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Looking for proven and tested higher capacity battery for HTC Desire

As above, anyone using higher capacity battery for their HTC Desire and it is tested and proven to last longer than the original batter? Can post the link to purchase the battery?
Thanks!

Before you buy another battery, have you read this thread about calibrating your battery?

And have you installed a rom that allows underclocking? It makes a massive difference.
I am now getting 20+ hours from my phone where as before underclocking I was getting 8 hours.
Same amount of usage, just underclocking when screen is off.

Erm.. I will go read about it, but because I want to retain as it is now, thats why I'm looking for an extended battery.
Sent from my Milestone using XDA App

bryant_16 said:
Erm.. I will go read about it, but because I want to retain as it is now, thats why I'm looking for an extended battery.
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What kind of battery life do you currently get? Before (accidentally) calibrating my battery I was getting around 10-12 hours, now I'm getting around 36-42 hours.

I'm looking for one that can last me more than 1 day.

Lennyuk said:
And have you installed a rom that allows underclocking? It makes a massive difference.
I am now getting 20+ hours from my phone where as before underclocking I was getting 8 hours.
Same amount of usage, just underclocking when screen is off.
Click to expand...
Click to collapse
Hey buddy, which app do you use for underclocking? Cheers,

bryant_16 said:
I'm looking for one that can last me more than 1 day.
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Well, I'm using the standard battery and have 26% remaining with "1d 10h" since unplugged (admittedly I haven't used the phone for that much in that time, just some internet usage, a couple of calls, but it's been constantly on WiFi or 3G to sync GMail).

Use SetCPU for underclocking, and use JuiceDefender to automatically turn off your data connection while the screen's off/locked.
It will still reconnect every 15 minutes to sync, and will remain connected as long as there's any continuing 3G traffic while the screen's off. Basically what it means is you're running one of the most power-consuming parts of your device only 1/15th of the time, which make a big difference. Text messages and voice calls come through instantly still - only things requiring a data connection like facebook, weather, twitter, etc will have any delay, and even then it'll only be 15 minutes at the most.
You can also try setting your phone to WCDMA-only, which means it won't be constantly trying to connect and maintain two radios simultaneously. GSM-only would be even better but depending on your carrier it might not work at all or might only work for voice.
With SetCPU try making a profile to automatically go into "powersave" mode when the screen's off, which will ensure the CPU never clocks up past its minimum speed during that time. It's still over 200 mhz, more than enough for anything you might want to do in the background. For normal operation, between 499 and 768 mhz as the maximum clock, depending on your preference, should be adequate and will save you a little bit of battery life as well all the time.
Also, download a widget to allow you to manually set screen brightness when you're indoors and the auto setting is useless. I have my screen brightness set to 15% while indoors and it's still plenty bright. I have the SLCD model, I don't know if that makes any difference.
My phone has been off the charger for 17 hours and 10 minutes. During that time, the screen was on for 2 hours and 29 minutes. I'm at 79% battery life with the standard battery.

Mugen 3200mah. Mine lasts a day with ease and heavy use.

paprkut said:
Mugen 3200mah. Mine lasts a day with ease and heavy use.
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Click to collapse
Yours able to charge it properly?

A small update to my previous post... I'm now at 32 hours, 38 minutes uptime, 4 hours 44 minutes awake time (screen on). Battery just reached 60 percent. Stock battery.
Remember when you made the choice to buy an Android, you were in effect saying you wanted to have a highly customizable miniature computer. Just like when you customize [insert your desktop OS of choice] to suit your taste, you need to configure your phone in order to get what you want out of it - namely, better battery life than with the standard settings.
HTC's goal with the Desire was to have a showpiece, it runs very fast and it looks good doing it. But they designed it with frequent charging in mind. Since most of us here, I imagine, would prefer to charge less often, we just need to configure the phone appropriately.
If you want a guaranteed solution, try this:
- Install NextSense rom (it's free, latest version right now is 5.3 AFAIK, I'm currently using 5.2 still)
- Install JuiceDefender - it's free on the market and its default settings are, for a change, very intelligent and effective.
- Install SetCPU - You can get it free on this forum. Set it to "interactive" mode with a bottom speed of 245 and a top speed of 806 to start with. The default is 998 at the top, but 200 mhz doesn't make a big difference in this case except to help battery life a bit. Once installed, add a profile for "screen off" which sets the phone to "powersave" mode. This will keep it running at the minimum clock any time you're not using it. Nothing running in the background while you're not even using the phone requires more than the minimum CPU speed.
- Install the Brightness Widget by Curvefish. It's free on the market. Put its widget on your desktop and keep your screen brightness at 25% while you're indoors. 15% is what I use, but 25% is one of the presets so it's a bit easier. I have an SLCD display so the brightness I get on auto might just be different from what OLED gets on auto, I don't know, but in any case for me it's way brighter than it needs to be.
- Set your screen timeout to no more than 2 minutes
- Make sure any apps that sync data do so in a reasonable interval. +/- 15 minutes won't ruin your day for most things.
- Under Wireless & Networks, set your phone's connection to WCDMA-only (3G-only). For many people this results in an increase to both signal quality and battery life, since it allows your phone to only run one radio at a time, making a significant difference. If it doesn't work for you, it's as simple as turning it back to the default setting.
- Disable haptic feedback and see if you mind the difference. Making all those little vibrations takes power too.
- Finally (obviously) don't run a live background, but you probably already know that.
Doing all of the above takes an hour or maybe two at most to set up and the difference in battery life is tremendous. It's simple to do, I worked out all of the above on my own and I've literally only had the phone for 4 days now I think, never touched a smartphone before in my life let alone an Android.
Give it a try, you have nothing to lose, and it will probably save you needing to buy a battery. Or, if you still buy a double-capacity battery, it'll mean you can run for like a week on a charge.
edit: also make sure to get the latest version of the radio driver, I don't have a frame of reference for comparison since I updated mine right away, but apparently it makes a fair bit of difference and probably gives you a more reliable cell signal in the process.
In case you think I'm exaggerating, here are some pics I just took.

What's the ideal settings for juice defender? Cos my phone is not rooted so I'm not going to use the SetCPU application.

What do you mean charge properly ??

Is it able to charge?

bryant_16 said:
What's the ideal settings for juice defender? Cos my phone is not rooted so I'm not going to use the SetCPU application.
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"Ideal" settings are basically the way it's configured by default. You can't improve upon them much even by getting the "premium" upgrade unless your phone is rooted... but SetCPU is a better choice in that case anyway.
Just install it, hit "enable" after it's done auto-detecting your phone's capabilities, and you're done. It's really that simple.
Be sure to add it to your task killer exclusion list if you use one.

You saying the default option is for SetCPU or Juicedefender?
So just download the free juicedefender is good enough for me already since the pro version is more for rooted phones? (mine is not rooted)

Can somebody pls. post the link to SetCPU?

cyron_at said:
Can somebody pls. post the link to SetCPU?
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http://forum.xda-developers.com/showthread.php?t=505419

bryant_16 said:
So just download the free juicedefender is good enough for me already since the pro version is more for rooted phones? (mine is not rooted)
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Yes exactly. The pro version unlocks some more customization but ultimately won't add a whole lot to your battery life no matter how it's set up. I mean, beyond what the "regular" version does.

The search for decent battery life.

I know I know that disabling data can get me 24-30+ hours of battery life. However for my on the go lifestyle, that's just not possible. I depend on my phone to keep my email updated. I have four email accounts (two of which are exchange) that sync calendars and contacts as well as email. I was using push on my two exchange accounts, but I've changed that to do every hour for one and every 15 minutes for the other. my other emails are set to check every hour. I have craigslist notifications set to check a single time per day. I have a weather widget that is only supposed to check every 4 hours.
I am running Perception 10.2 with the latest firebird 2 kernel, but have also tried various versions of speedmod's kernel. I have tried the following modems
JL1, JL2, JL3, JK4, KP1.
No matter what I cannot seem to get more then about 10 hours of battery life on standby ONLY. no phone calls, no turning the display on, nothing. I consistently get around 1 hour of time per 10% drain on my battery. I'm not asking for miracles. I just want my phone to be able to last at least 12 hours (a full work day plus drive time.)
I've already set the programs with the most spartan settings I am willing to use. I'd rather have my phone pushing data to my much more often, but I understand that's not going to be possible unless I can find a drastic increase in my battery life. What else can I do?

I have 3 email push accounts, and google voice syncing all the time. Email includes emails with attachments too, and EDGE is pretty much sufficient for most of these things. Even for normal day to day activities like browsing XDA, EDGE is pretty much sufficient.
So I would advise u to switch from 3G to EDGE. U can turn on 3G when u need more bandwidth demanding apps. This would reduce some strain on ur battery.
Only downside would be that u can't browse n talk on phone at the same time. But its ok by me to get a few mails after the call I am on is over. I can live with this small inconvinience in leiu of the additional battery gain.
As of this minute, with the configuration I have in my signature (am using xcal kernel), I have like 63% battery left after ~7.15 hours standby, with 1h31m of display on and 40m of calls, alongside mails being pushed.
Edit: At the end of my 'normal' day with 'moderate' usage (1-1.5 hours calls and 1.5-2 hour display being on (not for games/movies, but with active data transfer on like texting), I reach home with ~50-60% battery left.
On a side note: I would recommend to turn off updates in weather widget, and use a manual refresh when needed.

how do you easily toggle between 2G/3G? it's my understanding you have to use service menus to access the change.

asrrin29 said:
how do you easily toggle between 2G/3G? it's my understanding you have to use service menus to access the change.
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If u r on the ROM I am using, u can get it in network settings.
Some 2.2.1 ROMs do not have it in network settings. If ur ROM doesn't have it, u would need to access through the service mode code "*#*#197328640#*#*.
When in service mode, here is the sequence to select in the options:
option 1
option 8
option 4
option 3
Note: Pressing 'back' key will NOT take u back. It will close the service menu. Press the 'menu' key, and select 'back' to go back.
Be warned, this would not stick on reboot. U would need to repeat these steps whenever u reboot.
Alternately, I would suggest u move to a ROM that supports EDGE/3G switch. If the ROM supports this option in network settings, it would stick on rebooting too.

Yeah, I just found that. Perception supports switching, but you have to go to the settings menu to do it. I found something called Juice defender, and will play around with that as well. Unfortunately we aren't on an ASOP build, so we can't auto toggle 2G/3G, have to do it from the menu. I will report and let you know what I find!

asrrin29 said:
Yeah, I just found that. Perception supports switching, but you have to go to the settings menu to do it. I found something called Juice defender, and will play around with that as well. Unfortunately we aren't on an ASOP build, so we can't auto toggle 2G/3G, have to do it from the menu. I will report and let you know what I find!
Click to expand...
Click to collapse
Sure. By the way, I don't use any apps like juice defender. Realized that my battery is well off without them by taking care of little things like turning off wifi and bluetooth when not using them (well, these are the only two things I take care of manually).

I would normally agree with you, but as I was looking through the app I saw that it actually disables data while the phone is off, and only turns it on temporarily at intervals to allow application updates. If it truly works just like it states, I could have essentially a battery experience similar to turning off data while still enjoying my notifications. More experimentation is necessary.

asrrin29 said:
I would normally agree with you, but as I was looking through the app I saw that it actually disables data while the phone is off, and only turns it on temporarily at intervals to allow application updates. If it truly works just like it states, I could have essentially a battery experience similar to turning off data while still enjoying my notifications. More experimentation is necessary.
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Click to collapse
Juice Defender gives me 60 to 70 % more battery life. I have it set to sync every 15min and wifi is location based.

Yeah, Juice Defender works absolute wonders! it gives me the same amount of battery savings that switching to 2G gave me, but automatically enables and disables itself when I need it. I'm on 70% battery left with over 7 hours off the charger, and that was taking voice calls and doing some light email checking!

Try a kernel that supports OC/UV. You don't have to overclock, but undervolting is what you want. Check out Suckerpunch kernel. Nice guide by shaolin. Can't argue against a black belt. lol.

xdahgary said:
Try a kernel that supports OC/UV. You don't have to overclock, but undervolting is what you want. Check out Suckerpunch kernel. Nice guide by shaolin. Can't argue against a black belt. lol.
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Click to collapse
Unless I can only have it underclock while I'm not using it, I think I'll pass. I bought the Captivate for it's 1GHz proc, if I wanted something slower I would have gotten the aria.

You misunderstand. It's undervolt. That means use less power at different processing states.

xdahgary said:
You misunderstand. It's undervolt. That means use less power at different processing states.
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you can undervolt a proc without underclocking it? How is this possible, unless they changed the FSB or timings on the chip?

I pretty sure you can use voltage control and set highest state at 1000mhz and set lower voltages for states below it. That's as techincal I'm going to get.

asrrin29 said:
you can undervolt a proc without underclocking it? How is this possible, unless they changed the FSB or timings on the chip?
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Click to collapse
By running the chip slightly out of spec.
You can usually undervolt each cpu step by 50 to 150 mV. How to find the right point really does just take trial and error. And as with all overclocking/underclocking your mileage may vary. Some phones can really be pushed to the limits and run fine, others don't like even the slightest changes to the stock settings. All depends on how well your phone was put together, and from where in the wafer your CPU was taken from.
Undervolting can save you a fair bit of battery though. Won't help a whole lot when you're actually using the phone (since the screen and 3G/WiFi radios will suck way more power than the CPU), but it will help seriously increase your standby time.
PS While undervolting and overclocking capable kernels tend to be one and the same (since the underlying code is related) you DO NOT need to overclock your phone to undervolt the CPU. You can run your CPU at stock 1 GHz while still undervolting each frequency step. Course, with some tweaking and good luck, you can even get your phone to run at 1.2 or 1.3 GHz while still using no more power than a stock phone at 1 GHz.

How much battery gets used when the phone constantly switches between EDGE and 3G? I'm curious because my building has thick walls and my 3G signal constantly drops down to EDGE when I pick it up, then goes back to 3G when I leave it sitting out on my desk.

Shammyh said:
By running the chip slightly out of spec.
You can usually undervolt each cpu step by 50 to 150 mV. How to find the right point really does just take trial and error. And as with all overclocking/underclocking your mileage may vary. Some phones can really be pushed to the limits and run fine, others don't like even the slightest changes to the stock settings. All depends on how well your phone was put together, and from where in the wafer your CPU was taken from.
Undervolting can save you a fair bit of battery though. Won't help a whole lot when you're actually using the phone (since the screen and 3G/WiFi radios will suck way more power than the CPU), but it will help seriously increase your standby time.
PS While undervolting and overclocking capable kernels tend to be one and the same (since the underlying code is related) you DO NOT need to overclock your phone to undervolt the CPU. You can run your CPU at stock 1 GHz while still undervolting each frequency step. Course, with some tweaking and good luck, you can even get your phone to run at 1.2 or 1.3 GHz while still using no more power than a stock phone at 1 GHz.
Click to expand...
Click to collapse
Thank you for being the geek.

clydethecash said:
How much battery gets used when the phone constantly switches between EDGE and 3G? I'm curious because my building has thick walls and my 3G signal constantly drops down to EDGE when I pick it up, then goes back to 3G when I leave it sitting out on my desk.
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Any time your phone is forced to switch from 3G to Edge, or even from one band to another, it's not a good sign for your battery. Exactly how much power difference? Grab a multimeter and hook it up between your phone and battery. Record some data, and test for statistical significance. And let us all know.
Short of that, I'd say if you spend a lot of your day in an area with known bad coverage, I would hop into the engineering mode (*#*#0011#*#*), and lock your phone to a specific band and radio mode. Like 850 MHz EDGE, or 850 MHz W-CDMA. Or if you are in an 1900 area, then 1900 EDGE/W-CDMA. Not just EDGE or 3G mode, but a specific band AND radio mode. You need to be smart, and pick the band that has the best coverage so you don't make life even harder on your radio, but it can save some battery life over the phone jumping around ever time you walk from one side of the room to the other.

i running paragon 5.1 rom with the 1280mhz kernel overclocked to 1280 and undervolted. my phone has been unplugged since 7:30 am eastern time it is now 8:04 pm eastern and i have 73% battery left lol. i have done everything today on the web screwing around with my phone. the best rom so far and im even overclocked.

nate25 said:
i running paragon 5.1 rom with the 1280mhz kernel overclocked to 1280 and undervolted. my phone has been unplugged since 7:30 am eastern time it is now 8:04 pm eastern and i have 73% battery left lol. i have done everything today on the web screwing around with my phone. the best rom so far and im even overclocked.
Click to expand...
Click to collapse
Post usage stats please, like how long display been on, time spent on calls, etc.
Btw, does this ROM allow switching between 2G and 3G in the mobile network settings menu.

What is undervolting and how can it save my battery life?

I have a Nexus S with CM7.1 and I am using the Glados Kernel v1.10 BFS.... I have my clock speed from 100-1000 on conservative... my questions are, what does this do? How do I do it? And how much battery life can I usually save? I searched it up, and I haven't really found too much stuff in depth. Thanks
Sent from my Nexus S

I'm not sure anyone's even done any extensive testing, but I can tell you that kernels such as the Trinity SEUV kernel have a serious increase in batt life.
I'm talking 8+ hrs extra probably, at least. Now each person is different, so light users like myself will benefit more, but the difference is definitely noticeable.
That being said, it depends on the kernel you use, and how often you use your phone.

nickmv said:
I'm not sure anyone's even done any extensive testing, but I can tell you that kernels such as the Trinity SEUV kernel have a serious increase in batt life.
I'm talking 8+ hrs extra probably, at least. Now each person is different, so light users like myself will benefit more, but the difference is definitely noticeable.
That being said, it depends on the kernel you use, and how often you use your phone.
Click to expand...
Click to collapse
In the building I go to school in has nearly no service. I get edge at most when I find a spot, I had GPS on, brightness mid and all the same clock speeds.... my Vibrant got more battery life with the same clock speed on CM7, I had 27 when I left, I usually get 60something on my Vibrant. So what should I do, and how can I underclothing my device using setcpu?
Sent from my Nexus S

unvervolting , as you can see from this word , under --- voltage
battery output juice to hardware such as CPU , screen , antenna ... etc
let me make an exemple , let's assume one battery has "1500" juice , if you output 50 juices per hour , then you can last about 30 hours , follow me ?
unvervolting reduces this output juice , let's say , down to 45 juice (you can not reduce too much due to stability and something like that) , then you battery can last about 33.33 hours , this additional 3.33 hours comparing to 30 hours , is extra battery life you got by undervolting .
of course this is not exactly how it works , but more or less, i think you can take the idea of it.
duration of your battery is very much depending on your usage.
3G data connection and GPS are battery killer , i have brainmaster's MIUI + franco kernel , 100% battery = 2 hours 3G data = 1.5 hours GPS navagation.

Oops wrong thread

qtwrk said:
unvervolting , as you can see from this word , under --- voltage
battery output juice to hardware such as CPU , screen , antenna ... etc
let me make an exemple , let's assume one battery has "1500" juice , if you output 50 juices per hour , then you can last about 30 hours , follow me ?
unvervolting reduces this output juice , let's say , down to 45 juice (you can not reduce too much due to stability and something like that) , then you battery can last about 33.33 hours , this additional 3.33 hours comparing to 30 hours , is extra battery life you got by undervolting .
of course this is not exactly how it works , but more or less, i think you can take the idea of it.
duration of your battery is very much depending on your usage.
3G data connection and GPS are battery killer , i have brainmaster's MIUI + franco kernel , 100% battery = 2 hours 3G data = 1.5 hours GPS navagation.
Click to expand...
Click to collapse
At what level should I start undervolting? I have it at 800mhz with 1125MV on lazy, is that fine to start with? I keep rising it each time it crashes on me( I started from 1025, worked my way up when I got random freezes). Do you recommend another kernel or something? I want the most power with the most performance. I heard Trinity was good but I may need to revert back to stock because the thread advised me to flash from stock for the most promising experience.
Sent from my Nexus S

Smokexz said:
At what level should I start undervolting? I have it at 800mhz with 1125MV on lazy, is that fine to start with? I keep rising it each time it crashes on me( I started from 1025, worked my way up when I got random freezes). Do you recommend another kernel or something? I want the most power with the most performance. I heard Trinity was good but I may need to revert back to stock because the thread advised me to flash from stock for the most promising experience.
Sent from my Nexus S
Click to expand...
Click to collapse
Here are my settings, once again, good starting point.
http://forum.xda-developers.com/showpost.php?p=19258876&postcount=1889
Some users reported that they had to bump 100 and 200MHz to 900mv and 400MHz to 950mv. To each their own, we all have different phones.

i have been doing affect of various variables including uv on battery life...
by changing one variable at the time..
in my testin.. undervolting actually made battery drain worse...
http://caleb1783.tistory.com/258
polobunny said:
Here are my settings, once again, good starting point.
http://forum.xda-developers.com/showpost.php?p=19258876&postcount=1889
Some users reported that they had to bump 100 and 200MHz to 900mv and 400MHz to 950mv. To each their own, we all have different phones.
Click to expand...
Click to collapse
Sent from Divinus Nexus S...

I'm sorry, but I fail to see where exactly you've proven that undervolting gives a higher battery drain in those tests.
Your methodology isn't scientific enough, although decently documented you have different usage patterns depending on the day. Sometimes you're playing a game and browsing the internet, others you're just idling all day.
On the undervolt test with Franco 25112011 kernel, your undervolt isn't even stable, leading to a reboot during a game and a battery stats "bug". Your screen was on 26 minutes more. Just the fact your undervolt isn't stable will make your battery drain faster. There's not only reboots and force closes as symptoms to an unstable undervolt.
The good way to test it would be by using a much more controlled environment and test patterns. Airplane mode can be used so as not to suffer from a bad reception or receive text messages/calls, a task (or multiple tasks) can be ran for a very specific amount of time, no user input other than starting the task and stopping the task should be done and the undervolt should be deemed stable.
Anyway, I can and will vouch for undervolting components, whether on a smartphone or a computer. I'm sure Trinity kernel users would agree too.

Smokexz said:
At what level should I start undervolting? I have it at 800mhz with 1125MV on lazy, is that fine to start with? I keep rising it each time it crashes on me( I started from 1025, worked my way up when I got random freezes). Do you recommend another kernel or something? I want the most power with the most performance. I heard Trinity was good but I may need to revert back to stock because the thread advised me to flash from stock for the most promising experience.
Sent from my Nexus S
Click to expand...
Click to collapse
personally , i don't use undervolting , because it doesn't really effect too much on battery life
i didn't actually try , but i think undervolting could give you maximo extra few hours of battery life .
i'm using franco kernel , and 100 - 1000 with lazy governor
you minim should be 100 , 800 is not necessary
and for 1 GHz CPU , handle normal processing is enough
and i do think , that screen takes more juices than CPU ...
----------------------------------
i suggest you should try my way , buy an extra battery piece , then you won't worry about battery life any more ...
like me , i have to use phone very carefully back the time i didn't have second battery , sometimes i got out home about 8:00 AM ,and got back like 8:00 PM , when i back home , battery is nearly dead ... less than 10% .... = =
but now , i have second battery , i can use my phone whatever and whenever i want ...
i am in Spain , battery cost me 8 euros , if you can't find Nexus S battery , you can also buy Samsung i900's battery.
watch out , i900 , not i9000 , it's same battery , can be pluged-in in battery slot.
so , why did you waste days and days to search , to test , to set , to ask in order to get more battery if you can solve this problem with only 8 euors ???
but ... for real , these undervolting or overclock or underclock or what , does give you , hmm , how to say ? sense of fufillment , it's kinda good ^^

Some people enjoy travelling light, not having extra peripherals in their pockets and such. I already have enough stuff with my phone, keys and money clip without wanting to bring a battery somewhere in my dressy pants.

I read somewhere (and i think it was in this forum) that for the Nexus S the profile in SetCPU should be ondemand or conservative. I'm running Koush's Alpha 12, SetCPU "ondemand" and JuiceDefender Ultimate on "balanced". I've been on that for a week or so. I think the battery life is better than what i had running stock. I'm okay when the phone can make it through a day (like 16 hours) with normal use. I charge it at night anyway.

n00bfuscator said:
I read somewhere (and i think it was in this forum) that for the Nexus S the profile in SetCPU should be ondemand or conservative. I'm running Koush's Alpha 12, SetCPU "ondemand" and JuiceDefender Ultimate on "balanced". I've been on that for a week or so. I think the battery life is better than what i had running stock. I'm okay when the phone can make it through a day (like 16 hours) with normal use. I charge it at night anyway.
Click to expand...
Click to collapse
well , i think it depends on what kernel you use
some kernel's author would suggest what's best for his kernel.
also juicedefener or something , it's most likely by automatically shut down your unnecessary functions like GPS BT WIFI 2G/3G ...etc in order to save battery life.
i have been trying some of them , doesn't gimme much effect , probably it's just psychologic effect, you know , people would see what they want to see , also i have seen one application (Antutu something , i don't remember exact name) that reduces power output to hardware in order to save battery life , i think only that kinda applications can acutally save power...
---------- Post added at 09:03 PM ---------- Previous post was at 08:59 PM ----------
polobunny said:
Some people enjoy travelling light, not having extra peripherals in their pockets and such. I already have enough stuff with my phone, keys and money clip without wanting to bring a battery somewhere in my dressy pants.
Click to expand...
Click to collapse
i know , i do that when i have time , it does gimme sense of fulfillment , just like watch your work to be done .
it isn't about results , it's about journey you have been through
i don't know man , battery's size is just about 4.5 x 3.5 x 0.5 cm ... you really don't have that space for battery ... ?

qtwrk said:
well , i think it depends on what kernel you use
some kernel's author would suggest what's best for his kernel.
also juicedefener or something , it's most likely by automatically shut down your unnecessary functions like GPS BT WIFI 2G/3G ...etc in order to save battery life.
i have been trying some of them , doesn't gimme much effect , probably it's just psychologic effect, you know , people would see what they want to see , also i have seen one application (Antutu something , i don't remember exact name) that reduces power output to hardware in order to save battery life , i think only that kinda applications can acutally save power...
---------- Post added at 09:03 PM ---------- Previous post was at 08:59 PM ----------
i know , i do that when i have time , it does gimme sense of fulfillment , just like watch your work to be done .
it isn't about results , it's about journey you have been through
i don't know man , battery's size is just about 4.5 x 3.5 x 0.5 cm ... you really don't have that space for battery ... ?
Click to expand...
Click to collapse
Left pocket has my keys, my money clip with my cards and a pack of gum. Right pocket has my phone. Can't put anything worthy in back pockets, even less in dress pants.

What are common issues in installing Trinity over a kernel? I have Glados kernel so what would the side effects be?
Sent from my Nexus S

Smokexz said:
What are common issues in installing Trinity over a kernel? I have Glados kernel so what would the side effects be?
Sent from my Nexus S
Click to expand...
Click to collapse
it depends , look over your older kernel isntall zip file , check out if they put any files in directions (/system/lib , /system/modules , /system/vendor ...etc) , if so , delete them manually or check your new kernel zip file if it will overwrite the same named file ,in that case you don't have to detele these same named file because they will automatically be overwritten, otheriwse you do have to delete thoes file which won't be deleted or overwritten automatically.
...
i always just directly flash it ... if comes problem i just reinstall the ROM in order to get clean system and then flash the kernel.
some kernel like GLADOS and FRANCO has script to clear older files
but , anyway , back up before install any thing that could effect on system.
---------- Post added 14th December 2011 at 12:02 AM ---------- Previous post was 13th December 2011 at 11:58 PM ----------
polobunny said:
Left pocket has my keys, my money clip with my cards and a pack of gum. Right pocket has my phone. Can't put anything worthy in back pockets, even less in dress pants.
Click to expand...
Click to collapse
= = bro , doesn't your cloth have pocket ?
well , if you have protective case and screen protector on your phone , you can just put battery together with it
and you can put battery with your keys and other things.

qtwrk said:
it depends , look over your older kernel isntall zip file , check out if they put any files in directions (/system/lib , /system/modules , /system/vendor ...etc) , if so , delete them manually or check your new kernel zip file if it will overwrite the same named file ,in that case you don't have to detele these same named file because they will automatically be overwritten, otheriwse you do have to delete thoes file which won't be deleted or overwritten automatically.
...
i always just directly flash it ... if comes problem i just reinstall the ROM in order to get clean system and then flash the kernel.
some kernel like GLADOS and FRANCO has script to clear older files
but , anyway , back up before install any thing that could effect on system.
---------- Post added 14th December 2011 at 12:02 AM ---------- Previous post was 13th December 2011 at 11:58 PM ----------
= = bro , doesn't your cloth have pocket ?
well , if you have protective case and screen protector on your phone , you can just put battery together with it
and you can put battery with your keys and other things.
Click to expand...
Click to collapse
Yeah I just did that and it broke the wifi. I went to factory settings and installed Trinity, going through my normal routine tomorrow and going to see how long the battery life goes, apparently the performance is great at 880mhz and the voltage is pretty low.
Sent from my Xoom

qtwrk said:
it depends , look over your older kernel isntall zip file , check out if they put any files in directions (/system/lib , /system/modules , /system/vendor ...etc) , if so , delete them manually or check your new kernel zip file if it will overwrite the same named file ,in that case you don't have to detele these same named file because they will automatically be overwritten, otheriwse you do have to delete thoes file which won't be deleted or overwritten automatically.
...
i always just directly flash it ... if comes problem i just reinstall the ROM in order to get clean system and then flash the kernel.
some kernel like GLADOS and FRANCO has script to clear older files
but , anyway , back up before install any thing that could effect on system.
---------- Post added 14th December 2011 at 12:02 AM ---------- Previous post was 13th December 2011 at 11:58 PM ----------
= = bro , doesn't your cloth have pocket ?
well , if you have protective case and screen protector on your phone , you can just put battery together with it
and you can put battery with your keys and other things.
Click to expand...
Click to collapse
I sometimes have a dress shirt or a polo with an additional pocket. Nevertheless I like to travel light, buying a second battery, while a good idea, is a poor solution to an unoptimized system.

too much undervolting can and will cause more battery drain. there is a fine line that can be crossed from battery savings to battery loss. after a certain point, the phone will end up working harder to get where/what it needs because there isnt enough voltage, leading to the loss.

Smokexz said:
Yeah I just did that and it broke the wifi. I went to factory settings and installed Trinity, going through my normal routine tomorrow and going to see how long the battery life goes, apparently the performance is great at 880mhz and the voltage is pretty low.
Sent from my Xoom
Click to expand...
Click to collapse
you must know
this minim is for screen luck status , when you are using your phone , system/CPU will automatically change it to adapt your processing , but when you screen is off , CPU should be running at minim in order to save juices

Broken Battery?

So i bought a used HTC Sensation XE, came from a Moto Atrix 4g and have to say that i like the Sensation a bit more. I think its not even more snappy, i just think it feels much better both in my pocket and in my hand. paid 100€ so i was lucky to get a good deal. only problem i noticed is compared to my atrix (4.1 epinter), which runs with moderate usage nearly 48 hours without problems, is the battery. i noticed, when i was for example reading something, i coud see how my battery got empty in minutes. additionally i have to set brightness outside to 70% and still can hardly see whats on my phone if im not holding my hand aside to get some shadow. so i bought a new battery (1730mah) and it cycled 3 days now. but this morning when i was reading a summary of a book for school (brightness set at 10%) my battery was reduced from nearly 60% to 25% in 25 minutes. everytime i wanna check the news for more than 30 seconds i can see some percents just passing by
i thought this cant be, so maybe my (or all sensation's) display is the fault. on the one hand you cant read the display, if it isnt set on full brightness, if its sunny, and on the other hand its so battery expensive, that you cant even afford to use a good brighness setting.
does that mean the only way to get a full day is to just use it in the shadow?
is my new battery or is it just a crappy display? i love this phone, but its not really usefull like that.
oh, and can you read whats on your display if its sunny outside?
im using albinomans 4.2 build from 31 march with sultan kernel. cpu govenor is set on interactive, highest cpu frequency is 1620mhz.
so please tell me your experience and let me know if you got a solution :angel:
p.s.: sorry for the bad english, im in a hurry and not a native speaker

gurcki12 said:
So i bought a used HTC Sensation XE, came from a Moto Atrix 4g and have to say that i like the Sensation a bit more. I think its not even more snappy, i just think it feels much better both in my pocket and in my hand. paid 100€ so i was lucky to get a good deal. only problem i noticed is compared to my atrix (4.1 epinter), which runs with moderate usage nearly 48 hours without problems, is the battery. i noticed, when i was for example reading something, i coud see how my battery got empty in minutes. additionally i have to set brightness outside to 70% and still can hardly see whats on my phone if im not holding my hand aside to get some shadow. so i bought a new battery (1730mah) and it cycled 3 days now. but this morning when i was reading a summary of a book for school (brightness set at 10%) my battery was reduced from nearly 60% to 25% in 25 minutes. everytime i wanna check the news for more than 30 seconds i can see some percents just passing by
i thought this cant be, so maybe my (or all sensation's) display is the fault. on the one hand you cant read the display, if it isnt set on full brightness, if its sunny, and on the other hand its so battery expensive, that you cant even afford to use a good brighness setting.
does that mean the only way to get a full day is to just use it in the shadow?
is my new battery or is it just a crappy display? i love this phone, but its not really usefull like that.
oh, and can you read whats on your display if its sunny outside?
im using albinomans 4.2 build from 31 march with sultan kernel. cpu govenor is set on interactive, highest cpu frequency is 1620mhz.
so please tell me your experience and let me know if you got a solution :angel:
p.s.: sorry for the bad english, im in a hurry and not a native speaker
Click to expand...
Click to collapse
Hi,
Does Sultan kernel still do intellidemand?
If so,try that,and reduce your cpu frequency to 1180 mhz.
You are lucky to have sunshine outside...
But you cannot see the screen when it is bright.

Battery discussion, No more heat, 2 days battery life, Same Performance

The Problem With The S4 That It Has More Cpu Then It Needs. It Doesnt Have To Use It Cpu Up To 1600 Mhz, But It Automatically Does,
It Works Perfectly At 2 Cores And 800 Mhz, No Difference, Only A Better Experience , Please Read On
Ok Guys, This Will Be The Battery Discussion Page For The S4, We Will Be Doing Kernel And Under Volting Test, And Ways To Save Battery,
We Will Post Battery Records Here, And Many Other Things, This Is How It Works
I Will Post Mine Tomorrow After Fully Charging
Must Be Fully Charged Till 5 Percent Charge Without Pluging In Cable In Between,
And You Must Use Your Device As You Would Everyday
Install Cpu Spy
This Is The Layout You Fill In For Your Post
ROM:
KERNEL:
CPU MIN:
CPU MAX:
CPU GOVERNOR:
CORES ONLINE:
CORES OFFLINE:
Click to expand...
Click to collapse
Information Of How You Used Your Phone During The Process
And Any Other Information Like The Apps You Have Installed, And The App You Use To Save Battery With, Or Your
App Alternatives For Better Battery Life
Attach Photos (screenshots) Of Your Battery Record, Stats, And On Screen Time Using The Stock App In The Settings
And Your Cpu Spy Page
"i For One Have 2 Cores Offline And Under Volted To 250-800 On Both Online Cores And Have The Ondemand Governor Activated, And I Havent Felt Performance Lost, Runs Temple Run And Subway Surfers Perfectly, And No Heat, Even If Im Charging With Wifi On And Im Downloading Something, Its Great

Seems to be a nice idea. But could you elaborate as on why the text is bold and you had to use capslock for 1/2 of it!?

@slind ok i fixed the post. i will be posting links to the posts who are great battery savers without loosing performance

So basically, we use an I9500 like an Ace or a Grand to get rid of heating and battery drains.. Andyou suggest that it won't result in performance loss. I'd suggest playing games that are more graphically intensive and not just Temple Run.. Try copying data from one memory card to another, or simply try running a Full HD Video. Also, check out web browsing or maybe multitasking, and you'll see where the performance dies out.
I think the fix should come in the upcoming releases of stock firmware by Samsung. By turning off a couple of cores, you're only going back a couple of years. I don't think I upgraded from the S3 to S4 for that reason.

cabloomi said:
The Problem With The S4 That It Has More Cpu Then It Needs. It Doesnt Have To Use It Cpu Up To 1600 Mhz, But It Automatically Does,
It Works Perfectly At 2 Cores And 800 Mhz, No Difference, Only A Better Experience , Please Read On
Ok Guys, This Will Be The Battery Discussion Page For The S4, We Will Be Doing Kernel And Under Volting Test, And Ways To Save Battery,
We Will Post Battery Records Here, And Many Other Things, This Is How It Works
I Will Post Mine Tomorrow After Fully Charging
Must Be Fully Charged Till 5 Percent Charge Without Pluging In Cable In Between,
And You Must Use Your Device As You Would Everyday
Install Cpu Spy
This Is The Layout You Fill In For Your Post
Information Of How You Used Your Phone During The Process
And Any Other Information Like The Apps You Have Installed, And The App You Use To Save Battery With, Or Your
App Alternatives For Better Battery Life
Attach Photos (screenshots) Of Your Battery Record, Stats, And On Screen Time Using The Stock App In The Settings
And Your Cpu Spy Page
"i For One Have 2 Cores Offline And Under Volted To 250-800 On Both Online Cores And Have The Ondemand Governor Activated, And I Havent Felt Performance Lost, Runs Temple Run And Subway Surfers Perfectly, And No Heat, Even If Im Charging With Wifi On And Im Downloading Something, Its Great
Click to expand...
Click to collapse
post some screenshots with your screen time.

@adyscorpius
everyone has there preferences and there needs in a phone. and there own settings. and this is a Battery discussion thread. we will be doing many performance and voltage mods, so everyone could choose the settings that suits them. now please dont post aggressive post like that, im not stupid. i know that my settings are very low.
but for my most played games and most used apps. it doesnt seem to effect my performance, so im comfortable with my settings

i had the phone for 2 weeks, happily showing off battery performance and then i asked myself again, why the heck i bought this phone in the first place? BECAUSE IT HAS REPLACABLE BATTERY!.. LOL.. how silly i am trying to squeeze that little drop of power out of the battery when I can double the battery just by getting another spare.
no need to turn off anything, no need to drop performance or screen brightness.. just pure enjoyment of the full potential without worrying battery problem.. just get a spare.

cabloomi said:
@adyscorpius
everyone has there preferences and there needs in a phone. and there own settings. and this is a Battery discussion thread. we will be doing many performance and voltage mods, so everyone could choose the settings that suits them. now please dont post aggressive post like that, im not stupid. i know that my settings are very low.
but for my most played games and most used apps. it doesnt seem to effect my performance, so im comfortable with my settings
Click to expand...
Click to collapse
I didn't mean to be aggresive and sorry if you felt like that. All I mean is, there is a limit to which you can undervolt/underclock your phone without losing the functionality or speed. While underclocking to 1.0 ghz or 1.2 ghz sounds kinda normal, going all the way down to 800 Mhz and that too only on two cores is like running Galaxy Ace Dual Core instead. Why would I want to spoil my S4 for it?
That is all that I meant. And the phone is normally shelling out a good day's use in normal usage. Why bother so much about battery really???

My S4 i9505 came with MDE ROM from the factory, apart from doing dirty flashes over dirty flashes, finally someone came up with a recovery which is working. So i've :
1. Formatted system , cache , dalvik
2. Loaded in Djembey's stock slim deodexed ME2 ROM.
3. Using PimpMyROM, did some moderately less aggressive tweaks.
4. Capped the Max frequency at 1674MHz. Interactive gov, Noop sched.
5. Fully charged and unplugged.
6. Fully on 3G . Gmail sync for calendars, contacts, mail, keep, notes. Moderately heavy on Gtalk and Whatsapp. Browsing news and websites.
Observed 4 hours screen time.
Almost 15 hours of total usage + standby (This doesn't mean much, screen time depicts usage time more)
The phone still feels warmer than S2, under operation.
I've yet to try faux kernel yet, but i doubt it would get much better than this. The physical limit i feel is on the CPU, HD AMOLEDs, and the modem itself under normal usage.
Feel free to comment.

Hi,
hope you may be able to help. I have been trying almost everthing to increase the music volume as the s4 does not drive my senheiser headphones as well I would like. Is it possible to increase the gain through a kernel mod somehow?

Wow you're really random. This thread isn't even remotely discussing about the issue you raised.
Try the omega ROM thread, see if the functionality list includes volume hack.
Sent from my GT-I9505 using xda app-developers app

How does one go about disabling two of the cores ? c: