Database Users

110 hours on a single charge!

[Edit:] I've changed the title to reflect 110 hours. The original title and body of post reflected 100 hours, but since then I've added two more screenshots at the end of this post to show 110 hours (4 days 14 hours), and I added a (absolutely horrible) video to show that I'm running a standard battery (not an extended battery). NOTE: When I say the video is horrible, I mean it came out sideways, and is barely readable, and is a ridiculous 29MB in size. But the two added screenshots back up the readings and statements in the video. What follows below is my original post.[/edit]
Hey all, this is probably not any real record around here, but I wanted everyone to know I've just passed the 100 hour mark, running 100% uptime since the last battery charge!
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Notably, for at lease one-third of the total time, the phone was in an area of poor (or no) signal strength.
For this test, I had wi-fi, mobile internet and GPS all disabled...the only active radio enabled was the telephone voice radio, which was always enabled. I could (and did) recieve calls during the entire time (though I kept the conversations very short).
Here's how I've got my phone set up:
nfinitefx45's stock 2.1 ROM and Darch's Infinitefx_vUV_710 kernel, without freemem tweak (it's not the new vUV2 kernel).
SetCPU, set to 614mhz max and 19mhz min (245 max & 19 min sleep mode), with additional fine-tuning.
AutoKiller, with values I set individually for the different fields (didn't use any of the pre-set options...my settings are probably pretty close to "Agressive", except for the Content Provider value).
I use Advanced Task Killer to kill any apps that I'm no longer using, and I always have. But I've got it set to ignore SetCPU (because I've got a screen-off profile defined and enabled), and also set up to ignore AutoKiller (but I'm not sure if that's really necessary).
Notice the amount of time the phone spends at the different cpu speeds:
Because of the way I've got SetCPU set up, even though I have max speed set to 614mhz my phone rarely runs at that speed...the Powersave bias is set to 125, so most of the time that I'm demanding any real-time performance from my phone, it's actually only running at 537mhz. Likewise, even though screen-off max speed is 245mhz, most of the actual activity in that mode is at 122mhz or 160mhz, again due to the the Powersave bias setting of 125.
Also note that a great deal of time is spent at 19mhz, during both screen off and screen on states. Even so, I experience no noticeable lag, because the phone immediately jumps up to a faster speed as soon as any need arises (such as swiping between screens).
In case you're wondering why some cpu time is showing at 710mhz even though I have the max speed set to 614mhz, remember that I'm running the 710mhz kernel, so while the phone is booting it's running at 710mhz.
I must admit to being miserly in the use of my phone during this test, even though I burned a couple of percent battery downloading the ShootMe screenshot app last night (just so I could provide these pics). And I used EStrongs File Explorer to send the screenshots to my computer over the wi-fi so I wouldn't have to plug in the USB cable.
One more thing...I'm not done yet! I'm going to get another screenshot after my Saturday afternoon nap...hopefully I can get 110 hours out of a single charge.
Cheers!
[Edit:] Here are the two added screenshots that show 110 hours (4 days 14 hours), and the horrible video I shot to back up the fact that I'm using a standard battery.[/edit]

Thats crazy!
Sent from my evo

That's a lot of time on one charge. But as you said, not using it much. I think the 2+ hours of awake time is telling.
Sent from my HERO200 using XDA App

mgraham361 said:
That's a lot of time on one charge. But as you said, not using it much. I think the 2+ hours of awake time is telling.
Click to expand...
Click to collapse
The point of my post was to show how I've set up my phone to conserve battery when the phone isn't actually busy doing something.
Many forum members, in many different threads, have stated that they burn through battery at a rather disappointing rate even when they're trying to conserve juice. Darch went to the trouble of building up a batch of UV kernels to alleviate as much of that problem as he could (thanks Darch!). In large part, my post was basically explaining how I've taken advantage of that kernel, and nfinity's ROM (thanks to you too, nfinityfx45!), and careful tailoring of system and app settings to set my phone up so that battery drain during periods of inactivity is minimized.
Taken as a whole, the results indicate that my average battery drain is less than 1% per hour. In light of the fact that one third of that total time was spent trying to stay connected to a poor signal, I'm quite confident in stating that during times of good signal my bettery drain is significantly less than 1% per hour.
How many people can say they're realizing that kind of battery conservation with their Hero on an everyday basis? I've gone to the trouble of determining what works and what doesn't in terms of conserving battery, and reported on the setup and the results. That's all.
Another point that could probably be taken from the data is that, all other things being equal, I would probably get better battery life doing the same everyday stuff with my phone than the regular Joe who hasn't taken similar measures to minimize unnecessary battery drain on his device.
The bragging was just icing on the cake!
Edit: So sorry, I meant to also thank urushiol for the UV kernel!

This is pretty sick! Are you also using an extended battery?

i thought that auto killer is bad if you use an OC kernel?
thats hella right though
i've been waitin for someone to post somethin like this so i can maybe get 24 hours with moderate usage

infernosoft said:
This is pretty sick! Are you also using an extended battery?
Click to expand...
Click to collapse
Nope, I'm using the original battery.
The phone just now beeped at me, and the warning screen says I have no more than 9% battery remaining. In two more hours I'll have 110 hours on the battery. At that time I'll use my wife's Hero to take a video of my phone's battery usage screen, and then I'll pull the battery cover off of my phone in the video so you can see I'm running a stock battery...it says "HTC Innovations" on it.
I'll post the video after that.

macvalentine said:
i thought that auto killer is bad if you use an OC kernel?
Click to expand...
Click to collapse
AutoKiller is only bad if you're using one of the kernels with the built-in free mem tweaks.
That's why I'm not using a kernel with free mem tweaks...that way I'm free to use AutoKiller and set it up like I want. And I want a custom setup, not one of the preset offerings that comes with the app. I want to use agressive values for most of the settings, but I want to set the kill value for Content Provider to a low number, because if I use the preset value for Content Provider in the Agressive setting, it will kill the GPS antenna input to my tracking app when I'm on my mountain bike, because the phone's in my jersey pocket with the screen turned off...in such a situation AutoKiller presumes the content provider to be a background app and shuts it down if the kill value is set to anything but low...sheesh!

Okay, I've edited my original post to include a HORRIBLE video showing the standard battery being used, and I added two more screenshots showing 110 nonstop hours on a single charge.
So I'm going to finally put this project behind me now, and get back to the truly enjoyable business of actually using my phone again!
And a HUGE thanks to all the devs who've made it possible to get such incredible performance out of our phones!
If anyone cares to know why I decided to use any of the settings that I did, just ask and I'll be glad to talk to you about it.
Cheers, and a good night to all!

wow thanks for the info on autokiller
i can actually use it again! whoo!

CM7 Users Please Read!

I wanted to gauge battery life and stability on the CM7 Nightlys. So post your vote and then make a reply with the following info:
Which Kernel: Slayher, chad, tiamat...
Battery Size: 1300, 1500, 1800, 3500?
Current Batt. Life and Uptime: 50% and 5-1/2 hours
What is on? Wifi, GPS, Bluetooth, # of mail accounts

slayher
1500
46% and 5h35m
Wifi on, GPS on, 3 Mail accounts

Savaged-Zen - Smartass - 128/1113
Stock 1300 Battery
73% - 14 hours 16 minutes uptime
wifi, sync, weather (1hr), gmail(push), twitter(15mins), facebook(1hr)

g00s3y said:
Savaged-Zen - Smartass - 128/1113
Stock 1300 Battery
73% - 14 hours 16 minutes uptime
wifi, sync, weather (1hr), gmail(push), twitter(15mins), facebook(1hr)
Click to expand...
Click to collapse
you can overclock without random reboots with that kernel? i just flashed it today but used min 128 max 998 on smartass i will try 1113 too thanks for the tip bro

kidhudi said:
you can overclock without random reboots with that kernel? i just flashed it today but used min 128 max 998 on smartass i will try 1113 too thanks for the tip bro
Click to expand...
Click to collapse
In 4 days I've only had 1, so not that bad to me at all. Then again, it may just be the hardware, as all of our phones all respond differently to everything.

g00s3y said:
Savaged-Zen - Smartass - 128/1113
Stock 1300 Battery
73% - 14 hours 16 minutes uptime
wifi, sync, weather (1hr), gmail(push), twitter(15mins), facebook(1hr)
Click to expand...
Click to collapse
wow, thats incredible...
I don't think I have ever had close to that. You must live right under a wireless tower or something...

I charge frequently, so I don't have a lot of long runs from which to take data, but this past weekend I decided to see how long I could run my Inc using its current setup. I keep things switched off unless I'm using them (like GPS, BT, etc) and at night when I go to bed, I turn off mobile data. This allows me to still receive calls in the event of a late-night emergency (unlike airplane mode). I don't need my phone to stay up-to-the-minute with emails and such while I'm asleep.
byrong said:
Stock HTC 1300 mAh battery - still had 7% left today after running more than 42 hours on a standard (non-bump) charge.
Usage was a bit lighter than normal, but I still made a number of voice calls, watched a couple episodes of my favorite shows, etc. So it's not as if the phone was just sleeping the whole time.
This was using Chad's 2.6.37 kernel (Feb 11 version) and SetCPU profiles
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Click to expand...
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As you can see from my screen-on / wake time in those images, I'm not a heavy user of my phone. People who are playing tons of games and constantly syncing social apps can't expect to get anywhere near the battery life as lighter users. Custom kernels and clock speeds can only go so far.

I'm at 27% w/ 9h15m now

Which Kernel: Chad
Battery Size: HTC 2150
Current Batt. Life and Uptime: Normal Life is about 10-14 hours
What is on? GPS is always on, 3G is on except for the 3-5 hours at home in the evening when WiFi is on instead, 1 to 1.5 hours of Bluetooth, 3 gmail accounts in the gmail app.
I also use both Twidroyd syncing every 15 minutes for 1 twitter account, and Tweetdeek syncing every 30 minutes for 1 twitter, 1 facebook, and 1 foursquare account, Droidin syncing every 12 hours, and Scanner Radio running in the background...

I'm thinking my other battery is junk. I bought it off ebay as a 1750, supposedly that means its 1500. I think even if it is 1500 its not as high quality as the stock, so I am going back to stock until my new battery comes in.

Stock battery, incredikernel with smartass, .92 hboot, .19 radio
3g on, heavy internet and xda app, battery 27% after 9 hr 1 min.
Sent from my ADR6300 using XDA App

Which Kernel: Chad Incredikernel.
Battery Size: 3500 mAh Seidio
Current Batt. Life and Uptime: 2 minutes. Freshly installed CM7 #3. Before CM7 #3 got 2 days 12 hours.
What is on? Wifi, GPS, bluetooth, 1 e-mail, 1 gmail, auto brightness. Everything syncs in 15 mintue intervals.

Which Kernel: Invisiblek
Battery Size: HTC stock battery (1350 I think)
Current Batt. Life and Uptime: Normal Life is about 3-6 hours
What is on? GPS is always on, 3G is on, 3 gmail accounts in the gmail app.
I am down to 26% after 2h and 26m.
Tasker seems to suck most of my battery life (25-35%).
I dont play many games or surf the web so I dont know why this is happening. I used to get between 12-16 hours on CM6 but I ran juice defender which I think helped a lot. My tasker profiles are triggered by location and I think that when I am indoors it has my gps running, but looking at the battery info this does not seem to be the case..

Which Kernel: Slayher
Battery Size: 1800
Current Batt. Life and Uptime: 54%; 10 hours up
GPS on but not used; I used 3g the whole time. 1 mail account, weather/news widget updating and probably some other stuff too

GatorsUF said:
wow, thats incredible...
I don't think I have ever had close to that. You must live right under a wireless tower or something...
Click to expand...
Click to collapse
no, i live in the ghetto of jersey city. Unless "timberland boots on the power lines" qualify as a wireless tower... lol

Stock Battery
Incredikernel (Chad's 2/22/11 build)
62% after 7.5hrs on battery (light use throughout the day)
GPS, 3G/Wifi, 2 gmail accounts

Ke1evraTi said:
I am down to 26% after 2h and 26m.
Tasker seems to suck most of my battery life (25-35%).
Click to expand...
Click to collapse
Holy crap - that is completely unacceptable.
Not only is that awful battery life, but Tasker should not be using that much power. I use it a lot and have never once seen it get close to that.
Ke1evraTi said:
My tasker profiles are triggered by location and I think that when I am indoors it has my gps running
Click to expand...
Click to collapse
Sure sounds like it: I can't think of anything else Tasker does that would suck up that much power. I would suggest you refine your location profiles to use non-GPS methods (such as the Wi-Fi Near state).
If Tasker is trying to lock down a GPS location and you're indoors (or somewhere else where GPS reception is poor), that is a sure fire recipe for bleeding your battery.

byrong said:
I charge frequently, so I don't have a lot of long runs from which to take data, but this past weekend I decided to see how long I could run my Inc using its current setup. I keep things switched off unless I'm using them (like GPS, BT, etc) and at night when I go to bed, I turn off mobile data. This allows me to still receive calls in the event of a late-night emergency (unlike airplane mode). I don't need my phone to stay up-to-the-minute with emails and such while I'm asleep.
As you can see from my screen-on / wake time in those images, I'm not a heavy user of my phone. People who are playing tons of games and constantly syncing social apps can't expect to get anywhere near the battery life as lighter users. Custom kernels and clock speeds can only go so far.
Click to expand...
Click to collapse
What app is that

Keyboards said:
What app is that
Click to expand...
Click to collapse
It's just the built-in battery info in CM7
Settings > About phone > Battery Use
That will show you the small plot with app detail below. If you then press the plot, you get to the enlarged view of it, which also shows signal/gps/awake/screen/charging

GatorsUF said:
slayher
1500
46% and 5h35m
Wifi on, GPS on, 3 Mail accounts
Click to expand...
Click to collapse
Goes to show you what a warn-out crappy ebay battery does for you...bought a "1750, found out its more like 1500. Also turns out it wears out after a few months...bad" That said OEM 1500 on the way.
slayher
stock 1300 mAh
74% 6h 8m
Wifi, GPS, same as above...

Battery after 2.3.4 and rooting

So I've rooted my first android phone yesterday!
I've noticed the battery is a bit better.
My battery is down to 67% after 1 hour and 23 mintues of display turned on. I've barely installed anything on the phone.
Is this okay? Should it be better?
Another thing: is there a way to "underclock" or reduce the voltage and save battery like that?
I want to get as much out of the battery as possible.
Thank you

33% drain in that time is pretty poor, I'd expect no more than 10%, but ideally less.

The phone automatically underclocks when youre not using the phone. I had system monitor installed and noticed that when im not doing anything on the phone, the processor goes to 200mhz, and as soon as i click around it jumps to 500 800 1200mhz depending on use.
As for your battery issue, i noticed some apps keep your processor busy at 1200, and then your battery drains even with the screen off. And no thats not normal, in one hour it should at the most go down to 90% on idle. The battery is actually impressive.
And sometimes, when you're on 3g networks and the signals are low, your phone will still drain the battery. And you will notice the back of the phone heating up, oth from running the processor at 1200mhz and using 3g
Sent from my GT-I9100 using XDA App

Rooting has nothing to do with battery .
jje

My friend tell me root will cause battery run out faster, is that true?

No root is gaining administrators rights to a lower level of the OS .
jje

It's not 1:26 of idle, it's of screen time use.
I've got in my funning services stuff like, email, social hub, music, google+, juicedefender, google maps. Could any of these be draining my battery?
How can I keep some of these apps from not being in my running apps?
For instance, when I force close the google maps, it turn back on after a few seconds.

Google maps and gmail app never bugged me, but i did have issues with social hub and email. Use to drain my battery, so i just signed out because there was no way to stop the background services. Besides that i always have gmaps, gmail, gtalk, go chat for Facebook, Facebook app, whatsapp running in the background and no issues.
Sent from my GT-I9100 using XDA App

Here are a few screen shots that I took with the battery and screen on stats. Can anyone tell me if it's normal or if I've still got a battery issue?
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Do you set the brightness to full often?
Sent from my GT-I9100 using XDA App

Set automatic at the screen menu.

No, my brightness is almost always on the lowest setting. I turn it on fully only when I am in direct sunlight and need to use the phone for browsing etc (which doesn't happen often, mostly calls which I can do with minimum brightness).

I dont really know where the problem is, but it doesn't sound normal, the timing you say you are getting. Try to keep a black back ground and dark themes ( because in Amoled displays although low power consumption they use more energy to display white and colors rather tha black). And ley your phone turn off with low battery and charge it to full without disconnecting, to complete a cycle for better efficiency
Sent from my GT-I9100 using XDA App

so 1.5 hrs for 1/3rd battery usage?
This means you'll get about 4-4.5 hrs of screen usage (assuming normal drainage during screen-offs). This is normal I would say.
On my undervolted phone, I usually get about 5 hours of display time + about 10-12 hours of screen-off time which carries me through the day quite easily.
You can Undervolt your phone using Tegrak's app. More on that here.
http://forum.xda-developers.com/showthread.php?t=1101355&highlight=tegrak
Also, you can freeze system apps etc that you don't use by checking this list (using Titanium Backup). (Credit to shanume)
https://spreadsheets.google.com/spr...SENVeXlqUm5vV0E&single=true&gid=0&output=html

What's your phone carrier?
If your are in Japan, You need to configure build.prop.
If your not in JP, I don't know.. Try flight mode. or running without SIM.
so that you can check if the issue related with signal or not. at least...
Sent from my HTC Desire using XDA App

I'm not from Japan, but you guys make it sound like something is wrong.
Is there an app that can monitor the usage so I can post results somehow?
Maybe monitor it for all running apps etc?
I did this little test yesterday:
I played a video on my phone (from the SD card) for 20 min with no sound. It took down around 4% of the battery. It was a 720p (1.4GB for 50 min).
Is that normal?
Edit: Just tested it again: 30 min of 720p video, with max volume took down from 25% to 17% (so 8% battery for 30 min 720p video from SD card).

matanc1 said:
I'm not from Japan, but you guys make it sound like something is wrong.
Is there an app that can monitor the usage so I can post results somehow?
Maybe monitor it for all running apps etc?
I did this little test yesterday:
I played a video on my phone (from the SD card) for 20 min with no sound. It took down around 4% of the battery. It was a 720p (1.4GB for 50 min).
Is that normal?
Edit: Just tested it again: 30 min of 720p video, with max volume took down from 25% to 17% (so 8% battery for 30 min 720p video from SD card).
Click to expand...
Click to collapse
Again - both 4% for 20 mins and 8% for 30 mins sound normal. You can post these numbers on the Litening Rom thread (quick link in my signature) and other users can confirm.

this is poor... not sure what the hell original ROM doing with you.. in case you dont mind you might give it a shot to try litening or criskelo ROM..

aks1447 said:
this is poor... not sure what the hell original ROM doing with you.. in case you dont mind you might give it a shot to try litening or criskelo ROM..
Click to expand...
Click to collapse
And what battery drain do you normally see if you play a video for 30 mins?

I'm using VillainROM 2.0 if I didn't mention it before

Battery life increase

A few days back I complete a full charge of my galaxy and I went to bed. In the morning I checked my phone to see if I had new messages and to my surprise, over night, my battery had lost only 4 percent of its charge for a total of 7 hours and a half after I unplugged it. This is the first time I see such little battery usage overnight since I've upgraded to gingerbread. At first I thought it was something random because I haven't installed, uninstalled or changed, in general,anything. But after awhile I remembered that in fact I had change something. The change I have made was not on the phone. I've removed the duplicates using the new web interface of gmail and then let the changes synced-downloaded to my phone. I Have automatic sync, radio data and wifi always on and also I have an exchange account configured and i'm using viber and facebook messenger app (all these apps are configured to use push functionality).
Sent from my GT-I9000 using XDA App

That is better than having a breakfast in bed! wish I had such a.morning surprise!
Sent from my GT-I9100 using XDA App

Happens on mine too, But not too often. Sometimes.
BUMP!

Happens on mine too

mine
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well such night-drain is normal - and should be even less visible
as for stupid pics

samiulislam16 said:
mine
Click to expand...
Click to collapse
Notice how when your screen is off, your phone is still awake? That means it's not idling at a low CPU frequency, but instead performing battery-draining tasks—essentially, something is keeping it awake. Something is causing 'wakelocks'. That should give you enough to google for a solution.
Fix that and you'll see a dramatic improvement in battery life, like easily doubling that.

have you noticed the uptime maybe???
have you noticed the wake time has no inpact on usage ???
anyways you want to improve 7 DAYS 13 HOURS DRAMATICLY
are you sure you know what youre talking about =)

$omator said:
have you noticed the uptime maybe???
have you noticed the wake time has no inpact on usage ???
anyways you want to improve 7 DAYS 13 HOURS DRAMATICLY
are you sure you know what youre talking about =)
Click to expand...
Click to collapse
Jesus, I thought that said 7h. 7 days? I'm inclined to believe that's photoshopped. I seriously doubt an i9000 can acheive 7 days while the phone is awake for over 50% of the that time. I can't see it—at all.
The majority of users with appreciable battery life achieve 1% an hour loss with the screen off, phone sleeping. That would bring you to 4 days with zero usage, and certainly not much (if any) awake time. If you were to assume 50+% awake time, you are not going to hit 4 days—let alone 7.
Tell me your secret, otherwise I ain't buying.
EDIT: Well, the 'awake' and 'screen on' sections seem to align properly with the graph. Hmm... so what's the secret? A 5000mAh battery?

that 'wake' indication does not mean that phone aint in deep sleep (under 100Mhz state)
probably indicates that some tasks are running in the background not waking up the phone
i do not use percents when i talk about juice used by phone
look for mA in battery monitor widget and i see 2-5 mA every minute
look that screen is off for few days straight, probably all time on 3g with any sync deactivated
wifi the biggest drainer also off, same must be with bt,gps and rotation
phone was probably used for few phonecalls and smses with cpu downscalled to 100Mhz locked
this ways you can easy go for days

$omator said:
that 'wake' indication does not mean that phone aint in deep sleep (under 100Mhz state)
probably indicates that some tasks are running in the background not waking up the phone
i do not use percents when i talk about juice used by phone
look for mA in battery monitor widget and i see 2-5 mA every minute
look that screen is off for few days straight, probably all time on 3g with any sync deactivated
wifi the biggest drainer also off, same must be with bt,gps and rotation
phone was probably used for few phonecalls and smses with cpu downscalled to 100Mhz locked
this ways you can easy go for days
Click to expand...
Click to collapse
I thought the entire purpose of the awake thing was, you know, to have a purpose. So when the battery history section shows the phone as being awake, it doesn't necessarily mean it's awake? Great. That simplifies things.
I can't lock my phone on 100mhz, it instantly freezes. If I could, I suppose I could see the 7 day mark. Either way, I'm shocked that the awake thing reads about 50%. From owning this device, I definitely thought it only showed awake when it was awake. I have never, ever seen otherwise on my device. For example, my phone is set to enable 3G/Wifi and check emails every 15 minutes while the screen is off. On my battery screen this morning, it showed my phone waking up every 15 minutes for the entire night—and it never showed it waking up at any other time.
But what do I know, I use % to talk about battery.

i realy do not know what does that "wake" mean what state is that describing
i am on stock kernel, with no-frills cpu i can change the mhz to whatever value i like. for example i use 3g with phone locked on 100Mhz and i can listen an aac stream for a whole day (still 3g means no incomming calls when i use it), changing to umts means more battery usage but i can recive calls
with 100Mhz phone is very laggy, with 200Mhz gives a bit lag and much less battery is used - and if incomming call i can take it wo problem
lecing umts and 1Ghz would mean few hours drainage, with 3g and 100Mhz i can listen to stream for hours
if you would look more on mA mV mAh data you would understand why those % means nothing. especialy that sometimes bat stats gets messud up completley, with a result of like 50% drop after reboot so after that % goes up untill proper level
as for sync, i got autosync with data connection always on still i can get few % during night

$omator said:
i realy do not know what does that "wake" mean what state is that describing
i am on stock kernel, with no-frills cpu i can change the mhz to whatever value i like. for example i use 3g with phone locked on 100Mhz and i can listen an aac stream for a whole day (still 3g means no incomming calls when i use it), changing to umts means more battery usage but i can recive calls
with 100Mhz phone is very laggy, with 200Mhz gives a bit lag and much less battery is used - and if incomming call i can take it wo problem
lecing umts and 1Ghz would mean few hours drainage, with 3g and 100Mhz i can listen to stream for hours
if you would look more on mA mV mAh data you would understand why those % means nothing. especialy that sometimes bat stats gets messud up completley, with a result of like 50% drop after reboot so after that % goes up untill proper level
as for sync, i got autosync with data connection always on still i can get few % during night
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I'm impressed! I've set my clock to 400 Mhz before, and the phone was surpsingly usable (little lag here and there), but 100 and 200? That's remarkable. Anytime I set my max cpu frequency to 100 Mhz the phone instantly freezes; if it doesn't, it will when I shut the screen off.
Do you actually use your phone at these clock speeds? You said you can stream music for hours. Do you? That is truly impressive. I'll have to try this.
And yes, I know a decent amount about batteries. When I got my first Android phone I was obsessed with improving my battery life. I just feel that percentages are easier to understand for people, so I use them more often. Clearly I have a thing or two to learn from you though, haha.

at 100Mhz phone can vlearly perform one task =)
i was suprised that the aac stream was playing but it was
surley thats not freq for everyday use ;]

$omator said:
at 100Mhz phone can vlearly perform one task =)
i was suprised that the aac stream was playing but it was
surley thats not freq for everyday use ;]
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Click to collapse
Certainly, haha. That's impressive. I'll have to remember to underclock my device when playing music for hours. That would probably help the battery quite a bit. Thanks for the ideas!
EDIT: 800 thanks, congrats!

Ok. Have a nice day all. Some of the things I read here doesn't make sense. For example: underclocking the phone as low as 100 mhz, a single task, which in fact uses the cpu and not some other hardware component, will take x10 the time to complete using 100 percent of the cpu. The power usage will sky rocket because the reduction of the operational voltage of the cpu while underclocking it is not even 30 percent of the voltage on 1 Ghz.
The reason I created this topic is to find out if someone had observed such a behavior and, if possible, to help folks with power usage problems. Because they've passed a few days since, I can tell you from the battery usage graph that my phone while idling it wakes up less frequently and I can see these periods lasts not so much time as before... I believe this improvement in power usage is relevant to the way google related services wake up the phone following the automatic sync 'schedule' in order to sync the phone with the google web
Sent from my GT-I9000 using XDA App

milro1970 said:
... For example: underclocking the phone as low as 100 mhz, a single task, which in fact uses the cpu and not some other hardware component, will take x10 the time to complete using 100 percent of the cpu. The power usage will sky rocket because the reduction of the operational voltage of the cpu while underclocking it is not even 30 percent of the voltage on 1 Ghz.
...
Click to expand...
Click to collapse
you are wrong
power consumption (P) of any processor
is proportional (factor K) to voltage squared (u^2)
multiplied by clock frequency (f)
so: P = K * u^2 * f
for example:
1GHz: u = 1250mV
100MHz: u = 900mV == 1250mV * 0.72
100MHz : f=10^8 ; P_100M = K * (u*0.72)^2 * 10^8
P= K*u^2*0.518*10^8
1GHz: f = 10^9; P_1G= = K * (u)^2 * 10^9
P= K*u^2*10^9
task duration with 100MHz clock is 10 times longer than with 1GHz clock
and Energy (Work W) = Power * time
W_100M = P_100M * t * 10 = t*K*u^2* 0.518*10^9
W_1G = P_1G * t = t*K*u^2* 1*10^9
what do you see ?
energy reduction W_100M / W_1G = 0.518
it's almost half the energy than using 1GHz when reducing voltage by 28%
brgds, tiwag

You are absolutely right. I have not done my homework. Thanks for giving me the chance to actually learn something
Sent from my GT-I9000 using XDA App

[RESEARCH] Zenfone 5 1.2Ghz Screen On Time

As the title said, I'm gathering some information about screen on time (SOT) of Zenfone 5 1.2Ghz (from 100 to 1-5 percent)
I want to see how my battery is after years by how much time it can handle now. Hope you guys help me.
In comment section, please including your SOT plus:
- What rom are you using? (Kernel version if can)
- Most used network: Wifi or Cellular
- Network setting: Always on or Never (Manually)
- App ram usage (Running Service in Setting/Battery or Develop Options)
Thats all I want to know for now.
Thanks!

Using stock rom Kitkat newest version, cause it uses much less battery!
I mostly use more of the Wi-Fi on always on
what is mostly using my ram is the screen ( brightness) and android
I will send more information about RAM usage later, my phone is recharging

Using 1.6ghz variant.
rom- resurrection remix nougat. but channging of roms didnt had any great impact
only wifi always on.
ram- 40-50% or below free.
sot i get varies from 2hr- 3hrs. only texting and light stuff gives around 2hr 40mins.

im using latest kitkat on my 3 years old zenfone 5 single sim variant.
this one with 100% cpu usage all time + [ full screen brightness+ bluetooth + wifi+ gps on ] from 100% to 5%;
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This one has only wifi on with full screen brightness 100% to 5%
Click to expand...
Click to collapse

zeetsu said:
im using latest kitkat on my 3 years old zenpone 5 single sim.
this one with full cpu usage + [ full screen brightness+ bluetooth + wifi+ gps on ] from 100% to 5%;
This one has only wifi on and full screen brightness 100% to 5%
Click to expand...
Click to collapse
How long screen on time did you get? That's quite impressive battery graph with wifi and gps always on.

nheolinkin said:
How long screen on time did you get? That's quite impressive battery graph with wifi and gps always on.
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Click to collapse
Screen was always on in both tests. i used battery drain app to make screen always on with full brightness and wifi in second test and i get 3h45m screen time.
in first test i pushed cpu 100% and activated all gps/bluetooth/wifi etc and i get 1h53m screen time. but phone was really overheated and i scare to do it again (it was burning my hand)
actually i was shocked myself when i saw 4 h screen time when i used my phone to only read ebook all day in home with half brightness and i decided to test my phone. Results were amazing i agree, i hope it keeps that way for one more year.
i tested overnight battery usage and it dropped to 85% from 100% within 7 hours with wireless open while android sleep. i guess it might be better to close all network overnights

zeetsu said:
i tested overnight battery usage and it dropped to 85% from 100% within 7 hours with wireless open while android sleep. i guess it might be better to close all network overnights
Click to expand...
Click to collapse
I wish I still kept the screenshot on Mashmallow to show you.
wireless is not the reason but the google play service. After disable a list of unneeded services, I let wireless enable all the time, gmail and other notification still can be recieved and battery drained 1% per hour (screen off). For specifically, after 6 hours over night, it will drain 6%.
screen on time is normally 3 hours but of course I have to tweak a lot to get this result. If not, battery just drains like hell.

nheolinkin said:
I wish I still kept the screenshot on Mashmallow to show you.
wireless is not the reason but the google play service. After disable a list of unneeded services, I let wireless enable all the time, gmail and other notification still can be recieved and battery drained 1% per hour (screen off). For specifically, after 6 hours over night, it will drain 6%.
screen on time is normally 3 hours but of course I have to tweak a lot to get this result. If not, battery just drains like hell.
Click to expand...
Click to collapse
i tried to close wifi yesterday , as you mentioned it does not effect the drain.
3 hours sot on marshmallow is great but unfortunately i cant use custom roms cuz i need Gps occasionaly and my simcard often keep loosing signal on thoose . i am considering to get a xiaomi mi or redmi phone by next year but until that i had to use asus zf5 with kitkat 4.4.2 and 3-3.5 sot is best i can wish for.