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Ok I've had my desire now for couple if weeks. I've read many many posts regarding battery issues so please bear with me.
I've come from iPhone 3gs and estimate my battery is seeing 25 percent less capability.
There are it appears many settings for internet connection. (Always enabled, auto sync, background sync, connect to internet, then individual settings for certain apps when they wanna sync. And then WiFi settings. What I'm after is to kill the internet completely when my phone is not in use, (this is regretable but have to save battery).
What I want is to kill the internet completely when the phone is not in use. No background, no sending hunting for signal etc. Then in one click I wanna connect. AND have the apps sync that I want synced. And have full internet etc. Then in ONE click shut internet off compleley. Is the best way to do this, by setting up your auto sync and background to be always on. Background always on, everything always on or connected, then hold the power button to wake the phone but hold it till you get menu and then select connect to internet from one of the options. Then when I pit the phone down, hold power key, then select disconnect from internet. Will this work and kill my internet connection 100 percent? And get everything synchronized when I turn it on?
Not interested in juice defender, read some bad stories (aswell as good)
Thanks.
Long press the power button, click 'Mobile network' to toggle it on or off.
I use this settings when in work as I have a very poor 3G/H signal in my office, other wise the 3G/H singal drops and connects like a yo-yo all day long draining my battery like crazy! I turn it back on when I'm leaving work. This way I still get calls/texts while in work and I'm sitting at my computer for my internet.
JuiceDefender (even the free version) is working wonders for my battery life. The basic version forces your mobile Internet connectivity to only turn on for 1 minute for every 15...amazing what difference this makes.
I've been using it for the last three days or so in basic mode, and my multiplier is already over x2.
The only downsides I've found are that the 3G/HSDPA is a little slow at "waking up" if I want to use it if JuiceDefender has previously turned it off...I have to have the screen turned on for about 20 secs before a connection initiates - it's a relatively small price to pay, however.
As a rule, I have auto-syncing turned off during office hours since I'm in front of my PC at these times, so don't need to have GMail, NewsRob, Weather, Facebook, Twitter etc. updating on the phone. I turn syncing back on just before I leave the office - and there is plenty of stuff then synced up ready for me to look at whilst on the train home. I leave syncing on for the rest of the night whilst I have WiFi on the phone - and this seems to draw *far* less battery than when 3G/HSDPA is constantly on.
With this routine, I'm easily getting 24 hours out of the phone now...
The real battery killer is when you're using Internet-enabled services in a patchy area. The battery drains away extremely rapidly I've found. In can easily lose up to 40% whilst on the train home (which takes no more than 1hr 20mins) whilst I'm trying to use the Internet etc. as it is constantly cycling between cells moving between G-3G-HSDPA...
rodhull said:
JuiceDefender (even the free version) is working wonders for my battery life. The basic version forces your mobile Internet connectivity to only turn on for 1 minute for every 15...amazing what difference this makes.
Click to expand...
Click to collapse
I'll agree with everything rodhull says, especially the lag after switching the screen on. But I know the developer is working hard to resolve this and other issues. JD looks like it will very shortly be an excellent solution to this, which is really an HTC problem - they should have provided a better battery!
I got my Desire a week ago and the first two days it drained in no time.
Today i have used the phone for playing, surfing, talking, mail, used wifi and gps . and I still have 48% left on the Battery.
Time since last charge is 16 hours and 4 minutes.
I am not doing anything special to preserve the battery
TheOriginalKi said:
Long press the power button, click 'Mobile network' to toggle it on or off.
I use this settings when in work as I have a very poor 3G/H signal in my office, other wise the 3G/H singal drops and connects like a yo-yo all day long draining my battery like crazy! I turn it back on when I'm leaving work. This way I still get calls/texts while in work and I'm sitting at my computer for my internet.
Click to expand...
Click to collapse
Me too, when at home my battery uses about 1-2% per hour with everything syncing and stuff. When at work, it's 6-8% per hour and it's switching between 3G and 2g the entire day. This seems to have a very big influence on battery life.
Hi All.. Just visiting from the X10 pages.. we're having similar battery issues over there too... suspect that these "super smartphones" are really battery killers... A lot of people on the X10 seem to be getting much better battery life now - I got c.40 hours out of mine earlier this week - with wifi usage - no BT and no GPS... There seems to be a few useful things you can try.. first of all - most people have now ditched Juice Defender.. concluding that it doesn't actually help at all.. if anything I reckon it was using more juice..
Wifi sleep policy - set one.. !
Switch data services off when you don't need them (when asleep etc).
Specifying just 2G/ GPRS when in a weak 3G area..
install task manager or ATK to kill apps that run in the background.. sucking up juice!
Hope this helps some!
I've bought Desire 4 days ago.
I've been running in some battery problems a lot. I've heard that battery should have 4-5 full draining and charging before having its max capacity, but I have a life span of about 16-20 hours of battery with Wi-Fi on.
How i found out that: Yesterday I went to the country and messed around with my gps and navigation (never used one, so felt like a little child with a brand new shiny toy). So the battery went dead and i charged it almost full. When i got home i turned the wifi on. Didn't manage to connect to my home network, due to Android still not supporting Ad-Hoc networks (sharing through my notebook) so i didn't bother more and used my data plan, but forgot to turn off the wifi.
In about 2 hours, the battery was nearly 60% from 90. When i went to see what's draining the battery I saw it was the Wifi. I turned it off and since last night, up to now (about 14 hours) the battery is 50% (only 10 percent for 14 hours).
Is there any way to make the phone not scan so agressively for Wifi when it's on ? I'm comming from iphone and it didn't matter too much if i had my wifi on or off there.
First of all, what you're experiencing is normal.
In fact, dropping only 30% with 2 straight hrs of heavy use is actually quite impressive.
If you don't want your device to scan for wifi, turn it off. Simple as that. Keep the WiFi setting widget on one of your homescreens for easy access.
It wasn't heavy use I killed all apps and left it there. 30% are just from WiFi scanning.
I know I must turn off wifi, i have the widgy button, but sometimes i just forget i have to shut it down. (Though that's a bit killing, since i didn't have to do this on my iPhone. Actually this is the only shortcoming i can think of now, great phone. Seems i have to get used to killing extra stuff )
Sadly i couldn't find an option to tell it to scan on rarer occasion, just to help absent-minded people like me.
Try downloading "Y5 - Battery Saver" from the Market.
It automatically switches WiFi on and off depending on your location (as determined by cell location, not GPS).
It allows you to leave WiFi in locations where you know you have WiFi, and automatically switches it off when you leave those locations.
I've installed it, but not exhaustively tested as yet as I've not really been out of WiFi coverage since I installed it.
Regards,
Dave
Try getting the WiFi On/Off widget from the market.
It lets you turn off the WiFi with one touch. Will save you a lot of battery when not using it.
@Gana1991 - i've already noted that i have the widget (no need to download from market)
@foxmeister - thanks, i will try that. (I have been secretly thinking about some app with this function )
indeed, there is a WIFI widget builtin.
If you really want another widget, check the WiFi Toggle by "JQ Soft", nice design.
The Y5-Battery Saver is nice....it seems to work properly.
But i am affraid it was causing some problems here, so i uninstalled.
I will reinstall and do some more tests.
WI-FI usage is actually much better than using the network which drains the battery more.
But deffo only have on when using, not all the time.
Or you'd use the standard HTC energy widged or the android wifi switch wich can be found @ widged -> settings -> wifi
Put the HTC battery widget on the screen, not only does it show what % you have left but selecting the widget pops up a small menu where you can adjust display, turn on /off WiFi, GPS and Bluetooth, vey handy indeed
I leave my WiFi on all the time at home because of the data constantly changing between G/3G it drains the battery amazingly fast. leaving WiFi on helps me save battery and keep a data connection. I took my phone off charge at 9 this morning, WiFi has been enabled all day and I have 80% battery.
once the battery has had a week or 2 of charging it will run loads better. also charging with the phone switched off gets you a bit more juice because of a firmware problem.
Software Guru said:
Put the HTC battery widget on the screen, not only does it show what % you have left but selecting the widget pops up a small menu where you can adjust display, turn on /off WiFi, GPS and Bluetooth, vey handy indeed
Click to expand...
Click to collapse
Where is this battery widget? I cant find it anywhere.
Oops, didnt know i had to look for it on the market. Found it.
Go settings, wifi, menu button and this brings up advanced settings. From there you can disable wifi after 15 mins of inactivity. When the phone wakes wifi kicks in. I have data turned off, wifi turned off, but if I forget to turn wifi off after using it, it's not too bad as it will be deactivated.
What's that widget called? All I can find is the power widget.
Ok found it
Only seems to be a meter though, no adjustments?
Go settings, wifi, then WiFi settings, then press the menu button,. From their you can select advanced WiFi settings.
When i got home i turned the wifi on. Didn't manage to connect to my home network, due to Android still not supporting Ad-Hoc networks (sharing through my notebook) so i didn't bother more and used my data plan, but forgot to turn off the wifi.
Click to expand...
Click to collapse
If you were using your data plan then your wifi wouldn't be on as the phone turns it off when your connected via 3G, it only uses one or the other not both at the same time.
That's the way it is on my Desire.
I've not used WiFi at all today yet apparently its consumed 25% of my battery. I've got it switched off via widget and its also set to disable after 15 minutes of inactivity.
Any thoughts?
thanks for any help
It's just occurred to me that perhaps the percentages run and run and are not reset after a charge?
Anyone know how it works?
I have a widget that shows me how much I have left and when I unplug it after a full charge, I have 6 hours left.
Ridiculous.
This is on auto brightness, wifi, twitter/facebook/mail updating every 15 minutes.
whenever I take my phone out the house I have to bring a charger...
bloody ridiculous.
couple of points.
1) When you leave the house, don't leave your wi-fi on! I find wi-fi to be the biggest battery drain out of everything ( expect gps)
2) I use a brightness widget, therefore when your in doors you can have it on low, then when your out doors have it on high, i assume this will use less battery then auto brightness
3) why do you need facebook updating every 15 minutes?? Do you honestly look at your phone that much when your out? change the settings so it updates every 15 when your on wi-fi at home, and every hour for when your not.
Wifi isn't an issue. I leave it on 24/7 as well as bluetooth and still can get 36 hours out od a charge. Its hooked up to wifi 20hrs a day as well.
Phil750123 said:
2) I use a brightness widget, therefore when your in doors you can have it on low, then when your out doors have it on high, i assume this will use less battery then auto brightness
3) why do you need facebook updating every 15 minutes?? Do you honestly look at your phone that much when your out? change the settings so it updates every 15 when your on wi-fi at home, and every hour for when your not.
Click to expand...
Click to collapse
thanks!
1) whats the name of this widget? sounds good
2) is there a setting for that? cant find it
I have a widget that shows me how much I have left and when I unplug it after a full charge, I have 6 hours left.
Ridiculous.
This is on auto brightness, wifi, twitter/facebook/mail updating every 15 minutes.
whenever I take my phone out the house I have to bring a charger...
bloody ridiculous.
Click to expand...
Click to collapse
1. Battery and other constantly updating widgets are one of the causes for battery drain. Get rid of it.
2. Battery widgets try to get an estimate of your typical use. They are mostly wrong in my opinion
3. I can get 6 hours of battery, yes, but only if glue the phone to my hand and use it constantly for that time
4. there are tons of battery threads around, use those suggestions (mid brightness, no live wallpaper, turn airplane on when you know coverage will be unavailable for long, etc)
5. Battery gets better in 10 days.
6. Most people can get at the very least one day of heavy usage. If you really need to hammer the battery get a spare one, they are cheap. Oh, and realize you are lucky because you CAN have a spare battery !
7. If you are using an automatic task killer, get rid of it.
callummc said:
thanks!
1) whats the name of this widget? sounds good
2) is there a setting for that? cant find it
Click to expand...
Click to collapse
1) go to the market and search brightness level, or brightness widget, there are a number of these. The best i find is brightness level by curvefish, it lets you pick a percentage and keep at that .
2) Cant remeber actually where the settings are but there is a way. But i prefer to use another widget, autosync on/off, this allows you to update every 15 when on wi-fi, but when you want to save battery, turn auto sync off and it doesnt sync ,
I suggest you use switchpro widget. its like the power control widget but with more options to turn on/off things.
I typically charged my Nokia N97 every other day or so, even though I used it frequently, and needless to say the HTC Desire doesn't have the same stamina. I was quite frustrated by it, and I started thinking of ways to save power. I came up with 19 tips, and I have actually noticed quite a difference by following them
19 Tips to Keep the HTC Desire Running a Little Longer
Nice post thanks.ill give this a go. But I have a question to do with the positioning using data or gps. I believe your stating that you should turn data off for this purpose, and let the gps do it? however my phone was set to opposite. when I changed as you were suggesting and I clicked allow gps, I had a message come up saying to turn off to conserve battery? But your saying to turn on? And have data off? Also how do you get into htc facebook settings,i cant even find it!
dingdong3000 said:
I suggest you use switchpro widget. its like the power control widget but with more options to turn on/off things.
Click to expand...
Click to collapse
yep i also use this widget
also use a free juice defender or paid ultimate juice that keeps turning on and off your 3g every now and then depending on how you schedule it, my phone with snowstorm weather widget updating every 80 minutes + 30s of 3g every 5 minutes to update mail etc and average usage lasts about 36 hours which is good enough for me
I leave my WI-FI on at home and suffer hardly any drain.
At work like today leave my Mobile network on down to 47% with just twitter usage!
Pathetic is the mobile signals drain.
MapleDouglas said:
I typically charged my Nokia N97 every other day or so, even though I used it frequently, and needless to say the HTC Desire doesn't have the same stamina. I was quite frustrated by it, and I started thinking of ways to save power. I came up with 19 tips, and I have actually noticed quite a difference by following them
19 Tips to Keep the HTC Desire Running a Little Longer
Click to expand...
Click to collapse
Ok, ive had another read of this and am now just even more confused! Are you saying to have gps turned off via settings and location aswell as data, or just having gps on? Are you saying that having gps selected via settings for the purpose of locating services uses les batty than via using data? Either way, it appeatss that the power control widget controls the gps the same as via settings. Right now ive deselected gps and the data location.
Dunbad said:
Ok, ive had another read of this and am now just even more confused! Are you saying to have gps turned off via settings and location aswell as data, or just having gps on? Are you saying that having gps selected via settings for the purpose of locating services uses les batty than via using data? Either way, it appeatss that the power control widget controls the gps the same as via settings. Right now ive deselected gps and the data location.
Click to expand...
Click to collapse
I believe this is what I'm saying:
"To let your device learn your location via wireless network triangulation requires less battery than by using the GPS for this purpose. However, using both methods simultaneously is probably not a good idea from a battery point of view. The GPS can handle this task by itself, although it will get a fix on your location a little bit slower. Also, wireless network positioning will be used to collect anonymous Google location data, which will drain the battery further. You can change this option from Settings > Location > Use wireless networks. "
In other words, to only use wireless network positioning will supposedly use less battery than by only using the GPS, but using both methods will naturally use the most juice
For me...
- Turn GPS On when I needed.
- Turn WiFi On when I needed
- Turn Bluetooth On when I needed
- Use 2G Network for standard internet, we use 3G if we want more speed such us watch video
jauhari said:
For me...
- Turn GPS On when I needed.
- Turn WiFi On when I needed
- Turn Bluetooth On when I needed
- Use 2G Network for standard internet, we use 3G if we want more speed such us watch video
Click to expand...
Click to collapse
I can get get good days heavy usage (except games) from mine, I haven't tried the 2G thing yet.
Apparently it is the connectivity thing that kills the battery, but turning off 3G, doesn't that take all the fun out of it???
If you just use it as a phone then I reckon you can get a couple of days out of it, or so I've read...
I have a rooted G2/Desire Z. What are some ways that I could save battery? It seems it takes only a few hours for it to reach 50%. Granted the phone is now >2 years old and the battery is probably aging. I've done all the basics such as screen brightness set to auto, dim after 30 seconds, etc. etc. etc. What more could I do?
Alternatively, are there any apps that can control the phone/cpu to work a certain way to save battery life?
Thanks
valeous said:
I have a rooted G2/Desire Z. What are some ways that I could save battery? It seems it takes only a few hours for it to reach 50%. Granted the phone is now >2 years old and the battery is probably aging. I've done all the basics such as screen brightness set to auto, dim after 30 seconds, etc. etc. etc. What more could I do?
Alternatively, are there any apps that can control the phone/cpu to work a certain way to save battery life?
Thanks
Click to expand...
Click to collapse
Setcpu,set screen off profile to lower clock..freeze some bloatware up..and also try v6 supercharger
Sent from my HTC Desire Z using xda app-developers app
Easiest way:
Uninstall fabebook app, flash a sense rom where you can access most fb functions without the app.
For real, my battery life went from about 10% an hour to 4% an hour on average.
Sent from my HTC Vision using xda app-developers app
Honestly, way number 1 is to get a new battery. Old batteries just start to drain much faster as they get older. Pick up an Evo Design 4G stock battery for a nice boost.
2. Turn brightness off auto and put it as low as you can handle. Keep a brightness slider on your notification bar for those situations you need to turn it up quickly.
3.Turn everything that "syncs" off of push and set it for 1hour+ intervals if possible.
I have had great standby time using the OC daemon that is packaged with the mimicry ROM as well.
There is this trick that helps. On a monthly bases drain the battery and re-charge with the phone on ie also a good Rom an a good radio version like .19 will keep your battery good don't use lots of ram manager apps and bettery saver apps the run backgroung processes that drain your battery fast
HIT THANKS IF I HELPED
Sent from my HTC Desire Z using xda premium
With 2 year-old battery there are only 2 options:
1. Replace the battery
2. Buy a new phone
mruwek said:
With 2 year-old battery there are only 2 options:
1. Replace the battery
2. Buy a new phone
Click to expand...
Click to collapse
^This (regards to #1), and working batteries are rather cheap, the fat one I got (3500mAh) was 9$, but you can easily get a stock replacement of the 1300-1500 range to fit with the default battery cover.
Far as tips, rooted or not:
1) Screen to automatic, or avoid 'full brightness'. Your screen consumes the most of your battery, automatic or lower brightness can improve the life significantly. This is the big one as your screen will typically be 80-90% of your battery life.
2) If you are near wifi often, System Setting -> Wifi -> Advanced (via menu) -> Sleep profile to always on. This will set it so that the wifi connectivity is always on even with the screen off. A connected good wifi connection uses far less battery than your 2G/3G data constantly searching for a good or better data connectivity. Simply turn off wifi completely when not in an area with wifi (or if you're driving around).
3) Avoid unnecessary applications. Don't use twitter? Freeze/Disable the application under manage app or under Titanium Backup (generally it's not good to 'uninstall' an application completely if it came with the rom).
4) SetCPU with profiles is one way to do it, unless your rom comes with a CPU Daemon already (ie: mimicry with virtuous OC Daemon), When setting a "screen off" profile, try not to go below 768mhz for the maximum, as going with 384mhz for example may be too slow for the phone to effectively wake up when a call or notification comes in.
5) You can use an app such as Tasker (not to be confused with task killer). Where you can assign automatic tasks, such as automatically setting Radio to 2G when connected to wifi (some roms like AOKP do this automatically under power control), or other tasks depending on the circumstances.
6) The first time you get a new battery, make sure you leave it on the charger for a good 5-6 hours so that it accurately 'tops off', the phone won't know accurately what's 100% and what's 0% until it has been fully charged (least 6 hours minimum), and fully drained, after which it'll more accurately report your battery % as it's used and will have more accurate usage stats.
7) If you're a T-Mobile subscriber, consider the 26.13.04.19 radio as well as the T-Mobile Wifi calling app, wifi uses less power in the long run than your radio via cell towers. If you'll be in a location that has wifi often you will benefit from this over not using Wifi Calling. (The main downside is you cannot currently send/receive MMS over wifi calling, but Calls and SMS[txt] work fine). Even if you don't use the wifi calling app, the 26.13.04.19 radio provides better battery life over the older one.
---------- Post added at 10:53 AM ---------- Previous post was at 10:48 AM ----------
strip419 said:
There is this trick that helps. On a monthly bases drain the battery and re-charge with the phone on ie also a good Rom an a good radio version like .19 will keep your battery good don't use lots of ram manager apps and bettery saver apps the run backgroung processes that drain your battery fast
HIT THANKS IF I HELPED
Sent from my HTC Desire Z using xda premium
Click to expand...
Click to collapse
Course it helps to clear battery stats before performing this task so that the OS/Battery-Stats records the new maximum and minimum values of the battery. Though you don't need to do it monthly, I would say closer to 6 months would be appropiate if you don't want to make a monthly habit of it.
You mainly only do this on account of battery aging (over time the battery will not hold as much charge as it once did), You normally know if you need to do this task again if it appears to be on 98% or 99% forever never reaching 100%, meaning that the battery is no longer able to hold the juice to provide the former-maximum mV value, re-doing the battery stats simply makes the new maximum marked as 100%.
PS: Strip419, on an off-topic note, I tend not to 'thank' people who ask/beg for it. If your post is worthy of thanks, they'll be clicked on their own accord.
OK MAN I'LL KEEP THAT IN MIND
Sent from my HTC Desire Z using xda premium
Best rom I've ever used for battery life is EliteMod. That rom did something crazy, cause my phone lasted for days before it need charging, and I use facebook and all that good stuff. It's not as fast as other roms, but battery life is certainly the best on that rom.
Also yea, before with stock battery my phone would last a day at best, and now I have a 1800 battery that makes it last for 2 days easy. So if your phone is at least 2 years old, get a new battery. They're dirt cheap on Ebay or Amazon. The phone comes with a 1300 stock.
simply change for normal use 2G instead of 3G.
A couple of questions--I'm using EliteMod CM7
kbeezie said:
2) If you are near wifi often, System Setting -> Wifi -> Advanced (via menu) -> Sleep profile to always on. This will set it so that the wifi connectivity is always on even with the screen off. A connected good wifi connection uses far less battery than your 2G/3G data constantly searching for a good or better data connectivity. Simply turn off wifi completely when not in an area with wifi (or if you're driving around).
Click to expand...
Click to collapse
My Advanced settings don't look quite like yours, alas. (I'm using EliteMod cm7.) The section is entitled "Wi-Fi sleep policy, Specify when to switch from Wi-Fi to mobile data" and the only options are " When screen turns off," "Never when plugged in," and just plain "Never." I assume that the "Never" option, that is, never switch from Wi-Fi to mobile data, is what you mean...that is in any event the default (set by this particular ROM?)
But my problem goes beyond not quite understanding the semantics of "Never" (off?) vs. "Always on." What I continue to find odd is that my highest battery usages, at least according to Battery Monitor Widget, are never the screen at all; rather they are cell standby, Wi-Fi, phone idle and Android System...Display is down at 6% just now, for example (and I've been up for hours, have read the news on the phone, emailed, texted, etc. This is on EliteMod only, btw, I used Flinny's latest build (.94?) for a few days recently, and while battery usage was worse, at least the display was at the top of the list, where it (presumably?) belonged.
I have all the latest and greatest tweaks from the the forums (for cm7 roms, that is) the .19 radio and sd-ext and all ext4 partitions. Am running the generic 3500mah "fat boy" battery...drained and refilled several times, all according to instructions...mine only shows maybe, umm, 2300 or so mah, but that's not the issue for just now...it's why my usage looks so odd, and how to fix it, if need be.
thanks to all,
p-d
oh yeah. I have long used (pre-rooting) Lookout and Pouzerate's Green Power free apps...have now turned them off (well, uninstalled them, in fact) just to see if, indeed, battery helper apps make things worse, running in the background... any thoughts on that topic would be welcome as well.
Moving to Q&A
I am suprised, there still is no battery life thread.
People must be very happy with their battery lifes or nobody is buying this tablet
I do have one big issue with battery life.
WIFI is the biggest battery hog, using 2-3 times more battery than the screen.
For 3 hours WIFI roughly 1400mAh.
So I only manage like 5 hours of SOT.
Btw. I have set WIFI to be disabled, when the screen is off.
Any suggestions?
I haven't had mine off charge long enough to really be able to comment about this yet but I can't complain with it so far.
Mine seems good so far. Had one freeze as you can see. 33% left.
bill3508 said:
Mine seems good so far. Had one freeze as you can see. 33% left.
Click to expand...
Click to collapse
Still, I think it is strange (as seen in your screen shots), that WIFI accounts for almost half of your battery usage. And 5+ hours SOT is only 6%?
Could you be so kind and post the screen for wifi too, so we can see the "computed power use"?
When looking at my phone, wifi is at 52 mAh power use over an 18 hour period, on this tablet it is 2700 mAh for 10 hours.
An alarming discrepancy.
Or am I missing something?
supersquishy said:
Still, I think it is strange (as seen in your screen shots), that WIFI accounts for almost half of your battery usage. And 5+ hours SOT is only 6%?
Could you be so kind and post the screen for wifi too, so we can see the "computed power use"?
When looking at my phone, wifi is at 52 mAh power use over an 18 hour period, on this tablet it is 2700 mAh for 10 hours.
An alarming discrepancy.
Or am I missing something?
Click to expand...
Click to collapse
Here you go. I'm guessing screen is only 6% because the tablet has been up now for 4 days, so 6 hours is a small portion of the activity.
supersquishy said:
I am suprised, there still is no battery life thread.
People must be very happy with their battery lifes or nobody is buying this tablet
I do have one big issue with battery life.
WIFI is the biggest battery hog, using 2-3 times more battery than the screen.
For 3 hours WIFI roughly 1400mAh.
So I only manage like 5 hours of SOT.
Btw. I have set WIFI to be disabled, when the screen is off.
Any suggestions?
Click to expand...
Click to collapse
Doesnt Wifi use more battery when its connecting and reconnecting with it disabled when the screen is off?
ZiggSVO said:
Doesnt Wifi use more battery when its connecting and reconnecting with it disabled when the screen is off?
Click to expand...
Click to collapse
I really don't know. You may be right.
I guess the high wifi in battery stats is a reporting error / miscalculation. I have wiped the cache partition in recovery (to fix my ambient light sensor) and ever since wifi is at the bottom of my battery list.
And I did not get any better SOT, so there could not have been any real battery drain from wifi even when it held the top spot in the stats.
Still disappointed with only 4-5h SOT.
Thanks everybody for helping out.
ZiggSVO said:
Doesnt Wifi use more battery when its connecting and reconnecting with it disabled when the screen is off?
Click to expand...
Click to collapse
No its still going to use far less unless your picking it up every 30 seconds or so.
bill3508 said:
No its still going to use far less unless your picking it up every 30 seconds or so.
Click to expand...
Click to collapse
my understanding of how android has utilized the wifi sleep policy is that its best to leave wifi always on when sleep. It will use more battery to reconnect to the wifi network when it is woken up and disconnect when sleeping.
Any sources to support your theory? I'd like to read up on it more.
Info I've always followed. This is from 2011 as well:
"This tip is one that seems counter-intuitive, but you can save a lot of wear and tear on your Android phone's battery if you tell it to keep the Wifi radio turned on and connected while the phone is sleeping. Your phone needs a lot of juice to keep pinging those cell towers, and even more to transmit data to and from them. Wifi radios use much less power because of their design, and they don't have to keep searching for a better access point. It's the way cellular data communication was designed, and it's a necessary evil.
But what if you're spending all day (or all evening) in one place, connected to Wifi? If you tell your phone to shut off Wifi when idle, it bounces back to cellular data (be it 2G, 3G, or 4G) and starts sucking down the electrons again when the screen shuts off. That's no good, and easy to fix:
Open the advanced Wifi settings by pressing the menu button, then Settings, Wireless & networks, Wi-Fi settings, and tapping the menu button again. You'll have a choice to either Scan, or go Advanced -- go Advanced.
Tap the Wi-Fi sleep policy entry, and you'll get a pop up dialog with the choices you see in the picture above. Choose Never.
Now even when your phone goes into standby mode, you'll stay connected to Wifi and be able to get mail and messages without turning the cell radio back on and trouncing your battery life. And for the times when you're not in an area with a Wifi connection, just shut Wifi off, either through the menu or with a handy toggle widget. Your battery will thank you for it."
ZiggSVO said:
my understanding of how android has utilized the wifi sleep policy is that its best to leave wifi always on when sleep. It will use more battery to reconnect to the wifi network when it is woken up and disconnect when sleeping.
Any sources to support your theory? I'd like to read up on it more.
Info I've always followed. This is from 2011 as well:
"This tip is one that seems counter-intuitive, but you can save a lot of wear and tear on your Android phone's battery if you tell it to keep the Wifi radio turned on and connected while the phone is sleeping. Your phone needs a lot of juice to keep pinging those cell towers, and even more to transmit data to and from them. Wifi radios use much less power because of their design, and they don't have to keep searching for a better access point. It's the way cellular data communication was designed, and it's a necessary evil.
But what if you're spending all day (or all evening) in one place, connected to Wifi? If you tell your phone to shut off Wifi when idle, it bounces back to cellular data (be it 2G, 3G, or 4G) and starts sucking down the electrons again when the screen shuts off. That's no good, and easy to fix:
Open the advanced Wifi settings by pressing the menu button, then Settings, Wireless & networks, Wi-Fi settings, and tapping the menu button again. You'll have a choice to either Scan, or go Advanced -- go Advanced.
Tap the Wi-Fi sleep policy entry, and you'll get a pop up dialog with the choices you see in the picture above. Choose Never.
Now even when your phone goes into standby mode, you'll stay connected to Wifi and be able to get mail and messages without turning the cell radio back on and trouncing your battery life. And for the times when you're not in an area with a Wifi connection, just shut Wifi off, either through the menu or with a handy toggle widget. Your battery will thank you for it."
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I know that leaving WiFi on runs your battery down on any device when its connected and it takes all of 2-3 seconds to connect. No reason to leave it on full time when your not using it. Also, the device is continuously checking and sending small amounts of data to maintain that connection.
Were talking about the pixel here and not a cellular device.
Pretty happy with the C.
I haven't really payed attention to how long this device lasts, I use it pretty casually so it lasts me up to a week. I have used it to stream movies and it has lasted me the whole day (8 hours) watching movies with about 30% left. Compared to other tablets I've had including the nexus 9 this one blows them all away. My old nexus 9 would die after a few episodes (about an hour)
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I streamed a good 6 hours of a live feed on battery and the device used around 50%, can not complain with the battery life at all with this device
bill3508 said:
Pretty happy with the C.
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Click to collapse
Was that with bluetooth (and keyboard) on?
Ves said:
Was that with bluetooth (and keyboard) on?
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Click to collapse
No, just WiFi, don't have a keyboard.
As a heads up, there appears to be a WiFi issue with MM itself. I'm seeing the same issue on my Nexus 7 2013 running a MM ROM, and I found a thread online talking about it...maybe from the Android Central forums or something, I can't remember now. People seem to be unsure as to whether or not WiFi is actually causing a battery drain, or if it's just reporting incorrectly. But at least on my N7, the battery can drop 40-50% in one day while on standby, and when I have WiFi set to Off when it's sleeping. And I used to get DAYS of standby time before going to MM.
Edit: Here's an XDA thread about it: http://forum.xda-developers.com/google-nexus-5/general/guys-call-wifi-battery-drain-6-0-t3219870
I had the same issue with WiFi battery bug on the nexus 5. Fixed it via router by turning off the auto disconnect (the option where router decides if a device can connect based on signal strength) on both 2ghz and 5ghz. After this the Wifi went back down to the bottom of the battery list. Long shot, and most likely not even related, but hope it helps anyone.
On a Asus rt router.