Battery Life

[RogerPodacter]

if you want to know why nexus and all android phones have poor battery, it is because they all keep a constant data session open at all times. using froyo, go into settings and turn off mobile data for a day and see how good your battery improves.

other phones do not do this. most other phones only initiate the data session when something specifically needs data access, then it closes it when its finished. not android. android keeps data session running AT ALL TIMES, this is the problem.

 

[Roze]

if you want to know why nexus and all android phones have poor battery, it is because they all keep a constant data session open at all times. using froyo, go into settings and turn off mobile data for a day and see how good your battery improves.

other phones do not do this. most other phones only initiate the data session when something specifically needs data access, then it closes it when its finished. not android. android keeps data session running AT ALL TIMES, this is the problem.

'Data Enabled: enable data access over Mobile network'...so is that 3G?

 

[Teknologic]

'Data Enabled: enable data access over Mobile network'...so is that 3G?

If you are on a 3G network, it's 3G. If you're on a GSM network probably EDGE or something.
It's the data connection of your signal. So when you disable it, you'll still get calls and texts. But your 'mobile internet' connection will be severed.

 

[Roze]

I'm afraid my battery's been bitten by the drain bug aswel since froyo. I didn't notice at first after updating, but after checking my juiceplotter for a month back I noticed my battery was still at 40% after 26 hours of medium use. Where now it's below 20% after 19 hours of light use (few hours of wifi, less then 30 mins of EDGE data enabled, display at minimum unless for outdoor viewing, not for more then a few minutes).
I have no idea why, I'm monitoring my apps with system panel but no app in particular seems to be a battery hog. I really can't find what's draining my battery this hard so I'm also conditioning it by running a few full cycles.. no improvement so far tho

How's your battery life now Technologic? Has it gotten better or were you able to find a non friendly 2.2 app?

If you are on a 3G network, it's 3G. If you're on a GSM network probably EDGE or something.
It's the data connection of your signal. So when you disable it, you'll still get calls and texts. But your 'mobile internet' connection will be severed.

OK...I think I got it now XD

 

[JD76]

Hi.. Im a new Nexus One user. I just got the phone on Monday. I dont have it rooted and am running the latest build of Froyo.

My battery is depleting at an alarming rate. Just this morning, after a 3 min conversation and a gmail check, my battery dropped almost 10%.

1) I have no live wallpapers running
2) I have tried using an app killer and not using one since its effectveness is questionable.
3) I have my display all the way down
4) Bluetooth off, wifi off, sync off
5) No major widgets besides a calendar widget. rest are just app shortcuts and the power control widget.

I saw someone with a Nexus One yesterday - he has bluetooth on, a live wall paper and after 5 hours - still in the 90% range. My phone loses 10% in 10 mins after a 3 min call, and email checking.

What do you think the problem is? Phone is brand new

 

[Roze]

Hi.. Im a new Nexus One user. I just got the phone on Monday. I dont have it rooted and am running the latest build of Froyo.

My battery is depleting at an alarming rate. Just this morning, after a 3 min conversation and a gmail check, my battery dropped almost 10%.

1) I have no live wallpapers running
2) I have tried using an app killer and not using one since its effectveness is questionable.
3) I have my display all the way down
4) Bluetooth off, wifi off, sync off
5) No major widgets besides a calendar widget. rest are just app shortcuts and the power control widget.

I saw someone with a Nexus One yesterday - he has bluetooth on, a live wall paper and after 5 hours - still in the 90% range. My phone loses 10% in 10 mins after a 3 min call, and email checking.

What do you think the problem is? Phone is brand new

You need to conditioned your battery. Give it a couple of full discharges and see how it is by the end of the week. My battery was not that great when I first got my Nexus. Also, the radio doesn't seem to be efficient wrt phone calls. So making phone calls will drain your phone really badly. I have a 9 minutes call and that used up 26% of 33% of my battery. So total battery use is 9% for a 9 minutes phone call.

This is a good thread on batteries: http://androidforums.com/htc-desire/77857-batteries-explained.html

 

[Deathwish238]

Nice practical advice

My device has it's highest battery usage as Cell standby, but that's at around 30%....best thing I ever did was turn off data connections overnight.

Works a charm

A better solution is to always have WiFi on if you have an available network.

 

[Drhyde]

Been playing around with JuiceDefender and I'm on the fence right now with it. I'm pretty sure it's working and helping my phone's battery life. According to it, my battery life is better by about 75%. Pulling the phone off the charger, JuicePlotter usually pegs the battery at around 24 hours, which is probably right. It's about as good as I could hope for as long as it makes it through the day (which my Behold II could never do). I don't have a lot of high hopes because smartphones typically require more battery for their processor intensive applications.

 

[bitxboi]

Been playing around with JuiceDefender and I'm on the fence right now with it. I'm pretty sure it's working and helping my phone's battery life. According to it, my battery life is better by about 75%. Pulling the phone off the charger, JuicePlotter usually pegs the battery at around 24 hours, which is probably right. It's about as good as I could hope for as long as it makes it through the day (which my Behold II could never do). I don't have a lot of high hopes because smartphones typically require more battery for their processor intensive applications.

I'm on JuiceDefender at the moment too. Looks like it makes a pretty decent job, but sometimes I cannot help but think that it's messing with the data connections too much, and from time to time I don't get a data connection when I unlock the screen (set to do it).
One of the things I disagree is with the saved battery indicator though

 

[Deathwish238]

JuiceDefender is good, but every so often it won't turn my APN data back on until I restart the phone. Until that issue is resolved...I can't bother using it.


We need much better batteries. I wonder why they don't make kinetically charging batteries and/or solar charging batteries for phones yet.

 

[phlojo]

if you want to know why nexus and all android phones have poor battery, it is because they all keep a constant data session open at all times. using froyo, go into settings and turn off mobile data for a day and see how good your battery improves.

Wouldn't turning off the APN do the same thing tho?

I have some doubts about "keeping a data session open", as you put it. From a technical standpoint, in order to have a session (e.g. like a session that a web server makes available for a client to connect to, or a database session) there needs to be a connection. There is no such thing as an idle session. Using that analogy, if no data is transmitted or received by any application, there wouldn't be an "open data session" that would require some process to be running that in turn would be consuming battery. I think the session becomes open "on demand" when an application sends data to the network via a 3G/GPRS/EDGE link.

I use an application called "Toggle Settings" which I find very useful. It provides quick shortcuts for turning on/off the APN, Wifi, BT, Sync, 2G/3G switch, etc. It's very useful and you can even set some profiles (e.g. home, work, night) that change these settings, set these profiles to become active automatically at particular times, etc. The juice defender sounds very similar.

 

[Snazzy]

I just got my Nexus yesterday and immediately rooted it and installed SetCPU. After an 18 hour day with moderate usage including 30 minutes talk, 3G, GPS, Exchange and WIFI I came home with 50% charge. The same day on my Galaxy i7500 would result in a about a 10-20% charge remaining so I am quite happy with the N1 battery.

 

[Deathwish238]

I'm on ATT with a T-Mo Nexus and I feel like phone calls eat my battery too.

Hi.. Im a new Nexus One user. I just got the phone on Monday. I dont have it rooted and am running the latest build of Froyo.

My battery is depleting at an alarming rate. Just this morning, after a 3 min conversation and a gmail check, my battery dropped almost 10%.

1) I have no live wallpapers running
2) I have tried using an app killer and not using one since its effectveness is questionable.
3) I have my display all the way down
4) Bluetooth off, wifi off, sync off
5) No major widgets besides a calendar widget. rest are just app shortcuts and the power control widget.

I saw someone with a Nexus One yesterday - he has bluetooth on, a live wall paper and after 5 hours - still in the 90% range. My phone loses 10% in 10 mins after a 3 min call, and email checking.

What do you think the problem is? Phone is brand new

Are you on ATT?

The Nexus One doesn't last very long on phone calls alone. I feel that the radio is inefficient wrt this. Google quoted that the N1 should be able to handle over 10 hrs of talk time on 2G. Starting with 100% battery, if I just talked, I got around 4hrs of talk time, after which, the battery is dead (less than 10% left). I've done this a few times when I talked to my friends. This was with Eclair, not sure how the talk time is with FroYo.

Are you on ATT too?

 

[daffyduck]

If you are rooted, try Enomther's latest ROM on XDA Devs.....

The battery life is much better than Cyanogen and probably Stock.....my phone gets quite heavy use, mainly surfing on data, rss feeds, etc, on a working day. The battery will still last 16hrs.

If you only lightly used, the life I would bet would be much improved over this.

 

[Roze]

I'm on ATT with a T-Mo Nexus and I feel like phone calls eat my battery too.



Are you on ATT too?

I have the AT&T Nexus and my carrier is Rogers (AT&T) in Canada

 

[Teknologic]

How's your battery life now Technologic? Has it gotten better or were you able to find a non friendly 2.2 app?

Hey, sorry for the delayed reply. I've been monitoring my apps closely since 2.2 and there hasn't been any rogue app so far.
Removed a bunch, installed some new,.. not a single app was consuming more then it should.
But after conditioning my battery again (I ran 4 full cycles) my battery life has gotten close to pre-froyo batt life. Not quite the same, but close enough not to obsess over it.

 

[mkrmec]

I've got no idea what are you guys doing with your phone or how you charge them etc... but I get trough the day easly with 4 hours of display ON.

I have Cyanogen's CM6 RC2 ROM atm and I charge my phone only if it's in the red zone of the battery indicator.

 

[cshih2]

anyone knows where can i get the OEM battery now?

 

[Roze]

anyone knows where can i get the OEM battery now?

Ebay for sure but you can try calling HTC to see if they'll sell you the battery since they sell you the case.

 

[JDlawyer]

Here's my recommendation. Download Advanced Task Killer. I installed it about a week ago and have noticed a huge increase in battery life. Once you install it choose which apps you want it to kill and then install the widget on the home screen. I tap on the widget as often as I can. No more issues with my battery life.

What bothers me though is that I should have to install this app to begin with. Android should do this without the need of an external app. This is a complaint that I have with Android. I hope that this gets built into the operating system in a future update. Google has a good track record of responding to issues like these in updates.

 

[Roze]

Here's my recommendation. Download Advanced Task Killer. I installed it about a week ago and have noticed a huge increase in battery life. Once you install it choose which apps you want it to kill and then install the widget on the home screen. I tap on the widget as often as I can. No more issues with my battery life.

What bothers me though is that I should have to install this app to begin with. Android should do this without the need of an external app. This is a complaint that I have with Android. I hope that this gets built into the operating system in a future update. Google has a good track record of responding to issues like these in updates.

The thing about Android is that it gives you choices, one reason why there are very little apps that come preinstall on it. I for one do NOT want a task killer to come preinstall on my phone thank you very much. If you like it, fine by all means use it, but I don't want to be force to use an app and having a preinstall app that I have no intention of using is a waste of my memory.

On a side note, you know that as Android is based on the Linux kernel, it does not need to be manage by a task managing app (i.e. a task killer). If you think task killer is working, it may be because you have apps on your phones that aren't optimal and not coded properly (i.e. keeping the phone awake constantly) so it MAY seem that the task killer is working, but the best way to go is to uninstall those apps.

 

[mkrmec]

Android already does kill tasks but differently as other task killers. Task killers are actualy make ot worse since the majority of the tasks start back up right after you kill them. Creating more cpu time etc. That's why they are not needed acording to google devs..

And you should select and exclude the tasks you don't want to kill and then press the widget button like crazy be sure to exclude the alarm clock hehe

 

[Snazzy]

I stopped using a task killer when I got my N1. I realize now that they are not needed and do more harm than good.

 

[Teknologic]

Here's my recommendation. Download Advanced Task Killer. I installed it about a week ago and have noticed a huge increase in battery life. Once you install it choose which apps you want it to kill and then install the widget on the home screen. I tap on the widget as often as I can. No more issues with my battery life.

What bothers me though is that I should have to install this app to begin with. Android should do this without the need of an external app. This is a complaint that I have with Android. I hope that this gets built into the operating system in a future update. Google has a good track record of responding to issues like these in updates.

You best be trollin'

Taskkillers have been proven useless time and time again. The only thing remotely like a taskkiller I'd recommend is the SystemPanel app, to monitor any possible bad apps and kill/uninstall accordingly.

I used to use a taskkiller, heck I used to have 2. My phone is alot more stable without em.

 

[snakeybidder]

Hi to everyone here, I have to share this with everybody.

I decided to root the other day (very simple by the way) and i have stuck with stock froyo rom. Im using setcpu with default settings and applied the Kmobs 950 kernal for stock froyo (also very simple to do with rom manager).

My battery is now on 16h 21m with 53% left

Finally my dream phone is everything i ever needed and will need for a while more.

Hope this helps people out there.