[Q] New tf 700 poor battery performance - Asus Transformer TF700

Best buy swapped my Prime for the infinity and so far it is pretty good except the battery life is terrible. I read it should improve after a couple cycles but I don't see it improving dramatically. On my Prime I could charge it once every 5-6 days with moderate use in the evenings. On the Infinity I am only getting 2.5 hours of screen time and down to 30%. Not even close to what it is supposed to get and I mainly use just web browser and WiFi everything off including sync and dim the screen.
At first the battery was so low it would not even turn on until it charge overnight. I read this is normal but I wonder if it sat for too long and the battery was damaged. It came loaded with 9.4.5.30 and I have not updated yet from that version. Should I exchange this for another one? Thanks.
Sent from my SGH-T989 using xda app-developers app

Is location services on?
Send from my Samsung Galaxy S3 using Tapatalk 2

Nope, just WiFi.
Sent from my SGH-T989 using xda app-developers app

bigcletus said:
Nope, just WiFi.
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2.5 hours!
Yes that's poor battery time.
Is your tablet's serial number in the C70's or C80's?
Kind of strange it was .30 instead of .26 as a brand new tab.
Check the performance level setting.
Otherwise I'm not sure.

bad battery stats
Sure its poss to get one with a bad battery or charger...but...
install the std jellybean power control widget ...its in widgets... and see if all your radios and svcs are on... if you have 3 radios on and sync and brighteness up ..your batt time will be toast....
if that doesnt fix it... do a FACTORY RESET.... that fixes this issue many times....
if that doesnt fix it.... RMA THAT SUKER...

Im in the same boat...my TF700 can barely last the day w/ intermittent use let alone steady use via gaming or videos. My TF101 can go a few days w/ out a recharge and it used to get a lot of use. I am wondering about a hard reset...did that work for the OP?

deprofundis said:
Im in the same boat...my TF700 can barely last the day w/ intermittent use let alone steady use via gaming or videos. My TF101 can go a few days w/ out a recharge and it used to get a lot of use. I am wondering about a hard reset...did that work for the OP?
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Click to collapse
I had it swapped for another unit which has a similar serial number (CAOKAS...) and I am getting the same results. The best battery life I can get is just a little over 4 hours screen time and 3 days since last charge. Here is what else I have done:
-No GPS or any google loc services checked
-No Sync
-brightness at less than 25%
-disabled most stock ASUS apps
-rooted and used battery calibration after full charge from 0% batt
-Using Balanced mode, never performance mode
I mostly use for web browsing, maybe 80% of the time. The other time simple games like solitaire and majong. Thinking about getting it swapped again. Maybe the store got a bad batch or something. I am also coming from a tf101, tf201 and used to get great battery life on both of those tabs. This one however is worse than my lenovo laptop and my sgs2. Any thoughts?

bigcletus said:
I had it swapped for another unit which has a similar serial number (CAOKAS...) and I am getting the same results. The best battery life I can get is just a little over 4 hours screen time and 3 days since last charge. Here is what else I have done:
-No GPS or any google loc services checked
-No Sync
-brightness at less than 25%
-disabled most stock ASUS apps
-rooted and used battery calibration after full charge from 0% batt
-Using Balanced mode, never performance mode
I mostly use for web browsing, maybe 80% of the time. The other time simple games like solitaire and majong. Thinking about getting it swapped again. Maybe the store got a bad batch or something. I am also coming from a tf101, tf201 and used to get great battery life on both of those tabs. This one however is worse than my lenovo laptop and my sgs2. Any thoughts?
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Click to collapse
To be honest that sounds about right - I get approx 5 hours screen time on mine without the dock. I had a prime before and the Infinity uses a lot more juice.
If it is sleeping I can probably get 3 to 4 days out of it - never really tested but it only loses ... say 5% max overnight.

With WiFi turned off I get about 9-10 hours, with it on, 4 at most provided I don't use music or videoplayers. The WiFi antenna drains juice like a vampire. (the non-sparkly kind.) It's much more powerful than on any of the previous tabs.
Sleeping.. well, it's been sleeping for about 2 weeks now, let me check.... 82%. WiFi off at all times. If I leave WiFi on whilst sleeping it's dead in 4 days.

Related

Tips to GREAT Battery Life!

Here are the settings I'm running on CM7 to get amazingly bananas battery life (with the display being on for about 5 hours!)..
1. Conservative governor: 245mhz - 1017mhz in CM7 settings
2. Install the 'BatteryCalibration' app from the market. This app caused the single biggest improvement for me after having flashed so many roms and never calibrating the battery. If you've calibrated it before though, I don't think it'll be very useful for you.
3. Install 'NoBars' from the market to automatically turn on airplane mode when you have no service. (This might be useless to some of you if you always have a signal; Very useful in NYC subway though)
4. Use a 2G toggle widget to have the phone only use the Edge connection when you only need it to receive calls/ texts and don't need the high speeds. I use the toggle widget in the CM7 notification bar. HUGE battery saver.
Give these a shot and let us know how they work for you
I've reached the end of my day and here are my final stats..
Mmy display has been on on over 5 hours now and I have 5% of the battery left. Seems more than good enough for me. Hopefully it will be for some of you too
Edit - Updated with more recent stats
Aspeds2989 said:
As you can see by my display being on over 3 hours, I used my phone a heck of a lot today and still have over a third of my battery left. Seems more than good enough for me. Hopefully it will be for some of you too
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Question: It's cool that your display was on for 3 hours, but what did you do as far as app usage??
If you did use your phone "a heck of a lot" wouldn't some apps like "internet" "maps" or something show up on the battery use %'s???
For example, currently, other than phone idle, cell standby, voice calls and android, there's also internet, mail, maps, and other apps that I used today alot.
Good observation. I have no idea how android chooses which apps to show on there, but I think it depends on the ROM? I remember on Iced Glacier cell standby would barely use 5% of the battery and on CM7 it uses >40% consistently. Idk.
Maybe what those apps used up here was nothing compared to the display, wifi and phone idle time.. Just a guess.. But I did use the browser and xda app and listened to music via the Rdio app running in the background several times throughout the day, and sent multiple texts and have had my wifi on for about 5 hours now. I can't really find a menu that would show these statistics except in the Spare Parts app, and here you go..
I got 17 hours just yesterday with 9% left with moderate to heavy use (texting, web browsing and ps1 emulation).
I didn't do anything besides use faux's kernel with the smartass govenor. I have the max speed overclocked to 1.8 as well...
Nice. I just got over flashing new kernels for a while since the stock CM7 one has everything functioning perfectly and new kernels would improve on something but mess up something else in my experience.
I can't seem to find a 2g toggle widget that works with Royal Glacier. (one touch, I've found a few that take you to settings) When I was running Royal Ginger I would always use the one that came in the notification bar.
Wifi status is also a good app to remind the forgetful to turn off wifi when they leave the Area.
Aspeds2989 said:
I've reached the end of my day and here are my final stats..
Mmy display has been on on over 5 hours now and I have 5% of the battery left. Seems more than good enough for me. Hopefully it will be for some of you too
Edit - Updated with more recent stats
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Click to collapse
This is GREAT battery life... i wonder what word i'd use to describe mine.
i Pulled my Phone off the Charger this morning @ 7:20pm EST. Now it is 3:13 EST. and i've got ~50% left. So thats what like. 7 hours
neidlinger tap that 'screen on' tab and lets see how long your screen was actually on for?
Either way congrats, and it's good to see ppl are over the battery issues.
Aspeds2989 said:
neidlinger tap that 'screen on' tab and lets see how long your screen was actually on for?
Either way congrats, and it's good to see ppl are over the battery issues.
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Click to collapse
since my last boot. 8:10AM when i loaded the new CM7. 1h 1m 59s.
Unless I'm missing something, the 'BatteryCalibration' app won't increase your battery life. It will just help to get a more accurate reading of your battery level.
I've played around with different roms and kernels. And yes, they do have a small effect on battery life, but not all that much.
Here's my tip for battery life. Get on ebay and buy one the of the cheap packages from Hong Kong with 3 batteries and a standalone charger. Like this:
http://cgi.ebay.com/3x-New-1500mAh-Battery-Charger-HTC-Mytouch-4G-Merge-/290556738794?pt=PDA_Accessories&hash=item43a687fcea
I bought a similar package a few months ago and now I never have battery problems. Nor do I have to take a chance on wearing out my micro-usb jack like I've seen happen on a lot of other phones.
Maybe. All I know is my battery increased dramatically after running that app once.
I measure battery life by how many hours I am able to keep my display on before it dies rather than how long after it comes off the charger (like nedilinger does). My battery used to die after about 3 hours of the display being on. Now it consistently lasts 5 hours.
Anyway, I was just trying to let others know what I did to get a really good battery life on my phone thinking it might be helpful. Apparently that's not appreciated. Thanks tho.
sundayhustler said:
Unless I'm missing something, the 'BatteryCalibration' app won't increase your battery life. It will just help to get a more accurate reading of your battery level.
I've played around with different roms and kernels. And yes, they do have a small effect on battery life, but not all that much.
Here's my tip for battery life. Get on ebay and buy one the of the cheap packages from Hong Kong with 3 batteries and a standalone charger. Like this:
http://cgi.ebay.com/3x-New-1500mAh-...738794?pt=PDA_Accessories&hash=item43a687fcea
I bought a similar package a few months ago and now I never have battery problems. Nor do I have to take a chance on wearing out my micro-usb jack like I've seen happen on a lot of other phones.
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Click to collapse
How long does 1 of those batteries last?
Sent from my HTC Glacier using XDA App
simple way to get awesome battery life without any extra steps is to install RoyalGlacier 1.6, that's all. A couple days ago I ran my phone for one and a half days before charging it again, and it still had 14% battery left. RG is pretty much a polished version of CM7, runs blazing fast and smooth.
erickdj said:
simple way to get awesome battery life without any extra steps is to install RoyalGlacier 1.6, that's all. A couple days ago I ran my phone for one and a half days before charging it again, and it still had 14% battery left. RG is pretty much a polished version of CM7, runs blazing fast and smooth.
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Click to collapse
does the royal ginger gets the same battery result?
iambryantho said:
does the royal ginger gets the same battery result?
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Click to collapse
Better than what's reported under CM7. The battery life I posted above was on RG.
you say you don't sacrifice 4g but you admit you have a 2g/edge widget?
To me "not sacrificing 4g" means not ever turning it off, maybe i'm mistaken
I had battery issues, I'd have to charge it mid day else it would die. Juicedefender helped a bit (claimed to do 1.7x battery life) but I uninstalled it, rooted the phone, and uninstalled a bunch of stock apps
For some reason now my battery lasts a very very long time, don't know how or why that is. I also admit I don't use it as heavily as some people, but my habits have not changed and I did have to charge it mid day (like i said) even with little usage
rosebud1 said:
How long does 1 of those batteries last?
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Click to collapse
Obviously, it's hard to say without describing how I use my phone, but I get probably 10-15 hours of medium-high usage. I probably get about 4-5 hours of talk time. I'd say the Chinese ebay batteries probably last 80-90% as long as the OEM battery. Quite decent considering the price.
My earlier thoughts about the BatteryCalibration app could be wrong. I don't really know all the details about how Android battery calibration works. I just assumed that it simply learns about all the bad spots in your battery so that your phone doesn't instantly jump from 80% to 30%. I also assumed that the phone would die when the battery had no power left, as opposed to when it says 0%, but maybe that's not the case. Regardless, if it helps you, more power to you and I appreciate you sharing the app. I didn't mean to come off as an unappreciative ****. If I did, sorry bout that.

Battery life wifi issue

Good day,
I just got my Infinity yesterday, and as a previous owner of the Transformer Prime, I know the kind of battery life to expect.I am getting around 5 hours of battery, half of what I got on the prime (both with no keyboard).
The strange thing is that the battery usage gives wifi 50-70% of usage. The screen is usually usually around 20%. Does any one else have this issue?
I am updated to the latest firmware: 9.4.5.22
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
THeflionking said:
Good day,
I just got my Infinity yesterday, and as a previous owner of the Transformer Prime, I know the kind of battery life to expect.I am getting around 5 hours of battery, half of what I got on the prime (both with no keyboard).
The strange thing is that the battery usage gives wifi 50-70% of usage. The screen is usually usually around 20%. Does any one else have this issue?
I am updated to the latest firmware: 9.4.5.22
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
Click to expand...
Click to collapse
I never owned any Prime but I have the same issue as you. Do everyone else have 50% wifi usage and about 5 hours battery or would it be a problem on some specific models ?
This is only a problem with statistics display on Android, not WiFi draining 50% of the battery. You can understand it as "WiFi mostly on" or something just try other battery widgets with their own stats, you can see my best apps thread.
I noticed the same thing. I was expecting the screen to be the major consumer, just like on my GNex, but was shocked when the Wifi was taking up so much. Yesterday I was downloading a ton, so I can see how it was then.Today not nearly as much wifi usage, and it still is taking 84% of my battery. Down to 89% after nearly 4 hours. Only 23 minutes of screen on time.
NickS VR4 said:
I noticed the same thing. I was expecting the screen to be the major consumer, just like on my GNex, but was shocked when the Wifi was taking up so much. Yesterday I was downloading a ton, so I can see how it was then.Today not nearly as much wifi usage, and it still is taking 84% of my battery. Down to 89% after nearly 4 hours. Only 23 minutes of screen on time.
Click to expand...
Click to collapse
Turn off auto-sync and see how the battery life is after a day of it just sitting there.
KilerG said:
Turn off auto-sync and see how the battery life is after a day of it just sitting there.
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Click to collapse
Well my mistake. The battery life started at 94% (forgot I reset the device) on that clock. After another 1.5 hours, it dropped 2% the way it was to 87%. Just turned off auto-sync and gps. We'll see how it does now.
As far as I'm concerned, it appears to be much better than my GNex. And I have a 41WH battery pack/USB charger for when I travel. I should be great with battery life.
My WiFi % on battery is way high too, but I'm not seeing a ton of battery drain. I'm at 92% after 3 hours with 10 mins of screen on time and auto sync on. WiFi is at 88% and screen at like 7%. Kind of odd but not noticing anything totally broken yet.
Same here
I was shocked at how fast the battery runs down on my Infinity. I've used mine for about an hour and a half so far today and it's at 65% already. Wifi shows as using 50% of the battery and I haven't really done any wireless work with it - mainly watching local videos. I'm getting about 4-5 hours of battery life every day.
Before anyone suggests that it's just a bad tablet - this is my second one. Both have behaved exactly the same way. I have installed Startup Manager and used it to disable all the live wallpapers, etc...from starting up when the device boots and it hasn't made any significant difference.
What's going on...?
location via wifi is the culprit
I also had this issue after I bought the tablet. The battery was drained even in sleep mode which was a clear sign something was not right.
There seems to be a bug with google maps that makes maps ask location way more often than necassary even when no settings for this are yet made..
I noticed this when turning wifi off for sleep to keep battery cosumption down and maps came up the biggest battery hog after this change.
The remedy is to first enable location settings in google maps (you have to do this first to get access to location settings) and then disable all location updates you don't need. I actually turned everything off from maps but I left wifi location enabled in system settings so I can still refresh location manually in apps that need it so for example apps like star chart can get my wifi location instead of gps in my apartment. In fixed location wifi is accurate enough and much faster than waiting for gps signal. So anyway now i can leave the tablet sleep for a day and it will only consume 1-2% at most even when wifi is on.. hope this helps.

Battery sucks! Faulty unit or crappy software? HELP

I have used this tablet for 2 days now and almost everything works perfect (thanks to latest ota) but there's one thing that is bothering me. Battery life. I had ipad 3 for 2 months but I finally sold it and bought the infinity. Now I know ios sucks on phones AND tablets. But the battery life was amazing. I could use it to browse and for games for 9 hours at least. But on the infinity I am lucky if I get 4 hours browsing. 4 hours sucks on a tablet. But I think that wifi is the problem. I have added 2 pictures were you can see I used the tablet for 1 hour last night then I used it for almost 3 more hours today. Now the battery is at 10%. But I was wondering why the battery uses 62%? On my galaxy nexus wifi is using 5%.
Have I got a faulty unit or is it like this for everyone? If so please let me know fast so I can send it back before it's too late.
Somethings not right there. Tests/reviews done by some major outlets (thinking PC World or Engadget) reported 9 hours of video play over wifi with screen at 50% brightness. iOS has always had good battery life due to their stict contols over the OS, but you should be seeing more then 4 hours. Hell I was at 40% and played WindUp Knight for hours straight last night which takes up much more battery then a movie. I usually don't suggest using task managers, but there is one built in by asus, I'd use it and see if you can kill some processes. Also be mindful which profile is being used. I stick to balanced most of the time and switch to low when the battery starts getting low (24%ish)
http://www.engadget.com/2012/06/25/asus-transformer-pad-infinity-tf700-review/
The TF700 packs a 25Wh battery rated for up to nine and a half hours of runtime. Indeed, it lasted nine hours and 25 in our battery rundown test, which involves looping a video with WiFi on and the brightness fixed at 50 percent.
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Thanks for the reply. I am always on Balanced and i am seeing over 20% down in an hour. Maybe i have a faulty unit?
I wouldn't be so sure. I was playing nova 3 on performance mode though.
jdeoxys said:
I wouldn't be so sure. I was playing nova 3 on performance mode though.
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Hmm so i'm not the only one. I hope Asus fixes this fast or im gonna have to return, but i can't see any tablet better then this atm.
armanisafarai said:
Hmm so i'm not the only one. I hope Asus fixes this fast or im gonna have to return, but i can't see any tablet better then this atm.
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Click to collapse
Well, what do you expect? It's going to take some power to push all the pixels on this massive resolution.
jdeoxys said:
Well, what do you expect? It's going to take some power to push all the pixels on this massive resolution.
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Click to collapse
Exactly, it all depends on what your doing OP. The movie scenerio in the review doesnt take much juice in that it uses the low power single core. I don't know for sure, but web browsing may require all 4 cores to kick in depending on exactly what your doing. Regardless, your wifi being a big consumer is easy to deal with. Somewhere in the settings is an option that automatically turns wifi off when screen is off.
Chief Geek said:
Exactly, it all depends on what your doing OP. The movie scenerio in the review doesnt take much juice in that it uses the low power single core. I don't know for sure, but web browsing may require all 4 cores to kick in depending on exactly what your doing. Regardless, your wifi being a big consumer is easy to deal with. Somewhere in the settings is an option that automatically turns wifi off when screen is off.
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Click to collapse
Well, all i was doing was using chrome... I think it's pretty bad when i cant browse for more then 4 hours on a tablet. I thought it had to do something with WiFi since its using over 62%. I did the same test with my nexus where i i just used chrome and when i looked in battery , wifi only used 10%. Maybe there is a bug with wifi?
Try Battery HD for some averages/estimates.
I tend to get about 9+ hrs of reading, balanced mode, WiFi off, and about 7 hrs of browsing over WiFi (undocked, dock charges me about 2/3 full), but it all drops down drastically for gaming, which is about 4 hrs you mentioned.
If you get 4 hrs of pure browsing, I'd consider re-flashing, wiping data and - if these don't help - returning your device.
Chief Geek's point has much merit, and you could always look at (for example) GreenPower or some other time-/screen-based toggler. They do pretty well, and you do not even lose out anything except direct push functionality. (Does it really matter for 99.9% of mail when it comes in once every 15 or 30 minutes? When it does (when you're buying a house or something), shut down the toggler for the time being and cope with some battery drain, then when the situation has resolved, enable it again.
And try using BetterBatterStats for your statistics -- the main battery stat app Android offers has some quirks to prevent meaningful interpretations of many scenarios. Let that get a few charging/discharging cycles and then look at the stats.
So battery hd tells me I should get 8 hours of browsing and 9 for video playback. Will do another test tomorrow with screen on whole time and see how long it will last watching videos. Also battery hd tells me I can play 3d games for only 2 hours. Eh
MartyHulskemper said:
Chief Geek's point has much merit, and you could always look at (for example) GreenPower or some other time-/screen-based toggler. They do pretty well, and you do not even lose out anything except direct push functionality. (Does it really matter for 99.9% of mail when it comes in once every 15 or 30 minutes? When it does (when you're buying a house or something), shut down the toggler for the time being and cope with some battery drain, then when the situation has resolved, enable it again.
And try using BetterBatterStats for your statistics -- the main battery stat app Android offers has some quirks to prevent meaningful interpretations of many scenarios. Let that get a few charging/discharging cycles and then look at the stats.
Click to expand...
Click to collapse
I installed betterbatterystats last night, will do more testing.
armanisafarai said:
So battery hd tells me I should get 8 hours of browsing and 9 for video playback. Will do another test tomorrow with screen on whole time and see how long it will last watching videos. Also battery hd tells me I can play 3d games for only 2 hours. Eh
Click to expand...
Click to collapse
Remember that these are just averages for your device, at least in the beginning.
If you mistreated your battery upon receiving it, it can kill battery life. You are suppose to plug in your asus tablet for at least 8 hours (well beyond the tablet would say the battery is 100%) the first time you get it. This is sound advice for any new Lithium Ion Battery.
Then you can start using it. Letting the battery die at 0% also decrease the life of the Li-Ion battery every time it happens (ignore old sites that say you should do a full discharge cycle every 2 weeks, that was for old Nickel Cadmium batteries).
Juice Defender is typically a phone app but you can run it as well to detect if any background processes are eating up your battery life.
I get almost 10 hours on my TF700 with moderate usage (mix of browsing, video playback, reading, etc.).
Diogenes5 said:
If you mistreated your battery upon receiving it, it can kill battery life. You are suppose to plug in your asus tablet for at least 8 hours (well beyond the tablet would say the battery is 100%) the first time you get it. This is sound advice for any new Lithium Ion Battery.
Then you can start using it. Letting the battery die at 0% also decrease the life of the Li-Ion battery every time it happens (ignore old sites that say you should do a full discharge cycle every 2 weeks, that was for old Nickel Cadmium batteries).
Juice Defender is typically a phone app but you can run it as well to detect if any background processes are eating up your battery life.
I get almost 10 hours on my TF700 with moderate usage (mix of browsing, video playback, reading, etc.).
Click to expand...
Click to collapse
All correct -- there is a lot of disinformation going on with batteries (especially regarding the charging cycles, although a single, long, full charge and then draining to zero charge actually helps calibrate the battery indication algorithms in the device). The optimum minimum charge level seems to be about 40% or so I've read.
Juice Defender and Greenpower toggle WiFi on either time- or location-based profiles, and that works on tablets as well. Recommended!
Your phone doesnt actually discharge a battery to zero. The thing with lithium batteries is they maintain voltage untill nearly the end. This is a very large benifit for modern devices. Once the voltage starts to drop the phones circuitry cuts it off and prevents it from powering on with the LVC circuit that checks the battery before allowing phone to power on then immeditately cuts it (first attempting a power down then all out power cut). This happens to protect the battery. So what the phone considers a dead battery is simply an exhausted battery ready for charge. If a lithium is actually dischardged completely it will damage the cell and prevent it from taking a charge. The power being given to it is then converted to heat. The battery then ignites and very very bad things happen such as your house burning down. The point of all that is to point out that discharging your phone to "zero" isn't actually doing any damage past the normal wear and tear on the battery. I buy batteries that cost hundreds for some of my RC hobbies and have learned the hard way about how lithium batteries work. (bypassed LVC and ruined a $80 3S2P pack)
Diogenes5 said:
If you mistreated your battery upon receiving it, it can kill battery life. You are suppose to plug in your asus tablet for at least 8 hours (well beyond the tablet would say the battery is 100%) the first time you get it. This is sound advice for any new Lithium Ion Battery.
Then you can start using it. Letting the battery die at 0% also decrease the life of the Li-Ion battery every time it happens (ignore old sites that say you should do a full discharge cycle every 2 weeks, that was for old Nickel Cadmium batteries).
Juice Defender is typically a phone app but you can run it as well to detect if any background processes are eating up your battery life.
I get almost 10 hours on my TF700 with moderate usage (mix of browsing, video playback, reading, etc.).
Click to expand...
Click to collapse
i have actually read that Li-Ion batteries can be used out of the box. Sp i turned on my infinity right away. I put the charger in, but i still used the tablet. It was about 25% when i got it out of the box. So what you're saying is that i have basically ****ed up the battery? If so, then i will return and get a new one. But i dont understand why most people say that you can usre a device with Li-Ion battery staright out of the box without needing to charge it first.
Chief Geek said:
Your phone doesnt actually discharge a battery to zero. The thing with lithium batteries is they maintain voltage untill nearly the end. This is a very large benifit for modern devices. Once the voltage starts to drop the phones circuitry cuts it off and prevents it from powering on with the LVC circuit that checks the battery before allowing phone to power on then immeditately cuts it (first attempting a power down then all out power cut). This happens to protect the battery. So what the phone considers a dead battery is simply an exhausted battery ready for charge. If a lithium is actually dischardged completely it will damage the cell and prevent it from taking a charge. The power being given to it is then converted to heat. The battery then ignites and very very bad things happen such as your house burning down. The point of all that is to point out that discharging your phone to "zero" isn't actually doing any damage past the normal wear and tear on the battery. I buy batteries that cost hundreds for some of my RC hobbies and have learned the hard way about how lithium batteries work. (bypassed LVC and ruined a $80 3S2P pack)
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Click to collapse
Nothing to add, technical and extensive, but fully correct, sir. I think we may have had a slight misunderstanding, however: my point was that discharging your phone to 'zero' (and as you rightfully point out, that is not an actual fully discharged battery state) is a required step in calibrating most device's algorithms (some devices, such as my SGS2 do not need this because of advanced hardware). I'd rather not fully discharge any Li-Ion batteries either.
Sent from my ASUS Transformer Pad TF700T
armanisafarai said:
i have actually read that Li-Ion batteries can be used out of the box. Sp i turned on my infinity right away. I put the charger in, but i still used the tablet. It was about 25% when i got it out of the box. So what you're saying is that i have basically ****ed up the battery? If so, then i will return and get a new one. But i dont understand why most people say that you can usre a device with Li-Ion battery staright out of the box without needing to charge it first.
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Click to collapse
A typical case of RTFM, an affliction I sometimes suffer from as well, as do most men. Hahaha! Do you think ASUS put it in the manual for laughs, or just to give you a few more hours of painful desire to use your device while you cannot, yet? Nah, it's there for a reason. Sometimes, though -- and again that's SGS2 experience -- just running a few battery cycles might make the readout correspond to the actual battery level again. You could at least give it a try, right?
Sent from my ASUS Transformer Pad TF700T
armanisafarai said:
I have used this tablet for 2 days now and almost everything works perfect (thanks to latest ota) but there's one thing that is bothering me. Battery life. I had ipad 3 for 2 months but I finally sold it and bought the infinity. Now I know ios sucks on phones AND tablets. But the battery life was amazing. I could use it to browse and for games for 9 hours at least. But on the infinity I am lucky if I get 4 hours browsing. 4 hours sucks on a tablet. But I think that wifi is the problem. I have added 2 pictures were you can see I used the tablet for 1 hour last night then I used it for almost 3 more hours today. Now the battery is at 10%. But I was wondering why the battery uses 62%? On my galaxy nexus wifi is using 5%.
Have I got a faulty unit or is it like this for everyone? If so please let me know fast so I can send it back before it's too late.
Click to expand...
Click to collapse
I see the same picture here. Looking at the battery stats I see WIFI using >90% of the battery when surfing in balanced/50% backligt mode.
Hope they fix this.

[Q] Worse Battery Life-Is it same with you?

Hello,
I bought new HTC ONE S (Factory Unlocked-nothing rooted or fishy stuff) two days ago.
As soon as I purchased it I upgraded my OS from ICS to Jelly Bean using HTC auto-update.So I was unable to test battery life on ICS however it is pretty bad now. This is new phone so I don't know whether the JB update has caused this problem.
It can't last more than 2 hours on full use. Just played temple run for 10 minutes and battery dropped down to from 70 to 65% . So in 10 minutes of game play battery dropped by 5% . On this speed it won't last more than an hour on any hd video. Similarly on Wifi use or google market browsing it drops down quicker than my laptop battery.
So is it normal for HTC ONe S or upgrade is causing this? I also turned on power saver option in new Jelly Bean but no improvement. What is the solution please I need help and I love this phone. (No apps stand out in draining battery life).
Thanks
Ahmar.
ahmar2 said:
Hello,
I bought new HTC ONE S (Factory Unlocked-nothing rooted or fishy stuff) two days ago.
As soon as I purchased it I upgraded my OS from ICS to Jelly Bean using HTC auto-update.So I was unable to test battery life on ICS however it is pretty bad now. This is new phone so I don't know whether the JB update has caused this problem.
It can't last more than 2 hours on full use. Just played temple run for 10 minutes and battery dropped down to from 70 to 65% . So in 10 minutes of game play battery dropped by 5% . On this speed it won't last more than an hour on any hd video. Similarly on Wifi use or google market browsing it drops down quicker than my laptop battery.
So is it normal for HTC ONe S or upgrade is causing this? I also turned on power saver option in new Jelly Bean but no improvement. What is the solution please I need help and I love this phone. (No apps stand out in draining battery life).
Thanks
Ahmar.
Click to expand...
Click to collapse
Battery will improve after a few full charges / discharges as it conditions the battery! I dont play games on it but i've never had less than 18 hrs!
I play games every now and then. With heavy games and USB controller I get roughly 2-2.5h of batterylife. Oh, thats with Wifi on as well.
If I play without the USB controller I get maybe 3-3.5h batterylife.
With my use, excluding the games, I get at least 2 days worth of battery.
Why me
Goatshocker said:
I play games every now and then. With heavy games and USB controller I get roughly 2-2.5h of batterylife. Oh, thats with Wifi on as well.
If I play without the USB controller I get maybe 3-3.5h batterylife.
With my use, excluding the games, I get at least 2 days worth of battery.
Click to expand...
Click to collapse
Then what do you think why my mobile is showing such poor battery life?
Ive never used stock JB, so dunno if that might be the cause. I havnt had any battery problems on stock ics, viper 1.2.1 or dark jelly CM10.
ahmar2 said:
Then what do you think why my mobile is showing such poor battery life?
Click to expand...
Click to collapse
With stock JB I got 3-4 hours of screen-on time, and roughly about 24-30 hours of battery life total. That included a little gaming but mostly web browsing. I don't have experience on ICS because I also upgraded to JB straight away when I got the phone.
Your battery life seems normal to me considering the age of your phone. See if it improves within the next 5-10 empty-full cycles. As mentioned, the battery needs a couple of cycles before it reaches its' full potential.
Now I've been running CM10 for about a day, so can't really compare to it just yet. It feels lighter on the battery, but it might be placebo. I took it off the charger at around 7:00 this morning and now I'm at 85% and local time here is 14:45.
Current status on mine. Ive used it for a couple of hours total browsing the web and remotecontrolling my PC, done a couple of short calls and sent a few texts. In other words - quite light work.
Still, I think its quite acceptable batterylife
Edit: and as you can see, it never really goes into deep sleep for long periods of time.
Goatshocker said:
Current status on mine. Ive used it for a couple of hours total browsing the web and remotecontrolling my PC, done a couple of short calls and sent a few texts. In other words - quite light work.
Still, I think its quite acceptable batterylife
Edit: and as you can see, it never really goes into deep sleep for long periods of time.
Click to expand...
Click to collapse
hmm I guess like others said I will have to let it charge/discharge few times and then see how it goes. Will update after two days.

[Q] Awful battery life - just me?

I got my Nexus 5 on Monday and have been pretty happy with it so far. Today was the first day I actually had to be away from WiFi for the day and the battery life has stunned me with how poor it has been. I haven't seen battery drop so fast since I had my Desire HD. I took it off charge about 9am and at just after 8pm as I type this I'm down to 10% with under 2 hours screen on time. 100% to 10% in around 10 hours with less than 2 hours screen use.
Has anyone else had this poor battery life? I'm going to let it run down completely, install GSam and see if it happens again but from what I've read on a few reviews (The Verge was the main one) this seems to be almost normal. I would be unhappy with battery life this bad after two years, not two days.
Dyonas said:
I got my Nexus 5 on Monday and have been pretty happy with it so far. Today was the first day I actually had to be away from WiFi for the day and the battery life has stunned me with how poor it has been. I haven't seen battery drop so fast since I had my Desire HD. I took it off charge about 9am and at just after 8pm as I type this I'm down to 10% with under 2 hours screen on time. 100% to 10% in around 10 hours with less than 2 hours screen use.
Has anyone else had this poor battery life? I'm going to let it run down completely, install GSam and see if it happens again but from what I've read on a few reviews (The Verge was the main one) this seems to be almost normal. I would be unhappy with battery life this bad after two years, not two days.
Click to expand...
Click to collapse
The good battery apps like BBS are broken on KitKat.
But your battery life is not normal. Mine is quite good, about what I would expect. For reference, my GS3 would use 0.2-0.4% per hour while idling during the night. I can't get real numbers or monitor wakelocks on this phone yet. But so far, seems at least somewhat similar to that.
Use Greenify.
Dyonas said:
I got my Nexus 5 on Monday and have been pretty happy with it so far. Today was the first day I actually had to be away from WiFi for the day and the battery life has stunned me with how poor it has been. I haven't seen battery drop so fast since I had my Desire HD. I took it off charge about 9am and at just after 8pm as I type this I'm down to 10% with under 2 hours screen on time. 100% to 10% in around 10 hours with less than 2 hours screen use.
Has anyone else had this poor battery life? I'm going to let it run down completely, install GSam and see if it happens again but from what I've read on a few reviews (The Verge was the main one) this seems to be almost normal. I would be unhappy with battery life this bad after two years, not two days.
Click to expand...
Click to collapse
We can't really answer about your phone without knowing your usage habits. I mean, what you posted doesnt seem bad, especially if you're in a crappy signal area or play games.
my battery has been around 20% better than on the N4
Sent from my Nexus 5 using xda app-developers app
Coming from an iPhone 4, I am shocked by how much faster Android is sipping on the juice.On my iPhone, I would probably be around 70% 7 hours into the day, my N5 is at 50%.
47% after 11 hrs for me
thfreedumb said:
We can't really answer about your phone without knowing your usage habits. I mean, what you posted doesnt seem bad, especially if you're in a crappy signal area or play games.
Click to expand...
Click to collapse
A brief summary of my brief usage. I haven't played any games at all since I got the phone and the only usage has been social network apps and very light browsing of around <20 minutes. Oh and I made a call that lasted around 15 seconds. Everything else is stock setup. I have unlocked the bootloader but I did that prior to setting it up due to it wiping everything in the process.
Basically I've used it as much as I'd use my Nexus 4 and that wouldn't see so much as a 30% drain by now. The only thing that I am looking at as a possible cause is that the phone defaults to wanting 4G only. I'm not on a 4G plan or in a 4G area but even with that Mobile Standby is only showing 4% battery use. Suffice to say I switched that to 3G when I saw it just before posting. As I said, I'm going to drain it completely then charge to full and watch it very closely but I wanted to get thoughts while I waited.
I have contacted Google to see if there are any known issues that have popped up but the response I got just suggests turning off practically everything! Why would I opt for a powerful phone just to turn off sync, location services and anything that makes it a smartphone? The baffling one to me is suggesting I switch to AIRPLANE mode if I'm not near WiFi! I didn't buy a WiFi only tablet, I bought a phone!
"If you know you won’t be near a mobile or Wi-Fi network for a while, switch to Airplane mode"
I have been very pleasantly surprised with the battery life with my Nexus 5, I have noticed however that Google Location service likes to use battery power, more importantly - GPS - way too much..
However, I leave it on and even still it easily lasts me a day of use, with around 30-40% left depending on how much I use it.
What are your highest apps in the battery use screen?
Try turning off Google location services.
I am really pleased with battery life. Around 30-40 % left at end of day.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Just you.all stock and battery life is way better than galaxy s4.
LaurenceGough said:
I have been very pleasantly surprised with the battery life with my Nexus 5, I have noticed however that Google Location service likes to use battery power, more importantly - GPS - way too much..
However, I leave it on and even still it easily lasts me a day of use, with around 30-40% left depending on how much I use it.
What are your highest apps in the battery use screen?
Click to expand...
Click to collapse
I saw similar with the Nexus 4 but refused to switch off location services and it seems ok. I've attached screenshots just taken. It seems I was a little off with my browsing estimate which shows 36 minutes in Chrome but still hardly astronomical.
OK so far the general opinion seems to be that it's just me. That helps me eliminate the phone and / or battery just being awful so thanks guys.
I'm at near 11 hours and am at 69%.. with an hour screen time. Not great but it easily gets me through the day. By the time I plug it in tonight it will probably have 20-30% and 3 maybe 4 hours of OST. That's more than enough for me
I should mention I have location off.. and only turn it on if I'm going to use the GPS
I also have Google Now off I don't need those flash cards to tell me how long it's going to take me to get home.. it's useful sometimes but I rarely look at em.
I'm pleased with my battery so far.. for the super heavy user they definitely wouldn't get a day.. but for me I'll get it easily.
its been pretty terrible for me with identical setups as other devices.
it has me seriously contemplating going back to my htc one. overall i do love the phone tho so hopefully I get a better idea when betterbatterystats is updated.
Few things with battery thats annoying me is google services kill this phone worse than any other ive owned. Even with google now disabled and location disabled. Also my daily drive to work I always use waze w/ screen on. With my other phones (htc one / n4 / iphone 5) i generally lose between 10-15% battery. On this phone im easily losing 25%.
I have access to charging so not a huge deal for now. Its a new os update so maybe it will get ironed out.
garyHal said:
Coming from an iPhone 4, I am shocked by how much faster Android is sipping on the juice.On my iPhone, I would probably be around 70% 7 hours into the day, my N5 is at 50%.
Click to expand...
Click to collapse
you are forgetting you are having a full HD and quad core phone now.
Ahh you got that google services bug eh.. that will kill any battery
Despite not wanting to I did a factory reset and installed a handful of apps, nothing that should cause issues anyway. When I got to Twitter though just after installing I noticed two warning notifications crop up that I remember just dismissing without thinking last time.
com.google.android.gsf.login
com.google.android.calendar
Both state they need installation of Google Play Services. I've ignored them for now so it'll be interesting to see if they have anything to do with it. I know the screen is going to be using more battery than I'm used to when it's on and notice that in battery use it's just everything else.
Friday will be the ultimate test of sorts. I've disabled WiFi, I'm charging it up and have disabled a few location things I don't care about. If it goes down hard again then it's going back.
thegtfusion said:
you are forgetting you are having a full HD and quad core phone now.
Click to expand...
Click to collapse
And a MUCH larger battery
My battery life over the last 3 days on the N5 has been equal to and a little bit better than my GS4 I've had since launch. Very pleased
Dyonas said:
OK so far the general opinion seems to be that it's just me. That helps me eliminate the phone and / or battery just being awful so thanks guys.
Click to expand...
Click to collapse
I don't think what you're getting is that out of the ordinary. Between screen time and cell reception (the largest contributors to battery life) you could easily be seeing 'normal' battery life.
Don't expect more than 3.5 hrs of screen time, especially if you have reception issues when not on WIFI. And I'm talking 'normal' computer/dev/IT guy usage (e.g. using the phone as it's intended aka using google now, using one or two emails with push sync, using music services occasionally and sparingly during a day, NOT running in airplane mode, not disabling a crapload of smartphone features).

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