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Hi,
I've been noticing that my Hero has been gulping battery down VERY fast.
In general, the battery lasts 7-8 hrs, which is not acceptable (I'm out for 12+ hrs).
My usage is not heavy. Wifi, Bluetooth and GPS are rarely, if ever, on.
I do read some news and surf the web a little but only for 2-3 of those 7-8 hrs.
Is my battery life normal?
I've been reading people achieving 12+ hours with their stock battery...
2 or 3 hours websurfing is very heavy on the battery, much more so than phone calls. One of the biggest drains is the screen and you having it on for 2 - 3 hours is going to drain the battery I guess
Seems very poor, much poorer than my iDevice that I use more frequently.
Today, after flashing the 2.1 ROM, it has gotten worse.
Battery's down to 40% in 6 hours, and Battery Usage shows 50% phone idle, 50% cell standby.
I've not even touched the phone since unplugging it 6 hours ago ;S
Is it possible I've a defective battery?
If your battery is down to 40% after 6 hours of it being idle (no screen but switched on) then either you have some power hungry app(s) running in the background or the battery is defective.
At the moment my battery is showing 40%. It was last charged about 40 hours ago, and I have had it switched on the whole time with some light use, picking up emails in the background and occassionally switching the screen on.
I ran task killer and sync was off.
One thing I didn't do was charge it for 10-13 hours straight on first charge; I just unplugged it when the led turned green in ~4 hours (impatient...).
Could this have affected battery life?
Nope - when the LED is green it is fully charged. No minimum charge times suggested in the manual.
peterc10 said:
At the moment my battery is showing 40%. It was last charged about 40 hours ago, and I have had it switched on the whole time with some light use, picking up emails in the background and occassionally switching the screen on.
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That is amazing battery life, I never get more than 24 hours with similar use... what ROM and radio are you using Peter? Also, where are you and what network are you on?
I am in UK on Orange, and have standard Orange ROM and Radio - not the latest one but the one they had before 2.73.61.5.
I have read lots of complaints about battery life, but I think mine is fine for a smartphone. I am a relatively light user of a phone - don't do lots of surfing or watching videos. A few phone calls, very few texts, checking emails and listening to some music is all I normally do with it. The other thing I do use it for is I always have the sat nav on while I am driving, but in that case it is plugged into my Brodit mount and charging from the car.
This latest spell may have been helped because I have not been out over those 40 hours - spent the weekend at home, which means that the Hero has been logged into wifi rather than trying to use mobile data. And not used it to make calls or texts or used the music player.
I notice keep Internet connection active take a lot of battery. Go to settings and turn it off and try to see whether the problem exist. It'll will take you a few seconds to re-establish the connecting whenever you need it... not so unbearable considering it'll save a lot of battery.
Same, I notice the mobile chip is using abnormal amounts of battery.
In the morning I watched a 40 minute episode of drama.
Battery dove from 100% to 65%.
To preserve battery life, I turned Airplane mode on.
When I was done with the episode, there was still 55% battery left!
I'm pretty shocked at the battery drain.
I'm using one of the new 2.1 ROMs. They're known for having a bit of a battery-hunger. I solved it by installing the app Ultimatejuice from Market. it's a pay app, but it's worth it. It's also another app called juicedefender (free, less options) that I used before I bought the Ultimate. It also worked good! Now my battery lasts the whole day without any problem
Hi, all. Purchased my Vibrant back in July and always had some battery issues. I figured I'd try one last thing before asking T-Mobile for a battery replacement, so here's what I did. Can someone tell me whether or not this seems normal?
Two days ago, I ODIN'd to JFD to start completely from scratch, then flashed Bionix-V 1.3 non-TouchWiz edition (wiping in the process). The flash was on a completely full battery (plugged into AC, unplugging for the first time after booting into Android).
Here are my usage stats for today:
WiFi off, GPS off, Bluetooth off, auto-rotation off, 3G enabled, brightness around 25%, power saving mode enabled
Gmail/Contacts/Calendar - push, Exchange email - every 15 minutes
Google Talk logged in the whole time
No other syncing applications
Usage consisted mainly of web browsing and around an hour of listening to music through PowerAMP
Charged to 100% overnight
Unplugged for 5 hours, 30 minutes (8:30am to 2pm)
Battery stats: Display 97% (display on 1h 35m), cell standby 3%
Final battery at the end of period: 30%
So, does anyone else get similar battery life on a nearly untouched installation of Bionix? A 70% battery loss with only 1 hour and 30 minutes of screen time seems a little high to me.
That seems like a lot. Try downloading an app called battery left from the market. Charge up to 100 percent and let the app calibrate. It will show you how long a full charge should last. With moderate use I get about 15 to 20 hrs of life with bionix.
Exchange Sync? With what app? I've heard that touchdown is a really bad drain on battery and refreshing every 15 minutes might be a problem. Poweramp for an hour probably cost you 20% battery as well. I'd give a few more cycles to judge your battery life. Compared to my phone, been off the phone since about 8 AM, 20% battery now around midnight. This included 30 minutes of music with the TW player, about 3 hours of display time, a few photos, and about 5 minutes of phone calls, 15-20 text messages. Also some web browsing on 3G and wifi.
Sdobron said:
Exchange Sync? With what app? I've heard that touchdown is a really bad drain on battery and refreshing every 15 minutes might be a problem. Poweramp for an hour probably cost you 20% battery as well. I'd give a few more cycles to judge your battery life. Compared to my phone, been off the phone since about 8 AM, 20% battery now around midnight. This included 30 minutes of music with the TW player, about 3 hours of display time, a few photos, and about 5 minutes of phone calls, 15-20 text messages. Also some web browsing on 3G and wifi.
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Just the Samsung Email app. And I don't think 15 minute polling for new email could cause that much drain... that's something I only enabled recently. This is after a few full battery cycles.
I've also never observed PowerAMP using much more battery than the stock music player.
Sounds like your phone is getting much better battery life.
Sdobron said:
Exchange Sync? With what app? I've heard that touchdown is a really bad drain on battery and refreshing every 15 minutes might be a problem. Poweramp for an hour probably cost you 20% battery as well. I'd give a few more cycles to judge your battery life. Compared to my phone, been off the phone since about 8 AM, 20% battery now around midnight. This included 30 minutes of music with the TW player, about 3 hours of display time, a few photos, and about 5 minutes of phone calls, 15-20 text messages. Also some web browsing on 3G and wifi.
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An hour of PowerAMP drains about 3-4% with flipping through songs, and I have been using this app for several weeks.
Check out system panel also, see what apps you have running in the background.
Sdobron said:
Check out system panel also, see what apps you have running in the background.
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As I mentioned, this is a fresh installation of Bionix-V 1.3-- I haven't added on any apps that could possibly be responsible for the battery drain. I've used System Panel in the past to evaluate battery issues with little success.
I've had bionix-v 1.3 for about 3 days now.
This afternoon i pulled it off the charger at 90%. Now, 7 hours later, i'm at 69% with:
display: 79%
cell standby: 16%
phone idle: 4%
Today was pretty light use though. Just about 20 texts, 30 min. of web browsing, 5 min. on phone calls. I also put my display brightness down all the way and freeze a few apps using TiB.
Normally though, i make it through the entire day (18 hours) with one charge and what i consider to be 'average' or medium usage.
Let's collect some statistics regarding battery discharge rate when tablet suppose to be asleep, like overnight.
I'll start:
ROM - TnT lite 4.2, WiFi On, BT Off, in 10 hours 14% charge drop - 1.4% per hour.
with WiFi Off - around 1% per hour.
I was killing all apps on background before going asleep but this does not affect discharge rate too much, maybe 0.2% and as well might be just measuring error.
What is your tablet's discharge rate?
vegan 5.1.1 clean install, no additional kernel/OC tweaks
lost 30% over 6.5hr of sleep. battery usage shows very little idle time and alot of "android system". i wonder if that means something stayed awake and kept the tab from sleeping or what. o, and wifi was on and awake the whole time too
anyway to put this thing to sleep and last a few days like my HTC mytouch3g when i put it into airplane mode? that phone would drop to the lowest clock speed and sleep with very little battery drain
atb1183 said:
vegan 5.1.1 clean install, no additional kernel/OC tweaks
lost 30% over 6.5hr of sleep. battery usage shows very little idle time and alot of "android system". i wonder if that means something stayed awake and kept the tab from sleeping or what. o, and wifi was on and awake the whole time too
anyway to put this thing to sleep and last a few days like my HTC mytouch3g when i put it into airplane mode? that phone would drop to the lowest clock speed and sleep with very little battery drain
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Why not just power it all the way off? Deep sleep is essentially Off anyway, minus the bootup time.
Cold start is about 50 seconds. When starting from standby - almost instant.
It would be nice if our GTablet can go into standby and don't lose charge with that rate.
Vlad_z said:
Cold start is about 50 seconds. When starting from standby - almost instant.
It would be nice if our GTablet can go into standby and don't lose charge with that rate.
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Nice, but impossible. Just plug it in overnight. If you want it "always on" you can expect about 16 hours of standby with 4-6 hours of use mixed in. I'm so used to daily charging it doesn't even bother me anymore. Just really happy this thing goes all day on wifi without deep sleep... good enough.
Well, I am inclined to think that this is a software problem (Android OS). Xoom with HC does ok when in sleep mode. Someone say 3%-4% overnight.
Vlad_z said:
Well, I am inclined to think that this is a software problem (Android OS). Xoom with HC does ok when in sleep mode. Someone say 3%-4% overnight.
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Only way it would do that is deep sleep. As in, nearly off - everything powered down except ram, CPU halted.
That's essentially the same as putting your laptop to sleep, vs power down.
The GTab's deep sleep sucks. Not sure what's wrong with it, but it's below the level of android. So it could be a firmware issue. I'm happy with the 2-3% per hour drain when "on" but screen off, connected to wifi, able to generate alerts and alarms.
So, my interest was piqued
I use pershoot's UV/OC kernel, keep wifi on all the time, and use softlocker to make sure my gtab *never* deep sleeps. This is on Vegantab-ginger.
I installed batterymonitor widget, and am collecting data.
First interesting tidbit, my "screen off, but wifi on/not really asleep" power drain is 125mA
Given the 3650mAH rating of the battery, that gives me 29.2 hours total standby time in this state.
Working backwards, that's a drain of just under 3% per hour.
You're actually seeing MUCH WORSE than that, at 4.6% per hour (30% over 6.5 hours) so I agree with you, your software is doing something very bad. You can get nearly 50% better battery life by using gingerbread, pershoot's kernel, and keeping it from going into deep sleep
my tablet lose near 10 %
n21klin said:
my tablet lose near 10 %
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Any more details? Number of hours on standby? ROM version? Was it deep sleeping (wifi off, clock/time not updated until a few seconds after power on?)
Assuming 8 hours or so sleeping, this is much closer to the expected 1.125%/hour discharge rate for "deep" sleep, or about 90 hours total on deep sleep standby.
schettj said:
Any more details? Number of hours on standby? ROM version? Was it deep sleeping (wifi off, clock/time not updated until a few seconds after power on?)
Assuming 8 hours or so sleeping, this is much closer to the expected 1.125%/hour discharge rate for "deep" sleep, or about 90 hours total on deep sleep standby.
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if that was indeed true (that you manage to get your tab to sleep for 8 hrs and only losing 10%) then i want whatever you got. I want my tab to be able to sleep for 3-4 days, even if it mean having to settle for JUST 1.0 Ghz
The lowest I've seen so far in batterymonitor widget is ~108ma draw (screen off, 214mhz clock, wifi off)... if the thing goes into "deep sleep" then batterymonitor (and everything else) stops dead, since the cpu is halted - you'd need to poke it inside to see what the load is when deep sleeping.
108mA gets you to 33 hours. To get to 72 hours you need to get the load down to about 50mA. That's the budget to keep the ram chips powered, and the on/off buttons
Battery drain with ext3 partition and S2E?
Is there a perfect way to check what's draining your battery? Recently I've been noticing that my battery consumes almost 20% of charge during night, whereas it used to only eat about 5% in my previous installation of CM7.
First install of CM 7.0.3 - Good battery life, night drain is only about 5-8%.
Second install of CM 7.0.3 - Worse battery life, night drain is about 25%.
The main difference in the second install in that I have made an ext3 partition in the sd card and I am using S2E and have moved some apps to the sd card. Will this consume more battery?
Had a look at the battery history in spare parts, and I see that the partial wake usage by Maps and K9 mail topped the list. Uninstalled both to see it they were the issue. I have Juice defender plus where I have configured data off hours from 12:30 am to 6 am. Still it drinks battery. Any thoughts?
So I have narrowed down why my battery dies even when I'm not using my phone...for some reason when I look at the stats under battery usage, the battery seems to be awake almost 60 to 70 percent of the time, EVEN when I'm not using the phone...my battery lasted a total of 15 hours...I made a 20 minute phone call and screen usage was 25 minutes on lowest settings....4g was on wifi was on...automatic background data was off...gps on....everything else was off....why is the phone waking when it is not being used???? any way to find out?
seansk said:
So I have narrowed down why my battery dies even when I'm not using my phone...for some reason when I look at the stats under battery usage, the battery seems to be awake almost 60 to 70 percent of the time, EVEN when I'm not using the phone...my battery lasted a total of 15 hours...I made a 20 minute phone call and screen usage was 25 minutes on lowest settings....4g was on wifi was on...automatic background data was off...gps on....everything else was off....why is the phone waking when it is not being used???? any way to find out?
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Have you tried restarting your phone and then tracking the battery usage?
Just my .02 here, I installed Earth HD live wallpaper and the phone went crazy. I keep it plugged into my laptop during the day and noticed that the battery was slowly draining instead of maintaining, not much only a couple of percent. Toward the end of the day I noticed the the battery charge was in the 50% range and dropping fast, you could see the go down so I did a reboot and the charge came back at 4%. So you may want to look at what you have installed and try removing apps that may cause issues. I removed the app and now no problems, I'm also using Beastmod.
Basically as the title says, I've bought a "refurbished" one, but I'm not sure whether it's faulty, or whether this is just the average battery life of one of these things!
Woke up at 6am, I used it for about 30 mins this morning on facebook/ebay/bbc news through wifi. Send about 20 txt messages, 10 minutes on the phone. ANother 30 mins browsing/facebook on my lunch break. 12 hours later it's sitting at 17 hours battery life. And it's been on power save mode the WHOLE time. Is this just something I'm going to need to get used to or is mine just a dud?
LOVE the phone otherwise though
If you download Better Battery Stats app (either in the play store, or on this site here http://forum.xda-developers.com/showthread.php?t=1179809), and GSam battery monitor you can check up if certain apps are causing your battery to drain.
I had a really bad drain on my battery whilst in standby mode, and these battery apps helped show me that a few rogue apps were preventing my GS3 from going into deep sleep and the battery was draining even with the screen off.
I would say its more than likely an app causing your battery drain rather than a faulty phone. I spent weeks thinking I had a faulty phone then discovered these battery apps to find the problem... my battery lasts very well now. It just takes some patience to find the culprit.
What was your screen on time? Settings >> Battery >> click on screen and it will tell you the screen on time.
When you use GSam battery monitor, pay particular attention to the apps sections 'View time held awake' and 'View num times waking device'
John
Biggest culprit is usually having facebook sync on in the background, check that in settings. It's an awful app. I use other things like Seesmic to check facebook now.