yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab S9 series] Village_Idiot:
Unfortunately, there are people who think their subjective experience is objective reality. I'm with you, I'm liking mine. Overall, it's much better than my old Tab S7.
[Samsung Galaxy Tab S9 series] sunking101:
The published stats attest to the S9 battery life being nothing like as good as the S7 and S8 when they were new. I don't know what you two have done to the batteries or software on your S7 and/or S8 but your subjective claims that the S9 has better battery life than the S7 and S8 are verifiably incorrect. I am not making subjective claims. I am stating facts. Also this thread is specifically about battery life and nothing else. It is not about "liking the device".
[Samsung Galaxy Tab S9 series] The Root:
They are different devices that do different things. I know you think you're doing some amazing apples to apples comparison, but you aren't. Also we can't live in 2 eras at once. We have access to the devices that are out now in the condition they are in. I have no idea what you think you're arguing. Enjoy your tablet or don't. It really doesn't matter to us and no level of arguing is going to make us worry about it like you are.
[Samsung Galaxy Tab S9 series] sunking101:
So if the processor was slower than on previous generations of the same device you'd be fine with that? If the speakers were worse you'd be fine? If the RAM was less you'd be fine? If the camera was worse than on previous generations of the same device you'd be fine with that too? I'm struggling to see why you're perfectly happy with the SOT being hours less than on previous generations of the 11" Galaxy tablet. This is a fact and is verifiable by reading online reviews of the Tab S7 and S8 by the big tech sites upon launch.

This is a forum to discuss the various joys and issues with our devices and this specific thread is about the battery life being worse than on previous generations of the same device. It's an extremely valid thread IMO as I consider battery life to be one of the most important factors when it comes to battery powered devices. If you disagree then that's fine, just maybe don't participate in this thread? There are a fair few things I love about the Tab S9 but battery life certainly isn't one-of them.
[Samsung Galaxy Tab S9 series] Village_Idiot:
I said it was a little better. I wasn't expecting it to be that much better. Your subjective experience is not objective reality.
[Samsung Galaxy Tab S9 series] sunking101:
Again, what I am saying is not subjective.

Forget that my 2.5 year old Tab S7 is giving me noticeably better battery life than my brand new Tab S9. That is subjective granted. However, if you look up reviews from the tech sites for the Tab S6, S7 and S8 from back in the day when they had just launched you will see that they quote much longer runtimes for streaming video and web browsing. Much longer. Phone Arena reviewed the 11" Tab S9 and the battery life for video streaming was 6.25hr. The battery life for web browsing was 8.06hr.

Samsung Galaxy Tab S9 Review: Now that's an iPad alternative worthy of your attention

Compact, powerful, and pleasantly versatile, the Galaxy Tab S9 is easily the best Android tablet you can consider. Despite the shortcomings, it's the one to get if you're not in the iPad camp.

www.phonearena.com

The 11" Tab S8 battery life whilst web browsing lasted 12.52hr which is almost five hours longer than that of the Tab S9. I mean, come on. It's not even close.

Samsung Galaxy Tab S8 review: A new standard for Android tablets

This is what a premium Android tablet should be

www.tomsguide.com

The battery life of the 11" Tab S9 is extremely mediocre. Most mobile phones last longer and yet you can fit a huge battery inside a tablet....so what the heck are Samsung playing at???
[Samsung Galaxy Tab S9 series] Village_Idiot:
It is subjective. If it was objective, then everybody, or nearly everybody who bought the Tab S9 is getting the same results as you. It seams Android Police got different results. He also acknowledged that his results are subjective and that results will vary.

Samsung Galaxy Tab S9 review: Premium, powerful, pricey

The Galaxy Tab S9 finally adds an AMOLED display, but with a higher price tag than ever, you might be better off with a midrange slate

www.androidpolice.com

"Are there any modern tablets on the market that fail to impress with their battery life? My experience with the Galaxy Tab S9 — with its slightly larger battery compared to last-gen — has been as excellent on this front as you'd hope. After my initial charge upon receiving the device, the Tab S9 lasted for nearly three and a half days before I was ready to plug it in, with over seven hours of screen-on time. My second cycle wasn't quite as long, though at nearly three full days with over six hours of screen-on time, I still don't have much to complain about."

"Obviously, how long your slate lasts on a single charge will really depend on what you're doing with it. My two main use cases — browsing the web and watching YouTube videos — aren't particularly intensive, but considering how I prefer to pump up the brightness, those keeping their displays a little dimmer should see even better numbers than mine."
[Samsung Galaxy Tab S9 series] sunking101:
I can get over 10 hours of SOT over 3 days with my Tab S7 but that's a subjective stat. I saw one reviewer state that the Tab S9 "only needed charging twice a week with regular tablet use". Lol, what the heck does that mean? However, continuous web browsing or video streaming on a full battery until it is depleted isn't subjective. It's a valid test that the better tech sites do and they are the only tests worth bothering about. The Tab S8 clearly slays the Tab S9 when it comes to battery life.
[Samsung Galaxy Tab S9 series] Village_Idiot:
Still subjective. Those are YOUR results because of YOUR usage. MY results are different because of MY usage. That is what subjectivity IS.

"Obviously, how long your slate lasts on a single charge will really depend on what you're doing with it. My two main use cases — browsing the web and watching YouTube videos — aren't particularly intensive, but considering how I prefer to pump up the brightness, those keeping their displays a little dimmer should see even better numbers than mine."
[Samsung Galaxy Tab S9 series] The Root:
So do us a favor and get a Tab S8 and leave us alone. Honestly, you're more annoying than useful or informational.
[Samsung Galaxy Tab S9 series] sunking101:
Lol. Battery drain tests done by some of the tech websites are not subjective. The 11" Tab S9 has massively worse battery life than the LCD-equipped 11" tablets that preceded it. If you're happy swapping hours of SOT in exchange for the 'deeper blacks' of an AMOLED display then that's great. I'm not. Samsung should have put in a more energy efficient display or a much bigger battery.
[Samsung Galaxy Tab S9 series] sunking101:
"Surprising battery weaknesses in the test We were somewhat surprised by the results of the battery measurement in the test. A battery with more capacity than the predecessor model, a theoretically economical OLED display and a processor with more energy efficiency - all this actually speaks for a good runtime. However, the Samsung Galaxy Tab S9 actually performs worse than the Tab S8 in terms of battery life. The battery test under workload is particularly striking. We simulated continuous app use with a Wi-Fi connection and fixed display brightness. The result: 08:56 hours of battery life. Considering that the Samsung Galaxy Tab S8 managed a full 13 hours, this is disappointing. In the second runtime test, a video is shown in a continuous loop. Theoretically, OLED displays should have an advantage over LC displays here because black surfaces do not have to be illuminated. In practice, the effects are usually minor, but we would have expected more from the Samsung Galaxy Tab S9 in this test as well. In fact, the runtime is good and amounts to 11:32 hours - 1.5 hours less than the predecessor. That is basically OK. But we cannot really explain the significantly weaker battery life. If we exclude the processor and display, the only remaining cause is poorer software optimisation. Despite everything, our battery score is "good", but we are not really satisfied. The battery supports fast charging and can use up to 45 watts of power. Thus, the 8,400 mAh battery can be charged in a brisk 01:44 hours. However, a corresponding power supply unit is not included in the scope of delivery, which Samsung now omits from almost all smartphones and tablets."

https://www.chip.de/test/Samsung-Galaxy-Tab-S9-im-Test_184904649.html
[Samsung Galaxy Tab S9 series] sunking101:
You're coming across like an Apple fan boy. This is a battery life thread containing factual information. If you're happy with your new tablet's massively mediocre battery life then that's fine but perhaps stay out of this thread because it seems to be upsetting you?
[Samsung Galaxy Tab S9 series] The Root:
I've hated Apple since 1984. I don't have to explain myself to you. What is your point? So you hate the Tab S9's battery. Do you want them to recall every tablet and upgrade it on your demand. It sounds ridiculous. I'd also think about who sounds upset on this thread...

Want me to email our Samsung contacts at work and see if they want your input?
[Samsung Galaxy Tab S9 series] Gareee:
I was expecting the same improvements on the Tab s9 series over the Tab s8 series as the s22 to s23 phone series.

There was a huge improvement in battery life of the s23u vs the s22u, and the Tab series also updated with the same screen upgrades and processor upgrades as the phones did.

Not sure why we aren't seeing the same 20-30% battery life leap as the phones got.
[Samsung Galaxy Tab S9 series] sunking101:
I'm hoping it's poor software optimisation and that we'll get an update that gives us more battery life...
[Samsung Galaxy Tab S9 series] Village_Idiot:
That is because the all versions of the S23 were already using AMOLED displays. The previous versions of the Tab S series were LCD displays, where the Tab S+ and Ultra series were AMOLED.

The newer AMOLED display in the Tab S9 requires more power. A firmware update could probably help. As Samsung gets more data from users, it can then tweak the firmware to be more efficient.
[Samsung Galaxy Tab S9 series] Gareee:
Actually, since the newer screens use the adaptive power use using less power for dark or black portions, the screen should use less power, not more.

But contrary, we now also have 120hz vs the old 60hz.
[Samsung Galaxy Tab S9 series] ricardod1:
Wow, after reading all the posts so far not once was really mentioned how someone uses their tablet. Yes, we can talk about better processor more efficiency battery test etc etc...

But in reality, I look at what I'm using my tablet for example, some days all I use it for is going online. I have my web browser open with 10 to 15 tabs. I have an excel spreadsheet open. I might even venture in playing a couple of dumb games like Alien Shooter.

Other times I want to use my tablet for watching Hulu or YouTube. TV or whatever social platform you're using to watch your streaming videos. In this case, I have found that the tablet does pretty much what everyone is talking about to some degree as I have not just watched videos for 6 or 8 hours. But have noticed a significant decrease in battery performance.

But in the scenario of using my tablet for just browsing online, having spreadsheets open having a bunch of other apps open I was able to last for 2 days and 14 hours.

But keep in mind that you also have to know what settings you have to engage or disengage to use less power. One big option is running in dark mode, not only the tablet itself but apps as well.
[Samsung Galaxy Tab S9 series] Village_Idiot:
I use mine for reading, email, light gaming, and occasional video streaming. That is why I am getting a little better battery performance. The OP streams videos and plays games all day. It is no wonder he has poor battery performance.
[Samsung Galaxy Tab S9 series] sunking101:
What? I haven't played a game since I was a teenager. All I do is web browse, watch You Tube and some email/Messenger. I get 10 hours or more of SOT from my 2.5 year old Tab S7 and barely 8 hours from my brand new Tab S9. The most I've had out of it was 8.5 hours. I got 11 regularly from my S7 when it was new.
[Samsung Galaxy Tab S9 series] Village_Idiot:
Ok. But for how long? Do you actually keep track of how long you watch YouTube? That is what is causing most of your battery drain.
[Samsung Galaxy Tab S9 series] sunking101:
I'm not sure you're quite understanding this.

I use my tablets in exactly the same manner and the S7 with the less efficient processor and 2.5 year old battery gives me better battery life than my brand new S9. My Tab S9 battery runtime stats adhere very closely to the few tech sites who have so far bothered to test the battery. One tech site was alarmed by the poor battery life and I have put links to these sites in previous posts.

The fact is that the 11" Tab S9 has mediocre battery life. It has the runtime of a typical mobile phone yet previous incarnations of this same tablet have had stellar battery life. It's a massive downgrade in that respect. Goodness knows what it would be like if I didn't have every app in deep sleep, background data off, bluetooth off, notifications off and NFC off etc! My Tab S7 still typically gives me at least 10 hours of SOT but what will my S9 give me when it's 2.5 years old? 6 hours? It's not good enough for the price paid.

With this processor and larger battery we should be getting much better battery life than we are. Yours can be no better than mine so I'm not sure why you're defending it so staunchly. It's a great tablet with mediocre battery life. For newcomers to Samsung tablets it's probably acceptable but when the S7 and S8 had such great battery life it's extremely disappointing. I expect upgrades in certain areas and definitely nothing to be worse than in previous generations. Battery life is a big deal and not an area that anyone expects to be worse. To be so badly worse, like hours down on previous generations, is shocking. I may actually end up sending mine back because of it. I'm hoping that Samsung release an update ASAP.
[Samsung Galaxy Tab S9 series] Village_Idiot:
I understand more than you think. Since you don't seem to want accept that YOU are also part of the equation, anything I (or anybody else) says is moot.
[Samsung Galaxy Tab S9 series] sunking101:
So if I'm responsible for the poor battery life on my S9 I must also be responsible for the stellar battery life on my S7...
[Samsung Galaxy Tab S9 series] sunking101:
Rather than being the saviour I hoped it would be, the August 21st update appears to have robbed me of a further 30 mins of SOT. I haven't once achieved more than 7.5 hours of SOT since I installed it.
[Samsung Galaxy Tab S9 series] Village_Idiot:
I don't know where you got this unrealistic expectation. I have yet to see anywhere Samsung claiming it was supposed have a significant battery life improvement. Especially since it's only a 4.76% increase in capacity over the Tab S7 and Tab S8.

If you are that disappointed return your tablet and go back to your Tab S7, or maybe get an S8.
[Samsung Galaxy Tab S9 series] sunking101:
I was never expecting an improvement. Nor was I expecting to lose 3+ hours of SOT over the previous models when they were new). I'm not sure why you guys are OK with that?
[Samsung Galaxy Tab S9 series] Village_Idiot:
So it is 3 hours now. Your OP was "slightly less." You keep saying it is worse. But don't say what you are doing. You say that it is "slightly worse." Then say you are getting 3 hours less. That is not slightly worse. Which is it?

You are expecting a huge difference in battery life, but the battery capacity has only increased by 4.71%.

Like I said, I am getting slightly better; about an hour or so. Nothing spectacular. Especially since the battery capacity was a mere 4.71% increase. If the Tab S9 had identical hardware as the Tab S7 with a 4.71% increase in battery capacity, then I would understand. But, the Tab S9 has a different display, new modems for WiFi 6, and other newer hardware. That plus usage habits all are factors in overall battery life.

Like I said previously. If you are that dissatisfied, send it back and get your Tab S7 back.
[Samsung Galaxy Tab S9 series] sunking101:
Slightly less NOW at the 2.5 year old stage and a few hours less when it was brand new before the battery deteriorated & updates. You can look up the S9 reviews and S7 reviews which clearly state the battery life of both tablets when new. Links are in this thread.

You simply cannot be getting an extra hour of SOT with the S9 unless there was something wrong with your S7.
[Samsung Galaxy Tab S9 series] Village_Idiot:
You mean like this review. Just over 5 hours of battery time.

Samsung Galaxy Tab S7 Review

The Samsung Galaxy Tab S7 aims to be the best Android productivity tablet on the market, but it only strengthens the case for Apple's less expensive iPad Air.

www.pcmag.com

Getting 7.5 hours is not bad at all.
[Samsung Galaxy Tab S9 series] sunking101:
Lol. You managed to find the only tech site who reviewed a faulty Tab S7.

This reviewer managed 13 hrs 16 mins of web surfing which is similar to what I used to get when mine was new. I still get between 10 and 11 hours of SOT every single battery cycle.

Samsung Galaxy Tab S7 review: The best iPad Pro rival yet

The Samsung Galaxy Tab S7 is the best iPad Pro competitor yet

www.tomsguide.com
[Samsung Galaxy Tab S9 series] sunking101:
From my very own Tab S7. Nobody's Tab S9 can get anywhere near these battery stats.
[Samsung Galaxy Tab S9 series] Village_Idiot:
Now show us what your Tab S9 is getting.
[Samsung Galaxy Tab S9 series] sunking101:
This is my last battery cycle on the Tab S9.

I have the same usage pattern and always get approx 7.5hrs SOT.
[Samsung Galaxy Tab S9 series] Village_Idiot:
You are comparing two different time periods. One is for 1 day 22h, the other is 6d 8 hours. How can you consider that an apples to apples comparison?
[Samsung Galaxy Tab S9 series] sunking101:
They're both for the Tab S7. I was just showing a sprint and an endurance test.
[Samsung Galaxy Tab S9 series] Village_Idiot:
Ok. Where are the results for the Tab S9?
[Samsung Galaxy Tab S9 series] sunking101:
In post #58
[Samsung Galaxy Tab S9 series] Village_Idiot:
Both are for 1d 22h, but your usage IS different. Hugely different.
[Samsung Galaxy Tab S9 series] sunking101:
My usage is always Internet, YouTube and newspaper apps. That's all I ever do. You don't expect me to literally recreate my usage of each app to the nearest minute? I could spam this thread with screenshots of my battery stats and the Tab S7 slays the Tab S9 every single charge cycle. It isn't even close.
[Samsung Galaxy Tab S9 series] Village_Idiot:
For it to be an apples-to-apples comparison. Yes.

To be honest, those are just snapshots; one from each device. To get a good idea of true usage. You would need to capture daily usage data for at least a week, two would be better. The more snapshots you take, the better data you have to analyze. Doing just one snapshot for each device doesn't really show the whole picture.
[Samsung Galaxy Tab S9 series] sunking101:
Yeah but I'm telling you, I get between 7:15 and 7:40hrs SOT

every single cycle

for the S9. I always have the same usage pattern. Maybe more browsing one time, perhaps more YouTube viewing another time but always roughly the same SOT. My Tab S7 with 2.5 year old battery gives me 8:30hrs to 11:30hrs every single cycle (approx 8:30hrs if I don't use it much per day & one charge lasts me all week, and approx 11:30hrs if I use it heavily over the course of a couple of days). The Tab S7 is a battery beast.

I am curious to know what your usual SOT with the Tab S9 is?
[Samsung Galaxy Tab S9 series] keijikage:
Try running dark mode in everything. (it's probably the only thing that will help at this point).

One of the pro's about LCD's is they have relatively static power consumption for different content, and power consumption scales with just the brightness. OLED power consumption will scale with both color and brightness, and my guess is that web browsing and news have a lot of white space.

It's a shame that OLED's carry such a power penalty.
[Samsung Galaxy Tab S9 series] Hmmmmmmm3:
Lol if you compare for example just Samsung internet, youtube, and daily mail online usage S9 is significantly more efficient:

samsung internet:

s7: 172 min, 23.8%

s9: 232 min, 8.0%

also something doesn’t add up, the battery drain percentage are all under single digits, it seems like something Else is draining your battery that’s not shown here.
[Samsung Galaxy Tab S9 series] sunking101:
Another 🤡 who can't bear to hear that the Tab S9 has worse battery life than the S7 and S8. It's not even close.
[Samsung Galaxy Tab S9 series] Hmmmmmmm3:
That’s a weird response but okay. I just decided to purchase an s9 and will give an update and see if that’s actually the case once it comes in in a week. (I’ll have my tab s8 in hand for a few days crossing over as a point of comparison)

Edit: I’ve seen another thread where the percentage doesn’t seem to match up either for the percentage used per app and the total percentage used. My guess is it’s either the Oled screen being significantly more inefficient (when dark mode isn’t enable, like in your case), or that the 8gen2 idle drain is higher on the tab s9 due to firmware bug that prevent it from entering lower freq state.
[Samsung Galaxy Tab S9 series] sunking101:
I don't use dark mode, no.

Have you installed a translation plug-in and read the review in German tech site Chip.de?

https://www.chip.de/test/Samsung-Galaxy-Tab-S9-im-Test_184904649.html
[Samsung Galaxy Tab S9 series] hmmmmm2:
Just got the tablet yesterday and indeed the s9 is running around 1 watt extra at idle compared to s8 (1.2watt vs 2.3watt). Wifi and screen brightness (below 20%) doesn't have tangible effect on the power consumption. I checked the cpu core freq with the toolbox app on both device and noticed that s9 actually ramps up the prime core quite frequently, alow with the A715 cores up to 2ghz. The s8 when idle doesn't exhibit this behavior as much (using mostly the A510 instead of the prime and performance core). Samsung needs to update their CPU scheduler since the ramp up is unnecessary so say the least. Un the other hand. Standard by over night shows the s9 much better than the s8. Dropping only 1 % vs 4 % on the s8 when both are connected to wifi.
[Samsung Galaxy Tab S9 series] hmmmmm2:
Another update, power consumption is more or less the same after a week of use, but screen on time feels a bit longer now with about 5 hours of browsing&YouTube going down by 45%. One weird thing to note is playing cod mobile for 30min only drops the battery by ~6% with 3 separate sessions, which is significantly better than s8 (~13-14%), meaning power consumption when gaming isn't significantly higher than browsing&streaming video :o
[Samsung Galaxy Tab S9 series] sunking101:
You say that 5 hours of browsing and YouTube drops your battery by about 45% so that would suggest you're heading for over 10 hours of SOT but I have never got more than 8.5 hours on mine straight from the charger. I'll agree that the first 5 to 7 hours of SOT are fairly decent but after that the battery tanks.

Yes gaming seems to drain the battery impressively lightly but for me a brand new premium tablet should deliver 10 hours of SOT without question when browsing or streaming video and thus I remain incredibly disappointed with the 11" Tab S9's battery life. A routine 7.5 to 8.5 hours of SOT is just not good enough in 2023 from an £800 tablet equipped with the latest tech. Samsung clearly needed to put a bigger battery in this thing because mobile phones can manage better stats than this.
[Samsung Galaxy Tab S9 series] hmmmmm2:
I do routinely get 9 hrs from 85% down to single digit percentage from mixed usage of note taking, just took a screen shot rn