seen plenty of cases on various Android devices where letting the battery drain to shutoff renders the battery unable to take a charge (below the minimum threshold voltage). Sometimes, letting the battery charge overnight will bring the battery back. Otherwise, you are pretty screwed, as the only remedy would be a battery meter with a boost function.
In any case, the battery meter is not very accurate, even under the best of circumstances, so letting it drain to 10% is plenty accurate enough. Then let it charge to 100%, and let it sit at full for a while, as fully saturating the battery takes extra time.
---------- Post added at 11:15 AM ---------- Previous post was at 11:08 AM ----------
That said, its hard to say what "moderate use" means. Everyone uses their devices differently. If you are playing intensive games, downloading files, heavy internet usage, it can drain the battery much faster than other activities. And the number of hours of screen-on time is key. So the idea of getting some battery stats and screenshots, is a good one.
I haven't been tracking screen-on time myself. But I find the battery to be decent. I use it a good amount in the evening (don't bring it to work) mostly for reading and web browsing. I have brightness on 40-50% usually (sometimes less, if the room is darker). The battery was just under 40% after 2 nights of use (maybe 40 hours after the last charge). Just guessing, but maybe 3 or 4 hours of screen on time?
Some online reviews mentioned the battery life is not as good as some other comparable devices (such as Nexus 7 and iPad Mini). Not surprising, since the Note 8 has a faster processor and higher resolution screen than either. And so far, battery life is not amazing, but seems comparable or better (better drain while idle) than my old HTC Flyer tablet. So for me, thats just fine.

I got about 4 hours screen-on time on my first battery cycle with heavy usage. Was playing games, movies, internet browsing, etc. My second and third cycles were better, giving me 5-6 hours screen-on time with moderate to heavy usage. Didn't really play any movies, but did play a fair amount of games and stuff.
On those later cycles my screen-on drain represented about 85% of my overall drain. This leads me to say that you can expect 4.5-6.5 hours of screen-on time with the Note 8, depending on usage. Keep in mind that I keep wifi always on, disabled bluetooth/auto-sync/smart stay, stopped some running apps like Maps and Factory Test, and kept brightness down to about 15% of the max setting.
Screen is definitely the big drain here, and these results lead me to believe that even with root and apps like Greenify I would not get much better results. Looks like any further battery savings will need to come from a custom kernel and custom rom (unless maybe you root and then underclock/undervolt using a third party app like Voltage Control or SetCpu). Anyone else have similar (or different ) results?

mingkee said:
The battery needs some initial "training".
Charge fully on the first and run it all the way down to nearly zero, and fully charge again.
DO NOT interrupt the initial charge.
Click to expand...
Click to collapse
dumbest thing wrote in this thread probably. You do not need to train or do a full charge. How come people still believe that nonsense in 2013 ??

Bagbug said:
dumbest thing wrote in this thread probably. You do not need to train or do a full charge. How come people still believe that nonsense in 2013 ??
Click to expand...
Click to collapse
:what:...XDA is for fun and for sharing; not for putting others down. Please be a little more respectful towards forum users when you post in the future. If you disagree with something then just explain so we can all learn together.

I am assuming the Note 8 has a lithium based battery. I couldn't confirm it though. The below link has some tips for how to care for different type of batteries. Useful reading.
http://www.techrepublic.com/blog/tablets/how-and-when-to-charge-your-tablet-battery/814
Sent from my GT-N5110 using xda app-developers app

Although the battery life is of concern to me, the fact it charges via a micro USB input rather than propriatry cable alieviates that worry (looking at you Apple). I dont think I go anywhere where there isnt a charger available thanks to the amount of devices that use them.

Bagbug said:
dumbest thing wrote in this thread probably. You do not need to train or do a full charge. How come people still believe that nonsense in 2013 ??
Click to expand...
Click to collapse
While his terminology might have been a bit clumsy, he is not completely incorrect.
The terminology of "training the battery" invokes the concepts of conditioning the old technology NiCad batteries to prevent memory effects, which are not a concern with Li ion batteries, which is what you seem to be referring to. Folks on XDA will often talk about conditioning or calibrating the battery, which can be a bit misleading (as often they have the behavior of the old NiCad batteries in mind when saying this).
However, it is true that the battery meter needs to be calibrated to be completely accurate. This calibration has no chemical effect on the battery itself (like it does with NiCad batteries) but simply effects how the current readings are displayed by the % battery meter on the device's screen. Without fully charging and draining the device, it doesn't have fully accurate "flags" associated the current to battery %.
http://batteryuniversity.com/learn/article/battery_calibration
Failure to calibrate the meter won't have a negative chemical effect, like failure to periodically condition a NiCad battery. And therefore it won't have an affect on the battery life. But properly calibrating will give you the most accurate % battery reading possible. The battery meter is not accurate out of the box, after a ROM flash, and an OTA may also reset the calibration.
As I've already mentioned in a previous response, I don't recommend draining the battery to shutoff. As doing so can lead to the battery no longer taking a charge, and the device no longer powering on. Its rare, but it does happen. Fully changing, then draining to 10% or so is enough. Full cycles are also not good for the long term life of the battery, although just doing it once every few months is still acceptable.
---------- Post added at 10:21 AM ---------- Previous post was at 10:07 AM ----------
kisrita said:
I am assuming the Note 8 has a lithium based battery. I couldn't confirm it though. The below link has some tips for how to care for different type of batteries. Useful reading.
http://www.techrepublic.com/blog/tablets/how-and-when-to-charge-your-tablet-battery/814
Click to expand...
Click to collapse
Pretty good link, thanks. And reinforces what I just said above.
Most any smartphone or tablet made in the past several years uses a Li ion battery. This confirms it: http://www.gsmarena.com/samsung_galaxy_note_8_0_n5100-5252.php
---------- Post added at 10:26 AM ---------- Previous post was at 10:21 AM ----------
hertsjoatmon said:
Although the battery life is of concern to me, the fact it charges via a micro USB input rather than propriatry cable alieviates that worry (looking at you Apple). I dont think I go anywhere where there isnt a charger available thanks to the amount of devices that use them.
Click to expand...
Click to collapse
The charger for the Note 8 is 2 Amps, while most MicroUSB chargers (at least for phones and other small devices) are 1 Amp. Although this varies, and there are other tablet chargers that are also 2 Amps; but these are far less common than phone charges that just about anyone with a phone that isn't Apple will have.
What this means is that the 1 Amp charger will charge the Note 8 very slowly. I tried mine on a 1 Amp charger just once so far. Left it on for maybe an hour, and the charge only increased by a few percent.
So yes, you can charge with most MicroUSB chargers in a pinch. But it will be slow.

hertsjoatmon said:
Although the battery life is of concern to me, the fact it charges via a micro USB input rather than propriatry cable alieviates that worry (looking at you Apple). I dont think I go anywhere where there isnt a charger available thanks to the amount of devices that use them.
Click to expand...
Click to collapse
Don't get the physical plug of a charger confuse you - I believe this tablet needs a 2amp output from the charger, meaning just because your charger has the same end connection, it won't necessarily help you charge this battery. I've had my users come to me thinking their devices are defective because they somehow started charging their tablet with their Bluetooth headset charger.
Someone also mentioned the black wallpaper that might help with the battery consumption - I believe that is only helpful on AMOLED screens that Samsung has used on other devices.
I'm really still on the fence on keeping it after I bought this - I'm coming from a GT 7.7 which had excellent build quality,screen, and battery life. The loss of the AMOLED screen for both graphics and battery efficiency is bothering me. I put both up side by side and feel disappointed that Samsung couldn't just make a JB updated 7.7 with new CPU, 2GB RAM, and stylus with the same design and beautiful Super AMOLED Plus screen. It's not even the price - but just feeling like I'm getting a somewhat inferior device (in a few but important aspects) from the 7.7, when it's supposed to be an upgrade to the older device.
I've seen the news about an upgrade to the 7.7 possibly coming, but will it come with the stylus that is also important to me and the other software enhancements from the Note 8?

Bagbug said:
dumbest thing wrote in this thread probably. You do not need to train or do a full charge. How come people still believe that nonsense in 2013 ??
Click to expand...
Click to collapse
Funny thing happened on mine.
The battery was VERY BAD the second day, but it could play live streaming for two hours when the battery was 1%. As soon as the tablet went off due to depleted battery, I charged it until it went all the way until the "full battery" came up.
After that, the battery is much better now, so don't say anything "dumb" or any nonsense because it works.

rEVOLVE said:
Someone also mentioned the black wallpaper that might help with the battery consumption - I believe that is only helpful on AMOLED screens
Click to expand...
Click to collapse
That is correct, having a black background does not effect battery life on LCD screens.
On AMOLED screens, black pixels are actually not emitting light (while pixels displaying other colors emit light), which is why a black background will cause less battery drain than other colors.
On an LCD, the liquid crystal layer that depicts the colors is not itself a source of light. Its lit from the back, and the light intensity of the backlight is the same regardless of what color is being displayed. How much light is blocked or let though by the liquid crystal layer varies depending on their alignment (what color is being displayed). But this doesn't affect how bright the backlight is, anymore than pulling a window blind makes the sun burn less hydrogen.

Speedy Gonzalez said:
Battery life is great here after 5 cycles running it to 1% and recharging full at first it was draining faster but now I can watch 4 hours of netflix and still have 25% left nice thing is that the battery charges superfast so no worries
Click to expand...
Click to collapse
Only four hours? My Nexus 7 averages about 10.5 hours of Netflix with 10% left. I wonder how other note 8's compare?
Sent from my Nexus 7 using xda premium

[Q] How is the battery in G3?

How is the battery? Should I buy this phone?

I usually get 17 to 18hrs, heavy usage but no game play

Battery life is very good with custom Rom, custom kernel, some disabled services...

I love battery life, I can easily get 2 days with a single charge, wifi or 3G all the time. No games though. What is more strange is that 3G doesnt drain my battery at all.

Lavoslav said:
I love battery life, I can easily get 2 days with a single charge, wifi or 3G all the time. No games though. What is more strange is that 3G doesnt drain my battery at all.
Click to expand...
Click to collapse
aids said:
Battery life is very good with custom Rom, custom kernel, some disabled services...
Click to expand...
Click to collapse
ipguy said:
I usually get 17 to 18hrs, heavy usage but no game play
Click to expand...
Click to collapse
But what about screen on time? How much you get? And Im gonna use clean lg Rome.

Lol2323 said:
But what about screen on time? How much you get? And Im gonna use clean lg Rome.
Click to expand...
Click to collapse
Most people get about 4-5 hours of SoT on a charge. I find I can only achieve this when I have the backlight set on a low setting. I usually have it somewhere between 0-30% and the phone can last me about 30 hours on a charge. I usually charge when I'm around 15-20% though so I could technically go to about 36 hours but I don't like waiting until I'm fully depleted to recharge. If you're a daily charger, the battery life on this phone will be completely fine for most days.
(The 4-5 hours of SoT is for when the battery gets completely depleted, not what I get around 20% battery left)

If you're planning to play games most of the time, than this is not the phone for you. Games just drain the battery, I don't think it will last for more than 2, maybe 3 hours while gaming. For everything else, battery is very good.
Sent from my LG G3 using Tapatalk

Battery gets winged about on this phone alot.
Myself i find it amazing - if im just using basic stuff on it every couple of hours i could easily get 3 days out of it, on standby it drains about 1% every 7 hours - that was after i used greenify.
Wifi and 3g just sitting on dont seem to affect it at all
---------- Post added at 10:28 PM ---------- Previous post was at 10:27 PM ----------
aids said:
Battery life is very good with custom Rom, custom kernel, some disabled services...
Click to expand...
Click to collapse
Wow 6 hours screen on - most i think ive seen

TwinHeadedEagle said:
If you're planning to play games most of the time, than this is not the phone for you. Games just drain the battery, I don't think it will last for more than 2, maybe 3 hours while gaming. For everything else, battery is very good.
Sent from my LG G3 using Tapatalk
Click to expand...
Click to collapse
Not at all for gaming. Maybe just one lite game once a day.

TwinHeadedEagle said:
If you're planning to play games most of the time, than this is not the phone for you. Games just drain the battery, I don't think it will last for more than 2, maybe 3 hours while gaming. For everything else, battery is very good.
Sent from my LG G3 using Tapatalk
Click to expand...
Click to collapse
Japultra said:
Most people get about 4-5 hours of SoT on a charge. I find I can only achieve this when I have the backlight set on a low setting. I usually have it somewhere between 0-30% and the phone can last me about 30 hours on a charge. I usually charge when I'm around 15-20% though so I could technically go to about 36 hours but I don't like waiting until I'm fully depleted to recharge. If you're a daily charger, the battery life on this phone will be completely fine for most days.
(The 4-5 hours of SoT is for when the battery gets completely depleted, not what I get around 20% battery left)
Click to expand...
Click to collapse
So battery is ok?

With sync on, brightness on auto on around 50%, some gaming, mostly low usage you can get 24 hours of the thing.
The battery is not "excellent" but it's good enough.

The battery has always been really excellent for me. Most days, I can go without charge at least until 10:30 at night, and I am a very heavy user. I have gotten over 6.5 hrs on screen time on multiple occasions. That said, my brightness settings are usually quite low, 0-30% range, and the screen still consumes about 57% of my battery usage.

The best was 112 hours, but it was a week with a lot of stuff to do and little attention paid towards the phone...usually I get 3-4 days, so 70-90 hours with medium usage, wi-fi or data used during day and all communication turned of at night. I am very pleased of the battery life of G3

I'm mostly through the day in a 4g environment with 50-70% signal strength (unscientific on what the phone shows). guess that accounts to the battery life, most likely on 3g I would squeeze more out of it, but it's not all "dandy" and "overwhelming".
---------- Post added at 10:20 PM ---------- Previous post was at 10:11 PM ----------
This was today, good, but low screen on time... I should reach the 24 h mark with that usage but if I would stress the thing more...

It depends on the service your getting. If I'm in a good service area it lasts forever. It's comparable to my m8 and m7 and Galaxy s3. Not much more or less.

If you do decide to buy this amazing piece of tech, download deep sleep battery saver. I noticed about a 20 percent increase in standby time.
Sent from my AWESOME G3!!!

Lol2323 said:
How is the battery? Should I buy this phone?
Click to expand...
Click to collapse
I myself have the G2 and it's excellent from the specifications, everything amazing. It should even have better battery life than the G3 because of the resolution.
Anyhow I would say never LG again! The software is a mess. It's slow, laggy, bloated and has an awful design. Of course you can use Aosp roms but guess what? LG has closed sourced drivers so using an aosp rom will ruin your camera quality and battery life. It's really sad. Such an amazing phone, but ruined by the software

Janine Belle said:
I myself have the G2 and it's excellent from the specifications, everything amazing. It should even have better battery life than the G3 because of the resolution.
Anyhow I would say never LG again! The software is a mess. It's slow, laggy, bloated and has an awful design. Of course you can use Aosp roms but guess what? LG has closed sourced drivers so using an aosp rom will ruin your camera quality and battery life. It's really sad. Such an amazing phone, but ruined by the software
Click to expand...
Click to collapse
I ran G3 firmware port on g2. Was just as good. Lol. Mostly anyway. But im hardcore into specs on paper. (I know) lol smh..I'm totally an upgrade hound. I snag every one. Nexus 6 by end of Nov. Lol
Sent from rotary technology Phone

Droid2drummer said:
I ran G3 firmware port on g2. Was just as good. Lol. Mostly anyway. But im hardcore into specs on paper. (I know) lol smh..I'm totally an upgrade hound. I snag every one. Nexus 6 by end of Nov. Lol
Sent from rotary technology Phone
Click to expand...
Click to collapse
I ran the G3 port too, but the difference is marginal. And it's very slow, loading caller, contacts or settings shows that LG can make one of the fastest snapdragons as "fast" as the smartphones four years ago lol. I think in the end nexus devices are the best, as they have clean and updated firmware as well as tons of good and usable custom roms.

---------- Post added at 09:34 PM ---------- Previous post was at 09:32 PM ----------
[/COLOR]
aids said:
Battery life is very good with custom Rom, custom kernel, some disabled services...
Click to expand...
Click to collapse
---------- Post added at 09:38 PM ---------- Previous post was at 09:34 PM ----------
[/COLOR]
aids said:
Battery life is very good with custom Rom, custom kernel, some disabled services...
Click to expand...
Click to collapse
life battery is gooooooooood.. name rom custom ??

MI6 battery capacity

I have no complains about my MI6 battery, getting 6+hours SOT after MIUI 9, but here is the deal.
Xiaomi says MI6 has 3.350mAh battery. I ve downloaded Accubattery to monittor charging-discharging. I ve noticed that
phone charged from 2% to 100 % and measured only 2.872mAh, so app show that phone has estimated capacity of about 3000mAh and not 3350...
Any ideas?? is that just statistic and app doesnt get correct measures? i ve also tried chaging for more time but it didnt change anything...

same here, accubattery says 2850-2950 mAh.

Well, at least in the teardown videos I watched, the numbers written on the barttery really are 3250/3350 Mah ... If the app is right, it could be a giant mistake by Xiaomi to give this information.
Sorry for my bad english.

Also got the same numbers.. Means the capacity is less than 3k??

No, the app is just inaccurate.

Cozzmy13 said:
No, the app is just inaccurate.
Click to expand...
Click to collapse
Combination of wildly inaccurate app and the fact that lithium ion batteries degrade over time.
Anyone who lets their battery to below 20% regularly will see a greater degrading of their capacity compared to someone keeping charge above 20%.
We need an alternative, but unfortunately they are not cost effective at the moment.
Also OEMs love to use degradable parts that need replacement. Hence why phones are being "water resistant" now as it gives the excuse to prevent user replaceable batteries.
Negative effects being primarily cost for consumers but in the long run the more devastating effect will be the damage to the environment from e waste.

Those apps are inaccurate. You cant trust them 100%

HI People , please can anyone see if my phone xiaomi mi 6 have battery issues ?
I have 3h screen on time with low usage wifi on data on screen 50% all of this at 15%
:Boa::Boa::Boa:
THANKS SO MUCH

Well, I was used to doing 10h of sot.
Those days it's only 6h max.
When I use accubattery, it shows me 2700mah.

Same here , I bought a new mi6 recently. How is your battery holding up recently ?

I have usb meter and it confirms mAh from accubattery. Accubattery is amazing good, always almost this same results like in usb meter.

askor said:
I have usb meter and it confirms mAh from accubattery. Accubattery is amazing good, always almost this same results like in usb meter.
Click to expand...
Click to collapse
don't forget if you charge the battery from 0%-100% the battery isn't trully 0% it's more like 5%-10% battery left, which is not "used" by the phone as the battery would simply need to be charged on a station machine thingy (not a normal charger, it plugs directly to a battery) so it means that the battery has 3000mah "usable" by us the users and a 350mah is just enough to save the battery from any long term problems from this super harsh charging cycle ( i personally charge from 20%-40% up to 60%-80% and if, this is a big IF i go somewhere for a long time i will charge the phone to 100%)
---------- Post added at 11:51 AM ---------- Previous post was at 11:48 AM ----------
brunodsousa said:
HI People , please can anyone see if my phone xiaomi mi 6 have battery issues ?
I have 3h screen on time with low usage wifi on data on screen 50% all of this at 15%
:Boa::Boa::Boa:
THANKS SO MUCH
Click to expand...
Click to collapse
I charge my phone from 20%-40% up to 60%-80% and it holds (with heavy usage (youtube 1080p60fps, Bloons TD battles, asphalt 9, social media)) up to 6-8hours of screen on time, probably there is some sort of "malware" on your phone if you installed any apps from other sources than the google play store.

AWESOME1092387456 said:
don't forget if you charge the battery from 0%-100% the battery isn't trully 0% it's more like 5%-10% battery left, which is not "used" by the phone as the battery would simply need to be charged on a station machine thingy (not a normal charger, it plugs directly to a battery) so it means that the battery has 3000mah "usable" by us the users and a 350mah is just enough to save the battery from any long term problems from this super harsh charging cycle ( i personally charge from 20%-40% up to 60%-80% and if, this is a big IF i go somewhere for a long time i will charge the phone to 100%)
---------- Post added at 11:51 AM ---------- Previous post was at 11:48 AM ----------
I charge my phone from 20%-40% up to 60%-80% and it holds (with heavy usage (youtube 1080p60fps, Bloons TD battles, asphalt 9, social media)) up to 6-8hours of screen on time, probably there is some sort of "malware" on your phone if you installed any apps from other sources than the google play store.
Click to expand...
Click to collapse
I checked it from full discharge to 100% (and I wait until there is 0,01A on usb meter because when phone show 100% there is still quite high charging).

S20U, 15%->0% very fast drain

So I've had my S20U for a while now (almost 3 months), yet today something odd happened. I called my gf with about 20% battery left, we talked for about 30 minutes, then I started using facebook while talkin to her (i was on my home wifi network not 4g) and after a bit it started to drain the battery VERY fast. When i mean fast, I mean i could see the % going down faster then 1% per minute, more like 1% every 30 sec. I decided to quit the call at 2% and few seconds after that the Samsung logo appeared and the phone totally went off, 0%.
Now I charged it back to 100% and after 2 hours of idle its at 98% which seems to be the usual drain while idle (1%) but what I'm wondering is... what the hell happened before? Have had every Galaxy out since S2 and i've never seen a battery drain like that before. I know when battery goes down very fast its usually a sign of a serious problem with battery, but this is a 3 months old phone... since i've had it i've never let it go below 15-20% since i know its bad to let it go that down and i usually start charging it at 20%, is it possible that maybe it was calibrated bad and thus it drained so fast?
Any other ideas? Thank you.

No clue?

- Are you using superfast charging? This will deteriorate the battery quicker.
- Never let the battery (if you can) drop below 20% & avoid charging above 85% , there is enough data available to show that charging between this 65% dynamic slows the battery wear cycle considerably.
- You called with 20% , while having WiFi on & scrolling Facebook (animations use GPU power , The display drains most the battery - WQHD by any chance?)
With the utmost respect this sounds normal particularly if you let the battery die & charge to full using 3amp power output
Sent from my Samsung Galaxy S20 using XDA Labs
=== Apologies I did not see you state that you don't let it drop below 20% ?? avoid charging above 85% , i use accubattery for this ===

know.i.dee said:
- Are you using superfast charging? This will deteriorate the battery quicker.
- Never let the battery (if you can) drop below 20% & avoid charging above 85% , there is enough data available to show that charging between this 65% dynamic slows the battery wear cycle considerably.
- You called with 20% , while having WiFi on & scrolling Facebook (animations use GPU power , The display drains most the battery - WQHD by any chance?)
With the utmost respect this sounds normal particularly if you let the battery die & charge to full using 3amp power output
Sent from my Samsung Galaxy S20 using XDA Labs
=== Apologies I did not see you state that you don't let it drop below 20% ? avoid charging above 85% , i use accubattery for this ===
Click to expand...
Click to collapse
20% > 85% gives you 65% capacity, if the aim is to prevent battery wear, you've already just lost 35% anyway, defeats the point...
0>100% until the battery only holds 65% charge will give you way more life before you're stuck with 65% capacity, which would take years and years anyway
Not seen any data on super fast charging causing higher battery wear, I know its been a worry to people for a long time but no actual evidence, in fact I've read articles saying it does not.

Ok thanks for the replies but, let me make some points:
1 - S20U has a very fast charge for a reason. If it hurt the battery THAT bad, it would not be there. If Samsung put it there, it means they have done a lot of testing, and yes while I agree that after a year or so using it all the time you might stress the battery a bit more than with slow charge, for sure it doesnt happen after less than 3 months, and to the point of what i experienced.
2 - Again, whIile it is true that modern batteries are better kept between 20 and 80% (and its suggested when you, for example, decide to pull a battery out and keep it in a box), its also NOT true that not doing so will ruin your battery fast. I mean, your phone is made to be used, whats the point to charge it to only 80% and then have no power left during day when you're out and need it? Its just stupid. Everyone going out to work in the morning will charge it to 100%.
3 - Both 1 & 2 will help battery but thats something you'd see after a LONG TIME of using it, and the gain you see would be so little (probably about 10% ish over 20 months) that is really not even worth following those guidelines, its easier to replace the battery (or the phone, in my case, since I buy the newest model every year).
4 - What I experienced Is VERY different and for sure didnt happen for reason 1+2. And no, I always make calls while using Facebook and I've never seen the % go down that fast, like 1% every 30 sec like the other night. Something was draining the battery like I've never seen before in 9 years of Samsung Galaxy. And it happended below 20% so I'm not sure that has to do with it or not (in other words: if my phone was at 70%, would i still have had a drain so fast? who knows, maybe the problem was under 20% that was not calibrated right, but im not even sure this is possible, this is why i opened this topic).
5 - PS Most importantly: Ive never let it go below 15% since I've had it, and i probably charged it fast one time or two, i usually charge it wirless with slow recharge, so again, 1&2 makes even less sense in my case.

Ok update, it happened again. Was at 15% and i was on the phone while playing with facebook, after a while goes to 10% so i killed all tasks and shut down the screen and just talked on the phone, after less than a minute i turned screen on again to check % and was 1%. Went from 10% to 1% in about less than 60 seconds of screen off. Any idea what could be the problem?

tharghan said:
Ok update, it happened again. Was at 15% and i was on the phone while playing with facebook, after a while goes to 10% so i killed all tasks and shut down the screen and just talked on the phone, after less than a minute i turned screen on again to check % and was 1%. Went from 10% to 1% in about less than 60 seconds of screen off. Any idea what could be the problem?
Click to expand...
Click to collapse
Although it could be a battery issue as advised above I'd firstly try a factory reset and install all apps as new.
If this doesn't work a call/visit to Samsung may be the best option.

bomp306 said:
Although it could be a battery issue as advised above I'd firstly try a factory reset and install all apps as new.
If this doesn't work a call/visit to Samsung may be the best option.
Click to expand...
Click to collapse
I was suggested to try using *#0228# anyone got experience about it?

https://accubattery.zendesk.com/hc/en-us/sections/202397985-AccuBattery-Research-and-Methodology
Here's some research conducted by folk who can go beyond speculation
Sent from my Samsung Galaxy S20 using XDA Labs
---------- Post added at 05:45 PM ---------- Previous post was at 05:42 PM ----------
tharghan said:
Ok thanks for the replies but, let me make some points:
1 - S20U has a very fast charge for a reason. If it hurt the battery THAT bad, it would not be there. If Samsung put it there, it means they have done a lot of testing, and yes while I agree that after a year or so using it all the time you might stress the battery a bit more than with slow charge, for sure it doesnt happen after less than 3 months, and to the point of what i experienced.
2 - Again, whIile it is true that modern batteries are better kept between 20 and 80% (and its suggested when you, for example, decide to pull a battery out and keep it in a box), its also NOT true that not doing so will ruin your battery fast. I mean, your phone is made to be used, whats the point to charge it to only 80% and then have no power left during day when you're out and need it? Its just stupid. Everyone going out to work in the morning will charge it to 100%.
.
Click to expand...
Click to collapse
If your battery was supposed to last forever then there'd be less financial return
Learn about procurement & future proofing from a business perspective
It amazes Me that people in 2020 think that conglomerate corporations entertain ethics
https://accubattery.zendesk.com/hc/en-us/sections/202397985-AccuBattery-Research-and-Methodology
Sent from my Samsung Galaxy S20 using XDA Labs
---------- Post added at 05:54 PM ---------- Previous post was at 05:45 PM ----------
An additional caveat is the fact that the note 4 was (I think) samsungs last flagship that allowed for removable batteries , hence so many folk still use the phone today.
This notion does not help Samsung ; sentiment to their moral stance , or lack of.
Business is business eh ??
Sent from my Samsung Galaxy S20 using XDA Labs

know.i.dee said:
https://accubattery.zendesk.com/hc/en-us/sections/202397985-AccuBattery-Research-and-Methodology
Here's some research conducted by folk who can go beyond speculation
Sent from my Samsung Galaxy S20 using XDA Labs
---------- Post added at 05:45 PM ---------- Previous post was at 05:42 PM ----------
If your battery was supposed to last forever then there'd be less financial return
Learn about procurement & future proofing from a business perspective
It amazes Me that people in 2020 think that conglomerate corporations entertain ethics
https://accubattery.zendesk.com/hc/en-us/sections/202397985-AccuBattery-Research-and-Methodology
Sent from my Samsung Galaxy S20 using XDA Labs
---------- Post added at 05:54 PM ---------- Previous post was at 05:45 PM ----------
An additional caveat is the fact that the note 4 was (I think) samsungs last flagship that allowed for removable batteries , hence so many folk still use the phone today.
This notion does not help Samsung ; sentiment to their moral stance , or lack of.
Business is business eh
Sent from my Samsung Galaxy S20 using XDA Labs
Click to expand...
Click to collapse
Sorry to say but your post does nothing to fix my problem (which is the reason why i started this thread) and only adds noise. Nobody said a battery is supposed to last forever. What we said is that you arent very smart if you buy a 1370 Euro phone and then charge it very slow all the time, keep it always between 20 and 80%, and never charge it to 100%, and all this to have the battery last a bit longer after 2 years. If you buy a 1370 Euro phone chances are that the next year you wont even have the same phone, and if you still have it after 2 years, 55 bucks for a new battery is nothing.
In other words, doing everything to preserve battery is just retarded, its a matter of cost vs gain, its just not worth. And telling people not tu use very fast charge because it will deteriorate battery quicker IS RETARDED, period. Because you assume that after a year the difference between a phone using always very fast charge, and using slow charge, is huge, meanwhile it isnt. The real problem with batteries is that they deteriorate over time no matter what. You could be super careful but still after 3 years your battery will be nowhere as good as it was when it was new, degrading it a bit with fast charge or charging to 100% makes very little difference in the big scheme of things. And people at accubattery are stupid, they tell us to stop charging the phone at 80%. Hello, I'm supposed to buy a 1370 Euro smartphone and leave home in the morning at 80% and be careful about what i do during the day because it could drain my battery and then go even below 20, or even totally run out since i started at 80%? Or maybe they think people buy a phone like that to use it while sittin their asses off on a chair playing on the pc and charging always between 20 and 80%? Come on, nosense at its best. You buy a phone to USE it. You buy an expensive smartphone to freaking use it as much as you can. Nobody at Apple tells iphone users "hey dont do this, dont do that, dont charge too many times, dont charge too little, bla bla".
PS if you're so worried about using the phone like you should do, dont install and save too much stuff in the internal memory, it'll wear out in the long run. hell, dont even use it too much, the screen itself isnt infinite.

I was on the 20%-80% bandwagon for a while, but just created more battery anxiety (hypervigilance about going below 20% and "overcharging" above 80%). I finally acknowledged that I never keep a phone long enough to see any real benefit of coddling the battery this way. Now I just use my phone how I want to use it, charge it when it needs to be charged, and don't obsess about long-term battery health. If I *do* keep a phone long enough to notice battery degradation, then I'll just replace the battery. The $100 or whatever it costs is worth not worrying about keeping the battery within some magical range.

---------- Post added at 09:16 AM ---------- Previous post was at 09:05 AM ----------
[/COLOR]
sublimaze said:
I was on the 20%-80% bandwagon for a while, but just created more battery anxiety (hypervigilance about going below 20% and "overcharging" above 80%). I finally acknowledged that I never keep a phone long enough to see any real benefit of coddling the battery this way. Now I just use my phone how I want to use it, charge it when it needs to be charged, and don't obsess about long-term battery health. If I *do* keep a phone long enough to notice battery degradation, then I'll just replace the battery. The $100 or whatever it costs is worth not worrying about keeping the battery within some magical range.
Click to expand...
Click to collapse
?? I'm definitely not anxious , if my battery drains it drains , I'm just saying & simply posed a potential in an attempt to help , doesn't work for you or you don't like it don't entertain it
Maintenance is key to longevity +I'm not into phones like most people. If Swapping phones every frickin year is satiating then yeah go hell for leather , it's ip68 , you could take it in the shower too
Sent from my Samsung Galaxy S20 using XDA Labs
---------- Post added at 09:23 AM ---------- Previous post was at 09:16 AM ----------
tharghan said:
. Nobody at Apple tells iphone users "hey dont do this, dont do that, dont charge too many times, dont charge too little, bla bla".
PS if you're so worried about using the phone like you should do, dont install and save too much stuff in the internal memory, it'll wear out in the long run. hell, dont even use it too much, the screen itself isnt infinite.
Click to expand...
Click to collapse
Just an idea , doesn't help - apologies & ignore it
Do what the feck you want - good luck with your issue
Sent from my Samsung Galaxy S20 using XDA Labs

Problem with new battery

Hello.
Two weeks ago I replaced my battery (2 years old) bacause the phone bagan to shut down on 35%, it was getting very hot, with very short life after recharge and so on.
They replaced it with genuine battery and now it's not so much better. Yes, now it goes to 1% and then it shuts down, but still the battery gets very hot and the battery life is not much better than the old one. I installed AccuBattery and it showed Estimated capacity: 2000mAh so I decided to try the guides in the forum for battery calibration... now the estimated capacity is 1400mAh
It's running on Oreo firmware and a custom rom Android 10.
What can I do? Is the battery defective?
Any help will be appriciated!
Thank you!

Darn I can relate to your situation, as mine says about 1837 MAH estimate in accubattery, I just bought this phone about 2 weeks ago from someone on craiglist, got it pretty cheap. I was also thinking of changing my battery but it looks like pretty difficult job. Like the most difficult there is just about.
Are you familiar with the HTC battery test? I'm curious what your old vs new batteries would have scored. My phone is on the charger right now and then when it gets to 100 I am going to run that test finally. I have been using accubattery and charged and discharged the battery a couple times since I bought it which helped (it was estimated as low as 44% capacity at one point ). Right now mine is 63% capacity.
Some lean towards it being a software issue. Also hard to say the source of the new battery and they do sit on the shelf 2 years probably at least since the phone is from 2016.
I am reading a thread and trying to find out what the best rom is for this phone and it might help the battery too. I am just having a problem with Windows 7 connecting (the driver install error, need to reinstall the drivers, M9 also has problem connecting to Windows PC so I can't unlock the bootloaders yet).
Update: I forgot to mention, mine hovers around 60-65% in accubattery, and says about 3.5 hours screen on time. BUt I have not been using this as my phone so I am gonna try that after the battery test and see what I am averaging. I am a light user, wanted a metal phone because they are stronger. A Motorola G7 Power would be a good phone if someone wants battery life and not too expensive on ebay.
This is the thread I am checking out: https://forum.xda-developers.com/htc-10/help/q-htc-10-power-hungry-htc-one-m8-t3791451

Hi.
I tried HTC test tool but it didn't show anything. Unfortunately, I hadn't run any tests with AccuBaterry with the old battery and I cannot compare. I'm beginning to think that it's the battery sitting on the shelf for years (I don't know how much time they can sit this way without worsening their properties) or the Android version. In fact when the phone was new, it had an excellent battry life and after I updated to Oreo firmware (official rom) the battry life got worse. I will try installing older rom, maybe even go back to stock to see if there is any difference.
While charging I see on lock screen Rapid Charge, then it goes to Charge, then Slow Charge... It's changing... I don't know if it's normal. Does it change this way for you?

Have you installed accubattery? You should, because it will tell you how your battery compares to the rated stock MAH capacity.
I ran the HTC Battery test, it drains the battery a bit for one hour, and if yours is 70% or higher after that, it is considered good. Mine was at 89% so that is not too bad.
Try again to run the HTC battery test, it's on page 2 of the tests. Also, I installed a program called generic battery drainer, because you want to cycle your battery to condition/calibrate it (especially with an older batter). When I ran that the first time my phone crashed at about 30-40 percent, and got hot. But then after that, the battery started acting more normal with each and every charge and recharge. That and using accubattery to tell me each time how much my battery was holding. According to accubattery my battery holds about 63% (about 1800mah). Accubattery says that it will give me about 4 hours of screen on time. It is not horrible nore is it that great.
With accubattery, you need to have the phone turned on while charging to gather the stats. I like it and I Think it really helps give me perspective on my battery.
I am thinking of getting a Moto G7 Power so that when we have an EMP attack I can still play videos games lol, just need to get an EMP proof storage of some kind to keep it in.
---------- Post added at 10:05 PM ---------- Previous post was at 09:41 PM ----------
Have you done the HTC battery reset? (3-button hold-down for 2 minutes)? DO that first, then charge to 100% and run the test.
To run the HTC Battery test, first charge your battery all the way to 100%, then type " * # * # 3 4 2 4 # * # *". On the 2nd page there's a battery test function.
---------- Post added at 11:03 PM ---------- Previous post was at 10:05 PM ----------
[/COLOR]
papinho said:
Hi.
I tried HTC test tool but it didn't show anything. Unfortunately, I hadn't run any tests with AccuBaterry with the old battery and I cannot compare. I'm beginning to think that it's the battery sitting on the shelf for years (I don't know how much time they can sit this way without worsening their properties) or the Android version. In fact when the phone was new, it had an excellent battry life and after I updated to Oreo firmware (official rom) the battry life got worse. I will try installing older rom, maybe even go back to stock to see if there is any difference.
While charging I see on lock screen Rapid Charge, then it goes to Charge, then Slow Charge... It's changing... I don't know if it's normal. Does it change this way for you?
Click to expand...
Click to collapse
No I have not had that issue of it showing different charging rates with the same charger. It could be the cable has a short in it.

How long can you watch videos on youtube on Wifi for?
I ran my htc 10 and my HTC M9 head to head, both on youtube via wifi, watching the same at first but also some different and then later the same videos, until the phones drained and shut off.
Screen brightness for this test turned up to 100% btw.
HTC 10= 3 hours and 14 minutes
HTC M9= 3 hours and 38 minutes
Both phones are used i got the 10 on cl, the 9 on ebay. THe HTC 10 my orange led light does not function although the green led does work, I might try and run the led test. The 10 still has 63% capacity on accubattery. The estimated SOT is 4 hrs 4 minutes.
Has anything changed with yours for the estimated capacity? Have you charged and discharged a few times? Also try uninstalling and reinstalling accubattery then charge it some more, alswyas charge it 20 percent or more at a time it says for accurate estimates.
On a side note unrelated to battery I want to get my HTC Phones to work with windows 7 but the driver install never works so far.

Hi cannabiscure.
It's still the same, about 1750 mAh. I've tried the battery reset with the 3 keys before but actually the Accubattery showed less after that. I don't know, maybe it's not related and maybe I didn't made it right. I'll try again and test it but I need to install rom with Sense because it seems 3424 code is not working on pure Android. Reinstalling Accubattery does not change the readings. But I installed an app called Device HW Info and it shows 2700 mAh when the battery is on 100%. This seems far more logical for a new battery. It also shoes something called Kernel profile - 2744/3049 mAh. I don't know what does this mean.
I'm not watching many videos on youtube on the phone. Most of the time I'm browsing.

What is your screen on time (SOT)? How many hours does it say in the stock battery app and also in accubattery?
I got 3.25 hrs watching youtube on wifi with the screen on the highest brightness, so I could probably get at least 4 hours just web browsing and the screen on about 60-70 percent which is what I normally would use.
Are you using wifi or cell data for browsing, and how good is your connection?
Does rapid charging work on your replacement battery? I heard some don't.
papinho said:
Hi cannabiscure.
It's still the same, about 1750 mAh. I've tried the battery reset with the 3 keys before but actually the Accubattery showed less after that. I don't know, maybe it's not related and maybe I didn't made it right. I'll try again and test it but I need to install rom with Sense because it seems 3424 code is not working on pure Android. Reinstalling Accubattery does not change the readings. But I installed an app called Device HW Info and it shows 2700 mAh when the battery is on 100%. This seems far more logical for a new battery. It also shoes something called Kernel profile - 2744/3049 mAh. I don't know what does this mean.
I'm not watching many videos on youtube on the phone. Most of the time I'm browsing.
Click to expand...
Click to collapse