Database Develop

How much does overclocking affect the battery?

This is probably a stupid question but I'll ask it anyway. I've noticed my phone draining lately (or maybe it's not, I'm not quite sure what the battery life used to be xD), and I recently overclocked my phone to 1.25 GHz (my profile on SetCPU is ondemand), does overclocking affect the battery that much?
I run Froyo (rooted with wifi fix and the 1.25 GHz kernal)

I'm using an ultra low voltage kernal at 1ghz and haven't noticed a difference, if anything it seems like it's better.
I guess it probably largely depends on what kernal.

I've been overclocked for 4+ months. The first month before I rooted, I was getting around 16-18 hours on a full charge at the stock 550 speed. After I rooted, a lot depended on the rom (lesser so) and the kernel (more so). I think the best performance I got was on ChevyNo1's SS rom (2.1) with one of his kernels ... 40+ hours overclocked conservatively at 800. My first shot some time back with CyanogenMod got me 3 hours with the early Bekit kernels but the past several versions up through 5.0.8 I was getting about 30 hours clocked at 800 with a jdlfg kernel. Now on Froyo I'm getting close to 30 hours again conservatively at 800-1000 ... which on a 2.2. rom is more like 1200+ since its faster.
So, in short, my battery life has significantly improved while running faster than stock. But no 2 Droids are identical in terms of how a rom and/or kernel perform. With 2.1 roms my Droid seems to like jdlfg's kernels, while on 2.2 the P3droid kernels do good. But that's what I found out via a lot of trial and error, not anyone's post saying "You must try ______'s kernel (or rom) as its da bomb!"

I would like to include that the post above by "cvhovey" provides some valuable information that might interest you and suggest anyone untreated in this thread to read that post.
Using an application like SetCPU you can throttle down the processor speed when the screen is off, this reducing heat and gaining better battery life. This doesn't mean you will get better battery life if you use your phone all day and never turn the screen off. But is totally worth it because u feel like I'm getting awesome battery life, plus an amazingly fast phone because SetCPU will overall me to my personal preference of 1100mhz on demand.
The answer to your actual question depends on how well you set up your phone preferences according to what benefits you the most, and what method of adjusting processor speed. I only mentioned one here, there are mire ways than just an APK.
Sent from my Droid using XDA App

PetRiLJoe said:
Using an application like SetCPU ...
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1+ on that. But how one uses SetCPU can also make big differences, such as which governor is selected. SetCPU at 400-1250 with the Performance governor will essentially run at its highest speed all of the time (if I'm correct), whereas with the Conservative governor will ramp up from 400 to 1250 at a slower pace, or at a faster face with Ondemand.
This thread can give you some helpful tips: Battery Saving Techniques - Theories in Test

Alright, thank you for your help ^^

i used SetCPU and my phone had continuously reboots...
I just had to uninstall it..

Were you using profiles in any way? A specific ROM? I've had similar a experience with certain ROMs (specifically UltimateDroid).
Best guess is that it just didn't play nice with the modded kernel.
Sent from my Droid using XDA App

Underclocking for Battery Life?

I was thinking about doin this but I have NO idea what would be a good/safe amount to undervolt/underclock. The main reason i want to do this is to get some more juice outta my battery but I'm not sure what a good amount is. Is there a way to keep performance and overall "snappiness" of the phone about the same and still get a good gain of battery life? Also is there anyway i can damage my phone by doing this? Sorry if these are stupid questions but i wanna be safe
I'm on CM 6 RC if that makes any difference. Thanks

Anyone? Using SetCPU btw

I used an 800mV kernel for a while and had SetCPU @ 806mhz -- battery life was insane.

SetCPU doesn't make a difference in battery life, it can only shorten it. The kernal already has the best settings for CPU speed built in.
The main function of SetCPU is to overclock.

evilkorn said:
SetCPU doesn't make a difference in battery life, it can only shorten it. The kernal already has the best settings for CPU speed built in.
The main function of SetCPU is to overclock.
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Click to collapse
Ah did not know that thank you
So with that in mind, is there any kernel you would recommend? Or am i just better off with what's already installed

Stock (cyan's) works fine for me. Try them and find out which works best for you.
Thankfully people stopped releasing their own kernals in masses... but they were replaced by winzip roms...

Overclock or not?

A few weeks ago when I still had my HTC Hero it was overclocked to 672Mhz (standard = 528Mhz). It gave me a little boost in performance on Froyo, also the batterylife wasn't decreased too much.
But with our N1 running on 1Ghz, will it give much difference when clocked to 1113/1152Mhz? And what about batterylife?
If SetCPU is used what are your settings then? Mine is currently running on stock speed, no SetCPU.

ZeppeMan said:
A few weeks ago when I still had my HTC Hero it was overclocked to 672Mhz (standard = 528Mhz). It gave me a little boost in performance on Froyo, also the batterylife wasn't decreased too much.
But with our N1 running on 1Ghz, will it give much difference when clocked to 1113/1152Mhz? And what about batterylife?
If SetCPU is used what are your settings then? Mine is currently running on stock speed, no SetCPU.
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Click to collapse
I have my nexus one rooted and flashed to MIUI Rom and clock @ 690mhz I get way better battery power. Before I would only get 6hr to 8hr if lucky now I get from 9hr to 13hr depending how much I use it.

set to 1.13 ghz
then screen off to minimum 245mhz

josemedina1983 said:
I have my nexus one rooted and flashed to MIUI Rom and clock @ 690mhz I get way better battery power. Before I would only get 6hr to 8hr if lucky now I get from 9hr to 13hr depending how much I use it.
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Click to collapse
So you underclocked it, what about the speed? It's not to laggy?

Nexus one can run reasonably smooth @ 600mhz and above. It might not open applications as fast as it will be @ 1GHz though.

i think 1Ghz is enough for n1
why do u want an overclock?
Sent from my Nexus One using XDA App

shreyas1122 said:
i think 1Ghz is enough for n1
why do u want an overclock?
Sent from my Nexus One using XDA App
Click to expand...
Click to collapse
I didn't said I want an overclock. It's allready very fast on 1Ghz (compared to my old Hero ), just wanted to know your thoughts about overclocking the N1.

im overclocked at 1152 mhz and profiles set for 245 max with screen off. Overclocking is nice because i like the snappiness but most people cant tell the difference between 998 mhz and 1152. its not needed to overclock but i think profiles help alot. just my two cents

Ok thx, I will try 1150Mhz and see (if it's stable and) what batterylife does. I'm also going to try underclocking.
I have my N1 only for a couple of weeks now and I must say, this phone is awesome. It's VERY fast compared to my old Hero. I remember when I was installing apps on my Hero it became very slow and couldn't do anything untill installing was finished. With the N1 you still can do things while installing apps without lag. The responsiveness and smoothness is also a lot faster. I loved my Hero Because it never let me down, ok it was all a bit slower, but it was getting there. Now with the release of Gingerbread (custom ROM) it became to slow for me and that's why I sold my Hero and bought the N1. It was very difficult to find one, because of the EOL (end of life). But eventually I found one and i'm very happy with it. The N1 is allready more 1 year old, but it still competes with the best phones out there.

I generally run overclocked at 1075MHz, which gives a good balance between battery power usage and processor power. My understanding is that a different voltage scaling method is generally used above 1075MHz, so power consumption will increase above that point.

Didn't knew the voltage would increase above 1075Mhz, will keep that in mind

ZeppeMan said:
Didn't knew the voltage would increase above 1075Mhz, will keep that in mind
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This is, of course, dependent upon how the kernel is constructed, but this is what I have generally found to be true.

Give us some feedback

I overclocked it too 1075Mhz when screen is on (screen off 245Mhz). Will give my thoughts in a day or 2.

Just report that my battery drain is almost the same as on stock settings. I think it drains a tiny bit faster on 1075Mhz, but nothing major. On the other hand, I don't feel it's faster on 1075Mhz then on stock speed. Only benchmarks give me performance increase.
I'm now on CM6.1.1 with stock kernel (cyanogen), I tried other kernels like Wilmonks kernel,.. Although it was more responsive, battery was going down even faster. I get best battery results with stock kernel.
Hard to choose
more speed = more battery drain
less speed = longer battery
I think I stay with the last option (less speed = longer battery), because Wildmonks kernel doesn't give me enough performance increase over the stock kernel on stock speed.

I have mine at 998mhz, but overclocked 1152 while plugged into power.
Either way, its so easy to play with the clock settings, i'd just have a play with a bunch of different settings if i were you.

liam.lah said:
I have mine at 998mhz, but overclocked 1152 while plugged into power.
Click to expand...
Click to collapse
I'd love a how-to fire that..
mind sharing the app?
Sent from my Nexus One

ZeppeMan said:
wanted to know your thoughts about overclocking the N1.
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Click to collapse
well my thoughts: underclock!
so you can watch movies on it all night!
Sent from my Nexus One

shreyas1122 said:
I'd love a how-to fire that..
mind sharing the app?
Sent from my Nexus One
Click to expand...
Click to collapse
You can use SetCPU to create profiles based on different circumstances.
Me, I have mine clocked to a max of 1075 and min of 245 with the screen on, 576 max / 128 min screen off, 998/128 charging (to reduce heat - overclocking while power is applied can make it silly hot), and a failsafe to clock down to 576/128 if the temperature gets over 50*C.
Fabulous app.

Correct me if I am wrong. When you use setcpu to "ondemand", the CPU speed can ramp up to max whenever necessary, otherwise the speed will tune down to min especially in standby mode. In that way, you can enjoy the advantages of overclocking and underclocking the CPU speed i.e. increasing performance when needed and saving power when not in use, right? When I loaded Rod's MIUI and Wildmonk's kernel, I can underclock down to 128Mhz and overclock up to 1.152Ghz. At the end of the day, I still have over 60% of power left after not so heavily use (some web browsing, checking email and listen some music). Overall, setcpu is a great app for me.

[Q] Fastest Rom & Best Battery Life

Does anyone have any recommendations for a rom that is pretty fast and smooth while having great battery life. Also any tips to get really good battery life such as processor speed and kernels etc..any opinions appreciated.

I use jaybobs aosp or cm7 with .29 kernel so I can use my headset. I use setcpu and clock 576/691 at full power then drop it if battery gets too low or raise it when I'm charging. The only way you'd extend battery life drastic is to live with a good signal and actively manage your data connections and sync.
{you are my Hero}

dpeeps74 said:
I use jaybobs aosp or cm7 with .29 kernel so I can use my headset. I use setcpu and clock 576/691 at full power then drop it if battery gets too low or raise it when I'm charging. The only way you'd extend battery life drastic is to live with a good signal and actively manage your data connections and sync.
{you are my Hero}
Click to expand...
Click to collapse
hmm i will try it ive used cm7 and aosp but they seem to lag for me when im using the keyboard alot but ill try that kernel and see how that goes. I guess what you said about the battery life make sense cause i live in a area with pretty bad sprint service. guess i can fix that by turning off data while i plan to not use my phone thanks for your respond. Anybody else have any suggestions?

I recently just installed jaybobs rom (august 14th) like 4 days ago. I use the kernel .35 CPU=480min/710max
along with the v8 tweaks, and firerats.
As of right now my battery is 19h 29m 0s on battery at 21% battery level
Texted a lot, talked for a few minutes, update apps on market. I only use it to talk and chat cause i have a tablet that i do my surfing or gaming stuff =P

Majin101 said:
I recently just installed jaybobs rom (august 14th) like 4 days ago. I use the kernel .35 CPU=480min/710max
along with the v8 tweaks, and firerats.
As of right now my battery is 19h 29m 0s on battery at 21% battery level
Texted a lot, talked for a few minutes, update apps on market. I only use it to talk and chat cause i have a tablet that i do my surfing or gaming stuff =P
Click to expand...
Click to collapse
Could you send me a link to this v8 tweak? Ive never heard of it but im willing to try anything i usually get about 12 hours battery life.

I don't think the v8 helps the battery, i think it's just for performance. u should try it without it first.
heres the link to the v6 tweaks
http://forum.xda-developers.com/showthread.php?t=991276
What do you do on your phone? 12 hours is pretty good.

Majin101 said:
I don't think the v8 helps the battery, i think it's just for performance. u should try it without it first.
heres the link to the v6 tweaks
http://forum.xda-developers.com/showthread.php?t=991276
What do you do on your phone? 12 hours is pretty good.
Click to expand...
Click to collapse
Well im running OMFGB August 12 nightly its one of the fastest and smoothest 2.3 rom ive ever used i havent used the aosp verion though so i dont know how smooth that one is. And i have email syncing and facebook and i use google voice a lot i mostly do texting and i keep my homescreens without any widgets that need to update a lot. i also calibrated my battery so i could get pretty decent battery life which in my opinion is 12 Hours but im still looking on ways to improve it.

ohh, i see. Yeah i know where ya comin from, I've done a lot of flashing and just decided to go with the most stable. They were all somewhat smooth but as for battery life, I've gotten the best battery with jaybobs rom.

Alex1123 said:
Does anyone have any recommendations for a rom that is pretty fast and smooth while having great battery life. Also any tips to get really good battery life such as processor speed and kernels etc..any opinions appreciated.
Click to expand...
Click to collapse
For Battery life I would recommend extended 1900mAh batteries.
I didn't have to buy custom cover since they fit in the stock back cover.
2 batteries with external charger with shipping would cost you about $20.
I get about 2 days on a single charge with moderate use.
I am using CM7.1 nightly 160 at the moment.
If you are interested let me know I will point you towards the retailer
I bought them from on Amazon/Ebay.

Well im going to try jaybobs rom then and see how that does yesterday with OMFGB rom i got 11h 59m 2s and after that it shortly died off and im just running setcpu at 729 max 691 min performance lol i think i really need to change that if i want save battery does any one have any good setcpu profiles they would recommend? And i might look towards buying a extended battery but i dont really want to seeing as my upgrade is in december.

Alex1123 said:
Well im going to try jaybobs rom then and see how that does yesterday with OMFGB rom i got 11h 59m 2s and after that it shortly died off and im just running setcpu at 729 max 691 min performance lol i think i really need to change that if i want save battery does any one have any good setcpu profiles they would recommend? And i might look towards buying a extended battery but i dont really want to seeing as my upgrade is in december.
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Click to collapse
Well that is what killing your batteries right there
I am no expert but I will tell you what I use,
I only use 1 profile besides the main one on setCpu:
Screen On/Main: 691 max 176 min (On Demand)
Screen Off: Max 264 min 19 On Demand ( Since I dont use it for music or anything else screen off with min 19 is no issue for me)
By the I also use v6 Super Charger and V8 kernel tweaks and they do make
your phone very snappy and responsive!!
Best of luck

I recently flashed gingerbread hero deck and it's pretty nice. But, something weird I notice is that my 3g download speeds have dropped off considerably (from 1200kbps range to 600). I can't explain it. I was on aosp's 5-23 rom before. I also recently started using firerats mod. Not sure what's up.
Sent from my HERO200 using XDA App

Its the build prop that causes it. I'd use the V8 3g tweaks to see if it helps.

okay ive installed OMFGB 1.3.1 nightly 8/17 and with the V6 scirpt runs well along with the v8 and the 3g one which i cant recall the name of but everything now runs really good but im still calibrating the battery so i still have to see how that goes but so far its been good. Thanks for the tips everyone now to try out this jaybobs kernel hopefully everything will still work well.

[Q] Ace Problems Battery and ROM

hi there,
i have some problems with my phone. the battery drains very fast. like i receive a sms and leave it there untouched for 2 hours and the battery drains from 100% to about 60%
Another problem is that i get force close on almost every app. facebook, go sms and so on. and the respond time is very slow. like SLOW
Thank for reading. i hope that there will be replies
Samsung Galaxy Ace - CM7 by FAT

Use zimage 1.5 kernel did u wipe before flashing?
the Mafia aka KASE ARe For TroLLing

zaqwankira said:
Use zimage 1.5 kernel did u wipe before flashing?
the Mafia aka KASE ARe For TroLLing
Click to expand...
Click to collapse
ya, will try it

Have you applied any patches ??

maybe i think you should flash back your rom again..

sax0406 said:
Have you applied any patches ??
Click to expand...
Click to collapse
i dont think so but anyway, i am now using Apocalypse ROM by itasoulas

Thanks to everyone who has contributed to this thread. I've manage to figure out (not really figure, more like a hunch/guess) what went wrong. its the kernel.
now im using Apocalypse ROM [Firekernel OC] by itasoulas

Im really sorry but I dont understand any of the tech stuff posted here, but what I do know is that my 1 yr old battery on my Ace is like worth 3 minutes of calls now (only)!!!
Pls help. Should I get a new battery instead?
Thanks!

DCTopTeam said:
Im really sorry but I dont understand any of the tech stuff posted here, but what I do know is that my 1 yr old battery on my Ace is like worth 3 minutes of calls now (only)!!!
Pls help. Should I get a new battery instead?
Thanks!
Click to expand...
Click to collapse
Obviously, yes!
~~~when I say,'HENSHIN',u better run~~~

Hey,Check how much you have clocked your phone at and the governer
Settings>CyanogenModSettings>Performance(press OK for the warning)>CPU Settings;If the governor is ONDEMAND, change it to Smartassv2 and increase Min value to 245. I use Apocalypse and my battery life is awesome(check the attachments).
Second lower your screen brightness simple yet effective. also increase the Max value in the CPU settings to 902 for zero lag.Also set the network to only 2G if you dont want your 3G on all the time.This saves lot of battery life too.
Press Thanks If I helped

GabanBajaHitam said:
Obviously, yes!
~~~when I say,'HENSHIN',u better run~~~
Click to expand...
Click to collapse
DCTopTeam said:
Im really sorry but I dont understand any of the tech stuff posted here, but what I do know is that my 1 yr old battery on my Ace is like worth 3 minutes of calls now (only)!!!
Pls help. Should I get a new battery instead?
Thanks!
Click to expand...
Click to collapse
DCTopTeam - u can check the physical battery condition whether is bloated (feels expanded), this is an indicator that the battery is about to die

Flash a kernel, i recommend The ace kernel beta 4, it is discontinued, but has no bugs, a long battery life included

TJ_Ahluwalia said:
Hey,Check how much you have clocked your phone at and the governer
Settings>CyanogenModSettings>Performance(press OK for the warning)>CPU Settings;If the governor is ONDEMAND, change it to Smartassv2 and increase Min value to 245. I use Apocalypse and my battery life is awesome(check the attachments).
Second lower your screen brightness simple yet effective. also increase the Max value in the CPU settings to 902 for zero lag.Also set the network to only 2G if you dont want your 3G on all the time.This saves lot of battery life too.
Press Thanks If I helped
Click to expand...
Click to collapse
902 seems high... that might drain the battery faster. i don't go higher than 825.

DuckyDawn said:
hi there,
i have some problems with my phone. the battery drains very fast. like i receive a sms and leave it there untouched for 2 hours and the battery drains from 100% to about 60%
Another problem is that i get force close on almost every app. facebook, go sms and so on. and the respond time is very slow. like SLOW
Thank for reading. i hope that there will be replies
Samsung Galaxy Ace - CM7 by FAT
Click to expand...
Click to collapse
I used a small trick to disable fast dormancy and it increased my battery life considerably. Check this link here Disable Fast Dormancy to increase battery life