Related
First of all, hello to everyone. I have been reading through a lot of threads here in the last few weeks after getting my HD2, especially the ones about battery life.
I have never owned a smartphone, so I have no comparison but I'm barely getting through 1 day of use when fully charged! And I'm not even using it that much yet, Wifi is off, no data transfers, just some texting and calls. I have installed Bandswitch and Battlog, didn't really help though.
Got the phone brand new (T-Mobile US) and haven't done any major tweaking yet, it's still pretty much stock with a few programs that I installed so far.
Do you guys have a similar experience or is it completely different? I love the phone, but if I dont even get through one day of use (and I want to use the phone in the future, not just for surfing but for music streaming or web browsing), I would have to bring it back.
Any help appreciated!
It's just something you have to live with, buy a spare battery, or the extended battery, flash a lighter ROM, adjust screen brightness turn off push e-mails etc etc.
I can get 2 days battery from very light use. i.e. a few texts and calls a day, no Wi-Fi, bluetooth or internet browsing. That's just how smartphones are.
So how do you do it on a daily basis?
My battery is fully charged in the morning and lets assume I'm using the phone for what I bought it for - some music streaming, gps here and there if I need it, some web browsing, calls and texts etc.
I haven't even started using most of the features of the phone and my battery has died twice on my already while I was out at night.
How can that be normal or acceptable? I can't charge my battery every 6h...
brutzel1 said:
So how do you do it on a daily basis?
My battery is fully charged in the morning and lets assume I'm using the phone for what I bought it for - some music streaming, gps here and there if I need it, some web browsing, calls and texts etc.
I haven't even started using most of the features of the phone and my battery has died twice on my already while I was out at night.
How can that be normal or acceptable? I can't charge my battery every 6h...
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Click to collapse
Maybe you shouldn't have a smart phone? Battery technology is ****, it's a shame, but it's true. The only thing I can suggest is a spare battery, I carry one everywhere.
I generally watch an hour and a half of video a day on my phone, text, call, use the internet and I can still make a 9 hour day with 40%+ battery left, and just incase I am out and about in the evening before I have a chance to get the phone on charge I have the spare.
But with that said half hours charge from the mains will give you a good 30% topup I very seldom have to swap the batterys and I use a pretty juicy ROM.
Kalavere said:
It's just something you have to live with
Click to expand...
Click to collapse
or maybe not
Given his kind of use, 2 days should be normal. Right now I'm squeezing 3 days out of this battery, and that's only because I swap it out when it's at 10%, otherwise it could be a little longer... and a few calls here and there is not the only thing I did with it... it's still my work pda after all
Since it's pretty much stock, unless it gets better with time (the first recharging cycles are the worst) and even after a hard reset it won't get better, it probably is something wrong not software related.
Install battclock and check the standby battery drain, shouldn't be much higher than 4mA, up to 7mA could be normal, any higher than that, especially if significant, and you've got something wrong, and found the cause to the short battery life.
First off, buy a couple of cheap oem batteries from here...
Now, these eBay batteries have performed slightly better than the original battery...
Some of us smartphone users are so used to poor battery life we have power charging cradles at home work and car just to keep the charge up... And have spare batteries every in case of emergency...
I take my phone off the charger at 6am to go to work... My avg day is 6-10 calls, 20 reminders, an hour of UNO, an hour as a wifi router and I return home at 5pm with 50-60% battery life...
they are trying to make batteries smaller and thinner so they can make the phones thinner and smaller so battery life is compromised. But you do need to give it some time to settle in.
Back up batteries and cradles to charge them are cheap and an easy solution. So are extra chargers to keep at work, in the car, etc. Most people can charge their phone at least an hour during the day and that should give you all you need.
The only smartphone that I didn't carry an extra battery for was the moto q9c, because it came with an extended life battery. But on these phones, that probably isn't the best option.
So what did you guys do to improve the battery life of your HD2? Are there any specific programs (I heared about G-Profile) you are not supposed to use or did you guys just deinstall all the T-Mobile Apps?
If I can just get 1 day of actual use out of it I am OK with that. I just dont want to have die every second or third day if I use more often than normal...
Any suggestions or may tests I could do? I feel like I could stream music on Slacker for about 90 Minutes and the battery would be dead...
EDIT: Just did Battlog for about 15 Minutes, my phone uses between 15ma and 31ma when in standby. So where do I start, how do I find the culprit?
I love huge screen HTC devices and Im a power user, so my solutions for power issues are:
Callpod Fueltank Duo
http://palmtops.about.com/od/accessoriesperipherials/fr/Callpod-Fueltank-Duo-Review.htm
Mugen Extended-size High-capacity 2600mAh Battery for HTC HD2
http://www.mugenpowerbatteries.com/
There is a 15% discount right now, better hurry.
Extra chargers and thats it! Now I browse, calls, emails, music, videos, TV stream (Slingplayer) and maximize all of the other features of my HD2 t9193.
Software and the end-user are the cause behind battery drain. I've got 2.5days out of moderate use so I don't think it's the hardware at all.
Methods for testing battery consumption and proof it is typically software related
Hi,
At the risk of looking like I'm trying to hijack this thread, I started a discussion on this particular subject a while ago as feedback on my finding after reading almost all the threads I could find regarding battery use on the HD2. Lude219 is 100% correct, the issue is always software related (yea, I know there might be exceptions to the rule) and my phone was a prime example of that.
See the thread below that explains how to measure your battery consumption, has logs and screen shots from users you have high consumption and also people who have systems where battery life is more than 48 hours so that you can compare your results.
http://forum.xda-developers.com/showthread.php?t=718173
Regards
I'm also sure it's software related. My phone would use app. 2% overnight with all connections closed. This i tested over months. Then suddenly without me changing anything drastic software wise, it pulled 5% per 3-4 hours. So after going thru all the cleaning routines nothing helped exept a good "ram cleaning" . Somehow or other the phone starts processes over time wich consume alot of power. One would have to look into it with a process manager to find out what exactly it is. WinMo seems to be quite sofisticated looking at all the running processes. So my view is , keeping the system tidy might be the only way to save the extra power.This is where the huge diffrence to other platforms seems to be, it can take quite a while until you have configured your phone the way you need it. I am useing the stock rom 1.66 German
thanks you guys for participating and sharing your thoughts.
But now, here is a thinker:
Last night, I let my battery drain all the way to zero and then recharged it at night. The only other thing I did was installing BSBTweaks and Touch X Taskmanager. I also changed my Bandswitch Settings to turn off data when not used and put it at 60 sec (instead of 500 sec before).
And I couldnt believe what I was seeing, I took my phone off the charger this morning around 8.30am and now at 7pm I am still at 84%!!! I did not use the phone heavily but sent and received a few texts, made 1 call and played around with it for a little bit. Similiarly to what I did in the beginning after I got the phone, but then the battery had almost died at 7pm!
I am super happy and hope it stays like that but cannot explain why all the sudden it is that different...
Hi everyone,
This is a very usefull thread, for me it is, thanks to everybody that answered.
regrding the last post, a noobish quesition is
”Bandswitch Settings to turn off data when not used and put it at 60 sec (instead of 500 sec before): how do i do this?”
I remember stumbling upon this setting the day i got the phone and started viciously going through it.
Somehow it didnt store in my memory the path i went that day so i can try doing what the man sugested.
So if anyone can lay a hand, much obliged.
Regards
i lost 12 pct over night in 9 hours with my radio turned off last night and only gmail and texts were open...
with battlog how do i do the test so it stays in standby? it keeps turning the screen on and off when i run benchmark
You may want to flash a new radio. Try a new one each day and measure battery life. I use radio 2.12.50 and have had a good experience.
yeah but with my radio turned off the radio shouldnt affect it shoudl it?
i use blackberry to stream pandora radio thru aux for about 8 hours a day and it still has 2 bars left after that.
HD2 just sits there and kills the battery lol
what kind of phone is that when you have to disable all its functions every time you dont use it?
seriously this is called unfinished product or poor design, that is beeing sold to customers as a next best thing.
you guys can argue with me all you want. i heard many excuses from users advocating the companies. such as. if you dont like this than pay more for a better product. well HD2 is a better product, its a 500 dollar phone damn it.
but you dont realize that even the "better" products suffer from same underdevelopment syndrome.
companies spend millions on consumer research and consumers spend millions on **** they dont need every year. cows eat grass, consumers eat garbage made by big companies.
where are the better products? they dont exist because it became "normal" to have a faulty OS or for your phone buttons to fall off, or battery to explode.
companies worked long and hard to make consumers get used to the idea that garbage is just a part of life, and worked long and hard to minimize costs of production, and cut corners.
which corners?
the final QA testing that is not beeing done by a company, so they can release the phone 3 months earlier, the consumers pay for the phone and test it.
we work for the company and we pay for it instead of getting paid.
the phone breaks oh how sad ,
company takes note(dont use this cheap glue or the buttons fall off, get a lil more expensive glue next year)
so they use better glue and cut another corner and we buy another "new and improved phone" and this time screen goes dim oh dang not again...and it continues.
do you disconnect your car battery every night so it doesnt die? or when you buy a lexus do you drive with your AC off because it cant pull the car around when ac is on same time as the stereo?
I use my Gtablet all day and I always shut it off and turn it back on ( boot it up) and ofcourse that takes 2 minutes or so.
Will it do any harm (or kill battery etc) if I leave the Gtablet on all the time like a pc ( maybe re-booting once a week or so) and just hit the power button to shut the screen off. Just dont want to kill my device by leaving it on all day and night. Just curious if anyone does this and if theres any harm to the device.
Thanks.
It will drain battery faster, so you will have to charge it more. That will probably reduce the life of the battery as well, since it will have more cycles.
I do the same as you, turn it on when I first use it and shut it down at night. No reason to drain a battery overnight, IMO.
Forgot to add that I leave it plugged in and charging all the time until I use . But yeah I guess turning it on at night and shutting off before bed is not a bad idea.
Thank you.
I've been confused by this situation, becuase when I first got mine, I made the opposite comment and was made too look like an idiot.
There was a post a while ago regarding how to get better battey life. People were complaining that their G-Tablet would lose too much battery life when left in sleep at night (not plugged in) I made the comment "Why not just turn it off?" and people responded with "Because it's a tablet."
Having NO IDEA what they meant, I asked what they were taloking about. Basically they explained to me that a tablet should be treated as a cellphone, not a computer. "You don't turn your phone off at night, do you?" was one question asked of me.
I'm still lost, becuase frankly, I think that they were just being stupid. The tablet IS more like a computer than a phone, as far as battery drain goes. I'd be in a world of trouble if my battery only had a 10 hour drain while in standby.
SO, I turn it off, and leave it plugged in at night. I use it all day, then plug it in (while on) in the evening so that I can access it if needed. Then, before bed, I turn it off, and just let it charge all night. occasionally, I will leave it plugged in an on at night. I figured that's what I do with my cell phone too, right?
Leave it on, all the time.
My wife and I both leave ours on, all the time (well she has too because it will not boot once turned off unless I nvflash it). There is no reason to turn it off unless you have to have longer than a day for battery life and are opposed to charging it every day.
I take it off the charger at 7:00am when I leave for work and then put it back on the charger later that night. Depending on how much I used it (were lots of apps updated, did I run another titanium backup, etc...) determines if I need to plug in earlier or not.
My wife leaves hers on the dock and takes it off to use, then places it back when done.
To help with battery life though you can set the screen timeout to a low time...so once you stop using it....the screen will timeout quickly and put the tablet to sleep.
Here is my very uninformed opinion on this debate.
The PC is designed for you to turn it off when you're not using it. The phone/tablet is designed to be on all the time and just be put to sleep when you're not using it.
The first sign of this is the OS itself. In windows and mac platform, once a program is running it will continue to run and run and run like that annoying rabbit until you stop it. And if you leave those programs running in the background they will do nothing but eat up your memory. What you then have to do every once in a while is to reboot.
In fact, back in the first gulf war there was an incident where a computer controlling the anti-missile defense system of a base was left on too long. They kept leaving it on because they were worried about incoming missiles. When the real missiles came flying, the system had already used up all its memory and made inaccurate calculations to counter. I think a few people died as a result. The incident could have been prevented if they had rebooted the computer. I remember reading about it back then.
Anyway, android is designed for your phone, which is meant to be on literally all the time. Especially with froyo and up, there are built-in systems to shut down running apps that aren't being used. Memory cycles also act differently so you don't run out of memory the way you do with PC.
Another thing is there is such a thing as turning it on and off too much. A significant determination of the lifetime of your electronic devices is how many times you turn it on and off. Not only that, The lifetime of your battery (how many cycles of charges you can have) also depends on the age more so than the actual number of times you recharge it.
You can very easily experiment with this by buying a brand new camera battery and just let it sit there. After a couple years, even though you've barely used it, you could only get less than an hour (sometimes even much less) even though when you bought it it's suppose to last your camera a whole 3 hours with a full charge.
That said, I'm running calkulin+clemsyn combo with cpu master setting the speed to 1.0 ghz most of the time. It's only when I want to impress people do I put it up to 1.5 ghz. I've tried both methods. For a couple weeks, I would turn it off every night and on every morning. Then for the next couple weeks I've been keeping it on all the time and only putting it to sleep while docked at night.
And I know this is only anecdotal evidence and is perhaps meaningless in science (I'm a researcher) but the gtab appears to be working a lot smoother and better when left on all the time.
Just my 2 cents.
It's a tablet, by design it suppose be turned on and be ready to use in no time at all when you fancy to dig up internet or watch movie, netflix etc.
The one way to achieve such readiness is to never shut it down. But from other hand, why waste energy when not in use.
So, here we go with "sleep" mode which is by the way implemented in Android 2.2 and 2.3 very poorly (in comparison with iOS). gTablet with Froyo, GB would typically loose 0.9-1.5% of charge per hour "sleeping" and then again there might be runaway apps which stuck in endless loop and will kill your battery in no time.
I've tried lot's of things and nothing can bring down discharge rate in "sleep" mode less then numbers above. So, I just keep my gtablet charging overnight.
Sometimes I just shut it down. Especially, when I found the way to speed-up cold start from 2 min. previously down to 40 sec.
Thanks all very informative and appreciate all the opinions.
I turn my gtab off at night but charge it only when necessary. I never use it while plugged in. I don't see the parallel between gtab & cell phone since I've not missed a call on gtab
My tablet is never turned off, unless the battery dies.
Part of the whole point of the tablet paradigm is the instant-on/instant-off concept. Remember, putting it to sleep uses very minimal amounts of power. Most functions go into standby, its a lot more than just "screen off". If I don't use the tablet much during the day, it can easily last until the next before having to charge again. Putting it into airplane mode and leaving it on all night will probably not consume that much more power than booting it up again in the morning (remember, when the CPU is being used it consumes more energy. Booting up is intense, sleeping is not).
Heck, I heard HP was considering leaving out the ability to power off their WebOS tablet (coming from the world of Palm, where many devices did not have the ability to shut down completely).
Stop comparing it to a computer- they aren't exactly phones, think of them as something more like a giant PDA. The same way you didn't have to shut down your old Palm Pilot throughout the day- imagine waiting for it to boot up each time you wanted to quickly check your calendar! The idea was to quickly turn on, do something and turn off. That's what a tablet is supposed to be.
Seems most here are bringing personal preference/philosophy into this. The question is what was best for the tablet. So, I looked it up...
The biggest factor is the battery, of course. gTabs have Li-ion polymer batteries. Here's a decent synopsis:
Li-ion and Li-ion polymer: Used on a lot of newer devices, has no "memory" effect, should be recharged as often as possible, actually likes to be charged and draining it regularly can cause the usage time to be shortened, can NEVER be overcharged so whenever you're near a charger put it on there. Besides those benefits a li-ion battery is lighter and smaller but the chemical can hold more charge than Ni-cad and Ni-mh.
So the one reply to your question said to error on the side of draining the li-ion batteries. This is incorrect information. You want to charge the battery before it gets below a 20% charge. Also batteries will not go bad from accidentally doing the incorrect charging procedure here and there but normally follow the correct procedure.
Click to expand...
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http://forums.cnet.com/7723-7590_102-115543.html
Yes, I remember 5-6 years ago, there was a whole movement about li-on and polymer batteries (which are VERY different, btw) being charged as often as possible.
My theory is that this was started by battery manufacturers, as every person I know who followed this philosophy needed to replace their batteries during the useful life of the product (be it cell phone, laptop, etc).
The general theory (and the one I have had success with), is to NOT plug it in unless you are ready to charge it 100%. How often you charge doesn't matter, however do not disconnect a battery if it is in the middle of being charged.
But aside from all this, I thought the question was how is the G-Tablet supposed to be used.
The answer is, like a tablet. Not like a computer. If the G-tablet can't be used the way a tablet is supposed to be used, its not a very good tablet then, is it?
TarheelGrad1998 said:
Seems most here are bringing personal preference/philosophy into this. The question is what was best for the tablet. So, I looked it up...
The biggest factor is the battery, of course. gTabs have Li-ion polymer batteries. Here's a decent synopsis:
http://forums.cnet.com/7723-7590_102-115543.html
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I thought the biggest question was the effect of powering off on the tablet's battery and internal memory/performance.
Charging aside, what effect does turning it off regularly have on the device?
TJEvans said:
I thought the biggest question was the effect of powering off on the tablet's battery and internal memory/performance.
Charging aside, what effect does turning it off regularly have on the device?
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Click to collapse
Powering off? Should really have no effect on battery life in the long run. The cons are that you have to wait for it to boot back up again which takes substantial power and time.
Dishe said:
Powering off? Should really have no effect on battery life in the long run. The cons are that you have to wait for it to boot back up again which takes substantial power and time.
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When I don't have enough time to wait for my Gtab to boot up, I'll get into a new line of work - oh that's right I'm retired
buchaneer.nl said:
When I don't have enough time to wait for my Gtab to boot up, I'll get into a new line of work - oh that's right I'm retired
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And you're modding an android device? Wow...
Sorry, I'm just too used to people from your generation not being able to find the 'any' key. No offense intended. My elderly dad belongs to your generation. And so is my g/f's mom.
goodintentions said:
And you're modding an android device? Wow...
Sorry, I'm just too used to people from your generation not being able to find the 'any' key. No offense intended. My elderly dad belongs to your generation. And so is my g/f's mom.
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...!!
Good grief, even I'm offended!
On behalf of the rest of the forum, I would like to apologize for goodintentions.
Meanwhile, buchaneer.nl, part of the philosophy of the tablet concept is that it is supposed to be always on. Otherwise, if you intend to use it like a computer a netbook is an infinitely more functional tool for the same money. No hacking about to enable Skype, Netflix, Hulu, you get full office and a keyboard, etc. They are just different paradigms and designed for different uses.
A tablet is supposed to be casual use. Turn it on, turn off. Hold it. charge it when it beeps. Repeat.
Dishe said:
...!!
Good grief, even I'm offended!
On behalf of the rest of the forum, I would like to apologize for goodintentions.
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Why is that offensive? I'm sure when I get past the BIG 30 I will find it hard to operate the new neural interface devices and the star trek transporter-like technology.
When I was in college, one of my engineering professors was 90 years old and could write programs in like 50 languages. So, I'm well aware that not everyone from that generation is tech illiterate. That said, a very large number are. It's a fact.
TJEvans said:
I thought the biggest question was the effect of powering off on the tablet's battery and internal memory/performance.
Charging aside, what effect does turning it off regularly have on the device?
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Click to collapse
The question was, is it better to turn it off, or does it do harm to leave it on all the time. The answer is it doesn't matter, so long as you perform proper charging of the battery.
As has been said, this is not like a computer, which has hard disks drives which wear out from spinning (and thus, reboots take a toll on the device). So rebooting does no harm, other than impatience for waiting.
And I guess as part of the over 30 crowd, I remember when booting a computer took FOREVER. So to me, booting the gTablet is nothing. I leave it on if I know I'll be using it in the near future, but otherwise, I turn it off.
how long dos your battery last WITH THE SCREEN ON with and without 4g poll
I can't tell you the time without, but I can say 4+ hours with. Wifi/GPS etc. turned off however.
I can get away with charging it every second day with light use.
Now THAT IS an interesting question. Gonna try this next day off rofl.
xD
well reading over all these battery threads they brag nonstop about godlike battery life i highly doubt them and because of their incessant bragging over 2 days of battery doing blah blah people assume something is wrong with their battery. i highly invite them to take this poll and see their actual screen on time they guess that they played for 15 - 30 mins when it was only ten or so , this poll ought to straighten things out so we actually know wether these battery issues are normal for everyone.
This pool is a bit too restricting. There are other things that impact battery life... like screen brightness and haptic feedback to name two.
I can say My phone lasts, every day, from 9am to 2am with moderate use, about 4 hours screen on.
I cant turn off 4g, but on my phone I get 24hrs use with 5hrs screen time with Wifi on 7-8hrs. I use autobrightness, have next to no widgets, and a static wallpaper.
The reviews I have seen make it seem like the battery life should be much better though.
Sent from my Atrix
As the lady said in Full Metal Jacket, "Me love you long time."
In all honesty I'm a little disappointed with the battery life on my Atrix. I pretty much bought this phone as a replacement over my iPhone 3GS, because the battery would barley last 2 days with little to no use, but I can't say the Atrix provides much improvement either. With minimal use I'd get around 2 days of battery with my Atrix. Today I charged my phone at 7:30PM and with little use (maybe 20min in total) the battery is at 80% after 10 hours. Either this is normal or mine is faulty, cause the area around near the main front buttons and where the Moto blur logo is on the back constantly gets warm during normal use. I've had the phone for a little over a week now, so if I'm the only one having these issues then maybe I should go to a Bell store and exchange it for a new one.
There's been mixed reviews of battery life in the CM7 rom for the NT as far as battery life is concerned, some are saying they've run it with moderate use since the day it was released and only used about 20 - 30% so far while others are saying battery life is terrible.
SO I thought I'd start a little poll to see what people are getting, I'm guess the battery drain is due to various software being installed so not really the OS's fault.
For me the Battery life is greatly improved over stock, for instance I took it of charge 10 hours ago, it's admittedly only been used for a few minute son and of during those 10 hours but it's lost the grand total of 4% battery in those 10 hours which I consider pretty good really.
Soi lets here what everyone thinks, remember to vote !
Battery life - improved
This is my third day on the CM7 alpha - battery life has been much better than before. Considering I have probably spent more time with the NT turned on over the last couple of days than I normally would, the battery used is less than normal. Previously I would use about 60% of my battery per day. Now I am using 30%-40% - and that includes downloading and configuring many, many applications.
I really think its much better than stock in my cm7 nt
No problems here. Take off charge around 6am and return to charge around 10pm with usually more than 80% left depending on usage.
Sent from my Droid Incredible ICS 4.0.3
I don't think mine has been on a charger for the last 16 hours or so, light usage, wireless has been off most of the time, and I use a task killer to kill things before I turn off the screen. Didn't power off, just put to sleep last night before bed, it's still at like 85%.
So far, it seems better than stock battery life to me, or at least no worse, and I have a lot more apps installed now.
Edit: Internal version.
It might help if folks said if they were running off SD card or internal memory when looking at battery life - I have the impression that the SD card reader on the NT is something of a battery vampire.
Internal CM7 since it was released.
Live wallpaper on Golauncher
wifi set to screen off-off
Brightness at about 60-65%
It's been off of charge for 4 hours 21 minutes this morning and I'm at 96%
Dolphin HD and Gmail have been running all that time.
Hasn't been out for long enough to really tell but my impression is that it's about the same as stock.
screen.
10char
dang69 said:
screen.
10char
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Odd. Is that your aforementioned case with lots of standby? On my Vibrant, the Screen bar generally dwarfs all other bars even with significant standby time. Granted that's an apples-to-oranges comparison... (I don't have CM7 on my Nook Tablet yet - can't do a comparison between stock B&N and my Vibrant at the moment.)
PlacidCat said:
Odd. Is that your aforementioned case with lots of standby? On my Vibrant, the Screen bar generally dwarfs all other bars even with significant standby time. Granted that's an apples-to-oranges comparison... (I don't have CM7 on my Nook Tablet yet - can't do a comparison between stock B&N and my Vibrant at the moment.)
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Yes. I don't really know what "standby" means. This use was about 40 minutes of checking email, weather news and etc followed by About 2 hours with the screen off then an hour of dinking around. Watched all the superbowl commercials, staying up on XDA and other forums with Tapatalk and learning things in CM7. I'd describe this as light use bordering on moderate.
dang69 said:
Yes. I don't really know what "standby" means. This use was about 40 minutes of checking email, weather news and etc followed by About 2 hours with the screen off then an hour of dinking around. Watched all the superbowl commercials, staying up on XDA and other forums with Tapatalk and learning things in CM7. I'd describe this as light use bordering on moderate.
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Watching video or playing games can be quite intensive. Flash is probably the most intensive for video playing.
Keep a good eye in it over the next few days then cone back and post if you've noticed anything that makes it better or worse with battery life
Last I checked mine was going on 18 hours and at about 40%
One thing I noticed is that the charger for my Moto phone doesn't seem to charge the nook as well as the nook charger. I'll have to look at the nook wall wart and see if it's pumping out more juice. For reference the Moto charger is only 4.33W (5.1V at 850mA).
The nook charger is a 1.8amp charger
CelticWebSolutions said:
Watching video or playing games can be quite intensive. Flash is probably the most intensive for video playing.
Keep a good eye in it over the next few days then cone back and post if you've noticed anything that makes it better or worse with battery life
Click to expand...
Click to collapse
Will do.
10char
RadicalAns said:
Last I checked mine was going on 18 hours and at about 40%
One thing I noticed is that the charger for my Moto phone doesn't seem to charge the nook as well as the nook charger. I'll have to look at the nook wall wart and see if it's pumping out more juice. For reference the Moto charger is only 4.33W (5.1V at 850mA).
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What kind of usage? Low, high, moderate? Just curious because my wife and I do a decent amount of Netflix (1-2 hours a day) and I don't have to charge more than every 3 days. This is with 1.4.0 rooted. I've been exceptionally pleased with that - power consumption in standby seems to be incredibly miserly with stock (most likely due to WiFi being turned off when the system is in standby).
Montisaquadeis said:
The nook charger is a 1.8amp charger
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Ahh. That explains a lot. Looks like I should pack that in my bag rather than my Moto charger. I wonder if it'll charge my phone faster?
On the subject of the battery, I posted about an issue I encountered last night, here:
http://forum.xda-developers.com/showthread.php?p=22261812
Additional information: At the time, I was fooling around with a playstation emulator, which i'm fairly sure constitutes a heavy drain on system resources. Battery drain seemed appropriate for the level of activity.
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Internal install, wifi off during sleep. Figure the end of the graph was about 19-20 hours or so of sleep. Before that was a constant internet, twitter, WWF session. Screen brightness is in the bottom 1/3rd of the slider.
I am going to beat the hell out of it tonight and will see how the battery holds up. Looks pretty solid just sleeping, so we will see what it can do under load.
So found that if your wireless location is turned on, it will wake your NT about every 5 minuetes. That's not a good thing
If anyone is seeing drains, i suggest using betterbatterystats to help track down the culprit.
10 char this
So Im getting horrible battery life with this now. Not really sure whats going on. I use to be able to leave my nook on standby for days and last night it was at about 30% woke up this morning and it was completely dead...
First of all, let me say thanks to Scott for all of his work on CleanRom. I know there has been a lot of discussion lately in his thread about battery usage. Some people are getting outstanding battery life and some people can't make it more than a few hours. I have been one of the people that can't make it more than a few hours no matter what I do. I did a clean wipe of everything before installing the ROM and have even tried to reinstall. The odd thing is my wife's phone does fantastic with this ROM. I finally decided to test things side by side lastnight. My phone should have had the clear advantage because I turned off all syncing options and froze any apps that had been downloaded just to make sure there was nothing running. Meanwhile, her phone syncs like crazy to facebook, email, etc and also has various apps running like weatherbug. I let them both sit overnight and after ~9hrs here are the stats I measured:
Battery % left : 79% (mine) vs 88% (hers)
Data used overnight: 75kb (mine) vs 744kb (hers)
Time awake: 3min 32sec (mine) vs 9 min 42sec (hers)
Time in Deep Sleep: 9hr 19mins (mine) vs 9hr 6min (hers)
Everything points to the fact that I should easily have more life left than hers. I am also attaching a couple of screenshots and the betterbatterystats files to this post. Maybe we can track down why everyone's battery life is so different. Tonight I plan to swap batterys between the phones to try to determine if my battery is the problem.
wow that's pretty good on your wife's phone but horrible for yours especially considering you turned off syncing.
I agree. I have no doubt that her phone could easily still be at 95% or more if I made all of the same adjustments to hers as I did to mine. That is why I am hoping someone on here with more knowledge about this stuff can help to determine what is going on.
It honestly might just be a faulty battery, I was having similar results with mine and my friend's phone, too. I tried multiple ROMs, Kernels, etc. But it slowly got worse and worse to the point that I would go down from 100% to 60% in little over an hour, doing nothing but listening to music with the screen off and auto-sync etc off. I bought a replacement battery, though. And this one is working just fine. You might just be having bad battery luck, or it might be your device, I know some people have returned their Rezounds because of battery life/heat problems, and the replacement generally fixes their woes.
so what did your betterybattery stats report?
Thanks for running this test. It would be very helpful to everyone if you could pinpoint this to a battery difference and I'm waiting to hear your results after the battery swap.
What helped my battery life most was to uncheck the box under "settings -> applications -> start automatically" It has something to do with a task manager. It probably wouldn't explain why your wife's phone does better but it could help both of you get better battery life.
bik- The betterbatterystats file is attached. I see a lot of activity on her phone but very little for mine. The only thing that stands out to me is I have alarmmanager waking my phone for 10 mins and she had it waking hers for only 5 mins. I am not sure exactly what alarmmanager is though.
HTGaming- Thank you for the suggestion but I have already done that as well. I think I have literally turned off everything possible on this phone because it is driving me nuts to burn through battery like this. My OG droid used to us 30% in a day max and now I burn through that in an hour if I am using the phone for anything at all. Pretty much the only thing I had running on the phone lastnight was 4g service which her phone also had.
Another thing you can do to compare the two phones is to install battery monitor widget to see what the drain is on the phones. I used to have decent battery life but ever since the update, it's been worse. The one thing I noticed is that now my phone draws more current when sleeping than it used to. The drain is consistently close to 300ma, whereas before it would be less than 200ma when sleeping.
You have to have the widget on for the monitoring to be active unless you change the preferences.
I swapped the battery's lastnight and here's the results. Hers is still clearly better than mine even though betterbatterystats shows way more activity on her phone again.
Battery % left : 84% (mine) vs 90% (hers)
Data used overnight: 279kb (mine) vs 498kb (hers)
Time awake: 5min 32sec (mine) vs 12 min 8sec (hers)
Time in Deep Sleep: 7hr 58mins (mine) vs 7hr 59min (hers)
Someone posted that they saw different PRIs on phones even after the OTA. Do your two phones have the same PRIs?
damnn thats just weird
Im starting to think that some Rezound batches are differently tweaked than others. My first Rezound had great battery, I would stream music for 5-6 hours on 4G and would still be above 60%. My last two however were completely horrible, on 4-5 hours standby it losses closed to 20% with lil to no use. Same settings/apps as my first Rez. I regret returning my first Rezound, it truly was the perfect phone.
There really has to be a reason why some come with a 3.8 V bat. opposed to a 3.7 V. HTC wouldn't just send out two different types of battery for no reason.
You are missing 1 key info in your analysis, which people always seem to leave out when talking about battery life. The screen on time. I see in in the graphs but it's hard to tell the exact number. Because of the 720p screen on our phones, that makes a big difference. When my screen is on, the phone uses up at least 600 ma/hr. That is conservative, usually it is more like 700-800. We'll assume 600 for now. That's 10 ma/minute. Based on the stock battery, that is 0.6% per minute. So having a difference in screen on time of 10 minutes will give you 6% difference in battery life.
i am also unable to go for even most of a day on one battery charge - and i have 3 extra batteries that were from ebay that dont work even that long...
i do notice it when the screen is on the most - yest i used the gps for an hour and a hlaf without plugging the phone in and my battery lasted about 3 hours after that and died....
very bad....
very interested to see if its the phone or not - great work...
I'll try to answer a couple of questions in here. I got very frustrated yesterday so I flashed an ICS rom to see how my phone did with it. It is equally as bad. This morning, I got into work with 97% life, checked my email for about 2 mins and was already down to 90%. I have the screen display set to 30% brightness too. I am amazed that people can used 2-3 hours of display and still have 70% battery after 10 hours. My screen at 30% brightness probably drains 2% per minute. I think tonight I am going to try to install one of the stock RUU's just to check and see if the OTA upgrade possibly didn't install itself correctly.
HTGaming - I will check the PRI's tonight.
Bluesnake - Both phones were purchased the same day so I would guess they are from similar if not the same batch. Both have 3.7 batteries. Infact when I first got my phone, I could have display on auto, sync everything every half hour, use the screen for random browsing throughout the day and still go home with over 70% left. Somewhere along the line my phone has developed some sort of draining problem though and no amounts of clean installs seem to fix it.
b5fan - Both phones were off the entire night. I think screen usage was maybe 10 seconds for both of them. They literally just sat there on the nightstand while we slept and mine drained 2x faster with nothing running while hers ran facebook, email etc.
I checked the PRI on both phones and they are the same. I re-ran the stock RUU tonight so I will see if that makes any difference. I highly doubt it will but I am running out of ideas.
I guess I was thrown by the screen shots. They both show some noticeable screen time.
the only other thing I could think to check is the email type, push versus pull, and the frequency.
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b5fan said:
I guess I was thrown by the screen shots. They both show some noticeable screen time.
the only other thing I could think to check is the email type, push versus pull, and the frequency.
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The screen time was probably just from me getting all of the data off in the morning like the screenshots and battery stats. Her email was on push and my email was set to not sync at all. Basically she had a fully functional phone and mine was set to do nothing which is why the battery drain is so hard to explain.
I did run the stock RUU image lastnight for my phone. I put it in airplane mode overnight and it was at 97% when I got up which is a huge improvement. I took it off airplane mode at 6am today and when I got to work at 7am, it was down to 90% so I guess I am in wait and see mode now. I have no email accounts/facebook accounts/ or anything else setup right now. It is only the stock image so there should be nothing draining battery today.
I can confirm the phone is no better now after the clean RUU install. Let it sit overnight and it was down to 80% this morning. I did not even setup any email accounts or download any apps yet. This is just the stock image from verizon.