Ok I think I found an issue with my infinity and need some confirmation. Here is the test. Charge tablet to full. I remove from charger and spend 10-15 minutes browsing the Web. Now check battery usage. Is Wifi your number on power drain? Here is what mine looks like.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
For comparison I used my xoom tablet for 10-15 minutes doing similar activities and my wifi power usage was around 2%.
Also just an FYI I'm not in a strange wifi environment that creates any issues. I'm about 6 feet from my wifi hub and I noticed this usage today after work where wifi was between 50-60% of my total usage and that was on my work wifi.
Anyway I'd be really interested to hear if anyone is seeing a similar issue. I also created a ticket with Asus asking about this issue.
I hope you know that the stock battery stats are very unreliable. Under a better battery stats app, I've found that wifi isn't quite as consuming as apps, so I think the system stats are incorrect
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
ethion said:
Ok I think I found an issue with my infinity and need some confirmation. Here is the test. Charge tablet to full. I remove from charger and spend 10-15 minutes browsing the Web. Now check battery usage. Is Wifi your number on power drain? Here is what mine looks like.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Click to expand...
Click to collapse
My wifi doesn't even show up. My unit is fine..
Mine has it. I doubt its that big of an issue anyway.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
xRevilatioNx said:
My wifi doesn't even show up. My unit is fine..
Click to expand...
Click to collapse
Your is what I'd expect. In fact you got 91% after two hours. That is better than my xoom. This explains why some people claim good performance and battery life. Mine will be below 90% in like 30 minutes usage.
I think there is a wifi issue and this might be a way of identifying bad tablets. I'll see what the ASUS support people say and post it here. The bad news is this looks like a hardware issue...
Before I completely get excited can you make sure your wifi is always on. Go to settings, wifi, advanced, make sure keep wifi on during sleep is always.
xRevilatioNx said:
My wifi doesn't even show up. My unit is fine..
Click to expand...
Click to collapse
I was just noticing that you tablet doesn't have the asus icons for back, home, tasks. Are you using a stock infinity for your screen shot?!!
ethion said:
I was just noticing that you tablet doesn't have the asus icons for back, home, tasks. Are you using a stock infinity for your screen shot?!!
Click to expand...
Click to collapse
The screenshot is also missing the "ASUS Customzied setting" menu option on the left, right under Apps. Looks like either custom ROM or not an ASUS tablet perhaps.
For what it is worth, I have noticed the same issue with my Wifi eating up tons of battery. I haven't done any tests, but it certainly feels like my battery is draining pretty quickly with Wifi on. It is certainly draining much faster than my TF101....I would expect that to be the case to some extent because of the processor and screen upgrade, but not this much. There is another thread going on TranformerForums about the same issue. Someone reported that leaving their device fully charged with Wifi turned on overnight had drained it down to 19% by morning, with no use.
Not sure yet if this is a real issue, but it seems strange that Wifi would use significantly more battery than Screen.
-Chris
Don't rely on the battery usage screen. It's not like it's got an ammeter coupled to every battery drain. It just calculates percentages based on the information it got, it's all guesswork and needs lot of calibration to be correct. The reason WiFi is blamed as the major drain is probably that it's running all the time (and its power usage might not be calibrated for the battery usage screen). The stats won't know at all if e.g. the kernel gets stuck in an infinite loop and drains the battery...
Personally, I only trust the info the battery usage screen gives me about apps. If an app has a high percentage, it's probably not right. The rest of the breakdown is mostly bogus.
firetech said:
Don't rely on the battery usage screen. It's not like it's got an ammeter coupled to every battery drain. It just calculates percentages based on the information it got, it's all guesswork and needs lot of calibration to be correct. The reason WiFi is blamed as the major drain is probably that it's running all the time (and its power usage might not be calibrated for the battery usage screen). The stats won't know at all if e.g. the kernel gets stuck in an infinite loop and drains the battery...
Personally, I only trust the info the battery usage screen gives me about apps. If an app has a high percentage, it's probably not right. The rest of the breakdown is mostly bogus.
Click to expand...
Click to collapse
Well something is eating battery fast.. I have my xoom and my infinity sitting side by side right now and my xoom is at 80% battery after 2:30 hours on while the Infinity is at 62% after 2:41 on. So the infinity is draining battery about twice as fast as my xoom. And the xoom shows the top battery usage as the screen where wifi isn't even making the list.
ethion said:
Ok I think I found an issue with my infinity and need some confirmation. Here is the test. Charge tablet to full. I remove from charger and spend 10-15 minutes browsing the Web. Now check battery usage. Is Wifi your number on power drain? Here is what mine looks like.
Click to expand...
Click to collapse
There are already some threads that discuss this topic. The battery meter has a bit of a bug where it shows the WiFi % based on how long the wifi has been connected rather than how much actual power it has used. Mine does the same thing with 85% battery atm but it has been running off of the charger for 1d 13h and still has 37% left.
It is a battery meter issue and not an energy drain issue.
Xoom is now 68% after 3:30
Infinity is now 50% after 3:40
ethion said:
Xoom is now 68% after 3:30
Infinity is now 50% after 3:40
Click to expand...
Click to collapse
Well, the Infinity has more hardware to give power to.
However, my Infinity is at 62% after 10 hours... Most (about 80%) of that time, it's been sleeping (but on), though. Did you actively use both your Xoom and Infinity during the reported time?
How does the detailed battery usage screen (touch the graph in the normal battery usage screen) look? Here's mine (the gap is a reboot):
Google services... Back in my day, these botnets ran silently.
Sent from my FHD porn machine.
firetech said:
Well, the Infinity has more hardware to give power to.
However, my Infinity is at 62% after 10 hours... Most (about 80%) of that time, it's been sleeping (but on), though. Did you actively use both your Xoom and Infinity during the reported time?
How does the detailed battery usage screen (touch the graph in the normal battery usage screen) look? Here's mine (the gap is a reboot):
Click to expand...
Click to collapse
Yes I've been kinda using them. I've had them in google plus and swipe around every once in awhile.
I left for lunch and turned them both off.
infinity is now at 40% and xoom is at 55%. a bit over 6 hours since both were pulled off the charger. Screen has been on over 4 hours.
Here is the current status of infinity 37 percent
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Here is the picture of my xoom at 53%
From just eyeballing the two graphs it looks like the infinity sleeps better where my xoom is staying active constantly. None the less when the screen is on the infinity consumes power quite a bit faster.
It is clear that the xoom does quite a bit better on battery life than the infinity.
Mine does this too, but battery life is solid
Sent from my Jelly Beaned GNexus
Battery Drain
I just got mine yesterday and the battery drain is unexceptionable. I fully charged it last night and then was off and on it this morning before going to work. After getting into the office it was more than 50% drained and before lunch it was well below 30%. I have the TF101 and it hasn't been charged in two days and it is still at 79% with everything turned on.
I have not had a chance to look into this but I find that amount of drainage excessive.
On a side note I pretty much just have the stock apps running on this. I did just do a cold boot so I will see if that helps at all.
Rex
Related
I seems like we have a discrepancy in how much battery life a TF uses in standby. Some folks seem to be burning <1%/hour, others >3%/hour. Obviously, this makes a huge difference in the total time a TF can be expected to last on a charge.
Please indicate how much yours burns per hour. Please ONLY answer if you run your TF as follows:
1. NOT in airplane mode
2. With wifi in the default (run in background) configuration
What setting is to run wifi in the background?
Also, would the number of apps (singned in) and thinks like exchange emails factor into this?
IIJBII said:
What setting is to run wifi in the background?
Also, would the number of apps (singned in) and thinks like exchange emails factor into this?
Click to expand...
Click to collapse
Yep, a lot of things could impact this. But, the dichotomy seems so clear-cut (literally, <1%/hour for some people vs. >3%/hour for others) that I don't think those things by themselves can account for the difference.
wynand32 said:
Yep, a lot of things could impact this. But, the dichotomy seems so clear-cut (literally, <1%/hour for some people vs. >3%/hour for others) that I don't think those things by themselves can account for the difference.
Click to expand...
Click to collapse
I understand and agree. There should be some type of baseline. can you explain what Wifi setting you mentioned above? I have 3 options - Sleep when screen is off, Never when plugged in and Never - I know thats not exactly how they read but its something like that.
Sent from my Transformer TF101 using Tapatalk
IIJBII said:
I understand and agree. There should be some type of baseline. can you explain what Wifi setting you mentioned above? I have 3 options - Sleep when screen is off, Never when plugged in and Never - I know thats not exactly how they read but its something like that.
Sent from my Transformer TF101 using Tapatalk
Click to expand...
Click to collapse
The default is to "Never" disconnect...
Dunno how many %/hour, but I've gotten from 14 hours to 17 hours.
Picked up the transformer once in a while, put it down, etc..
Here's a screenshot of the 14hr one, charged it at the end for a few minutes.
wynand32 said:
Yep, a lot of things could impact this. But, the dichotomy seems so clear-cut (literally, <1%/hour for some people vs. >3%/hour for others) that I don't think those things by themselves can account for the difference.
Click to expand...
Click to collapse
So you don't think the amount of data being communicated per application affects battery use in idle?
What do you think about signal strength from the WAP? (being further from the WiFi router, in another room, many walls and objects between the unit and the WAP)
FrayAdjacent said:
So you don't think the amount of data being communicated per application affects battery use in idle?
What do you think about signal strength from the WAP? (being further from the WiFi router, in another room, many walls and objects between the unit and the WAP)
Click to expand...
Click to collapse
I'm comparing my results to what I'm seeing on the Xoom, which is pretty much identically configured to my TF (same email accounts, same apps installed and running, used with the same routers, etc.). The Xoom uses well under 1%/hour on standby, the TF right around 3.5%/hour.
I'very configured my TF to turn WiFi off when sleeping.
Yesterday my TF was unplugged and unused for a full 24 hours for an 8% battery drain.
Regards,
Davw
The reason there will be discrepencies between peoples devices is because everyone installs different apps. It's these apps that drain the battery more/less, so install a battery monitoring app and check the logs every few days. If you're losing more than 1% on standby per hour, then get a task killer program and tasker, and set up schedules to turn off apps at times you dont need them. Also make sure you have actually set the battery app up properly, by changing the rating it thinks the battery is (to 6600mA) instead of any default value it has.
stuntdouble said:
The reason there will be discrepencies between peoples devices is because everyone installs different apps. It's these apps that drain the battery more/less, so install a battery monitoring app and check the logs every few days. If you're losing more than 1% on standby per hour, then get a task killer program and tasker, and set up schedules to turn off apps at times you dont need them. Also make sure you have actually set the battery app up properly, by changing the rating it thinks the battery is (to 6600mA) instead of any default value it has.
Click to expand...
Click to collapse
How would one change the battery to 6600ma instead of the default
dazz87 said:
How would one change the battery to 6600ma instead of the default
Click to expand...
Click to collapse
If you are using Battery Monitor Widget then it's from settings>monitoring preferences>battery capacity. Default was 1200mA on mine originally. If you're using some other app, I've no idea.
As an update, I decided to go ahead and do a factory restore, just for kicks. I'm not experiencing much closer standby performance to my Xoom, about 1%/hour or maybe a bit less. In four hours since the restore, I've lost 5% battery life, and that includes a bit of use.
It's possible that the battery just hasn't calibrated since the restore, and so I'll report back if things return to what they were before. At this point, though, I'm hopeful that something was corrupted or misconfigured, and that a factory restore did indeed resolve the issue.
stuntdouble said:
If you are using Battery Monitor Widget then it's from settings>monitoring preferences>battery capacity. Default was 1200mA on mine originally. If you're using some other app, I've no idea.
Click to expand...
Click to collapse
Coolthanks for the info will have to check out that app. Right now i am using battery indicator pro whicb does not have a option to change battery capacity
Another update after the factory reset: charged the TF to 100% and unplugged at midnight. At 8:00am this morning it was at 78%, so roughly 2.75%/hour discharge rate. At 10:00am (also only on standby) it was at 74%, so 2.6%/hour total for the 10 hours.
The Xoom was at 48% at 8:00am (forgot to note its battery life at midnight), and at 10:00am (also on standby) was at 47%. So, the Xoom on standby is burning .5%/hour, which has been my general experience with it.
Both the Xoom and the TF are configured with the same email accounts and settings, the same general configuration (wifi, etc.), and the same apps except for the Asus apps. Since my experience on standby was roughly the same with the original (non-updated) TF build, I don't think it's the Asus apps that are causing the burn.
If most others were experiencing the same thing, I'd write this off as a purely academic exercise. 2.5%/hour burn rate on standby isn't terrible, particularly since I tend to charge every night anyways. My concern, though, is that if others are getting <1%/hour with the same basic settings, and as I'm getting on the Xoom for sure, then the question becomes: is there something wrong with my TF specifically?
Well my transformer is doing better than that. I lost only 3 over 5 hours. Overnight from 10 to 10 battery went from 33 to 27 percent so looking at 0.6 % per hour. Btw I have wifi set to turn off with screen off. Why do I need wifi going if I can't see the screen. For mail when would wake the device it checks the accounts immediately. So........
Sent from my Transformer TF101 using Tapatalk
I've had my TF with me most of the day letting friends play around with it so it's had what I would consider "normal" use.
Starting at 100% this morning when I left and now has 65% after ~8 hours. (See attached screenshot)
I am battery anal too but anyone else feel like discussing a 2% drain difference in idle is kind of ridiculous.. no one runs exactly the same stuff on their devices of course it will be different... to be honest if you are concered about battery drain during idle.. you obviously leave your device unused alot... in which case battery life doesn't matter a great deal cuz you aren't using it hahhha
Sent from my MB860 using XDA App
nsstrunks said:
I've had my TF with me most of the day letting friends play around with it so it's had what I would consider "normal" use.
Starting at 100% this morning when I left and now has 65% after ~8 hours. (See attached screenshot)
Click to expand...
Click to collapse
How did you get battery stats. To work?
Sent from my Transformer TF101 using Tapatalk
Kaoe said:
I am battery anal too but anyone else feel like discussing a 2% drain difference in idle is kind of ridiculous.. no one runs exactly the same stuff on their devices of course it will be different... to be honest if you are concered about battery drain during idle.. you obviously leave your device unused alot... in which case battery life doesn't matter a great deal cuz you aren't using it hahhha
Sent from my MB860 using XDA App
Click to expand...
Click to collapse
Disagree with you. I think standby life is very important because the tablet is something you wanna pickup and have immediate access to for information a nd media without always Worrying if the battery's has enough juice. My nook color can go several days on stby and 3 to 4 days of casual use with standby. This tab doing same stuff is giving me 36 hours tops.
Cm7 on nook color has sleep issues and so doesn't enter deep sleep and so battery drain is about 2% instead of. 2% per hour on stock nook.
maybe our devices aren't sleeping deeply and draining much faster.
Something a Dev. can check?
Sent from my Transformer TF101 using Tapatalk
Hi,
just got my brand new Transformer Infinity today and I'm pretty disappointed with battery life - without dock it lasts something between 5 and 6 hours while watching youtube and browsing web and that's not much more than my HTC One X. I found out that wifi drains more battery than the screen - 40%, which is pretty weird, because I'm sitting right next to the router and wifi signal is always stronger than -50dB. Have someone experienced something similar?
Battery stats are here: http :// db.tt/TSx6RHtB (please remove spaces, I'm new to the forums, so cannot post links yet).
giedriusc said:
Hi,
just got my brand new Transformer Infinity today and I'm pretty disappointed with battery life - without dock it lasts something between 5 and 6 hours while watching youtube and browsing web and that's not much more than my HTC One X. I found out that wifi drains more battery than the screen - 40%, which is pretty weird, because I'm sitting right next to the router and wifi signal is always stronger than -50dB. Have someone experienced something similar?
Battery stats are here: http :// db.tt/TSx6RHtB (please remove spaces, I'm new to the forums, so cannot post links yet).
Click to expand...
Click to collapse
It's only a stat, doesn't mean that WiFi *drains* your battery..
giedriusc said:
Hi,
just got my brand new Transformer Infinity today and I'm pretty disappointed with battery life - without dock it lasts something between 5 and 6 hours while watching youtube and browsing web and that's not much more than my HTC One X. I found out that wifi drains more battery than the screen - 40%, which is pretty weird, because I'm sitting right next to the router and wifi signal is always stronger than -50dB. Have someone experienced something similar?
Battery stats are here: http :// db.tt/TSx6RHtB (please remove spaces, I'm new to the forums, so cannot post links yet).
Click to expand...
Click to collapse
Same as the prime. Wifi doesn't drain your battery, it's just miss calculated. What drains your battery is the high res screen
Sent from my GT-I9300 using xda premium
josuetenista said:
Same as the prime. Wifi doesn't drain your battery, it's just miss calculated. What drains your battery is the high res screen
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
Is there a way to check if it's miss calculated or if there is something wrong with wifi module? And if it's actually miss calculated, shouldn't Asus repair it to make sure it is calculated correctly?
your argument might have more merit if you did a test with the wifi always on for a period of time vs without it on.
denniegst said:
your argument might have more merit if you did a test with the wifi always on for a period of time vs without it on.
Click to expand...
Click to collapse
I tried to turn off wifi for a couple of minutes, battery stats show wifi consumption 0. After turning wifi on, wifi battery consumption goes very fast to 30 and later to more than 40%.
giedriusc said:
I tried to turn off wifi for a couple of minutes, battery stats show wifi consumption 0. After turning wifi on, wifi battery consumption goes very fast to 30 and later to more than 40%.
Click to expand...
Click to collapse
Since it might be miscalculated that could be wrong. Try watching a movie with another one of similar length without wifi. Afterwards compare battery percentage.
The battery needs a few charge and discharge cycles before you will start to see more meaningful reports. Don't go around and unnerve people by posting about battery life when you cannot possible say anything about that particular issue right now. Let it settle in for a bit. Please.
Monoquark said:
Since it might be miscalculated that could be wrong. Try watching a movie with another one of similar length without wifi. Afterwards compare battery percentage.
Click to expand...
Click to collapse
Good idea, thanks, I'll try that.
MartyHulskemper said:
The battery needs a few charge and discharge cycles before you will start to see more meaningful reports.
Click to expand...
Click to collapse
That's one of the many myths about lithium-ion batteries.
MartyHulskemper said:
Don't go around and unnerve people by posting about battery life when you cannot possible say anything about that particular issue right now. Let it settle in for a bit. Please.
Click to expand...
Click to collapse
No, it's not. Li-Ion batteries have hysteresis as well, and the circuitry needs some start and end points to calibrate itself. I would agree that in some cases, like in my SGS2, specific hardware is used that doesn't need as much info as other pieces do, but generally speaking, you can't expect full potential out of the box.
Posted for reference. You can keep believing in your myth busting capabilities; I do not have the illusion I can convince you otherwise.
MartyHulskemper said:
No, it's not. Li-Ion batteries have hysteresis as well, and the circuitry needs some start and end points to calibrate itself. I would agree that in some cases, like in my SGS2, specific hardware is used that doesn't need as much info as other pieces do, but generally speaking, you can't expect full potential out of the box.
Posted for reference. You can keep believing in your myth busting capabilities; I do not have the illusion I can convince you otherwise.
Click to expand...
Click to collapse
I agree. As an SGS2 owner myself, I know that when a battery is first used, or removed and put back in, it takes the device a few cycles to properly calibrate the battery gauge to have accurate results. I imagine this is the norm across other devices as well.
phonic said:
I agree. As an SGS2 owner myself, I know that when a battery is first used, or removed and put back in, it takes the device a few cycles to properly calibrate the battery gauge to have accurate results. I imagine this is the norm across other devices as well.
Click to expand...
Click to collapse
Never experienced anything like that since Li-ion batteries came into production.
Btw, just did video tests with wifi on and off, there is almost no difference in battery usage (about 15% per hour with brightness about 50% and IPS+ off), so it seems the battery readings are wrong.
Also I found out today, that auto brightness does not work - stays at maximum level if you go into dark room from bright place forever, exactly the same problem someone experiences with earlier Transformer models. Does auto brightness work OK on your Infinity?
giedriusc said:
Never experienced anything like that since Li-ion batteries came into production.
Btw, just did video tests with wifi on and off, there is almost no difference in battery usage (about 15% per hour with brightness about 50% and IPS+ off), so it seems the battery readings are wrong.
Also I found out today, that auto brightness does not work - stays at maximum level if you go into dark room from bright place forever, exactly the same problem someone experiences with earlier Transformer models. Does auto brightness work OK on your Infinity?
Click to expand...
Click to collapse
Auto brightness is buggy here also. Have to control brightness manually....
giedriusc said:
Never experienced anything like that since Li-ion batteries came into production.
Click to expand...
Click to collapse
Well, you can't change the laws of physics.
Btw, just did video tests with wifi on and off, there is almost no difference in battery usage (about 15% per hour with brightness about 50% and IPS+ off), so it seems the battery readings are wrong.
Also I found out today, that auto brightness does not work - stays at maximum level if you go into dark room from bright place forever, exactly the same problem someone experiences with earlier Transformer models. Does auto brightness work OK on your Infinity?
Click to expand...
Click to collapse
My specimen does the same. Brightness doesn't go down when I turn off the light in the room, and it stays at the relatively high level it was at. So that currently makes three of us.
Using auto brightness on mine now. Seems fine. Regarding the battery usage, i have wlan at. 30% usage after alot of downloading.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Apart from the physical characteristics of the batteries discussed above, it is a problem I have encountered in numerous Android devices - the stock battery stats are miscalculated in so many ways, we won't even have enough time to name them all (I remember users panicking about the dialer "draining" the battery in numerous threads, while in most cases it was only the stat issue showing the dialer using most of the battery after making/answering an initial call).
For some different measures, try different apps from Google Play, like Badass battery for example: https://play.google.com/store/apps/details?id=com.gsamlabs.bbm
According to the review from Taiwan, the Infinity could watch youtube movies for almost 7 hours. The brightness was set to max, volume was set to 50%, using wifi to connect to internet.
http://www.mobile01.com/topicdetail.php?f=605&t=2798754&last=36953142
commanlin said:
According to the review from Taiwan, the Infinity could watch youtube movies for almost 7 hours. The brightness was set to max, volume was set to 50%, using wifi to connect to internet.
http://www.mobile01.com/topicdetail.php?f=605&t=2798754&last=36953142
Click to expand...
Click to collapse
http://www.engadget.com/2012/06/25/asus-transformer-pad-infinity-tf700-review/
Engadget said they got about 9:30 out of the thing. 14:43 with the dock attached. That's looping a 720p video with wifi on, and the screen cranked to 50%. I think with normal usage, you can crank out a good amount of time. You just have to find that sweet spot with battery usage. I know I'm still working that out on my Bionic...but I've gotten that to last all day lately.
KilerG said:
http://www.engadget.com/2012/06/25/asus-transformer-pad-infinity-tf700-review/
Engadget said they got about 9:30 out of the thing. 14:43 with the dock attached. That's looping a 720p video with wifi on, and the screen cranked to 50%. I think with normal usage, you can crank out a good amount of time. You just have to find that sweet spot with battery usage. I know I'm still working that out on my Bionic...but I've gotten that to last all day lately.
Click to expand...
Click to collapse
After one week of usage mine lasts about 9 hours while idling with 50% brightness, about 4-6 hours while watching youtube or browsing and about 3 hours while watching videos or gaming at 100% brightness and IPS+ on. Right now battery is at 66% after 1:48 of youtube and browsing with about 35% brightness, Badass Battery estimation - 3:06 left. What is battery life on your Infinity?
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.
Click to expand...
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.
Hi. I'm having a problem. The wifi is draining my battery. My battery will only last about 4 hours of screen on time.
I've already check the power option of disabling wifi when the screen is off. Wifi drains at least 40%of the charge.
I've read other forums but nobody has an answer just yet. I really like this tablet, but it makes me mad just having 4 hours of battery.
Driver problem, an app misbehaving, hardware problem?
What can I do? What should I do? How many of you are having this issue?
mencho said:
Hi. I'm having a problem. The wifi is draining my battery. My battery will only last about 4 hours of screen on time.
I've already check the power option of disabling wifi when the screen is off. Wifi drains at least 40%of the charge.
I've read other forums but nobody has an answer just yet. I really like this tablet, but it makes me mad just having 4 hours of battery.
Driver problem, an app misbehaving, hardware problem?
What can I do? What should I do? How many of you are having this issue?
Click to expand...
Click to collapse
Depending on your usage, it is indeed possible to drain battery 3-4 hours. I myself never had that situation but for those who played highly CPU/GPU intensive game along with WIFI had that issue. I usually had 5-6 hours on my routine use which to me seems was not much.
So couple things I believe you should look into.
1. How is your monitor brightness?
2. What applications are you running? e.g. are you downloading on background with playing some game foreground?
Those sort of basic things. To identify whether the WIFI is actual issue or not, one thing you can do is simply turn off the WIFI and do whatever you need for couple hours and see where you at in your battery. If you have 50% drained in couple hours without WIFI on, clearly WIFI is not the issue but if you suddenly get only 20% battery drain from WIFI off, it is indeed the WIFI.
If WIFI is indeed the issue and perhaps you can try Juice Defender but it will only save battery if you are not using WIFI all the time.
For detail, please refer to http://forum.xda-developers.com/showthread.php?t=1805636.
One last thing is obvious, but battery save mode rather than balance mode gave me extra couple hours without sacrifice in my foreground application performance; however, I did notice main screen page swiping or application launch animation weren't as smooth. Almost felt like back to my old Galaxy 10.1 tablet on Honeycomb.
There is actually a bug that makes your battery overview show the percentage of wifi on time as percentage of wifi battery consumption:
-> wifi on 80% of time > shows 80% of power consumption from wifi.
How long do you have your device ?
When i first got it I also thought that the battery time was bad but now ( i have had it for about a week) i get battery drain of 10% / hr while surfing and 14-18 %/hr while streaming video over wifi and 0,5-1% / hr while standby with wifi and sync on.
I have the brightness on manual contorl and when i watch video i change the performance to eco setting.
Hi, thank you for your responses..... This is an update of what is going on.
I am already on firmware. 26, but had the problems since fw. 22
Yesterday I did a factory reset to rule out some mysterious app. The battery issue continued under wifi.
Wifi was still draining between 40 and 50% of the battery. Completely drained in about 4 hours of browsing time in balanced mode and about 40% screen brightness.
I just did another test. I played 2 movies with the wifi off. After 4 hours of screen on time the battery fell to 66%. So the tablet have enough battery juice for 12 back to back movies. That's great, I can rule out the battery.
So far I can confirm that the battery is draining extremely fast with wifi and is not a big showing erroneous battery drain.
4 hours of browsing tine is a joke for a tablet...
Any other things you think I can try?
For how long have you had it? No matter what people say, the calibration algorithms for these kinds of batteries still need several cycles of charging and discharging before they can actually read out any battery level accurately. I easily go for far longer than that on my device -- not that that fact helps you out, I know -- but I thought battery life was worse in he beginning as well. I guess it just needs to settle down a bit. Give it a week.
EIDT: Oh, and....eeehmmmmm.... do not believe the standard Android battery tool. Get yer mitts on BetterBatteryStats and get a few cycles on it, check the readouts and then report back in.
Sent from my ASUS Transformer Pad TF700T
Thanks. I've already installed better battery stats.. While Web browsing battery drains up to 30%/h. I know is too soon to get to a conclusion. I will keep you post it.
Hope there is some firmware update that will fix this. This is Asus 5th tablet (transformer, prime, slider, tf300) I don't want a beta product!
Sorry about the whining, I know that you guys are helping me..
Battery life is really bad on this we need the motley kernel and some custom rooms soon !!!
I am running this tablet on performance and it is still very slow ccompared to my prime I hoped I can wait for the custom rooms and kernels before I sell this tablet i know i am very impatient
i have a tf700 too and have the same problem on wifi I love this tablet, i think we need to find a fix. Hope to hear from some of the smart people on this forum.
The reason for the low battery is this; Asus did not put a larger battery in Infinity compared to Prime.
Both devices have the exact same battery, but since Infinity runs at a higher clock speed and has a higher resolution screen, it drains the battery much much faster.
You can't really fix this with software. You can however lower the voltage with a custom kernel, making slightly improvement....but that'll also make the device unstable.
Just to let you guys know, i have assigned a fixed ip address for my Tf700 and the wifi drain seems to have decreased. I won't rely on the native android battery monitor (mine still says 85% battery drain by wifi). But i have noticed much less actually drain/hour when using wifi with a fixed ip address than not. YMMV.
My new TF700 battery drain seems huge when suspended. I fully charged the battery for a test. It showed 100%. I then hit the power button to suspend. 6 hours later I check and it is already down 13% At this rate it will loose 50% in 24 hours just sitting suspended. Is this normal? I'm new to tablets and Android. But a friend of mine has a Samsung and his battery hardly drops at all when suspended. Thanks for your input.
Noticed this also. It started after the update with the .26 firmware...
Sent from my ASUS Transformer Pad TF700T using xda premium
We obviously need more info to say something sensible about this, since your install is not the same as mine (apps and services running in the background, etc.). Install BetterBatteryStats and analyze what's going on, then report back in.
Furthermore, 2% battery drain per hour doesn't seem that extraordinary to me, but then I might be wrong. My SGS2 drains 2% per hour on stock ROM/kernel, and my wife's LG Optimus 2x in the same conditions pulls 4%/hour. Granted, I do 0.25%/hour currently (on a custom ROM), and hers is running CM7 ('nuff said, since that just goes on and on and on and on... ), so it definitely could be better, but running stock, I'm not that surprised. Have you got syncing disabled? WiFi running? Exchange in the background?
Sent from my ASUS Transformer Pad TF700T
I just checked mine after 15 hours asleep on the couch, and it was down to 93%. That's similar to the TF201 and TF101 I had before, though it may be a little better. As otherwise mentioned, the drain also depends on what you have installed and running.
If you're using a live wallpaper, turn it off. Those are a huge battery drain (for no significant gain, in my opinion).
Then check all of your widgets to see how often they are updating, I suspect some of them are pulling more often than they should.