[Q] Display literally destroying battery life - HTC Rezound

So across all roms I have tried the display literally destroys the battery life of my phone. While the screen is off I get fine battery life. But when the screen is on I can watch my percentage decrease about 2-3% every minute so after a half hour of browsing my battery is gone.
I have an extended battery as well but that just prolongs it slightly. The brightness is about half right now. Is this normal?

Does not sound Normal but display is the largest user of battery( unless one can use the phone with display off
I had as video streaming yesterday for 30+ min from 80% it went to 14%
haven't tried keeping just display on should try that ...test for tomorrow

NickTheMajin said:
So across all roms I have tried the display literally destroys the battery life of my phone. While the screen is off I get fine battery life. But when the screen is on I can watch my percentage decrease about 2-3% every minute so after a half hour of browsing my battery is gone.
I have an extended battery as well but that just prolongs it slightly. The brightness is about half right now. Is this normal?
Click to expand...
Click to collapse
I have my brightness set to 15% and it still sucks about half of my battery use. The display is unfortunately nearly unstoppable when it comes to battery drain. HTC and others are like "BIG PHONE DISPLAY!!!1!111!" we're all like "I can haz batteries?"
That description is the best description of our issue.
But an answer to your question, drop you brightness to as low as you can stand it and if possible try to limit the amount of times you wake the display in a day the juice it requires to turn it on is greater than it needs to sustain the screen on.

I would say yes for the most part. We have a fantastic and power hungry display...the price for greatness?
That being said, its not so bad dropped down to 25% or so, and easily viewable, except if you're outside.
Sent from my ADR6425LVW using Tapatalk 2

Alright thanks. I just wanted to make sure my phone wasn't experiencing something that is atypical. Other than that I do love this phone and the developers

It's hard to say. With screen on I loose about 1% a minute even with auto-brightness turned off and the screen at around 25%.
There are others on the forum that have made rather amazing battery life claims so it may come down the the individual device.
I have debated about returning mine for a different one to see if I get any better performance.

Diesel_71 said:
It's hard to say. With screen on I loose about 1% a minute even with auto-brightness turned off and the screen at around 25%.
There are others on the forum that have made rather amazing battery life claims so it may come down the the individual device.
I have debated about returning mine for a different one to see if I get any better performance.
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Click to collapse
I'm not sure I would bother chasing longer battery life with new devices. A lot of those are very optimized use cases -- either all on wifi, all in areas with great signal, or lots of screen on time but they don't mention what brightness. The fact of the matter is the phone has a tiny battery and uses up a lot of power for the display and radios. I get somewhere between 12-16 hours on a stock battery, depending on where I am and how much I use the phone (generally I'm a pretty light user, but I do leave 4G and Bluetooth on all day).

Related

[Q] Battery, Screen power and your mileage

Greetings,
First off I'd like to say that I absolutely love this device. I had the Evo 4G prior to this but about 3 months ago I dropped it on accident and destroyed my screen, then tried to replace the screen myself and it didn't go so well so I have spent the last 3 months using a Rumor touch to tide me over (). I'm happy with the Evo 3D beyond belief but I had a few questions to ask because I am not getting the amazing battery life that people have been so thrilled about.
First off I have background data disabled, auto sync is tuned down but not turned off completely (though it is turned off for things like htcsense.com and the like, only on for gmail and weather). I have adjusted the screen brightness down to around 20% but occasionally bump it up in high-light situations. I've also installed Juice Defender which helped a great deal, but I'm still noticing some strange behavior.
Is it common for the screen to be hogging the battery life like none other? I was able to go 14 hours yesterday with Juice Defender on, but i was also working for 12 of those hours and using my phone very little, so i'm willing to say that 80% of the time the phone was in standby/sleep mode (and i verified this by looking at up vs awake times). The thing that baffles me about this is that the battery usage says that the display used up 80% of my battery. How is this possible when the phone's screen wasn't even on that entire time, does the screen really pull that much power when its on?
My capacitive buttons are on full brightness while the screen is on no matter the light situation, is this as intended or could this be a defect drawing too much power?
Anyone else having battery problems?
i have issues when im at work with little to no signal which zaps the battery pretty hard, do you have issues with signal? (you can check under the batter graph, cell standy should list a percent without signal, mine yesterday was like 44 percent from being at work)
Other than that how long have you had the phone and have you calibrated the battery? It should improve over the first few charges, especially if you've calibrated.
That's odd, i have pretty decent signal here but under the "cell usage" i have 75% time spent without signal but the cell usage only was 8% of total battery use, and still 70% used for the screen. Does JuiceDefender turning off the 3g account for any of that 75% time spent without signal or is it truly phone signal loss
Sorry yeah I did calibrate the battery before the 14 hour period i was referring to.

70% battery use of display

I've had the 3vo since launch and lately my battery does hella fast. Whenever I check to see what has been using my battery it always says 60%+ screen and never 10%+ of anything else. I always have brightness dimmed and screen timeout at 30 seconds. Any ideas?
Sent from my PG86100 using XDA App
i know what u mean, i had the same problem but it eventually improved a bit for whatever reason. I think the main culprit is actually a wake lock thats causing the ****ty battery, not the display itself. Do you also have a high awake time?
The display usage being that high is actually a good thing. It means none of your other components are draining your battery excessively. The screen uses how much it is going to use and can't really run in the background and kill the battery like the cell standby, media server, and android OS could. I get great battery life, during a 10 hour shift at work my battery drops maybe 30% if I'm getting a lot of missed emails, calls, text. My display usage is 85%.
A thing to consider is that this is a percentage of battery use, not a microvolt value, so it's not really that useful for diagnosis just identification. One thing you could do is click each item listed and compare time on and CPU times listed.
Do you actually let the screen timeout every time or do you manually turn it off? Do you spend a lot of time using the 3D feature?
Basically if your phone is dying fast and display is the highest consumer, it is probably dying fast because you are using your phone a lot.
It simply means that your actually using your phone. People with 30 display is pretty much sleep sleep sleep. I get about 3-4 hours of onscreen usage.
Sent from my PG86100 using XDA Premium App
I had one device that would drain way quick...same situation as you, with only a couple hours screen-on time. 70%+ display usage...
I took it back and forced their hand to give me a new one.
It has been working a lot better, I still use the phone just as much but it lasts much longer. It may have been a defective battery but it's probably easier to just exchange the whole device.
Good luck.
rdwing said:
I had one device that would drain way quick...same situation as you, with only a couple hours screen-on time. 70%+ display usage...
I took it back and forced their hand to give me a new one.
It has been working a lot better, I still use the phone just as much but it lasts much longer. It may have been a defective battery but it's probably easier to just exchange the whole device.
Good luck.
Click to expand...
Click to collapse
oh yes, the old 'return it' solution. lol fail
I'm pretty well versed with most diagnostic techniques to pin down what was eating the battery; believe me I tried all of it.
Sleep time was good, no apps sucking cpu cycles.
When the display was draining 30% battery per hour I figured it was a faulty display or faulty battery. Easiest solution within 30 days was to exchange.
The new one works great.

[Q] Battery life

Well, this question is for my lucky friends who have their new toys
Battery life is so good?
Post your test here!
Don't have screens for ya but battery life is more than adequate. My gf and I used it for about 5 hrs last night and it dropped to about 45%
(Games, xda, Netflix, and just tinkering around)
I'm curious what kind of battery life you folks are seeing, now that you all have had time to get some real world experience with the NT.
Thanks!
10 hours of continuous usage with 25% brightness.
Sent from my HTC Mecha using Tapatalk
Yea, the battery life and responsiveness of the device is definitely top notch.
I'm pissed as hell the bootloader is locked, but this device is an absolute steal for $250 bucks. Especially if you can manage to discount that price down.
Extremely responsive and awesome battery life considering I'm running max brightness and wifi 24/7.
I'm always surprised when I'm done using the Nook that it was still running. Granted, I ran it until it had only had around 20% left. But hey, if your sitting in one spot using your nook for more than ten hours, then you need to find something else to do. ^_^
Lucifus said:
... if your sitting in one spot using your nook for more than ten hours, then you need to find something else to do. ^_^
Click to expand...
Click to collapse
Good book, nice day, under a tree? Done that many times just reading off my PDA.
Thanks for the feedback!
The battery life is definitely adequate.
I can usually go 2 day without charging thus far. I keep brightness at ~20% or so (I can't stand brighter, it actually bothers my eyes).
I also use multi-picture-live-wallpaper and it doesn't seem to drain my battery at all.
I do some pretty heavy use of it as I am reading on it and studying for med school for probably ~6 hours at a time
Battery life is great. BN's numbers seem dead on.
Lasted the flight from San Francisco to Sydney
I'm getting around 10 or so hours of use at 2/3 brightness. Battery life is amazing on this. I charged it last night. Took it off the charger at 10am didn't touch it till 10pm tonight. It was at 99 percent then. I think it turns off wifi when it's sleeping.
Drewmungus said:
I'm getting around 10 or so hours of use at 2/3 brightness. Battery life is amazing on this. I charged it last night. Took it off the charger at 10am didn't touch it till 10pm tonight. It was at 99 percent then. I think it turns off wifi when it's sleeping.
Click to expand...
Click to collapse
Yeah, it definitely turns wifi off on its own when sleeping
Yeah Ill echo the comments here, battery life is absolutely superb and the responsiveness of the unit for the price is fantastic. Sadly its a case of if only B&N....to fully realize what the tablet would be capable of.
I have to agree that battery life is amazing on this thing.
I've got wifi turned off full time (to avoid updates from B&N) and the battery just seems to last forever. Granted you always use less battery when you're not going online, but still, it seems to really really last.
Frankly it's making my phone quite jealous.
Umm, my nt's battery isn't as impressive as i hoped. I use 25% brightness, wifi on, no fancy live wallpaper. I noticed for every few minutes of sjurfing, battery would drop a percentage or so. For usage of about 3hr withoit wifi, i would use up about 40 %.
Anything i could do to tune it up a bit? I do noticed amazon appstore is always running, so is clock, contact, tb, and my yahoo mail app. Any help is appreciated.
rvr350 said:
Umm, my nt's battery isn't as impressive as i hoped. I use 25% brightness, wifi on, no fancy live wallpaper. I noticed for every few minutes of sjurfing, battery would drop a percentage or so. For usage of about 3hr withoit wifi, i would use up about 40 %.
.
Click to expand...
Click to collapse
That sounds about what I'm getting and I'm wondering whether it's defective or not (still within return window).
edit: Probably normal - ran into some threads on B&N's boards where other people are averaging 5-7 hours. If I idle / read, I get about 1% every 8-10minutes or so so B&N's time estimates were definitely not "video," "browsing" or "games." Wifi on, installing or rebooting a few times, it drops to 5-6 hours tops between 100% and close to 0%.
My phone gets -way- more time, even reading.
the battery on this is great one of the biggest things going for it. better than my phone for sure.
For you guys with bad battery life, you might want to try better battery stats. Then check for partial wakelocks. That's usually the culprit on my phone. It seems weird some of you are getting half the battery life of the rest of us. Personally I haven't even turned wifi off at all, and also haven't turned my brightness below half.
It's in the google market, it won't show up on the nook. I downloaded it on my phone then used the app share my applications then back up to sd. Upload to dropbox. Then download it with dropbox on your nook.
Drewmungus said:
For you guys with bad battery life, you might want to try better battery stats.
Click to expand...
Click to collapse
I looked at this (and other battery programs), but wasn't sure what they did. Now I sort of do. I'll check it out! Wifi on definitely uses up at least 20-25%ish extra battery, and I *have* been moving a ton of stuff to/from sd cards and uninstalling and rebooting a lot, but the above did seem very short. Too bad there isn't a battery hardware test
Failing those applications it may be worth doing a full reset; Especially since most other owners are reporting MUCH better results.
Before I start nuking things around, I used BetterBatteryStats, check for partial wakelocks, and the highest % is from ActivityManager-Launch, which occupies 0.3% or 5minutes or so since I fully charged it.
Also, i noticed "Wifi Locked" is extremely high, like 89%, whereas wifi On is only 26%. What does that mean?
I'm not fully versed in how Android handles power management. So what should i be looking out for? Thanks!

New Battery

So I started a new thread cos its kind of different to my other one. The last little niggle with my Prime seems to be the battery. I read the instructions for once and it said to charge it all up. So i charged it till it was green and then powered it up for the first time. So as the instructions say i need to break the battery in. At the moment i am getting about 5-6 hours. The pad is on balanced with auto brightness. Does this seem normal for new battery. I would hope to end up with 9-10 or are my expeditions too high?
From what I remember the instructions stated that for the first time you should leave the prime charging for 6 to 8 hours. I personally didn't follow this and I'm still getting pretty good battery life. My advice is to let the battery drain out and charge it to full again and leave it connected for at least a couple of hours. The battery should calibrate itself through a couple of charge/discharge cycles and get better over time. Forgot to add, I have my wifi set to turn off when screen goes off.
If you're on firmware .21 it may be due to wifi. Check your battery stats. I have great battery life but as soon as i turn wifi on and use it battery goes down waaay fast.
I hope the new firmware thats coming adresses that, because before .21 that wasnt the case.
mdemons12 said:
So I started a new thread cos its kind of different to my other one. The last little niggle with my Prime seems to be the battery. I read the instructions for once and it said to charge it all up. So i charged it till it was green and then powered it up for the first time. So as the instructions say i need to break the battery in. At the moment i am getting about 5-6 hours. The pad is on balanced with auto brightness. Does this seem normal for new battery. I would hope to end up with 9-10 or are my expeditions too high?
Click to expand...
Click to collapse
Lol i was too eager and only charged my prime until it reached 100% at a mall. But i still have great batterdy life
Sent from my HTC Vision using xda premium
People that didn't fully charge it up the first time for 6-8 hours, exactly what kind of life are you getting and could you please explain what things you are doing on it. I didn't charge it fully and it accidentally got turned on during its first charge.
Thanks,
If you are on .21 don't expect the battery to be near 8hrs while on wi-fi surfing/video/screen on/etc. I had it on .15 for 2-3 days while deciding if I wanted to root or not and it was near 8hrs wi-fi on. I'm also hoping for the next update to fix whatever they implemented in .21 that's causing a significant amount of drain.
I am on 4.0.3, is that the right one
Sorry, wi-fi is .22
Thr charging over night for 10 hours or whatever is nowadays just a Myth that came from the old NiCd batteries (It was true back in the day), new LiPo / NiMh batteries have no Memory Effect and the first charge is nowhere near as important as with old ones.
In fact is actually better not to stress the battery doing full discharges / charges cycles.
These batteries get to their full capacity after about 10 charging cycles.
So if you didnt not charge X hours for the first time, dont worry, yout battery ill work fine.
The only thing that should be pointed out is that if you use very often your battery, every 2 - 3 months is recommended to let the battery discharge to 0% and charge while off to 100%. If you dont use the battery often (always connected) then is better once every month. Thats to keep the internal chip from the battery calibrated.
Well atm i am draining it down to <10% then charging. Is it ok for these modern batteries to be left on charging past 100%?
Battery life still seems pretty poor after 3 0-100 ish charges. 1-2% seems to last less than 5 minutes when on the net on balanced mode and screen brightness mostly down.
mdemons12 said:
Well atm i am draining it down to <10% then charging. Is it ok for these modern batteries to be left on charging past 100%?
Click to expand...
Click to collapse
Yes, once the batteries are at 100% they stop charging. You can have them 100000 hours connected.. and they wont go past 100%.
im on .21 and i get great battery life. i never cut my wifi off. its on 24/7. battery drainage will more so be dependent on display brightness and what you are doing. wifi is already a known, wifi on any device drains battery at a faster rate than wifi off. it takes power to make wifi work ya know..lol i can easily get 9-10hrs. + with my brightness set to less than 25% & wifi on all the time.
also the two biggest drainers, as far as programs go, is gaming and web surfing. especially web surfing and especially while using flash. since web browsing is very ram intensive. I've noticed some browsers drain battery faster than other. Meaning some browsers are more optimized than others when it comes to power consumption. This shouldn't be nothing new. Everyone's battery drainage will be different because people use their device in different ways.
we have an update about to hit us any moment or day now so don't get too stuck on battery drainage on .21. it'll be time to test how it is on newer firmware.
demandarin said:
also the two biggest drainers, as far as programs go, is gaming and web surfing. especially web surfing and especially while using flash. since web browsing is very ram intensive.
we have an update about to hit us any moment or day now so don't get too stuck on battery drainage on .21. it'll be time to test how it is on newer firmware.
Click to expand...
Click to collapse
Web surfing and gaming and WiFi are 3 major things in this tablet, what should we use it for then??
here are some battery saving tips!
bimbobo said:
Web surfing and gaming and WiFi are 3 major things in this tablet, what should we use it for then??
Click to expand...
Click to collapse
That's what I'm saying. Everyone web browsing and gaming is different. Some web pages people visit might be loaded with flash content vs. Someone who visits a site with less flash content. The one with the loaded flash content will drain or use more battery than the other one. Same with gaming. I might like to play Dead Space or Shadowgun and you like to play hang man or some other simple game. The battery will drain faster with me playing the 3d graphic intensive games vs. The person who is playing simple or less graphical intense games.
Wifi is a must have and no way around that if you want to web surf. The amount of screen brightness, 3D gaming, and web surfing will influence how fast your battery drains. Wifi drains battery but not at a faster rate than those other things listed.
I think some people here expect to have brightness up to the Max with super ips+ on, gaming and web surfing all day and expect to get 10+ hours out of it. Lol. Its not happening. There are easily things you can check for and change to make you have better battery life. -
-First one being not to use auto brightness and don't have brightness higher than 25%. That's if you so concerned about making the battery last long.
-Second thing you can do is go into settings and change screen off display settings. I have mines set to 30 or even 15 secs. That means once 15 secs. Or 30 secs. Pass and I haven't touched the screen, the screen will cut off. That's a huge battery saver right there. Because my screen isn't on as long when its not in use.
-Third would be to go into settings and lower the frequency of sync settings. I don't need my email syncing every 5mins. Or my Facebook syncing every 5 mins or etc.. cut them down to maybe every hrs, or every 12 hours, or once a day. The best would be to sync when you open up the app instead of it doing it automatically in the background. Completely cut off sync to apps you never use. Constantly having things sync in the background is a major battery drainer when the screen is on or even while device is sleeping. If you put device to sleep and its always waking up to sync data, don't be surprised if battery drains at a faster rate during sleep or when device is awake.
-Fourth, cut of unneccessary sounds. Do you really need the keyboard or screen presses to make a sound when you press it? If so, don't be surprised your battery draining faster.
-Fifth, cut off that stupid vibration motor. Do you really need your tablet to vibrate when ever you press something on the screen or keyboard? Do you really need it to vibrate when your gaming? If so, don't be surprised your battery is draining faster then. Because everytime that vibrate motor goes off, it drains battery.
SIXTH, you can go into settings and have wifi cut off when device is asleep. Or you can go into Asus customized settings and have it cut off network activities when the screen is off or device is asleep.
All very easy steps people can take. Same thing as in saving gas in a car. There's things you can do or not do to make it last longer.
mdemons12 said:
So I started a new thread cos its kind of different to my other one. The last little niggle with my Prime seems to be the battery. I read the instructions for once and it said to charge it all up. So i charged it till it was green and then powered it up for the first time. So as the instructions say i need to break the battery in. At the moment i am getting about 5-6 hours. The pad is on balanced with auto brightness. Does this seem normal for new battery. I would hope to end up with 9-10 or are my expeditions too high?
Click to expand...
Click to collapse
Its Def the firmware Asus should fix it soon hopefully
Sent from my Transformer Prime TF201 using XDA
It does seem to be getting better though. I have had it on for over a day now and it is at 50%. Probably had a good 3ish hours of actual use. During the breaking in of the battery stage is it better to let it drain then fully charge or charge whenever I can?
demandarin said:
im on .21 and i get great battery life. i never cut my wifi off. its on 24/7. battery drainage will more so be dependent on display brightness and what you are doing. wifi is already a known, wifi on any device drains battery at a faster rate than wifi off. it takes power to make wifi work ya know..lol i can easily get 9-10hrs. + with my brightness set to less than 25% & wifi on all the time.
also the two biggest drainers, as far as programs go, is gaming and web surfing. especially web surfing and especially while using flash. since web browsing is very ram intensive. I've noticed some browsers drain battery faster than other. Meaning some browsers are more optimized than others when it comes to power consumption. This shouldn't be nothing new. Everyone's battery drainage will be different because people use their device in different ways.
we have an update about to hit us any moment or day now so don't get too stuck on battery drainage on .21. it'll be time to test how it is on newer firmware.
Click to expand...
Click to collapse
Well hopefully after a few charges I will make my way unto that region, I think it has climbed though to a closer to 6-6.5.

Awful Battery Life

My battery life is ridiculous. It doesn't use that much when the screens off but when it's on it uses 10% in about 15-20 minutes. I'm on a sense 4 rom and on senseless it's not much better. Even if I'm streaming music with the screen off, it's okay. It seems the screen is using a massive amount. Is there anything I can do? Thanks
davidetkin511 said:
My battery life is ridiculous. It doesn't use that much when the screens off but when it's on it uses 10% in about 15-20 minutes. I'm on a sense 4 rom and on senseless it's not much better. Even if I'm streaming music with the screen off, it's okay. It seems the screen is using a massive amount. Is there anything I can do? Thanks
Click to expand...
Click to collapse
Nope. Thats typical.
You'll get around 4 hours or so of continuous screen-on time, and thats IF you start with a full battery...
davidetkin511 said:
My battery life is ridiculous. It doesn't use that much when the screens off but when it's on it uses 10% in about 15-20 minutes. I'm on a sense 4 rom and on senseless it's not much better. Even if I'm streaming music with the screen off, it's okay. It seems the screen is using a massive amount. Is there anything I can do? Thanks
Click to expand...
Click to collapse
i get 2 hrs screen on. less if im playing games, currently im obsessed with dead trigger. ive been playing with my phone plugged in....
You can try slim rom. It worked a little for me. I have the same issue you're describing. Tho for me I also get drain while the screen is off as well due to being in a poor reception area most of the day. Also make sure ur brightness is no higher than 30%. Its just the phone man. The screen is a hog. Honestly I've Bern wondering if there's a way to turn off every other pixel on a hardware level or something cause frankly its ridic.
Sent from my ADR6425LVW using xda premium
Yep, the screen's the culprit, and it's pretty bad. Try JuiceDefender. If you get one of the advanced versions you can really conserve battery power while the phone's not in use, which will extend the power available for screen-on use. Also, you can reduce the CPU speeds a bit, which will also reduce draw and lower the heat.
I use JD Ultimate. My idle/standby time is now very nice, but as others have said there's only about 4 hours of use with the screen on.
I keep hoping the reason for the ICS release delay is because they're working on battery life issues. :sigh:
Thanks guys. I guess it just isn't great on battery life. I've tried juice defender and stuff like that but i was never a fan. I'll give it another try. It sucks to have 50% and the next time I look it's at 40... Haha. Is auto brightness better that doing it yourself?
Turn off any auto syncing and location services if they're not needed.
Sent from my Galaxy Nexus using Tapatalk 2
davidetkin511 said:
Thanks guys. I guess it just isn't great on battery life. I've tried juice defender and stuff like that but i was never a fan. I'll give it another try.
Click to expand...
Click to collapse
I wouldn't bother, JD has never worked well at all in the Rezound.
I have one of the paid for advanced versions of JD and I don even bother installing it anymore. I think my battery life was actually worse when running that.
My solution now is to use a mugen 4000 battery. That battery lasts so long I don't even bother to set a screen timeout anymore.
jmorton10 said:
I wouldn't bother, JD has never worked well at all in the Rezound.
I have one of the paid for advanced versions of JD and I don even bother installing it anymore. I think my battery life was actually worse when running that.
My solution now is to use a mugen 4000 battery. That battery lasts so long I don't even bother to set a screen timeout anymore.
Click to expand...
Click to collapse
Do any of those battery saving apps work?
I'm not crazy about big batteries. How is their 1900 one?
I've got about 15 hours once off newts sense 4 rom but with like 2 hours screen time. Screen time is really all that matters in deciding if ur battery lasts 5 hours or 15, unless u have things like music going on while the screen is off, but 2 hours or so is about all the screen time I can get
about 4 hours screen on with standard and 6 hours with ext battery
Same here, I've gotten up to 14-15 hours on a single charge, but with twoish hours of screen time. Other than the screen being a battery murderer on this phone, I've noticed that having poor reception really wreaks havoc on the battery also. I live in the sticks of PA where I'm in a crossover area, and continually switch between 2-4 bars signal of 1x, 3G, and 4G. And if I don't have a stable signal for a while, the phone will actually heat up and start discharging the battery due to constant searching for a signal. Sitting at work, full strength 4G signal, it only heats up when the screen is on for an extended period of time.
jmorton10 said:
I wouldn't bother, JD has never worked well at all in the Rezound.
Click to expand...
Click to collapse
JuiceDefender works fine on the Rezound. The problem is that the Rezound doesn't benefit from JuiceDefender as much as other phones do, mainly because it suffers from a different problem than other phones.
JuiceDefender's strategy is to shutdown nearly every radio and process in the phone when the screen is off and there's no active communications. This works, in the sense that if you turn off the screen with 98% power, you can turn it back on a couple hours later and the phone will still have 94% battery remaining. You won't get that kind of battery life if you're running a bunch of widgets and syncing email without JD.
But the Rezound's incredible screen (and even now it remains one of the very highest quality displays in the industry) draws a lot of juice when it's running. Not coincidentally, this is also the time when the dual cores are running at maximum speed, and the heat you feel on a Rezound that's been screen-on for a few minutes is the milliamps getting sucked from your battery.
Still, JuiceDefender can help here, too. You can tinker with the brightness curve to reduce your backlighting even with the dimmer set to "Auto," and you can tinker with the CPU speeds and the governor strategy. The phone does not need to run both CPU cores at full speed to feel responsive, and yet that's what it does by default. In the Ultimate version, anyway, JuiceDefender does a good job of capping that. In fact, with the right settings I can operate my phone indefinitely without overheating it. And any heat you can't feel is energy that's staying in the battery.
JuiceDefender does work. But it helps to have reasonable expectations. That display does draw a lot more current than most other phones, and this does limit your screen-on time no matter what else you do to conserve power.
I never really cared for JuiceDefender back when I used it on my Evo 4G. It seemed to just barely save me any battery and having to wait for the radios to turn back on after every unlock was annoying me.
I will suggest that if you have the Facebook app and you're regularly using it, it might be taking up tremendous amount of battery. If you want to keep using it, at least disable it from syncing.
Also, TurboProp works pretty nice in extending my battery life. I don't think it's just a placebo, either. I can go over 24 hours on a single charge thanks to it, and that's for the stock battery, too.
cpurick said:
JuiceDefender works fine on the Rezound. The problem is that the Rezound doesn't benefit from JuiceDefender as much as other phones do, mainly because it suffers from a different problem than other phones.
JuiceDefender's strategy is to shutdown nearly every radio and process in the phone when the screen is off and there's no active communications. This works, in the sense that if you turn off the screen with 98% power, you can turn it back on a couple hours later and the phone will still have 94% battery remaining. You won't get that kind of battery life if you're running a bunch of widgets and syncing email without JD.
But the Rezound's incredible screen (and even now it remains one of the very highest quality displays in the industry) draws a lot of juice when it's running. Not coincidentally, this is also the time when the dual cores are running at maximum speed, and the heat you feel on a Rezound that's been screen-on for a few minutes is the milliamps getting sucked from your battery.
Still, JuiceDefender can help here, too. You can tinker with the brightness curve to reduce your backlighting even with the dimmer set to "Auto," and you can tinker with the CPU speeds and the governor strategy. The phone does not need to run both CPU cores at full speed to feel responsive, and yet that's what it does by default. In the Ultimate version, anyway, JuiceDefender does a good job of capping that. In fact, with the right settings I can operate my phone indefinitely without overheating it. And any heat you can't feel is energy that's staying in the battery.
JuiceDefender does work. But it helps to have reasonable expectations. That display does draw a lot more current than most other phones, and this does limit your screen-on time no matter what else you do to conserve power.
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Very good explanation cpurick. Totally agree with your assessment that the cpu cores need to be capped. Do you mind sharing your JD settings?

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