A lot of people(even franco) said downclocking phone when the screen is off consume more battery than leaving the same frequencies because of frequencies jumps. I can understand that, if when I'm running I keep changing my speed I consume more energy. But if I run for 2 hours at 10 km/h and then I slow doen to 5 km/h for 5 hours I consume less energy than if I kept running at 10km/h for 2+5=7 hours. So, wouldn't it be better to downclock when screen is going to remain off for more than ten minutes? I'm a noob and I'm sure that kernel developers(or developers in general) can make me understand better
First... human metabolism is a bad comparison >.<
Short answer is that 480 Mhz and 240 Mhz takes the same voltage on our phones. That means draws the same amount of power. BUT at 240 Mhz, tasks take longer and thus drains the battery more. The next step up in voltage is at 600 Mhz, so for optimal battery drain you set 480 Mhz as you low end.
Sent from my LG-P500 using XDA App
Think about let's say u are running constant at 2km/h.( device screen off)
Then (device wakes up) do you have to run 5 or more km/h.
So the energy is used alot when it has to suddenly run faster
terratrix said:
Think about let's say u are running constant at 2km/h.( device screen off)
Then (device wakes up) do you have to run 5 or more km/h.
So the energy is used alot when it has to suddenly run faster
Click to expand...
Click to collapse
What he means is that would you rather "sprint" from 0 to 10 or from 8 to 10. The longer it takes the more power you have to use.
if New then
http://www.youtube.com/watch?v=JmvCpR45LKA&feature=youtube_gdata_player
InfiniteRisen said:
What he means is that would you rather "sprint" from 0 to 10 or from 8 to 10. The longer it takes the more power you have to use.
if New then
http://www.youtube.com/watch?v=JmvCpR45LKA&feature=youtube_gdata_player
Click to expand...
Click to collapse
Anyway, there are still some background task running before they go into sleep and the faster they are finished, the faster it goes into deep sleep and save battery. So it obviously takes a longer time on 245mhz to complete task on screen off than on 480mhz.
Guys,
After buying I recharged my phone once.
Now even when I'm simply listening to music and using tapalalk, battery temps are at 43 degrees celsius.
When doing back to back speedtests it went to 47 deg cel.
The lower portion of phone becomes hotter.
I'm really worried.
Can you guys give your battery and phone temps ?
Ps : use cool tool software.
Sent from my GT-I9300 using Tapatalk
I have no problem what so ever, played Dungeon defenders and GTA III today and it did not get more than 35 degree celcius. The phone do heat a bit up when it charge, but no higher than 35 degree... I did not play and charge the phone at the same time.
(however dungeon defenders did actually lag a bit :O, must be the game that is pooly optimised).
I tried stress testing the phone by playing an hd video using popup play and running shadowgun at the same time, and the battery only reached 39 deg. celcius.
I've setup some battery temperature warning events at 40, 44, 48, and 50 degrees and only my lowest one has ever triggered. Highest I've seen the battery is 42 degrees.
So you guys think its a defective battery ?
Or it needs 3 to 4 recharges to come to that optimal temperature ?
Sent from my GT-I9300 using Tapatalk
I think weather / room temperature play a big part here. In hotter environments phone temperature during idle or use would naturally be higher than in colder ones. Pretty sure it's quite warm in Bangalore this time of year.
Sent from my GT-I9100 using xda premium
sachinaik said:
So you guys think its a defective battery ?
Or it needs 3 to 4 recharges to come to that optimal temperature ?
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
you can better try switching off the mobile, pullout the battery and turn it on after a few minutes. also check the cpu usage, you may have installed some app which might be continuously running in the background
bala_gamer said:
you can better try switching off the mobile, pullout the battery and turn it on after a few minutes. also check the cpu usage, you may have installed some app which might be continuously running in the background
Click to expand...
Click to collapse
Did not workout. Issue still exists.
No background process running. No cpu hogs.
One more thing I noticed : the battery temp raises to 47 only when there is lot of activiy ln the chipset (either 3g downloads or cpu activities which causes it to clock at 1.4 ghz more often). Where as on sgs2 if i apply the same load its 35 deg. I tried it on sgs2 and measured the temp.
The battery temp most of the time is 40 deg, thats what bothering me.
Sent from my GT-I9300 using Tapatalk
M planning to return my phone because of this overheating.
Just 5 mins played the game and battery temp raised from 30 deg cel to 44 deg cel.
Suggestions pls.
Samsung dealer says that i've 4 days. Within 4 days if i find any problems i can get a letter from nearest samsung service center and upon seeing that letter he will immediately give me a new phone.
I do not know what will happen if i ask for a refund of money.
Sent from my GT-I9300 using Tapatalk
I changed the battery. Battery temp is well under 40 deg under regular browsing with music player playing in bkground.
Under heavy gaming under A.C. temp stays still at 40 deg.
I'm ok with these readings.
Now m gonna undervolt the phone also underclock cup and gpu and see how the temps turnaround.
Sent from my GT-I9300 using Tapatalk
hey
i start webbing the net and set the brightness to half sun [30% or 40%]
and got that leakage
2% of battery for one min of webbing very high
i played a bit with the brightness and it went down
i test it at power saving gov'
0% bright = 150 mA
100% bright = 350mA
very abnormal no ?
here pics with battery drain
edit:
using global FW
suil's sense4.1 rom
the transistor of the screen is not functional well ?
350 mA is pretty low actually, although I measure with Battery Monitor Widget by 3c.
Can you get GSAM Battery Monitor and post the results?
Sent from my HTC Rezound using Tapatalk 2
thx for reply i did the same test now
and still got 2% for min even on 0% bright
It's not screen, it's CPU using much current. Flash custom kernel and limit cpu max freq. and you will see much better battery life. I managed to have 6hrs of display on time while reading with same rom and funky kernel and cpu set to 500Mhz max in airplane mode
I got stock AT&T JB, rooted and installed TWRP. Removed all the bloat via TB Freeze (watching if anything breaks). I have slight hope that battery life could be a bit better, but not so. How's yours?
FYI, I don't play tons of games nor talk a lot on the phone, but I do use these, which I believe sucks battery regardless of what phone I use:
1). 3 Gmail accounts with Push
2). 1 Exchange account with Push
3). Google Now with Location Reporting - lots of wakelock unfortunately.
The phone does have "Deep Sleep", so no issue there.
I could say abouth 10 to 12 hour of use or less but I been getting 1 day of use on mine after the update. Take in mine i work in a office so I don use it much. Just few calls. Texting butbi do se netxflix during my lunch time
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
My battery has been not so good
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
From another thread I posted in;
I'm at 4 hours screen on time and 22 hours on battery with 18% remaining. On my second full charge cycle on this update. I fully charged last night and unplugged from charger. Checked 8 hours later and battery was at 96%. Deep sleeping well. Running stock un-rooted with about 40 apps disabled. My stock battery is fairly new, purchased about a month ago.
I just switched back to CM10 stable this morning...but I made a nandroid of my rooted stock. The battery life, from my little bit of time I had with it, was less than usual and the phone ran pretty hot.
shayneflashindaily said:
My battery has been not so good
Click to expand...
Click to collapse
I froze all the crap and used it for two days and I barely get through the day. And I'm a little more busy so I spend a little less time on phone activites.
I will say I noticed it charges pretty fast.
rsfinsrq said:
From another thread I posted in;
I'm at 4 hours screen on time and 22 hours on battery with 18% remaining. On my second full charge cycle on this update. I fully charged last night and unplugged from charger. Checked 8 hours later and battery was at 96%. Deep sleeping well. Running stock un-rooted with about 40 apps disabled. My stock battery is fairly new, purchased about a month ago.
Click to expand...
Click to collapse
That's really good batery life! I'll be lucky to get 2 hours screen yime with that much standby!
You mentioned new battery, maybe that's what I need to buy. My battery is about 11 months old.
lanwarrior said:
That's really good batery life! I'll be lucky to get 2 hours screen yime with that much standby!
You mentioned new battery, maybe that's what I need to buy. My battery is about 11 months old.
Click to expand...
Click to collapse
Without a doubt the health of the battery makes a big difference. The old battery did not last long and it would stop charging at 30-40%. I replaced the battery and charger (Both OEM) and it was like night and day! I was able to get a little over 5 hours screen time and over a day and a half standby on stock ICS. I'm hoping to get close with this rom after a few more charge cycles. (FYI, I avoid charging the battery or even plugging into a USB until I am able to fully charge the battery. I believe short intermittent charging negatively effects battery life/performance.)
These screenshots are from stock un-rooted 4.0.4 a few charge cycles after I replaced the battery and charger;
I ran into an issue today where my battery went down by about 50% in 3 hours will about 10mins time where the phone wasn't in standby, I went into battery and found that the media service had used almost half of that or around 25% of my battery. rebooted the phone and i'll see where it goes from there. prior to that battery life was fine.
rsfinsrq said:
(FYI, I avoid charging the battery or even plugging into a USB until I am able to fully charge the battery. I believe short intermittent charging negatively effects battery life/performance.)
Click to expand...
Click to collapse
Ah.. that's going to be tough for me. I drive a lot for work and use the Google Navigation. The phone is connected to the USB charger in the car on and off. I.e. 1 hour here...30 min there...
Lithium-ion batteries don't suffer from the memory issues of other battery types. Little bursts of charging won't shorten its life.
But a new battery should always be charged to 100% before using.
Battery wasn't as good as 4.0.4 rooted, debloated, running on Nova prime launcher. I have the exact same setup on 4.1.2. However, it seems to charge a bit faster.
Sent from my SAMSUNG-SGH-I717 using Tapatalk 2
SKyRocKeting727 said:
Battery wasn't as good as 4.0.4 rooted, debloated, running on Nova prime launcher. I have the exact same setup on 4.1.2. However, it seems to charge a bit faster.
Sent from my SAMSUNG-SGH-I717 using Tapatalk 2
Click to expand...
Click to collapse
Yes! Thought it was only me. So weird but indeed it charges faster.
And honestly the battery life is about the same. Though I did remove lots of stuff and this is how my application screen looked before restoring all of my apps.
After I restored all the apps I left my phone during the night after full charge with 2 voip apps running. (though keep in mind I slept only for 6 hours and I use that cheap $10 extended battery):
Code:
Battery Info
============
Level lost [%]: Bat.: -6% (100% to 94%) [0.9%/h]
===========
Deep Sleep (): 6 h 13 m 11 s (22391 s) Ratio: 54.0%
Awake (): 10 m 9 s (609 s) Ratio: 2.6%
Screen On (): 3 m 20 s (200 s) Ratio: 0.9%
Wifi On (): 6 h 23 m 20 s (23000 s) Ratio: 100.0%
Wifi Running (): 6 h 23 m 20 s (23000 s) Ratio: 100.0%
No Data Connection (): 6 h 23 m 20 s (23000 s) Ratio: 100.0%
No or Unknown Signal (): 6 h 23 m 20 s (23000 s) Ratio: 100.0%
Screen dark (): (0 s) Ratio: 0.0%
Screen dimmed (): 3 m 20 s (200 s) Ratio: 0.9%
===========
CPU States
==========
384 MHz (): 6 m 9 s 1.6%
432 MHz (): 7 s 0.0%
486 MHz (): 15 s 0.1%
540 MHz (): 9 s 0.0%
594 MHz (): 15 s 0.1%
648 MHz (): 5 s 0.0%
702 MHz (): 3 s 0.0%
756 MHz (): 6 s 0.0%
810 MHz (): 26 s 0.1%
864 MHz (): 11 s 0.0%
918 MHz (): 9 s 0.0%
972 MHz (): 7 s 0.0%
1.03 GHz (): 14 s 0.1%
1.08 GHz (): 6 s 0.0%
1.13 GHz (): 5 s 0.0%
1.19 GHz (): 5 s 0.0%
1.24 GHz (): 1 m 4 s 0.3%
1.3 GHz (): 0.0%
1.35 GHz (): 1 s 0.0%
1.4 GHz (): 0.0%
1.46 GHz (): 0.0%
1.51 GHz (): 24 s 0.1%
Deep Sleep (): 6 h 13 m 11 s 54.0%
=========
rsfinsrq said:
Without a doubt the health of the battery makes a big difference. The old battery did not last long and it would stop charging at 30-40%. I replaced the battery and charger (Both OEM) and it was like night and day! I was able to get a little over 5 hours screen time and over a day and a half standby on stock ICS. I'm hoping to get close with this rom after a few more charge cycles. (FYI, I avoid charging the battery or even plugging into a USB until I am able to fully charge the battery. I believe short intermittent charging negatively effects battery life/performance.)
Click to expand...
Click to collapse
Both my current batteries still charges, it just don't last as long as I hoped to.
BTW, with the kind of battery life you got, are you running the following:
- Multiple GMail Push accounts
- Exchange accounts
- Google Now.
Just 1 Gmail (Using the email app, I disabled the Gmail apk), no exchange, and I am running Google Now. I do not run any memory intensive games, etc. Just web, Tapatalk, simple games, etc. A lot of screen time was spent setting up home screens, widgets, wallpaper, etc. Would be considered light use.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2
rsfinsrq said:
Just 1 Gmail (Using the email app, I disabled the Gmail apk), no exchange, and I am running Google Now. I do not run any memory intensive games, etc. Just web, Tapatalk, simple games, etc. A lot of screen time was spent setting up home screens, widgets, wallpaper, etc. Would be considered light use.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2
Click to expand...
Click to collapse
Thanks for the info. I have more background apps running as mentioned above (push emails, Exchange, etc.), so my battery life suffers. I am using an extended battery (thick one) and it doesn't last as long as I hoped to.
So far, it has been:
Battery level: 64%
Battery time: 9 hours, 30 minutes
Screen time: 2 hours, 21 minutes
FYI, this is how bad my battery life is...
Not sure if this is because of Google Now or the fact that I have multiple stuff going on in the background...
I have the same issue as you. The maps app is killing my battery. It is waking the phone every minute it seems. I unchecked all boxes in location services today and my battery is still at 80% with limited useage. What is causing maps to keep activating?
Agoattamer said:
I have the same issue as you. The maps app is killing my battery. It is waking the phone every minute it seems. I unchecked all boxes in location services today and my battery is still at 80% with limited useage. What is causing maps to keep activating?
Click to expand...
Click to collapse
I believe it is Google Now.
My battery drains even when I am using the phone while its plugged into USB wall charger. In general, 2 hours of steady use will drain 75% of my battery. I have 4 total batteries and get roughly the same performance from each.
What is the phone temperature while using and while charging your redmi note 4
While using : 32-36 normally and max I saw was 40.
Note: I don't play games. Apps which I use does not produce much heat.
Charging : Max 46 (Never noticed above this)
*I don't use phone while charging except attending important calls.
Lucife.r said:
What is the phone temperature while using and while charging your redmi note 4
Click to expand...
Click to collapse
When using for me its always below 37°c (use gsam battery monitor)
When charging it reaches upto 40°c
Using while charging it reaches upto 42°c .
My device never crossed 44°c .
My setup : aicp +revolt
Or du +revolt