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[Q] Battery life

I am a bit concerned about the battery life of the upcoming htc. The first reviews I have read about it on german blogs speak from 12 to 15 hours battery life under medium to heavy usage. Even though, one needs to remain cautious with these numbers as the software is not finalized, I wouldn't expect these to double when final.
The Incredible S has a quite satisfying battery life according to users experience. But the Sensation has a bigger screen, higher resolution, a full load of 3D effects and almost the same battery. I fear the battery life will be insufficient in that case, even though dual core is supposed to consume a little less.
Samsung has built a slightly bigger battery on his GSII and people seem to experience a very good battery life. But Amoled doesn't drain the battery when black is displayed and the whole UI has been designed in black for this purpose. So the Sensation will probably not be able to achieve such an autonomy.
Hopefully it will still go through the day under heavy usage. Otherwise I might gonna settle for incredible s instead.
Has anyone read other numbers somewhere?

eadred said:
I am a bit concerned about the battery life of the upcoming htc. The first reviews I have read about it on german blogs speak from 12 to 15 battery life under medium to heavy usage. Even though, one needs to remain cautious with these numbers as the software is not finalized, I wouldn't expect these to double when final.
The Incredible S has a quite satisfying battery life according to users experience. But the Sensation has a bigger screen, higher resolution, a full load of 3D effects and almost the same battery. I fear the battery life will be insufficient in that case, even though dual core is supposed to consume a little less.
Samsung has built a slightly bigger battery on his GSII and people seem to experience a very good battery life. But Amoled doesn't drain the battery when black is displayed and the whole UI has been designed in black for this purpose. So the Sensation will probably not be able to achieve such an autonomy.
Hopefully it will still go through the day under heavy usage. Otherwise I might gonna settle for incredible s instead.
Has anyone read other numbers somewhere?
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Click to collapse
This is how I see it. Multi-core cpu's theoretically are more power efficient. You spread work over both cores, if software is optimized, to allow for less "strain" on the cpu. From what I can tell they are "optimizing" their Sense UI to run on both cores which efficiently manages the amount of power is being used. This now gives you less power draw hence power is saved. The battery isn't as big as some devices, but in my honest opinion I believe you will get a little more than 12-15 but probably won't get up to double that. This is all based off of my own conclusions after reading several articles. I may be wrong and if you need to correct me feel free. =) All I will say is you probably won't have to worry about battery issues.

Buying the Nexus 5

Hi all I've come to a decision that buying the Nexus 5 is worth it, a perfect collection to my devices
The Snapdragon 800 Quad 2.3 got my attention and its pretty cheap
I would like to ask about the battery life and if there are any custom roms that improve it
Thanks alot

Hi,
For the battery life it will vary from each users, it depends on your usage and settings (screen brightness, synchro, GPS, etc...), for more details you can take a look here for example: Nexus 5 Battery Results. Some users have 7 hrs screen on time, others 3 hrs (plus the idle time to take in consideration) for example, like I said it depends of your use. If you are a gamer the battery life will not be the same as the user who use its phone only for SMS.
Again you will have different opinions (and people that claims that x rom or x kernel is the best for battery life, you'll have the same number of opinions as there are different roms / kernels and it will not help you more...), for some the battery life is great and for others it's terrible, etc..., I would say the average is a day for about 4 Hrs screen on time with "normal" (or "light" use, I mean not 1 hour of Dead Trigger) use. It will depend of what you will do with your phone?
The battery life is mainly on the user side, it's not x rom or y rom that will give you better or worse battery life (unless a big issue in the rom, but... or sometimes it's the Gapps that drain more than usual it's right). If you have a bad signal or a rogue app that give you a ton of wackelocks so higher battery drain, whatever the rom or the kernel you will use it will be always the same thing.
If you want improve your battery life, know what apps you have, how and what they do in background for example (to avoid wackeloks), you can underclock, etc...
Take a look here also about battery life and kernel: Nexus 5 Battery benchmarks.
And there is already a bunch of threads (and review) about battery life in the Q&A forum...

viking37 said:
Hi,
For the battery life it will vary from each users, it depends on your usage and settings (screen brightness, synchro, GPS, etc...), for more details you can take a look here for example: Nexus 5 Battery Results. Some users have 7 hrs screen on time, others 3 hrs (plus the idle time to take in consideration) for example, like I said it depends of your use. If you are a gamer the battery life will not be the same as the user who use its phone only for SMS.
Again you will have different opinions (and people that claims that x rom or x kernel is the best for battery life, you'll have the same number of opinions as there are different roms / kernels and it will not help you more...), for some the battery life is great and for others it's terrible, etc..., I would say the average is a day for about 4 Hrs screen on time with "normal" (or "light" use, I mean not 1 hour of Dead Trigger) use. It will depend of what you will do with your phone?
The battery life is mainly on the user side, it's not x rom or y rom that will give you better or worse battery life (unless a big issue in the rom, but... or sometimes it's the Gapps that drain more than usual it's right). If you have a bad signal or a rogue app that give you a ton of wackelocks so higher battery drain, whatever the rom or the kernel you will use it will be always the same thing.
If you want improve your battery life, know what apps you have, how and what they do in background for example (to avoid wackeloks), you can underclock, etc...
Take a look here also about battery life and kernel: Nexus 5 Battery benchmarks.
And there is already a bunch of threads (and review) about battery life in the Q&A forum...
Click to expand...
Click to collapse
Revontheus said:
Hi all I've come to a decision that buying the Nexus 5 is worth it, a perfect collection to my devices
The Snapdragon 800 Quad 2.3 got my attention and its pretty cheap
I would like to ask about the battery life and if there are any custom roms that improve it
Thanks alot
Click to expand...
Click to collapse
To add to what they said though, certain Kernels with certain Roms can HELP with battery life but it all boils down to how the user uses it. I can tell you that with my same usage on KitKat and Cyanogenmod 11 (CM11), I get better battery life out of CM11. I recorded about a 4 hour longer battery life on CM11 as opposed to default KitKat that comes on the device.
You should look into CM11, it's a cleaner, more effecient, more customizable version of KitKat.
Hope this helps!
Great job to Viking on explaining battery life/Roms

@viking37, I Saw on some reviews on the internet that it comes pre-throttled ( pre underclocked ) is this true

Revontheus said:
@viking37, I Saw on some reviews on the internet that it comes pre-throttled ( pre underclocked ) is this true
Click to expand...
Click to collapse
Underclocked, for the Nexus 5 , I never saw this, have you a link?
All Nexus 5 are clocked at max 2,26 Ghz, nothing less... It seems that there is different variants of the S800 (clocked at 2,4/2,5 Ghz) but the S800 in the Nexus 5 it's 2,26 Ghz (MSM8974AA).
Maybe you mean this: http://en.wikipedia.org/wiki/Snapdragon_(system_on_chip)#Snapdragon_800?

I have no issues with battery life ... I consistently get 14-20 hours of use with 3-5 hours of screen time or 2-3 hours of screen with 1-2 hours of voice.
Auto brightness, GPS on, nothing special.
Sent from my Nexus 5 using Tapatalk

Oh thank goodness, I saw some reviews saying it comes pre-throttled to save battery
Thanks

battery life is terrible but after some modification, it better a lot.
Sent from my Nexus 5 using Tapatalk

I get 24 hours and 5 to 6 screen time. Tweaked heavily with battery life in mind.
Its nearly as good as my Moto x.
Sent from my Nexus 5 using Tapatalk

HTC M8 vs Nexus 5 - Battery Life

Why does the M8 get much better battery life than the Nexus 5? Its battery is only 300 mAh larger and if anything, the Boomsound speakers, higher CPU clock speed and Sense 6 should sap some battery out of it. There must be something in the kernel that allows it to have such great battery life.

niral7 said:
Why does the M8 get much better battery life than the Nexus 5? Its battery is only 300 mAh larger and if anything, the Boomsound speakers, higher CPU clock speed and Sense 6 should sap some battery out of it. There must be something in the kernel that allows it to have such great battery life.
Click to expand...
Click to collapse
HTC uses tweaks, tricks and etc to make the battery more efficient
Nexus 5 has NOTHING for improvment
SO That's why :highfive:

Ehhhh I ain't buying that Story @t-shock. Sorry mate.

Magic is my guess.
But yes, the M8 far exceeds the N5 in battery. My M8 is setup the exact same (obviously keeping the M8's Dt2W feature enabled ) and it's average screen on time beats the N5 by 2 and a half hours.
But yes the battery is a bit bigger.... And yes, they must have made some things more cpu/battery efficient.

Its not because of tweaks OEMs tend to want things to be more stable and it to have better battery life but google doesn't really care google is more release it and create more bugs than they fix and if it weren't for our great custom ROM and kernel developers we would be stuck with google screwed up Roms

Thought this would be obvious. More efficient SoC. /thread
Clock speed being higher 0.1% of the time wouldn't be much of an added drain.

bblzd said:
Thought this would be obvious. More efficient SoC. /thread
Clock speed being higher 0.1% wouldn't be much of an added drain.
Click to expand...
Click to collapse
Then overclocking the Nexus 5 to 2.5 should help. Anandtech states that because tasks complete quicker, the CPU can drop to lower speeds quicker and save battery life. A dev should look into what optimizations HTC might have implemented into the M8. I would love to but I don't have any experience in that area.

S7 rooted battery life not too impressive.... how do I get it better?

OK, I have an att galaxy s7 g930a rooted phone. If imy out and about and not by an outlet, my battery is dead by around 6 pm. I'm not really a power user.
Immediately looking at better battery stats which it says since boot, system used 24%, and next is wake lock 6%, then kk launcher at 4%.
For battery optimization, I keep the phone in power saver mode. I also have juice defender ultimate and I run it in balanced mode. I have the setting unselected so the phone does not sync constantly for new emails etc.
I have power toggles and turn off GPS, mobile data, and WiFi when I'm not using it knowing all these transmitters drain the battery. And yet I can't get over 12 hours on a charge.

Try checking the cable n charger see if they are stock charger ..sometimes quick charge doesnt charge the battery properly ...u might need to replace battery if they r good

The battery on an s7 is built in.... not replacable.

It is replaceable u need to a good technician to open up the back using blow dryer type device n then swap the battery its pretty easy

I haven't had the phone a year yet. I really don't believe the battery itself is bad. Almost every situation like this I've seen has been an app draiming the battery... nothing physically wrong with the device.

What screen on time are you getting? What mobile network setting are you using/network are you on? 3G or 4G, if you're on a 3G network make sure it's set to 2G/3G in settings. Try installing gsam battery stats to see if you can identify anything unusual or something that's causing a drain.
Sent from my SM-G930F using Tapatalk

dorlow said:
I haven't had the phone a year yet. I really don't believe the battery itself is bad. Almost every situation like this I've seen has been an app draiming the battery... nothing physically wrong with the device.
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Click to collapse
I tend to agree with you. I've recently gone through seven S7's... I've exchanged the previous ones and am currently on my eighth device. Among these phones, it was only the international unlocked variant (SM-G930F) and the US unlocked variant (SM-G930U) that showed rather impressive battery life. I was often able to get 1.5 to 2 days of run time on a single charge from each of those models. The 930F was even better battery-wise than the 930U's, which weren't bad at all. Conversely, the batteries in the carrier variants that I've tried have seemed to deplete far too rapidly - similar to the situation you've described with your phone. My current S7 is an SM-G930P (Sprint variant) and its battery seems to last half as long (or less) than the unlocked S7 variants I've used.
The most generally disturbing thing for me about the GS7 is that there has been one or more significantly undesirable issues that seem exclusive to and inherently present among each of the model variant categories. At least this has appeared the case based upon the S7's that I've personally tested. For me, it seems there is no variant model of this device that's without seriously objectionable issues. However, finding some way to make the carrier-variant batteries last significantly longer would go a long way toward making other said issues more tolerable.

You could try greenify if you got xposed installed. There is another module too, but the name escapes me right now.

dorlow said:
OK, I have an att galaxy s7 g930a rooted phone.
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Click to collapse
From what i've read the root method using eng boot for snapdragon phones makes the cpu run at the highest frequency, so yes the battery life will suffer.

peachpuff said:
From what i've read the root method using eng boot for snapdragon phones makes the cpu run at the highest frequency, so yes the battery life will suffer.
Click to expand...
Click to collapse
Hmm, so the rooting method for the SD820 equipped S7's effectively overclocks the CPU? Perhaps it changes the multiplier?
The 4 cores on my unrooted SD820 equipped S7's have always idled at 307 MHz, and then spiked up as needed. Do the rooted SD820 equipped S7's idle at a higher clock speed? Or do they simply have a higher maximum clock speed - i.e., beyond 2.15 GHz? Either way, I can see how that would suck the battery down noticeably quicker.

clonk said:
Hmm, so the rooting method for the SD820 equipped S7's effectively overclocks the CPU? Perhaps it changes the multiplier?
The 4 cores on my unrooted SD820 equipped S7's have always idled at 307 MHz, and then spiked up as needed. Do the rooted SD820 equipped S7's idle at a higher clock speed? Or do they simply have a higher maximum clock speed - i.e., beyond 2.15 GHz? Either way, I can see how that would suck the battery down noticeably quicker.
Click to expand...
Click to collapse
It has to do with the governor, its apparently set to performance rather than interactive. Check what yours is set to, cpuid app can show you that.

peachpuff said:
It has to do with the governor, its apparently set to performance rather than interactive. Check what yours is set to, cpuid app can show you that.
Click to expand...
Click to collapse
Ah, that would be the CPU auto-scaling mechanism, if I'm not mistaken. I think mine's obviously set to interactive since the cores idle at 307 MHz. I'm guessing that if scaling were set to performance mode the cores would be running at full speed instead. And yes, that would drain the battery far quicker! And I sure DON'T need this 930P to drain its battery more rapidly than it already does. I'm currently playing with the debloater app to see if I can make some improvements tha way.

Snapdragon 820/821 vs 835

So I've ended up using multiple phones that had either the 820 or 821 chipset (S7, 3T, G6), and practically all of them - despite varying battery capabilities and other hardware differences - seemed to have the same general characteristics;
- Middle of the road screen on time. For instance, back when I had a phone with an 801, I could easily get 6-8 hours of SOT using a 3000 mah battery, whereas even the 3T, with a 3400 hour battery could barely reach 6 hours.
- Relatively high or inconsistent battery standby drain. Greenify and Doze seemed needed on practically every 820/821 I used just to keep the standby drain in check.
- Phone often running very hot - especially after extended use.
Now if you're saying those are traits that phones have always had, you're more or less right. I'm not necessarily trying to argue that the 820/821 were steps back for Snapdragons or anything (although I do think the whole need for 2K screens did effect overall efficiency). In any case, my general point is, these flaws - whether they're solely with the 820/821 or longstanding, seem to be corrected with the 835.
Granted, I've only owned one phone with the 835 - the S8+ - and while I haven't noticed any great jump in speed or straight up performance with the 835, I have noticed that practically all of those slightly annoying flaws mentioned above are nowhere to be found.
With a 35000 mAh battery, 8-9 hours of SOT is easily achievable, I've left my phone off the charger overnight to find the battery still at 100%, and my phone hasn't gotten nearly as warm as any of the phones from last year.
In conclusion, in my personal testing and usage, I've found the real benefits of the 835 to be mostly noticeable when it comes to efficiency, rather than performance (which, IMO, is a very good thing), and I suppose I'm kind of surprised that this really hasn't been covered at all by any of the major Android publications I've seen.

You are right, snapdragon 835 is a major improvement, but aren't these initial judgement, 835 hasn't aged till now..lets see how it keeps up with the performance, especially Samsung s8..