Database Users

Battery Life?

How has everyone's battery life been with the Vibrant? I'm having a few issues with mine, I barely used my phone today, and its down to 57%, with cell standby taking up 33% of the battery.

Search the threads.seriously there are like 5000 battery life threads
Sent from my Samsung Vibrant using XDA App

So is there a fix for it? Or is it all samsungs fault? Or will the update solve it? This sucks, my battery can loose 30 percent in a matter of 2 hours...

Your battery has and always will react to the way you use it. If you a new user and play with it all day then its going to go fast. If you use 3g, wifi, bright screen you are going to get crappy battery life.
If you use it like a normal person with 6 to 10 calls a day, light web usage, some text messages you should get a battery to last you all day.
Fire up the screen and watch videos or listen to mp3's all day well then your not.

I turned off every little thing, and i still get crappy battery. Wifi off, gps off, sync off, wallpaper off, the whole shabang.

Does your phone actually die, or does it just show a percentage you are unhappy with?
The measurement seems to be a bit off on the Vibrant.
-bZj
_____
-sent from my Samsung Vibrant via XDAapp

I was disappointed woth my battery life as well. But I wiped the phone and the battery performs better in my mind. Anyone else have a similar experience?
Sent from my SGH-T959 using XDA App

After discharging/conditioning it a couple times, my battery is much better. 9 hours of standby overnight, it only lost 10% battery. That's pretty good IMO.

I just unplugged my phone an hour ago, watched some videos, browsed the web and my battery is down to 86%. It dropped 14% in less than an hour!
Sent from my SGH-T959 using XDA App

Is this your first smart/android phone? Your battery doesn't sound far off for an high end smart phone.you'll eventually learn how to extend the battery, especially after the newness wears off and your not playing with it 24/7 like most of us right now.remember this is an extremely high end phone, it takes a lot of juice to run the high end chip set.if you buy a high performance sports car do you expect to have some fun with it and get 30+mpg doing so? You've gotta understand what you've got. Soon enough there will be extended batteries available and if your willing to root, many devs are capable if tweaking the os to get the most out of the battery without hampering speed our features.
Sent from my SGH-T959 using XDA App

YR11 said:
How has everyone's battery life been with the Vibrant? I'm having a few issues with mine, I barely used my phone today, and its down to 57%, with cell standby taking up 33% of the battery.
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I'm having major issues too. Down to 28%(down to 25% now just typing this message) after 3 hours this morning. I just powered off and back on and I went from 50% down to 28%
Here we go again g1 all over again Seems like the only way to keep power is to uninstall everything.
I'm also seeing cell standby as a possible issue.
Frustrated... Guess it's time to reset to see if one of my apps is the issue...

I have 35 percent left after being off of the charger for 1 day and 5 hours. This is with light to moderate use, meaning some browsing, some phone calls, some market downloads, about 20 minutes of gaming, syncing, and reading e-mails. Of course my mileage varies if use the phone more. When the phone is about to die I'll snap a pic to share how long a full charge has lasted me.
Already this battery is lasting me 2-3x longer than the G1.

I tried a different battery and it's been really good to me =)
Sent from my Samsung Vibrant using XDA App

MMcCraryNJ said:
I have 35 percent left after being off of the charger for 1 day and 5 hours. This is with light to moderate use, meaning some browsing, some phone calls, some market downloads, about 20 minutes of gaming, syncing, and reading e-mails. Of course my mileage varies if use the phone more. When the phone is about to die I'll snap a pic to share how long a full charge has lasted me.
Already this battery is lasting me 2-3x longer than the G1.
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What percent do you show for "cell standby" from setting->about phone->battery use? I'm starting to think that my poor reception area is my issue.

I think the battery percentage shown in the Status is off compared to what is shown on the battery icon. That said, my battery lasts all day with normal use. If i use the web more than normal, of course the battery goes faster but still i usually get all day out of it. May have to charge it some in the evening.
Was hoping it would be better like the iPhone 4 battery seems to be. It is said that 2.2 will have a bit battery life but we'll see. Believe it when i see it.....if we ever get the update

My wife and I got Vibrants at the same time. She was getting great battery life, around 70% by the end of they day, and I was dying just after 1pm. I assumed that i had a defective phone, but decided to wipe it and try running "stock" prior to returning it for a new one.
After wiping the phone and starting over, I'm getting much better battery life, but I think that it's because I didn't use "push" email. I have a corporate Exchange email/calendar/contacts account, and before I had it set to 'push" (or something like that, my phone is syncing DoubleTwist right now, so I can't check. ) When I re-setup my email account, I told it to check only every 15 minutes.
My battery life has been much better this time around, and I think the email sync setting is 1/2 the reason, the other half being that T-Mobile coverage isn't great where I've been the last week. I'm guessing that the "push" sync meant that the phone needs to keep a data link to the server, which is fine if you have strong coverage. When it's weak, then the radio has to work overtime trying to maintain a link, which drains the battery.
I'm going to try this out today and tomorrow, and if the battery life is better than I'll keep it rather than try trading for a new one.

For one, if you're having a battery issue, buy a charger or spare battery. Get a task manager to kill your apps after a certain time and check into what services are running in the background. Just cause you're not playing with the phone doesn't mean its not running or using the battery.

dalepa said:
What percent do you show for "cell standby" from setting->about phone->battery use? I'm starting to think that my poor reception area is my issue.
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Cell Standby is at 24 percent.

Maybe its some quality control issue in the batteries? Everyone is getting such varied battery performance. I'm thinking of calling T-Mobile and requesting a new battery.

I notice on reboots many apps get started automatically. I've gotten better battery life just by manually shutting them down with astro file manager app. Ultimately any time an app is running even if its not using cpu cycles it still costs power to keep it in ram. Manually shutting down will minimize this obviously.
Sent from my SGH-T959 using XDA App

Bad Battery life all of the sudden

Only thing I did different was turned on google talk and my battery went from 100% down to 24% in 4.5 hours. Could google talk really take up that much battery? Prior usage I would get over 18 hours, thats with texting, emails and a couple of voice calls. Previously under the battery use the screen was always at the top but now the Android system is at the top.
Guess my main question is could google talk hit the battery that hard?

Did you recently root? Mine seems much worse since rooting.
Sent from my SGH-T959 using XDA App

No root, just turned on google talk

velocd said:
No root, just turned on google talk
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There you go. Gtalk must be accessing the internet often which is causing the drain in battery.

I have noticed if I leave a page open on Google Buzz, the GPS radio can drain the battery quick.
Another reason why I want to have a development ROM with all those nice troubleshooting tools to catch these problems quicker. Like before the battery is dead.

I have similarly awful battery life on the Vibrant, and I've been running GTalk 24/7 since I purchased the phone. Going to run it with no GTalk today to see it affects life. I'll post my results here later.

coolguy949 said:
Did you recently root? Mine seems much worse since rooting.
Sent from my SGH-T959 using XDA App
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I'm rooted and I still have 23% battery after 29 hours unplugged. Any other apps you got running in the background killing your battery?

After I rooted I didn't add back the Facebook and other accounts that keep the contacts updated with their status and whatnot. I get a full 24 hours out of a charge now so I am really pleased with the battery life.

I am running mine rooted, gTalk on, google sync and one exchange push sync always on, "Twitter" twitter app updating @ 30min., LauncherPro, live wallpaper, gps on standby, and I have to say coming from G1, 3G Slide, HD2, this has the best battery life so far. Not playing any games on it, nor any media streaming aside from the occasional few minutes.
Now, it has only been two days running it that way, but one can hope it stays like this! Running it unplugged from 7am to 1:30am (next day) and still having 45% battery left after a day of medium heavy use is pure bliss!

mnotz said:
I am running mine rooted, gTalk on, google sync and one exchange push sync always on, "Twitter" twitter app updating @ 30min., LauncherPro, live wallpaper, gps on standby, and I have to say coming from G1, 3G Slide, HD2, this has the best battery life so far. Not playing any games on it, nor any media streaming aside from the occasional few minutes.
Now, it has only been two days running it that way, but one can hope it stays like this! Running it unplugged from 7am to 1:30am (next day) and still having 45% battery left after a day of medium heavy use is pure bliss!
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Was your phone in your pocket or out indoors on a counter all day?

mnotz said:
I am running mine rooted, gTalk on, google sync and one exchange push sync always on, "Twitter" twitter app updating @ 30min., LauncherPro, live wallpaper, gps on standby, and I have to say coming from G1, 3G Slide, HD2, this has the best battery life so far. Not playing any games on it, nor any media streaming aside from the occasional few minutes.
Now, it has only been two days running it that way, but one can hope it stays like this! Running it unplugged from 7am to 1:30am (next day) and still having 45% battery left after a day of medium heavy use is pure bliss!
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im sorry but i am every good with phones and adjusting the battery drain and this seems terribly inaccurate unless you pick up your phone once an hour and use it. There is no way you have almost 50 percent better left on this device while running all of that stuff. and you have it on 3g? or edge? is the screen bright?
overall the battery has been TERRIBLE. and it takes forever to charge. that's why i sent it back. I hate USB charger cords... seems they take loner to charge.
much love u must have an extended battery which isnt even out yet lol

hah2110 said:
Was your phone in your pocket or out indoors on a counter all day?
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lmao lool same thing i asked loool

Well, it was google talk that was doing it. I work in a large building and get about 2-3 bars of service which isn't bad but leaving google talk on literally raped my battery.

Pneumatic said:
After I rooted I didn't add back the Facebook and other accounts that keep the contacts updated with their status and whatnot. I get a full 24 hours out of a charge now so I am really pleased with the battery life.
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Thats an awesome idea!!! Facebook sync is almost retarded to have on this phone since im not running TW or looking through my contacts to check on ppl... there is no reason why I should even have to keep the account synced. The service is still probably running in the background and dropping/retrying. Thanks!!!
velocd said:
Well, it was google talk that was doing it. I work in a large building and get about 2-3 bars of service which isn't bad but leaving google talk on literally raped my battery.
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AWESOME! Thank you OP for testing and bringing us back your findings. This is how it should be done!

I've had my Vibrant since roll-out day. The battery seemed to be working well and lasting a long time. Then it began to drain rapidly going from a full charge to under 25% in about 4.5 hours. This happens with or without use. I tried disabling sync, wi-fi, push, bt, etc and I didn't see any improvement to speak of. I also set it to use 2G networks only. That was all before rooting yesterday. Today it's no better at all so rooting doesn't seem to have had any effect.
As far as charging goes- it's horrible (mains, not computer); over 4 hours from completely dead (auto-shutdown) to 100%. Even if I begin charging at 35% it still takes over 3 hours to get to 100%.
What does all this mean? Beats me. I like the phone and I am hoping it's not a hardware issue. My rooted G1 with an extended life battery running Froyo lasted all day long with constant data use, go figure.
I'll be watching the forums over the next several days with the hope that something will break loose.

stepinmyworld said:
im sorry but i am every good with phones and adjusting the battery drain and this seems terribly inaccurate unless you pick up your phone once an hour and use it. There is no way you have almost 50 percent better left on this device while running all of that stuff. and you have it on 3g? or edge? is the screen bright?
overall the battery has been TERRIBLE. and it takes forever to charge. that's why i sent it back. I hate USB charger cords... seems they take loner to charge.
much love u must have an extended battery which isnt even out yet lol
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Nope, just a stock Vibrant battery. Phone lays next to me on my desk at the office all day, bounces between Edge and 3G here, currently, 2:16pm, the battery status in the phone settings shows a level of 76%, was unplugged this morning @ around 7:30. At my house I have full bars 3G. Battery use is 35% Voice Calls, 28% Display, 18% Cell standby, 13% Phone idle, 3% Android system and 2% Android OS.
I am not much into adjusting battery drain or anything like you, but those are the readings from the phone. How accurate they are or not, no idea, but this is definitely the best smartphone I ever owned concerning the battery life. And I owned a **** ton of them over the years. But I also don't complain too much, because getting through a full day is all I need.
Screen is set to auto-brightness with the application brightness thingy activated.
--Zax
Edit: Reading my original post, I guess it could be a bit confusing - I did not mean it has lasted for two days like this - I meant I own the phone only for two days, and it was unplugged yesterday from 7am to 1:30am next day (18.5h)

stepinmyworld said:
lmao lool same thing i asked loool
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It is a legit question. On my N1 and this phone I see HUGE differences in battery when the device is in heat/pocket and inside just sitting on a counter.

How to get better battery life

PEOPLE ARE SAYING GREAT THINGS ABOUT VIBRANT BATTERY LIFE BUT MINE IS NOT THAT GREAT I AM ROOTED SO I SHOULD BE GETTING BETTER BATTERY LIFE. BUT I AM NOT. i have attached a screen shot. is the usage normal?

now my display is 74 percent why is it so dammmm high and i have set on auto brightness i tried the lowest brightness possible it still wont go down.. please help

what is that you are using to see your usge like that?

geocepe said:
what is that you are using to see your usge like that?
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you mean how do i get to that screen? settings - about phone - battery usage.

thanks. mine is doing the same. ever since i rooted it my battery life is bad

geocepe said:
thanks. mine is doing the same. ever since i rooted it my battery life is bad
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same with mine i wonder if i unroot it will it make it better

it might i was thinking of doing that myself

Rooting doesn't effect battery life.
Sent from my SGH-T959 using XDA App

You went down 13% in 4 mins -________-. Go exchange your phone, lmao. Or turn off 3G, Accounts & Sync, turn off brightness, and install JuiceDefender. See if that makes a difference. My phone goes down 1% in about 2 hours...

mine barley lasts until evening when I plug it back in... but thats just how these phones are. 1% in 2 hours is very unlikely unless you just don't use it and have everything disabled.

Rooting your phone alone has no advert consequences on your phone's battery life. What you do on your phone does
Sent from my SGH-T959 using XDA App

should i call samsung and tell them about the battery issue?

BigWorldJust said:
You went down 13% in 4 mins -________-. Go exchange your phone, lmao. Or turn off 3G, Accounts & Sync, turn off brightness, and install JuiceDefender. See if that makes a difference. My phone goes down 1% in about 2 hours...
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So you go 200 hours between charging? I find it hard to believe that you only need to plug it in every 8 days.

ProximaC said:
So you go 200 hours between charging? I find it hard to believe that you only need to plug it in every 8 days.
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indeed what a troll

Just turning off push email/notifications can have a significant effect on battery run time. I doubled my run time by putting some reasonable settings on my sync intervals.
I refresh my exchange account every 15 mins during peak-time ( 1 hour off-peak ), Tweetdeck every 2 hours, all other accounts hourly. With moderate use I have no problem going 24 hours on a single charge.
Also be on the lookout for misbehaving apps. I had a single dormant streaming app sitting in the background using over 10% of my battery. I kill that app manually after every use.
Sent from Samsung Vibrant

As it's being said before, if you do not use your device you get excellent battery life out of it - might as well have a painted brick on your desk.

Mine lasts a bit more than half a day, but I use mu phone a lot for streaming, texting, browsing, a game sometimes. I think it is about average, I wouldn't sweat it. Still beats my old.nexus one in battery life
Sent from my SGH-T959 using XDA App

My battery last about 24hrs on average. I bought extra batteries and I have run each of them until they hit 1% and then I use and external battery charger, bought of of ebay, came with 2 batteries and a charger for them for 14 bucks, and i do have certian things i do that drain more than others, but for instance i watch a 2 hour movie, and started with a fresh battery, (99%) and when the movie was over I was at 73%, much better than when i first got my phone, but i also still use advance task manager which everyone says is bad for the phone, but i just use it and exempt everything that is used for normal operations, then it only kills the apps i have used and want to kill. now the settings does allow you to do this by each app, but i am just lazy and paid for the app back on my G1 days and it makes killing them in widget form so one click. i just tried to exclude all the things that the phone uses to operate smoothly, and kill the rest of the garbage apps, also you can try a program autostarts, i have it as it suggested it in the app forum sticky, costs a buck, but i used it, not sure how much it helps, but like i said all I have done and how i use all of my battery each and every use now gives me outstanding battery life. No 8 days or anything but still tons better than my G1 and i didn't keep much running like i do on this one. Also turn off auto brightness, and just use the slide if you need to turn it up, dont use live wallpapers and turn it to use 2g only, and then when you need the 3g turn that back on, there is widgets to get for that so its a one click as 3g really drains the battery, so when not in use go to 2g if your not surfing the web or wacthing videos off a site, doing those things will help the life of your battery.

flameinthefire said:
now my display is 74 percent why is it so dammmm high and i have set on auto brightness i tried the lowest brightness possible it still wont go down.. please help
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That just means that your while your phone was turned on, 74 percent of the total power was used by your display.
Makes sense because you turned your screen on for about 74% of the time.

Try running fix permissions from clockwork. I recently got a boost in power & battery life from doing eugenes v6 mod and the suggested lag.
Vibe the XDApp

[Q] Tips to extend battery life? Anyone?

Hey guys,
Just got my Epic yesterday.. coming from the G1 with lots of experience loading and tweaking ROMs and dealing with same/similar battery issues.
After unpacking the Epic I used it and let it drain down to zero before recharging it; after a full recharge, I loaded up the 7 screens with widgets and ran a live wallpaper (fish). I didn't really use the phone much at all and the phone went from 100% battery down to zero in the span of only four hours!!! Geeze, you've got to be kidding me - four hours battery life?? WTF????!!
Back to the drawing board: I rooted it and ran SetCPU with some power saving profiles. Removed the live wallpaper and went to stock wallpaper. Set display power off at 30 seconds. Note that 4G remains off since there's no 4G in my area..
Couple of questions:
1. Is there any way to toggle 2G/3G like there was on my old G1? I know that was a power saver.
2. I didn't stop to read all the documentation yet (typical male, I know) but is there any way to wake this thing up from sleep mode besides pressing the power button? I can see that power button breaking for as much use as it's getting from me constantly having to wake this thing up!
3. My brightness setting is set to auto - since the display is usually the biggest drain on these things, is there a recommended manual brightness setting (percentage) that seems to work well for you and saves on battery power?
I'm waiting for the Seideo Extended Battery (just like many of you) and am wondering if I should keep the Epic since I'm on the Sprint 30-day Easy Return program.
Appreciate hearing from everyone!
Chris R.

I don't have 4G where I am. But, I have a all black wallpaper(uses less power) and unrooted. I easily get about 12-18hr out of my phone wit normal use(text, talk, and surfing the net with skyfire). Only thing that really kills my battery are games(Robo Defense can take over 30min to play one game).

Thanks for the reply - situation NOT improving
Thanks for the reply.. unfortunately, the situation is not improving...
I tried setting a Sleep Profile using SetCPU that would under-clock the CPU (using the stock kernel) once the screen dimmed and the phone went into Sleep Mode. Unfortunately, as mentioned in another thread here, the result was that the phone froze and required a battery-pull to reset.
I'm really starting to lose my enthusiasm for this device; as beautiful a display and as responsive a CPU/GPU, all of that doesn't mean much if you don't have good power management built into the firmware. At 6PM this evening I pulled it off the charger at 67% charged, it's now 8:35 PM, only 2.5 hours later and I'm down to 22%. I'm in a decent coverage area and get 2-4 bars of 3G strength so I don't think it's an issue of the radio being the culprit; in-fact if you check the battery stats it reports that that lovely Display is accountable for 78% of the battery usage! So I guess we're paying a hefty price for these 4-inch AMOLED displays!
I read somewhere else that the most recent update (DI07) has caused the battery performance to decrease; since my unit is brand-new it immediately went and installed DI07 shortly after the first boot-up so I have nothing to compare it to.. can anyone comment on that?
Thanks!
Chris R.

I'm sure custom ROMs will put performance / battery life on the top of the list but until then, I use JuiceDefender beta and have seen pretty good results with it. It shuts off data whenever the screen is off and since my screen is off a good amount (only use my phone if I need to check email, call, and / or text, which is rare when I'm at work). Other than that, yes, use black wallpaper, lower brightness to the min. in the OS and browser, and don't leave apps that constantly use 3G open (things like ebuddy, pandora, etc.). 3G really destroys battery life so minimal use of 3G data would maximize battery life. Maybe the devs can figure out a way to get at least one full day of battery life on this phone. I'm hoping that is the case.
As to your post, yes, DI07 has resulted in poorer battery life, for whatever reason. I was definitely getting a few hours more with the older firmware. I would not lose hope yet. As disappointed as you are (and all of us are, I can assure you of that), the devs are really starting to push out nice ROMs already, and in a few weeks to a month, I bet we will see some solid battery life. Hell, even 2.2 should yield much better results. Patience

Thanks for the tip!
nimaim said:
I'm sure custom ROMs will put performance / battery life on the top of the list but until then, I use JuiceDefender beta and have seen pretty good results with it. It shuts off data whenever the screen is off and since my screen is off a good amount (only use my phone if I need to check email, call, and / or text, which is rare when I'm at work).
Click to expand...
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Thanks for the reply! Also thanks for the tip regarding JuiceDefender! What a great app! will give it some more time and report results back here.
Thanks again!
Chris R.

nimaim said:
I'm sure custom ROMs will put performance / battery life on the top of the list but until then, I use JuiceDefender beta and have seen pretty good results with it. It shuts off data whenever the screen is off and since my screen is off a good amount (only use my phone if I need to check email, call, and / or text, which is rare when I'm at work). Other than that, yes, use black wallpaper, lower brightness to the min. in the OS and browser, and don't leave apps that constantly use 3G open (things like ebuddy, pandora, etc.). 3G really destroys battery life so minimal use of 3G data would maximize battery life. Maybe the devs can figure out a way to get at least one full day of battery life on this phone. I'm hoping that is the case.
As to your post, yes, DI07 has resulted in poorer battery life, for whatever reason. I was definitely getting a few hours more with the older firmware. I would not lose hope yet. As disappointed as you are (and all of us are, I can assure you of that), the devs are really starting to push out nice ROMs already, and in a few weeks to a month, I bet we will see some solid battery life. Hell, even 2.2 should yield much better results. Patience
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DI07 has hurt my battery life substantially. In fact, my battery drains very close to twice as fast now with the update. I don't understand what they did. My phone certainly doesn't seem any faster, my display is dimmer, and battery life sucks. I'm going to have to go back to DG27 so I can use my phone all day. With DI07 it always dies on me by mid afternoon. With DG27 it was still running by 11pm at night without even a battery low warning.

juice defender ftw
also, use advanced task killer with low security settings to kill all the background processes. Set the autokill to when the screen turns off. This keeps everything pretty well managed and helps with battery as well

JUICE DEFENDER BATTERY!!! Saved my phone from flying out of my car window at 10 in the morning........

here is a link to a thread I started.
Sharing my juice defender settings. I also use ultimate juice.
http://forum.ppcgeeks.com/sprint-epic-4g/133933-sharing-my-juice-defender-settings.html
I can get a day and a half (or slightly longer) out of a single charge.
YMMV.
Hope this helps

Advanced task killer + Juice Defender. You could also get some custom roms and Kernals that would help boost it.
But that's your best hope. Keep off 4g, wifi, bluetooth, etc.

compujock said:
DI07 has hurt my battery life substantially. In fact, my battery drains very close to twice as fast now with the update. I don't understand what they did. My phone certainly doesn't seem any faster, my display is dimmer, and battery life sucks. I'm going to have to go back to DG27 so I can use my phone all day. With DI07 it always dies on me by mid afternoon. With DG27 it was still running by 11pm at night without even a battery low warning.
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Look here- try stopping the DRM service and see if that helps your battery life with D107

jimmyz said:
Look here- try stopping the DRM service and see if that helps your battery life with D107
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Ah, the evils of DRM can strike in unexpected ways...
I wasn't really having a battery problem but I just turned DRM off, so we'll see if battery life improves anyway.
I had a whole long post here that got wiped with the xda disk array failure, so I'll just sum that up here too:
1) Use wi-fi if possible - it REALLY helps
2) 4G does not seem to use the battery any more than 3G, although hunting for 4G does and 4G coverage is not as extensive as 3G even in 4G areas. So it's still best to leave it off if you're moving around.
3) Dim your screen and use a dark, static background. AMOLED screens don't work like LCD's; they use more power the more pixels are lit and the brighter they are.
4) GPS also kills your battery - leave that off unless you need it too.
I think that's it. I get about 18 hours on DI07 (even before trying the DRM thing; maybe I can get to a full day!).
One thing I'm noticing after checking DRM - I've got Google Maps' LocationService popping up about every 10 seconds, and I can't seem to shut it off permanently. (I went into Lattitude and turned that off, not sure what else to do.) That can't be helping... anyone know how to get rid of that?

I'm using juice defender and a constant email junkie, but lite use on other aspects of the phone. It goes off charger at 5:30 am and I'm about 67% at around 3p. It then goes in the car charger on the way home. This has much better battery life than the Pre or the Hero as with both I had to turn off email to get it to last throughout the day.
I don't expect these phones to last days, but I expect any phone that I get to last the business day. I've always been one to charge overnight.

Wifi drains battery more from what I've read.
Sent from my SPH-D700 using XDA App

I've heard the opposite that wifi (as long as it's connected) uses up less battery than 3g/4g. Any of them will suck the battery dry if they're searching, so make sure you have a connection to one of them.

Hi everyone, new to the forum. Just started checking it out when the Epic was released and this is my first post. Anyways, here's my question. My phone's been off the charger for 7 hours and 17 minutes and it is now down to 15%.
Display 79%
Cell standby 7%
Android System 4%
Phone idle 2%
Swype 2%
I've gone into the display settings and I thought I had set everything up optimally. The brightness is always very low. The screen timeout is 15 seconds and the keyboard matches that. I don't know what else I can do to cripple the phone to get the battery to last longer.
I have had wifi on, 4g off, bluetooth off, gps off. Really all I have done this afternoon while watching NFL games is check my yahoo fantasy score, play 2 games of WordFeud, and check twitter and facebook. I purchased Juice Defender a week ago and it has been running all day.
Any suggestions for how I can reduce the drain from the display? My background is a black and white picture of a friend of mine, which I thought would help.
Don't get me wrong, I love this phone. But the battery life I've seen is just terrible. I'd love to buy the extended battery from Seidio whenever its available, at least that would make it last longer even if the settings aren't tweaked.

Do you have juice defender installed?

Yep. Its installed and running now.
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bagelicious said:
Hi everyone, new to the forum. Just started checking it out when the Epic was released and this is my first post. Anyways, here's my question. My phone's been off the charger for 7 hours and 17 minutes and it is now down to 15%.
Display 79%
Cell standby 7%
Android System 4%
Phone idle 2%
Swype 2%
I've gone into the display settings and I thought I had set everything up optimally. The brightness is always very low. The screen timeout is 15 seconds and the keyboard matches that. I don't know what else I can do to cripple the phone to get the battery to last longer.
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There are only two reasons for your display to be using that much battery:
a) it's too bright, or
b) you're using it a lot.
If you're using the phone a lot, your battery's going to run out pretty quick and there's no way around that. If you're using it a "normal" amount, which to me means maybe an hour *total* per day of having the display on, then the other culprit is going to be your brightness. (Some would argue that's less than a normal amount, but think about it... you get a new phone, you're going to play with it for a week or two until you've seen all the cool stuff. But at some point you're going to start putting it away most of the time and just using it when someone calls you, you get a message/email or maybe to play a game or two while waiting for the train.)
Set your brightness *all* the way down, just as a test for a couple days. Make sure all the "power saving" features of the display are turned *off* (auto brightness, and whatever that "picture detection" feature's called, I can't remember). You just want the display as dim as possible all the time, just to see what happens. See what the battery usage says after a day or two of this.
My bet is that you'll see a drop, and then as you get into a more normal usage pattern it'll drop further still. You can raise the brightness a couple ticks then as you learn how to stretch your battery out.
Personally, my display is rarely over 15% or so of my usage. Today it's 29%, but it's a Sunday and I don't have anything better to do but play around on my phone.
btw, it's still the first day I've tried this but that DRM thing might be working. It's almost 9PM and I'm still on like 80% battery, and like I said I have been using the phone off and on throughout the day.

That has helped tremendously. I installed it pretty much when I got the phone and I'm able to last the whole work day with 67% left. (10 hour day)

[TIPS] Juice Defender, Why its good and bad

Reading through threads I see lots of people saying JD and similar apps are good and lots saying they are bad. This is quite confusing for someone who just wants to get good battery life. In my experience I have gone from finding it good to finding it bad. I will try and explain why this occurs so that people are able to decide if it will be worthwhile for them.
First install Battery Monitor Widget and find out what sort of drain your battery is experiencing every hour.
With a stock rooted G2 with data connection on continually (no wifi) I was getting around 80-150 mA which explains why it would not last longer that about 16 hours. Most of this drain seems to occur from data connections. After installing JD or something similar the drain can be reduced to around 50 mA. Which is great, suddenly you get the claimed 1.5 to 2x battery life. JD seems great.
But after you install a good ROM and custom kernal, remove or freeze all the apps that keep using your data connection unnecessarily and install Better Battery stats you observe that JD stops the phone going into a proper deep sleep. If you dump it the drain on the phone drops to very low numbers usually under 20mA sometimes 5mA or even 2mA. This means you use around 1-3% of the battery life of the phone overnight with no changes. Now your phone can last days between charges. Note this is with Data or Wifi connections turned on and Sync active always.
Summary:
On a badly set up phone JD improves battery life (for the lazy)
On a well set up phone JD worsens battery life (takes some time)
Note: I got the best results using Speedmods kernal but I have no reason to think that other kernals could not get similarly low battery drains.

Thanks for sharing your observations. I have juice defender and have had similar findings. The wake locks jd causes play into the aos bug of the phone which is why it can make things worse on a well set up phone (the extra drain from the wake locks outweighs the savings from turning the data connection off when it's not in use). If not for the aos bug it would probably be good in all cases. I had noticed this in my testing and am glad to see I'm not the only one.
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Thanks for sharing your observations.
If I had seen your post much earlier than I wouldn't have to buy JD. Anyway, I have gone through the hard way, and learnt how to keep my phone organized and minimized rouge apps issue. JD is pretty much useless now.
IMHO, I think Battery monitor widget pro seems to be a much better buy

Thanx for this helpful info!
BTW, kernel not kernal

I do not have a lot of widgets and sync as little as possible. Mail sync is only on demand (when I have time to read it), and Weather is every 6 hour (disabled in night time).
So my battery live is good ½% standby and with normal use it can easily last a full day (no gaming, just Internet, Talk, SMS).
I decided to try JD in order to save even more juice, but JD ended up using more battery than it saved me!
So I can confirm that JD is good for the "lazy user" and bad if your aware of your sync. and how your apps behave.

What do u mean by dumping? You said if you dump it and the drain goea away? Im a bit confused
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best way to save battery overnight are, disable all internet connection including Wifi, switch to 2G, kill all task then have a sweet dream till next sun rises

KurskS said:
What do u mean by dumping? You said if you dump it and the drain goea away? Im a bit confused
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By 'dump' I just meant uninstall JD. If you uninstall JD your phone will be able to deep sleep properly provided it is set up well and you actually save more battery.

foxcheng said:
best way to save battery overnight are, disable all internet connection including Wifi, switch to 2G, kill all task then have a sweet dream till next sun rises
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Sure you can do that, but it's not necessary. I leave wifi and 3g on and still have drain of 5mA all night. I wake up and have lost almost no battery. The same applies for when the phone is idle during the day.

razar77 said:
Sure you can do that, but it's not necessary. I leave wifi and 3g on and still have drain of 5mA all night. I wake up and have lost almost no battery. The same applies for when the phone is idle during the day.
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Click to collapse
What kernel , Rom and apps (that sync) are you using?
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