How to get 36 hours on 1 charge - G2 and Desire Z General

Alright, so I'm not a very heavy user on the phone but I've started getting 36 hours of use on my phone. I was blown the hell away! I usually would get a Max of up to 25 or 26 hours or so before this. Even then a full 10 hours extra is magnificent!
Here's what I've got going on:
Running MIUI 2.3.23 ROM with Bulletproof Add On pack
Using Tiamat 1.1.5 kernel
Juice Defender Plus on Advanced mode
Recaibrated my batter with Battery Callibrator app
Overclocking at 1039 MHz and underclocking at 184 mhz using SetCPU
After calibrating my battery I let the battery run out completely a couple of times and voila!
I took a screenshot of my usage statistics but I can't find the damn thing now. I guess you're just got to trust me on this. This was definitely worth sharing.
All the best!
Sent from my HTC Desire Z using XDA

How many hours of screen on time did you have at the end of that charge? The longest battery life i've ever had for my phone was actually 3 days and 3 hours with 5 hours of screen on time. I'm a light to moderate user and i achieved that result with CM7.2 RC1 without any tweaks.
I really like the look of MIUI but i don't find it to be as fast as it really should be. I get frustrated by the scrolling lag that is present in the settings menu and the fact that video playback is much slower in comparison to other ROMs. Web pages were also always SO much more laggy in MIUI for me than on Sense or AOSP based ROMs. That's my personal experience, i think i've just about given up on MIUI and Sense based ROMs. I haven't touched either of those for a while now.

I get 36 hours normally with the stock Sense 2.1 ROM and Unity V10 kernel. Overclocked to 1Ghz with the standard governor.
I use it quite lightly though, 10 to 20 SMS, bit of internet / Facebook and 30 mins FM radio in the morning. Also accounts sync automatically, mail picked up every hour, data always on. That was with the stock battery, with the Anker 1600 mah I get to 36 hours with about 30% to spare!
On a side note, underclocking below 245Mhz has been know to cause problems. Standby of Death (or Sleep of Death), and possibly dropped SMS etc.
Craig

craiglay said:
I get 36 hours normally with the stock Sense 2.1 ROM and Unity V10 kernel. Overclocked to 1Ghz with the standard governor.
I use it quite lightly though, 10 to 20 SMS, bit of internet / Facebook and 30 mins FM radio in the morning. Also accounts sync automatically, mail picked up every hour, data always on. That was with the stock battery, with the Anker 1600 mah I get to 36 hours with about 30% to spare!
On a side note, underclocking below 245Mhz has been know to cause problems. Standby of Death, and possibly dropped SMS etc.
Craig
Click to expand...
Click to collapse
*sleep of death or SOD... i think S is for sleep not standby...
———————————————
i didn't mean to flame you, nor to mock you in any kind of way

thats quite insane @[email protected];;
i get about 13~15 hours of charge each time @[email protected];;
i use my phone mainly for texting and emails
no games on the phone...
i should give that a try, thats quiet insane ;o

lil-devil said:
thats quiet insane @[email protected];;
i get about 13~15 hours of charge each time @[email protected];;
i use my phone mainly for texting and emails
no games on the phone...
i should give that a try, thats quiet insane ;o
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Click to collapse
Hehe the word you're looking for is "quite" and not "quiet(as in low sound)".

Ace42 said:
Hehe the word you're looking for is "quite" and not "quiet(as in low sound)".
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Click to collapse
woops typo

magic_android said:
How many hours of screen on time did you have at the end of that charge? The longest battery life i've ever had for my phone was actually 3 days and 3 hours with 5 hours of screen on time. I'm a light to moderate user and i achieved that result with CM7.2 RC1 without any tweaks.
I really like the look of MIUI but i don't find it to be as fast as it really should be. I get frustrated by the scrolling lag that is present in the settings menu and the fact that video playback is much slower in comparison to other ROMs. Web pages were also always SO much more laggy in MIUI for me than on Sense or AOSP based ROMs. That's my personal experience, i think i've just about given up on MIUI and Sense based ROMs. I haven't touched either of those for a while now.
Click to expand...
Click to collapse
I'm not sure how much screen on time I had. I'll give it a check next time I'm monitoring my performance.
Sense UI has been a pain for me from the moment I started. I tried CM 7 but it had a bug where it wouldn't vibrate when I got a message unless it was in silent mode. Since I SMS quite a bit, it was quite annoying. I tried a couple of Virtuous ROMs too but they were glacial in their speed. Couldn't stand the lag.
I find MIUI to be the perfect balance between features, UI and speed. It might be a tad laggy in some places, but on the whole, it looks great, works great and doesn't give me problems in the parts I use the most. It doesn't seem quite as laggy with me as you seem to describe it. But anyhoo, for the first time since I bought my DZ, I feel like I have a good phone that I can rely on.
Thanks for your comments, man.

craiglay said:
I get 36 hours normally with the stock Sense 2.1 ROM and Unity V10 kernel. Overclocked to 1Ghz with the standard governor.
I use it quite lightly though, 10 to 20 SMS, bit of internet / Facebook and 30 mins FM radio in the morning. Also accounts sync automatically, mail picked up every hour, data always on. That was with the stock battery, with the Anker 1600 mah I get to 36 hours with about 30% to spare!
On a side note, underclocking below 245Mhz has been know to cause problems. Standby of Death, and possibly dropped SMS etc.
Craig
Click to expand...
Click to collapse
WOw! Really? Stock giving 36 hours! That's pretty sweet man. Never happened to me.
And thanks for the advice on the underclocking. Maybe I should up it a notch, just in case.

lil-devil said:
thats quite insane @[email protected];;
i get about 13~15 hours of charge each time @[email protected];;
i use my phone mainly for texting and emails
no games on the phone...
i should give that a try, thats quiet insane ;o
Click to expand...
Click to collapse
Go for it bro! And let me know if it works for you.
Right now, I've already hit 33.5 hours and have just hit 15% battery. And this is including a few games of Angry Birds. woohoo!

lunarplexus said:
After calibrating my battery I let the battery run out completely a couple of times and voila!
Click to expand...
Click to collapse
Letting the battery drain to shutdown is not a good idea. Not good for long term life of Li ion batteries. Also, its unlikely, but possible that draining to shutdown will render the battery unable to take a charge. Fail safes on the device and battery are supposed to prevent this in theory, but in reality they don't always work. Several reports on this device of people that drained to shutdown, and then couldn't charge their battery.
The battery meter is not accurate enough to necessitate draining to zero. Just drain to 10 or even 20%, charge to full, repeat a couple times. No value added whatsoever to draining to shutdown.
I have easily gotten 48 hours+ with light usage on various ROMs, including ILWT and Virtuous Unity (which is Sense 3, and claimed by some to be a "battery hog"). This is with Bluetooth and WiFi always on, and no special battery calibration or battery saving apps.. So many things affect battery life. But my personal hunch is that the ROM, clocking, radio, and data reception in your area (and of course usage) have more to do with battery life than other factors. And with radio and reception being the really big drivers.

That's definitely very helpful. I've always heard that rechargeable batteries are supposed to be drained completely and charged at least periodically to extend its life. Your proposition is contrary to this belief but then, I don't know that much about the battery and those aspects of the device itself to be able to refute what you're saying. Best to be on the safe side though.
Current record for my battery is 42 hours as of today. I'm pretty thrilled. My device was giving at least 10-15 hours less before I made these customisations. So I feel it probably has helped. However, there are a lot of factors at play, as you said.
Thanks for the response!

lunarplexus said:
That's definitely very helpful. I've always heard that rechargeable batteries are supposed to be drained completely and charged at least periodically to extend its life. Your proposition is contrary to this belief but then, I don't know that much about the battery and those aspects of the device itself to be able to refute what you're saying. Best to be on the safe side though.
Click to expand...
Click to collapse
There are various types of rechargeable batteries with very different behaviors. What you mention is known as battery conditioning, where you periodically drain to (nearly) empty and charge to full, and is recommended for older type NiCd (nickel cadmium) batteries. This is to avoid "memory effect" where the battery will remember how much was discharged in past cycles, and not deliver any more than demanded before. Kind of a "use it or lose it" principle.
Lithium (Li) ion cells (the type on most smartphones) do not suffer from memory effect. And full discharge cycles actually hurt the long term life of the battery. Charging frequently is actually the best for this type of bettery. But a couple nearly full cycles are needed to properly calibrate the battery meter on the phone.
If you want to educate yourself on the Dos and Don'ts of batteries, this website is a good one:
http://batteryuniversity.com/

Related

Whacky battery life theory...

OKAY. As many of you know, I used to be pissed about my battery life until I hit the gold mine with one of raven's 800 kernels. Even after trying 10 of them, only recently did one of them hit the spot for my phone. As most know, the higher the battery temperature, traditionally - the higher the battery drain. I noticed that most of the YouTube videos where people are showing off their N1s didn't have cases on their phones. Now, I regularly use two different cases: A seidio snap and one of the gel-like hard/flexible cases. Recently, I have been using the gel one. I also have a friend that I work with whose phone on the same setup and same kernel gets half the battery life that I do and she is using the snap right now. This morning, I flashed Raven's new 800 kernel AND switched my case to the Snap. If you saw my posts, I got roughly 35 hours of light-moderate use and still had 19% left a few days ago on his 800 from 5/04. After upgrading the kernel, my battery was better than stock, but not great (losing about 3%/hour). I just took off the Snap case and am flying naked right now and think I've already seen an increase in battery life. Obviously, it is too soon to tell. That being said, I'm a computer guy, not a physics guy and I don't know the thermodynamics of the material. I can say that the Seidio Snap has a felt lining and is plastic which I think traps more heat. You guys may tell me I'm nuts but I'm posting a poll to see. Now, I know everything is going to be a little subjective, especially the word "moderate"; however, I think most people contributing in the kernel threads have a solid understanding of the general consensus of the word. Sorry if the poll didn't include every option but I'm just curious.
<10 hour battery life is not crap. With moderate use that's what u get.
Can't vote in this poll.
DarkDvr said:
<10 hour battery life is not crap. With moderate use that's what u get.
Can't vote in this poll.
Click to expand...
Click to collapse
I considerate moderate use around 30 minutes total web browsing, 10-30 texts, <1 hr of phone usage and a few e-mails. Even the iPhone can go longer than that (and I hate the iPhone). Also, coming from someone now on 800AVS kernels that can finally get over a day, 10 hours is not very good.
I found the difference between nekkid and a rubber/felt case to be neglegable if any.
Conversely I found some apps to be bad about it when it comes to waking the phone for refreshing data or keeping the system awake (or more awake) even after the display is off. My biggest battery gains were in curtailing a few apps. ymmv, best of luck.
10 Hour moderate use is ok.
But i get double that...
Recently testing the GSM Auto (PRL) mod and it seems to boost my phone considerably.
Unhooked it yesterday at 8.00 PM went for my night shift.
At work i have used it for 20 min. Music and 20-25 min of surfing and nothing else. The rest of the time it has been on standby.
Is now almost 8.00 am. 12 hour has passed and is at 73% left discharging.
Here is my hacks and settings:
ROM: CyanogenMod 5.0.6-N1
Baseband: 2.6.24.00.22U-4.03.00.21_2 (unchanged)
Kernel: 2.6.33.2 CyanogenMod [email protected] #1
Build: EPE54B
Radio is unchaged.. using what came with it.
HACKS:
The GSM Auto (PRL) mod. http://forum.xda-developers.com/showthread.php?t=670999
Beautiful Widget apk
Custom theme Cyanogen 5.0.6 theme with HelixLauncher2
http://forum.xda-developers.com/showthread.php?t=656868
Bluetooth, Wifi, GPS & Dataroaming are OFF at all times unless i need them
SYNC is constantly OFF always!!!
Brightness is at 1-13 %, and i just boost it if i need it.
Keep in mind im a light phone user. I mostly use my N1 for data service.
Sindroid said:
SYNC is constantly OFF always!!!
Brightness is at 1-13 %, and i just boost it if i need it.
Click to expand...
Click to collapse
Honestly, I don't think kernel has anything to do with your battery life. At least not much.
I constantly PUSH 2 email accounts (never turn it off), I always have WiFi, BT, 3G and GPS on. I never turn them off. My brightness is at least at 75%, sometimes at 100%.
I constantly check up on Pocket Empires (game) for about 2-3 minutes every 1-2 hours.. do about 10 min calls.. check engadget, browse xda through an app a little..
And I get 10 hours. If I set brightness/sync like you, I'd probably get that battery life too. I got Cyan 5.x (latest), Amon recovery, stock kernel, stock radio.
I'm happy with my batt life, I can always swap to another battery that's always charged on the dock.. but I use the phone to its fullest and never have to wait for gps/mail/wifi.
hah2110 said:
Even the iPhone can go longer than that (and I hate the iPhone).
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Click to collapse
Didn't think that I'd have to point out that iPhone has a 600MHz processor, 480x320 weak-ass screen and it only has 1 app running at a time?
DarkDvr said:
<10 hour battery life is not crap. With moderate use that's what u get.
Can't vote in this poll.
Click to expand...
Click to collapse
I agree 100%. (Except I drive an Evo, not an STI)...
I get ~10 hours and that's just fine and as I would expect for this phone.
I am delighted that some people get more, but their experience is the exception, not the rule.

Kernels on Froyo

So I get terrible battery life with .33.4 kernels (925 or 800) but got phenomenal battery on Ravens 800mv from 5/03. Are there any .33.3 kernels that will have the right drivers? How hard would it be to mod?
Thanks
Have you considered just sticking with the stock kernel? I'm getting phenomenal battery life with the stock Froyo kernel. Last I checked, i was at 46% after 28 hours unplugged (pretty heavy usage too - streaming music over 3G, several phone calls, tons of texting, youtube, web browsing)
r34p3rex said:
Have you considered just sticking with the stock kernel? I'm getting phenomenal battery life with the stock Froyo kernel. Last I checked, i was at 46% after 28 hours unplugged (pretty heavy usage too - streaming music over 3G, several phone calls, tons of texting, youtube, web browsing)
Click to expand...
Click to collapse
My battery is getting raped on froyo almost to the point that I want to roll back to enoms 2.1
r34p3rex said:
Have you considered just sticking with the stock kernel? I'm getting phenomenal battery life with the stock Froyo kernel. Last I checked, i was at 46% after 28 hours unplugged (pretty heavy usage too - streaming music over 3G, several phone calls, tons of texting, youtube, web browsing)
Click to expand...
Click to collapse
what do you do to get that much battery? my battery life isnt so good on froyo
I tried stock. Wasn't great but was better than avs.
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Sent via the XDA Tapatalk App
all kernels are going to depend on how much you play with it, and what you have running. if you don't have a load of widgets, background data, bluetooth, etc running, you should get decent battery life.
the more crap you run, the more energy it takes. common sense.
timothydonohue said:
all kernels are going to depend on how much you play with it, and what you have running. if you don't have a load of widgets, background data, bluetooth, etc running, you should get decent battery life.
the more crap you run, the more energy it takes. common sense.
Click to expand...
Click to collapse
This!
And I am getting pretty good battery life off the stock Froyo kernel. Actually, I am only draining at 2.2% an hour, and have had my screen on for 1hr 57 minutes, and the device off the charger for 14 hours. I have also made about 45 minutes of phone calls, and let it download with the screen off a bit.
Personally I have similar battery life to what I was getting on cm with uv/oc kernal. It does appear like it might be a little worse but I need time to be sure. Regardless I have gained small but real improvements with battery life on both cm and enom using the custom kernals and I have no reason to expect another result with froyo. Since battery life isnt exactly something I would describe as gratuitous on the N1 I will be kernaling up as soon as one looks like it actually works without issues. Right now thats not exactly the situation as I read down in development. There are a few usb mounting issues going one way and no cam going the other. Hopefully there will be a more hashed out kernal soon as the guys get more time to play with it. So getting back to the begining you ought to have something to work with shortly.
So no one will ever get the old kernels working with Froyo, huh?
If only I could find one that worked well without the USB dismount issue or the wifi issue, everything I've tried has failed. IMO 2.6.34 so far has worked best for me but has the dismount issue. I've tried four so far and none of them work well. I did get pretty proficient at moving zip files from dropbox to the sd card though.
Battery life seems to be so across the board dependent on so many variables that it sometimes seems like it's not even worth trying to gauge other people's experiences. I've tried numerous ROM/Kernal/Usage/Setting combinations and have never gotten what I'd consider to be 'good' battery life. 2.2's no exception.
I just ended up buying this 2 battery and external charger pack off of eBay for 20 bucks and admitting defeat. Our superphones are luck of the draw it seems when it comes to battery life. I'd follow someone's set up to the letter and get nowhere near the battery life they claim to get. I can turn off syncing, keep the screen dim, run a kernel that's supposed to get great battery life, and still get around 3%-5% drain per hour on standby.
My morning routine has me use bluetooth stereo headphones for about 25 minutes on the metro while I look at a couple of webpages. From out the door fully charged I'll be down to around 82% when I get into the office. To me, that's laughably terrible, but it's the only life I've ever known with my Nexus One.
halorin said:
Battery life seems to be so across the board dependent on so many variables that it sometimes seems like it's not even worth trying to gauge other people's experiences. I've tried numerous ROM/Kernal/Usage/Setting combinations and have never gotten what I'd consider to be 'good' battery life. 2.2's no exception.
I just ended up buying this 2 battery and external charger pack off of eBay for 20 bucks and admitting defeat. Our superphones are luck of the draw it seems when it comes to battery life. I'd follow someone's set up to the letter and get nowhere near the battery life they claim to get. I can turn off syncing, keep the screen dim, run a kernel that's supposed to get great battery life, and still get around 3%-5% drain per hour on standby.
My morning routine has me use bluetooth stereo headphones for about 25 minutes on the metro while I look at a couple of webpages. From out the door fully charged I'll be down to around 82% when I get into the office. To me, that's laughably terrible, but it's the only life I've ever known with my Nexus One.
Click to expand...
Click to collapse
It is terrible and I was in the same boat as you. I found the kernel from 4/29 800mv and 5/03 800mv to be the big winners for me. Any other kernels and my battery drops like dead weight.
hah2110 said:
It is terrible and I was in the same boat as you. I found the kernel from 4/29 800mv and 5/03 800mv to be the big winners for me. Any other kernels and my battery drops like dead weight.
Click to expand...
Click to collapse
Hm.. You're talking about Intersect's I'm assuming? How do they fair with Froyo? I'll have to try to track those down.
halorin said:
Hm.. You're talking about Intersect's I'm assuming? How do they fair with Froyo? I'll have to try to track those down.
Click to expand...
Click to collapse
Ya. The two kernels I mentioned are the ones that had me going 1.5-3 days depending on usage.
In right there with you guys. I unplugged at 8am and now its 10am and I'm at 78% this is how its always been.
I downloaded the 5/03 one and I'm trying that one out now, thanks. Maybe we'll see some improvement. It sucks to lose the ability to record video for a chance at battery life on par with what I'd get on a RAZR, but that's the world we live in.
halorin said:
I downloaded the 5/03 one and I'm trying that one out now, thanks. Maybe we'll see some improvement. It sucks to lose the ability to record video for a chance at battery life on par with what I'd get on a RAZR, but that's the world we live in.
Click to expand...
Click to collapse
Your RAZR doesn't have a 1ghz processor and a 3+" screen either... I'm not happy either but I'm just sayin'...
THATTON said:
Your RAZR doesn't have a 1ghz processor and a 3+" screen either... I'm not happy either but I'm just sayin'...
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Click to collapse
True enough, but phones in the same category perform much better than ours in terms of battery life, and they never made the claim to be 'superphones'. And AMOLEDs are designed to not use a lot of juice, but HTC somehow botched that idea, from my research.
halorin said:
True enough, but phones in the same category perform much better than ours in terms of battery life, and they never made the claim to be 'superphones'. And AMOLEDs are designed to not use a lot of juice, but HTC somehow botched that idea, from my research.
Click to expand...
Click to collapse
I agree... Hopefully the "final" release of Froyo will have an updated kernel addressing the battery life. To be, it's not a big deal because I am always near a charger but it would be nice to be able to get through an ENTIRE day of heavy usage without worrying about the battery dying.
I havent had a smartphone recently that could didn't need to be charged every night. I would love better battery life as I jmake it through weaker usage days at about 40% moderate usage at about 25% and with heavy use I have to find a way to get plugged in to get through. Still, reading how other similar phones (large screen 1 ghz etc) are doing leads me to believe that the N1 is roughly comparable. I'm not sure how you can compare a modern smartphone to a far less power hungry (and capable) feature phone that a person almost certainly did less with over the course of a day?

Reasonable battery life expectations after Rooting

So sorry for adding to the battery life threads, but I'm pretty frustrated.
I've seen people posting screen shots with 18 hours uptime, 7 hours wake time and 50% battery on custom roms. I've seen people getting about 24 hours on a single charge.
I've had my evo 2 weeks now, and I've tried about 3 different ROMS and 4 or 5 different Kernels all of which promised LONG battery life. I'm currently running BakedSnack 1.7 with Kernel #5. My phone has been on 10 hours, 2 hours of wake time and it has only 35% left. Couple of short phone calls, 10 mins Pandora and a bit of browsing and texting here and there. I was expecting more after rooting, yet it seems almost the same as it was before I rooted.
Am I expecting too much ?
I've gone through the full discharge/recharge cycle about 4 times so far. Bad battery perhaps ?
will the phone charge get you through a day say 10 hour work day ( includes travel time )
imho your expecting to much with 10 hours in to your charge and still have 35% left is pretty damn good imho
Baked Snacks is a great rom ! its no the battery check your TWS
Depends what you are doing, some things (3d games, flash) will drain the battery faster than others.
If you are at 10 hours and 2 hours awake with 35% left, thats not too bad. You should end up around 16-17 hours with 4 hours of awake time.
If you are talking on the phone, that will drain your battery the fastest.
Make sure you completely condition your battery as well (as many posts show)
Sporkman said:
will the phone charge get you through a day say 10 hour work day ( includes travel time )
imho your expecting to much with 10 hours in to your charge and still have 35% left is pretty damn good imho
Baked Snacks is a great rom ! its no the battery check your TWS
Click to expand...
Click to collapse
It will make it through but usually by 5pm its around 30%. I almost have to make an effort to use it sparingly though. I really like the Baked Snack Rom, its very slick probably the best I've had so far. TWS was 3% today.
Bielinsk said:
Depends what you are doing, some things (3d games, flash) will drain the battery faster than others.
If you are at 10 hours and 2 hours awake with 35% left, thats not too bad. You should end up around 16-17 hours with 4 hours of awake time.
If you are talking on the phone, that will drain your battery the fastest.
Make sure you completely condition your battery as well (as many posts show)
Click to expand...
Click to collapse
I haven't even gotten into playing games or watching video on it yet to be honest and my phone calls are usually short.
30% by 5 stop please be happy with that lol
goon3r said:
So sorry for adding to the battery life threads, but I'm pretty frustrated.
I've seen people posting screen shots with 18 hours uptime, 7 hours wake time and 50% battery on custom roms. I've seen people getting about 24 hours on a single charge.
I've had my evo 2 weeks now, and I've tried about 3 different ROMS and 4 or 5 different Kernels all of which promised LONG battery life. I'm currently running BakedSnack 1.7 with Kernel #5. My phone has been on 10 hours, 2 hours of wake time and it has only 35% left. Couple of short phone calls, 10 mins Pandora and a bit of browsing and texting here and there. I was expecting more after rooting, yet it seems almost the same as it was before I rooted.
Am I expecting too much ?
I've gone through the full discharge/recharge cycle about 4 times so far. Bad battery perhaps ?
Click to expand...
Click to collapse
Have you tried SetCPU? I have stock rooted with SetCPU (Perflock Disabler ftw) and without a signal 13-25% of the time (meaning the phone is searching for a signal), I end a 10-12 hour work day with about 45-50% left. Underclocking to 250 while the screen off has helped a lot.
This seems to be a common concern. first please remember to take everything with a grain of salt when it comes to people reporting there battery times. There are just to many factors to say ok if you use this rom and this kernel you will get 20 hours of battery life. Also many of the people reporting battery life exaggerate. sure they may ahve gotten 50 hours between charges on stock battery... but they surely didn't have moderate use ... or any real use during that no matter what they claim.
from another post it seems the majority of people in that post (with everything tweaked calibrated and set up) were getting roughly 13-18 hours of battery life out of there phone with normal use. normal being defined by actually using your phone as a phone as well as using its other capabilities. So my feeling if you are a moderate user you should expect to fall into this area as a goal. Things to help would include setCPU, making sure you turn off data when you shut off screen (or getting a program to do so for you - juicedefender) and making sure you calibrate your battery and battery stats of your phone.
it seems like you are getting close to this range however you are having to watch your use to do so. as others have said the first thing i would do is get setCPU and set up a battery saving profile. read through some of the battery threads if you havent and look for setting changes that wont impact you tremendously but will help save battery (for example if you dont use landscape mode a lot you can turn off autorotation and save some battery). If you are using froyo and are running a task killer uninstall it since it doesnt work any way. While most settings will make a small impact together they should help get you to where you can use your phone moderately through out the day with out worries.
Sporkman said:
30% by 5 stop please be happy with that lol
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Click to collapse
Don't get me wrong here, the thread wasn't about me complaining, more about setting my expectations.
2 Years ago I had the first Touch Pro which would be dead by 3pm regardless of usage. At one point I had 4 batteries. I got the Touch Pro 2 a year later and it could go 2-3 days on single charge with normal usage. It was like night and day.
Granted this is a much more powerful device than either of those, but I feel like I've taken a step backwards with the battery situation.
ritzbrie said:
Have you tried SetCPU? I have stock rooted with SetCPU (Perflock Disabler ftw) and without a signal 13-25% of the time (meaning the phone is searching for a signal), I end a 10-12 hour work day with about 45-50% left. Underclocking to 250 while the screen off has helped a lot.
Click to expand...
Click to collapse
I tried out SetCPU but the phone was slugglish for me at times and once or twice I had to reboot.
I'm probably just gonna grab an extra battery and a desktop charger so I can charge one battery while the other is in use.
omegasun18 said:
Things to help would include setCPU, making sure you turn off data when you shut off screen (or getting a program to do so for you - juicedefender) and making sure you calibrate your battery and battery stats of your phone.
it seems like you are getting close to this range however you are having to watch your use to do so. as others have said the first thing i would do is get setCPU and set up a battery saving profile. read through some of the battery threads if you havent and look for setting changes that wont impact you tremendously but will help save battery (for example if you dont use landscape mode a lot you can turn off autorotation and save some battery). If you are using froyo and are running a task killer uninstall it since it doesnt work any way. While most settings will make a small impact together they should help get you to where you can use your phone moderately through out the day with out worries.
Click to expand...
Click to collapse
Thanks alot for those tips, I'll give SetCPU another go.
I haven't tried out Juice Defender but I'll look into that as well. Turning off Data when the screen is off might be just the thing I need!

My experience with flashing in the pursuit of better battery life.

So I upgraded my Pre for the EVO when it came out and have been using the same phone and battery since getting it. I found XDA and immediately started rooting and flashing. I started with Fresh and DC when those were about the only options. I use my phone fairly heavily as I am almost always listening to downloaded radio shows either thru a plugged in headset or a jawbone icon BT set. I would say that I averaged about 8 hours of battery life no matter what ROM and kernel combo I tried. This is everything from Fresh, DC, Virus, Warm, CM6, EViO, Evo-NonSense, MIUI, and all of the applicable kernels. The best I had gotten with all of the various combos was a little over 16 hours (with an SBC kernel), which I thought was AWESOME! Needless to say, I used Warm TwoPointTwo (including betas) for a while and touted its look, feel, performance, ease of use, and feature set alongside an SBC kernel.
I ALWAYS keep an eye on the development section for something to pique my interest and pull me away from my current setup. After trolling Lucid's thread for cm7 for a while, I took the dive when the official cm7 nightlies started rolling out. I have been with cm7 ever since. I also took advantage of savage and zendroid kernels and now savaged zen.
The longest I have gone so far is 2 days 10 hours! How? Well...conservative governor on an SBC savaged zen kernel and toggling mobile data off when not in use. Will that same setup work for you? Maybe. Unfortunately all EVO' s are not created equal.
Moral of the story? It takes alot of time, reading, and work to find the thing that works for your EVO. It was a pain to find the right combo, but it is worth all the work.
Thanks for your post. When you got the battery to last over 2 days, it looks like the phone mostly sat there, am I seeing that incorrectly?
I, like you, have tried all different things with the Evo trying to get battery and performance. I am locked on MIUI right now, it gives me the best of both worlds. If you want to try a Sense rom, try Ava's stuff. When I get "bored" with MIUI I will go back to Ava.
lehalter said:
When I get "bored" with MIUI I will go back to Ava.
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God will kill a kitten if you switch from MIUI. You don't want that on your conscience now, do you?
Yeah it really depends on your usage without it the 2 days 10 hours don't mean much. 2 days is no problem if I only use it to make a couple of calls. every 8 hours it only loses 4% charge when untouched with autosync on. The evo battery isn't bad it just takes tweaking like the op says
I get on average two complete days on a charge. With heavy usage I het like a day and a half, with light usage I can go 3 days. MIUI 1.1.28 w/ savage 1.6 kernel. I used to shut off my data too when I wasn't using it but with the MIUI build I'm on, I don't need to.
I really don't trust the battery use(in settings) in CM7 at ALL. I had my phone plugged into my car charger for 45mins on the way home tonight I unplugged it at 7:38pm.
It is now two hours later(10pm) it is showing I have been unplugged for10h55m9s on the posted screenshot. Then if you look at the other screenshot my battery indicator pro is showing the correct amount of time since unplugged.
I've noticed that the battery stats in cm7 do not reset unless you fully charge your phone. Otherwise it continues the count even if you plug a charger in.
Sent from my PC36100 using Tapatalk
_MetalHead_ said:
I get on average two complete days on a charge. With heavy usage I het like a day and a half, with light usage I can go 3 days. MIUI 1.1.28 w/ savage 1.6 kernel. I used to shut off my data too when I wasn't using it but with the MIUI build I'm on, I don't need to.
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MetalHead, do you overclock/undervolt? If so, would you mind sharing your settings? Lastly, have you noticed an increase in browser speeds since you flashed MIUI and tweaked your settings?
I know I need to come up with something. my battery drain is friggin' horrid.
Unplug @ 100%, turn the screen on, let it sit with nothing, pretty much, running in the background and in 10 minutes will be down to about 93%....
Tried several different combos, but all are pretty much the same results...
taadow1030 said:
MetalHead, do you overclock/undervolt? If so, would you mind sharing your settings? Lastly, have you noticed an increase in browser speeds since you flashed MIUI and tweaked your settings?
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I overclock at 1152 with smartass governor 98% of the time. Savage 1.6 is a HAVS kernel so I guess technically it is undervolted. I honestly couldn't tell you about the browser speeds, I've been on MIUI since the beginning of November so I really have no clue what the browser speed on a Sense ROM is. Everything is a lot faster with MIUI so I'm assuming my browser speeds have also increased.
HipKat said:
I know I need to come up with something. my battery drain is friggin' horrid.
Unplug @ 100%, turn the screen on, let it sit with nothing, pretty much, running in the background and in 10 minutes will be down to about 93%....
Tried several different combos, but all are pretty much the same results...
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Click to collapse
This is typical, unless you use an SBC kernel, bump charge your phone, or unplug it exactly when the light turns green.
Any non-SBC kernel will not keep the phone at 100% charge while on the charger. Some will argue that doing so is dangerous for the battery or methods like bump charging put too much wear on the battery.
This is most likely the reason that phone companies rarely have a true percentage shown on their batteries, because they all do this. If we didnt mod to get that real number shown, you would think your phone was acting just fine.
Personally, if I am really going to be using my phone a ton in one day, Ill bump charge it, but otherwise I just accept that its going to drop that first 10% really fast.
The best measure imo of battery performance is how much % you lose when the battery is somewhat discharged, and off. Every phone will drain while you use it, but most of the hours of a day, your phone is off and idle. If you lose 1% per hour, or 5% per hour, that will make a huge difference in your up time per charge.
Unfortunately, mine doesn't stop at that 10%. For instance, mine came off the charger at 5:30 AM at 100%.
By Noon, it was down to 70%, and I had 1 - 3 minute call, no texts and maybe 20 minutes of playing Klondike before work.
I guess I'm gonna have to go SBC. Worst that can happen is I end up buying a new battery, just incase it does so it in.
So in 10 minutes you drop 7%, and in the next 6 1/3 hours you drop another 23% with moderate use?
That sounds like pretty typical battery results to me, thats about 26 hours uptime with a fair amount of use. But maybe others could chime in.
Dude, 5 hands of a card game is NOT moderate use. It's practically no use. Klondike doesn't use data, GPS, etc... nothing, except minimal graphics.
The one phone call literally lasted less than 5 mins, so yes, a phone that drops 30% doing nothing is drastic.
I seem to get pretty good battery life on Myns rom.
I can go at least 24 hours with moderate usage, all on the stock kernel.
Looks like I may have found a little better stability with the Netarchy-Toast CFS 4.3.2 Havs SBC less.
30 minutes of moderate use today and it only dropped 5%
The best battery life I have gotten is from Feb 09 Plutonium.
Miks 4.5 4.2 sbc, gps on updating all every hour call, text, surf, angry birds all freaking day, and get 14 to 16hours every day
MIUI
Wow i have been wanting to try MIUI for a while and i definitely will now.
I'm getting pretty bad battery life with MIUI 2.11 on hw 003. Can anyone recommend a good kernel? I'm hesitant to try the SBC kernels based on the potential battery damage, so savaged-zen is out, also savage-zen seems to have issues with usb mounting.
Is there a link to savage 1.6 CFS, which I've read in a number of threads now is a good one. Speed is not imp, stability, bt+usb working and battery life is.

[Q] Concerning Overclocking

I think I've finally gotten a good grip on this Nook stuff, a million thanks to everyone here.
My Nook is where I want it to be currently with the latest CM7 stable.
It seems like everyone is overclocking and now I'm curious.
Do you guys keep the overclock on the entire time you're using the nook? Or do you turn it on when you need the extra performance?
Does it shorten the battery life by much?
Is it harmful at all to the hardware?
capnblackleg said:
I think I've finally gotten a good grip on this Nook stuff, a million thanks to everyone here.
My Nook is where I want it to be currently with the latest CM7 stable.
It seems like everyone is overclocking and now I'm curious.
Do you guys keep the overclock on the entire time you're using the nook? Or do you turn it on when you need the extra performance?
Does it shorten the battery life by much?
Is it harmful at all to the hardware?
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Click to collapse
Good questions. Overclocking is, on the surpface, something one would imagine harms our toys. Actually, most can handle well. It's all about the voltage and not so much anything else. Dal and others have worked out the tough stuff and provided us with some extremely useful kernals that noticably increase speeds (demonstrable with apps like Quadrant Standard or Smartbench) Apps run quicker and the overall experience is sweeter. Ondemand is the usual govenor I employ set on boot. (Running CM7.0.2 1.1 OC) Still getting a full day of use before recharging.
Usually it only kicks up to overclocked speeds when it needs it, cm7 can regulate it's clock speed pretty well depending on what setting you use.
technically overclocking will slightly shorten the life of the processor (uses more power, produces more heat). It doesn't really matter though as my battery will give out long before my processor, regardless of whether i overclock or not.
By that time i'll probably be thinking about buying the sweet new nook color 4 anyhow.
I have one of the handfull of Nook's that can run at 1.3 GHz, although I have it set to boot at 1.2 GHz to eliminate the occasional bootloop from trying to load up at max speed. Once booted I kick it back up to 1.3 GHz and leave it. My battery generally lasts 48 hours of light / moderate use with the display being the single biggest power hog.
48 hours of using seems impossible to me when I use my NOOK at work for FB and some little gaming (not 3D) and after 8 hours is at 50% of battery.
I use daily 300/1300 at On Demand and never had any problems with device.
Extra heat is harmful.So if the device isnt get so hot, then things are ok.
RASTAVIPER said:
48 hours of using seems impossible to me when I use my NOOK at work for FB and some little gaming (not 3D) and after 8 hours is at 50% of battery.
I use daily 300/1300 at Interactive and never had any problems with device.
Extra heat is harmful.So if the device isnt get so hot, then things are ok.
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Click to collapse
You're right 48 hours of use is impossible. To clarify.... I'm usually off the charger for about 48 hours... not 48 hours of use. I'm 20 hours off charger now, wifi running about 10 hours, screen on for 2 hours 24 minutes and battery at 53%.
hockeyfamily737 said:
You're right 48 hours of use is impossible. To clarify.... I'm usually off the charger for about 48 hours... not 48 hours of use. I'm 20 hours off charger now, wifi running about 10 hours, screen on for 2 hours 24 minutes and battery at 53%.
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When does the battery meter reset? Is it when you charge the battery back up to 100%?
I just got CM7 working and haven't had a chance to go through the entire battery yet but based on what I've seen so far I can maybe squeeze out 5-6 continuous hours of usage, does that sound reasonable?
Based on what I see it's significantly hungrier than the stock.
s52m3 said:
When does the battery meter reset? Is it when you charge the battery back up to 100%?
I just got CM7 working and haven't had a chance to go through the entire battery yet but based on what I've seen so far I can maybe squeeze out 5-6 continuous hours of usage, does that sound reasonable?
Based on what I see it's significantly hungrier than the stock.
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Click to collapse
Depending always on what U do during usage (different to play games or just browsing the internet), U should really have the hours U propose.
Soon the problem with the sleep will be solved and the autonomy will be back to normal.

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