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?
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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.
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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.
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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.
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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 ??
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: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 ??
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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.
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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
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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
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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

Lg g3 battery drain issue [ Tried normal methods % have screen shots ]

Guys im sorry but i have rushed a few replies to get the 10 posts but can you please not take this down i need to know if this is legit as my money back only lasts a certain amount
Ok so i bought a lg g3 from ebay, Its legit i have tested with antutu officer but it can get really hot and battery drains very quickly when watching movies and games.
My screen usage is always above 60% but i have screen on 30 seconds and 0% bright. My phone also says that i have used like 1000 mah at 50% but it should say 1500 mah.
I have a d851 and marshmallow and use my phone only with wifi no gps/nfc i also dont have background apps
My phone gets 188 mins on gfxbench
Screenies
http://imgur.com/D95ABh1
http://imgur.com/G8I2tcS
http://imgur.com/LcM3NRe
http://imgur.com/st0GBFP
http://imgur.com/fi9ho9j
Sorry for structure of thread...
Is this normal guys

razakma16 said:
Guys im sorry but i have rushed a few replies to get the 10 posts but can you please not take this down i need to know if this is legit as my money back only lasts a certain amount
Ok so i bought a lg g3 from ebay, Its legit i have tested with antutu officer but it can get really hot and battery drains very quickly when watching movies and games.
My screen usage is always above 60% but i have screen on 30 seconds and 0% bright. My phone also says that i have used like 1000 mah at 50% but it should say 1500 mah.
I have a d851 and marshmallow and use my phone only with wifi no gps/nfc i also dont have background apps
My phone gets 188 mins on gfxbench
Screenies
http://imgur.com/D95ABh1
http://imgur.com/G8I2tcS
http://imgur.com/LcM3NRe
http://imgur.com/st0GBFP
http://imgur.com/fi9ho9j
Sorry for structure of thread...
Is this normal guys
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Click to collapse
Why should it say 1500 mah? The screen is not the only thing that drains the battery, you know that, right?
Running any benchmark will cause many battery drain. Don't do that. And that app you have to see the cpu temperature, 42º is not high for CPU. For battery it is.

dcop7 said:
Why should it say 1500 mah? The screen is not the only thing that drains the battery, you know that, right?
Running any benchmark will cause many battery drain. Don't do that. And that app you have to see the cpu temperature, 42º is not high for CPU. For battery it is.
Click to expand...
Click to collapse
I meant the total of the battery is 1000 mah usage. But is it normal for screen usage to be 60-70 percent usage i use on low brightness aswell

Guys... Please help

razakma16 said:
Guys... Please help
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Click to collapse
What help? Get a new battery or go away from Snapdragon devices. And, the screen usage is about right, because i don't know if you know, but the screen you are staring at is 1440x2560, or 2K, which is an insane resolution, and crammed in a 5.5 inch display at 538 ppi, it will consume A LOT. And the battery is just 3AH, which seemed much, but compared to the S5, with a 1080p display and a 2.6AH battery, the G3 has the worst SOT out of the 2014 flagship lineup.

西村大一 said:
What help? Get a new battery or go away from Snapdragon devices. And, the screen usage is about right, because i don't know if you know, but the screen you are staring at is 1440x2560, or 2K, which is an insane resolution, and crammed in a 5.5 inch display at 538 ppi, it will consume A LOT. And the battery is just 3AH, which seemed much, but compared to the S5, with a 1080p display and a 2.6AH battery, the G3 has the worst SOT out of the 2014 flagship lineup.
Click to expand...
Click to collapse
The 2K screen doesn't consume that much power. There are mods which allow you to lower the resolution, but you won't see much or any increase in battery life or performance (maybe in games it's going to be most noticeable).
razakma16 said:
Guys... Please help
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Click to collapse
Sounds like a bad battery. Quite possibly a reason why the other person decided to sell it in the first place. How old is the device that you purchases?
You can get an original replacement battery online for a few dollars. Just make sure you use a reputable vendor, like LG's official website.

engmia said:
The 2K screen doesn't consume that much power. There are mods which allow you to lower the resolution, but you won't see much or any increase in battery life or performance (maybe in games it's going to be most noticeable).
Sounds like a bad battery. Quite possibly a reason why the other person decided to sell it in the first place. How old is the device that you purchases?
You can get an original replacement battery online for a few dollars. Just make sure you use a reputable vendor, like LG's official website.
Click to expand...
Click to collapse
Its brand new thats why i'm worried and i have downloaded a few battery checking apps and they say battery health is good.
But when i add up usage it totals lower then the battery capacity, they total up to 1000mah at 50%, when it should be 1500mah
Do you have any benchmarks i can try so i can see if its working right or its just me.

razakma16 said:
Its brand new thats why i'm worried and i have downloaded a few battery checking apps and they say battery health is good.
But when i add up usage it totals lower then the battery capacity, they total up to 1000mah at 50%, when it should be 1500mah
Do you have any benchmarks i can try so i can see if its working right or its just me.
Click to expand...
Click to collapse
Oh so it's a brand new LG? How many hours of screen usage are you getting, what usage (web browsing, checking email or playing games?) and with what period of idle time.
Don't trust the numbers in the battery stats, especially in a new ROM. They are supposed to get better over time but I've found them to be wildly inaccurate even on months old ROM. I haven't really found an application you can benchmark accurately with.
But you compare with other (real) results on the foruns and rather you get the hang of what's the normal usage you should be getting out of a good battery.

Did you make a day without running any benchmark apps? What is your SOT? Standby time? Do you have location,wifi,bluetooth,NFC,mobile data on?
All of this matters. You shouldn't start right away with "I have problems with my battery" if you are running benchmark apps. Benchmark apps drains battery!
Wait a few days without running that apps and see how it manages. Another thing. The battery stats, the mah usage, not all of the things appears in the default android battery stats. And another thing, the battery value (the percentage of the battery), it is an approximation. Sometimes it could go up without charging, it is because it detected that has a wrong value. You could try charge your phone to 100%, usage it normally until 0%, until it turns off. Then charge it again to 100% and use it normally (don't discharge to 0% to many times, it just hurts the battery).

engmia said:
Oh so it's a brand new LG? How many hours of screen usage are you getting, what usage (web browsing, checking email or playing games?) and with what period of idle time.
Don't trust the numbers in the battery stats, especially in a new ROM. They are supposed to get better over time but I've found them to be wildly inaccurate even on months old ROM. I haven't really found an application you can benchmark accurately with.
But you compare with other (real) results on the foruns and rather you get the hang of what's the normal usage you should be getting out of a good battery.
Click to expand...
Click to collapse
I watched lord of the rings for 1 hour and 10 minutes (streamed from the internet not downloaded) and my battery went from 100% to 70%, brightness 0% and no gps etc... or background apps, Is this normal guys....

dcop7 said:
Did you make a day without running any benchmark apps? What is your SOT? Standby time? Do you have location,wifi,bluetooth,NFC,mobile data on?
All of this matters. You shouldn't start right away with "I have problems with my battery" if you are running benchmark apps. Benchmark apps drains battery!
Wait a few days without running that apps and see how it manages. Another thing. The battery stats, the mah usage, not all of the things appears in the default android battery stats. And another thing, the battery value (the percentage of the battery), it is an approximation. Sometimes it could go up without charging, it is because it detected that has a wrong value. You could try charge your phone to 100%, usage it normally until 0%, until it turns off. Then charge it again to 100% and use it normally (don't discharge to 0% to many times, it just hurts the battery).
Click to expand...
Click to collapse
OK i will try but it think you misunderstood i just want to run a benchmark to check i dont run them in the background constantsly now that would be

razakma16 said:
I watched lord of the rings for 1 hour and 10 minutes (streamed from the internet not downloaded) and my battery went from 100% to 70%, brightness 0% and no gps etc... or background apps, Is this normal guys....
Click to expand...
Click to collapse
Streamed from the internet with at least 1h10 SOT, that is not bad. That is almost 4 hours SOT. If you have 1h12 minutes SOT, that is 4 hours. It is good.

razakma16 said:
I watched lord of the rings for 1 hour and 10 minutes (streamed from the internet not downloaded) and my battery went from 100% to 70%, brightness 0% and no gps etc... or background apps, Is this normal guys....
Click to expand...
Click to collapse
Oh yeah, considering you even streamed the movie, it's signs of a good new and healthy battery. 3 hours of SoT with internet browsing is quite the norm, and 4 hours is on the up side.
I can barely get to 2 hours of SoT with my now aging battery.

engmia said:
Oh yeah, considering you even streamed the movie, it's signs of a good new and healthy battery. 3 hours of SoT with internet browsing is quite the norm, and 4 hours is on the up side.
I can barely get to 2 hours of SoT with my now aging battery.
Click to expand...
Click to collapse
There are a few things you can try if you are rooted to improve battery.

dcop7 said:
There are a few things you can try if you are rooted to improve battery.
Click to expand...
Click to collapse
It's not about the software side of things, it's about that my battery is old now, and that's why happens to old batteries, the just deteriorate.
Thankfully the LG G3 has an easily replaceable battery, and I have a replacement waiting for me. Not getting a phone on which you can't remove the battery..
And never found those apps like Greenify to really work, at least in the last few years of Android. The OS seems to be doing just of a good a job and I see no improvement in battery life. Maybe they help in cases with poorly written apps that are draining your battery in the background, but I don't see why would you use such a software in the first place.

engmia said:
It's not about the software side of things, it's about that my battery is old now, and that's why happens to old batteries, the just deteriorate.
Thankfully the LG G3 has an easily replaceable battery, and I have a replacement waiting for me. Not getting a phone on which you can't remove the battery..
And never found those apps like Greenify to really work, at least in the last few years of Android. The OS seems to be doing just of a good a job and I see no improvement in battery life. Maybe they help in cases with poorly written apps that are draining your battery in the background, but I don't see why would you use such a software in the first place.
Click to expand...
Click to collapse
There are other things. Try to disable assertive display. You can disable logd. Turn of VoLTE. I use greenify because the aggressive doze.

Screen on time

It's amazing how much we actually use our phones in a given day, especially when we watch "videos"! Rate this thread to express how many hours of screen-on time you can get on the OnePlus 7T Pro McLaren before depleting the battery.
Then, drop a comment if you have anything to add!

Here are my screen on time results with 60hz and FHD. Just experimenting with different settings to see the results. Honestly I don't feel battery is bad with auto resolution and QHD either I feel like this phone does very well on battery.

Not as good as the 6t but, it's pretty good.

Looking even more like the 6t screen on times now!

How do you guys set up your devices , so it can last so long?

vpfcb7 said:
How do you guys set up your devices , so it can last so long?
Click to expand...
Click to collapse
My last screen shot was wifi, lte, no 5g, fhd, 60hz, printing service off, find my device off and I believe that's it. Honestly I don't see a dramatic difference in screen quality with these setting either. It's noticeable but definitely not THAT noticeable and honestly it's worth it if you need your phone to last for long periods between charges.

lendawg said:
My last screen shot was wifi, lte, no 5g, fhd, 60hz, printing service off, find my device off and I believe that's it. Honestly I don't see a dramatic difference in screen quality with these setting either. It's noticeable but definitely not THAT noticeable and honestly it's worth it if you need your phone to last for long periods between charges.
Click to expand...
Click to collapse
I get 5- 6 hours of SOT. 60/ FHD, dark override/ wifi filter/ all apps are optimized, location only while using an app, 5bg is off. WTF else need I do? I can't root it. Thinking about returning it to TMobile cus i heard that 5 g chip is always on eating the battery.

vpfcb7 said:
I get 5- 6 hours of SOT. 60/ FHD, dark override/ wifi filter/ all apps are optimized, location only while using an app, 5bg is off. WTF else need I do? I can't root it. Thinking about returning it to TMobile cus i heard that 5 g chip is always on eating the battery.
Click to expand...
Click to collapse
Yes, it does. I m returning mine tomorrow

I was getting quite good battery life on 10.0.19 but battery has taken a pretty good hit since the 10.0.25 update. I may try factory reset to see if that helps.

I'm pretty sure people with bad battery live have 90hz on and 5g on. And so do I, I get about 4-5hrs sot in a whole day of usage, between WiFi and 5g .. light gaming, texting, Instagram, Facebook, messenger and some other apps.

pantmunu said:
I'm pretty sure people with bad battery live have 90hz on and 5g on. And so do I, I get about 4-5hrs sot in a whole day of usage, between WiFi and 5g .. light gaming, texting, Instagram, Facebook, messenger and some other apps.
Click to expand...
Click to collapse
The problem is the 5G modem is pretty much on all the time. Even if not in use. There isn't really any way to actually turn it off. (Unless you get really creative and make your own firmware...)

pantmunu said:
I'm pretty sure people with bad battery live have 90hz on and 5g on. And so do I, I get about 4-5hrs sot in a whole day of usage, between WiFi and 5g .. light gaming, texting, Instagram, Facebook, messenger and some other apps.
Click to expand...
Click to collapse
That is actually not entirely true, I have the European variant of McLaren without 5G modem I this is by far the worst SOT I ever experienced on an OnePlus device. And I have had them since the beginning. I can barely scrape up 4h - 4.5h SOT over an 24-48h time period
on a full charge cycle. Note I'm not even on stock kernel so I would expect SOT be up 8-10h without any bigger problems. What I'm trying to make out if my battery is bad or the complete phone, and if that would come to that I would return it to the seller in flash.
Batt stats and kernel logs show active drain between 8-10% per hour and idle drain to 1.5-2.5% per hour. Numbers don't say much to me however active drain seems very high to me. I know that the display consumes a lot for sure but I'm not really sure if this is too high or not.
I'm on FHD+ resolution but with 90Hz refresh rate and adaptive background light. To summarize it all, I'm hugely disappointed with my device in perspective of battery life. Feel free to drop comments or suggestions on what I can do. Perhaps give some figures on idle and active
drain if you have them.

kallekula33 said:
That is actually not entirely true, I have the European variant of McLaren without 5G modem I this is by far the worst SOT I ever experienced on an OnePlus device. And I have had them since the beginning. I can barely scrape up 4h - 4.5h SOT over an 24-48h time period
on a full charge cycle. Note I'm not even on stock kernel so I would expect SOT be up 8-10h without any bigger problems. What I'm trying to make out if my battery is bad or the complete phone, and if that would come to that I would return it to the seller in flash.
Batt stats and kernel logs show active drain between 8-10% per hour and idle drain to 1.5-2.5% per hour. Numbers don't say much to me however active drain seems very high to me. I know that the display consumes a lot for sure but I'm not really sure if this is too high or not.
I'm on FHD+ resolution but with 90Hz refresh rate and adaptive background light. To summarize it all, I'm hugely disappointed with my device in perspective of battery life. Feel free to drop comments or suggestions on what I can do. Perhaps give some figures on idle and active
drain if you have them.
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Click to collapse
Your battery life is pretty normal. Mine is around 5 to 9 hourss it's not the kernal but the rom and screen that uses up the bsttery
Install doze to lower ur idle time.

c01e said:
The problem is the 5G modem is pretty much on all the time. Even if not in use. There isn't really any way to actually turn it off. (Unless you get really creative and make your own firmware...)
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Did anyone try to select only 2G/3G/4G in Preferred Network type and then check the battery life/ drain?

General RAM boost, Much better battery

Hi folks
Since I disabled the RAM boost option, my battery feels so much better!
Version 11.2.8.8 Indian
Im with 75% screen brightning
QHD + 120Hz
Wifi - ON
4G - ON
Bluetooth - ON (Connected to device for 1 hour)
And my SOT is 4 Hour, 9 Min on 50% battery now.
7 Hours since last charged.
Finally some better battery life ...
Hope ONEPLUS will fix this problem. So we dont have to tweak settings for better battery life

I don't think it needs a fix. It's simply utilizing more RAM to prioritize and that alone will speed up battery drain. The OP9 Pro is meant for speed. Performance vs battery life is a constant battle. Try 50 percent brightness when your inside. Also do you have developers mode enabled

Developer enabled, yes, why?

You can make a few other tweaks to increase battery life. The four scale buttons you see can be brought down to .5 as well to save
Jomsha said:
Developer enabled, yes, why?
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Animation affect battery?

Of course. Everything impacts the battery. The question is how much do you want to lower your viewing experience to save battery? That question can only be answered by the user.

Creative_Ingenuity said:
Of course. Everything impacts the battery. The question is how much do you want to lower your viewing experience to save battery? That question can only be answered by the user.
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That's going to make such a negligible impact on battery life lol. If you think that's helping a noticeable amount, you're kidding yourself

I never said it would make a huge impact. I'm just adding things in that people do to Maximize battery life. I personally do not throttle my performance. I enjoy it how it is and to fully charge takes less than 30 minutes

Wish I could say the same. RAM boost on or off I still average six hours of SOT

Every little thing can add up to a better battery experience...

Animation OFF will give you some plus in speed too. I keep them off for years. It's usselles for me.

Question Real battery capacity

Is there a way to accurately check the battery capacity other than with AccuBattery and such apps? After 6 charges it's showing 93% capacity (2103mAh) for a brand new phone. This doesn't seem right. What are you guys getting?

It should be at least twice that capacity, probably a little higher being new. Most apps don't properly report statistics for dual-cell batteries, or if they do there's a setting you have to toggle to let it you know your device has a dual battery. I know Battery Guru has good dual battery support.
The other issue I've seen is if the app ever gets killed in the background it can throw off the numbers. Make sure you've disabled optimization for the app.

Same as @terlynn4 , it's because the apps aren't (for most of them) able to detect dual cells batteries. Technically, the OnePlus 9 Pro is having two cells of 2250mAh, so just configure manually your app to this (set the battery profile to 2250mAh, instead of 4500mAh) and you should be fine.

Jaxom84 said:
Same as @terlynn4 , it's because the apps aren't (for most of them) able to detect dual cells batteries. Technically, the OnePlus 9 Pro is having two cells of 2250mAh, so just configure manually your app to this (set the battery profile to 2250mAh, instead of 4500mAh) and you should be fine.
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Click to collapse
I almost agree, it will at least give some indication.

terlynn4 said:
It should be at least twice that capacity, probably a little higher being new. Most apps don't properly report statistics for dual-cell batteries, or if they do there's a setting you have to toggle to let it you know your device has a dual battery. I know Battery Guru has good dual battery support.
The other issue I've seen is if the app ever gets killed in the background it can throw off the numbers. Make sure you've disabled optimization for the app.
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Click to collapse
I know about that and I've set it up properly, but I'm worried how it's so low for a new device. 2103 instead of 2250. Or rather 4200 instead of 4500, that's not a negligible difference.

The battery life on this phone is atrocious. I know this contributes nothing to the thread, just had to say it.

Pain-N-Panic said:
The battery life on this phone is atrocious. I know this contributes nothing to the thread, just had to say it.
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What OS are you running? For me battery life is better than I expected. I got the phone after the A12 update so it was the first OS I used and was getting 6hrs of SoT over a 24 hour period by the time I was at 20% which surprised me as I'd heard it was a big disappointment in this regard.

Zesty59 said:
What OS are you running? For me battery life is better than I expected. I got the phone after the A12 update so it was the first OS I used and was getting 6hrs of SoT over a 24 hour period by the time I was at 20% which surprised me as I'd heard it was a big disappointment in this regard.
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I'm on the latest TMO update that just got on Android 12.

Pain-N-Panic said:
I'm on the latest TMO update that just got on Android 12.
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How much usage are you getting out of a single charge?

I get about 11 hours on a full charge and 6 hours of music while working lol , the fast charger also can be used for 5-10 mins gives you hella juice , have you used the power save mode from a full charge ? I've gotten about 16 hours while still using it for music