Galaxy Nexus Battery Life

[Caddyman]

right, battery calibration is important and can take a bit.

 

[aysiu]

The thing is lithium ion doesn't have a memory effect in terms of what it's capable of (with nickel cadmium, not fully draining the battery each time would actually shorten what the battery life was capable of physically). It does, however, require recalibration every month or so. It isn't good for your battery life in general to do frequent full drains on lithium ion. One close-to-full drain every 30 days is a good idea, though.

 

[blkbeltkid17]

The thing is lithium ion doesn't have a memory effect in terms of what it's capable of (with nickel cadmium, not fully draining the battery each time would actually shorten what the battery life was capable of physically). It does, however, require recalibration every month or so. It isn't good for your battery life in general to do frequent full drains on lithium ion. One close-to-full drain every 30 days is a good idea, though.

Or if you rooted you can reset your batt stats via recovery

 

[aysiu]

Or if you rooted you can reset your batt stats via recovery

According to Dianne Hackborn, that doesn't do anything to improve battery life:

Today's myth debunking:

"The battery indicator in the status/notification bar is a reflection of the batterystats.bin file in the data/system/ directory."

No, it does not.

This file is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the "Battery Use" UI in settings.

That is, it has deeply significant things like "app X held a wake lock for 2 minutes" and "the screen was on at 60% brightness for 10 minutes."

It has no impact on the current battery level shown to you.

It has no impact on your battery life.

Deleting it is not going to do anything to make your more device more fantastic and wonderful... well, unless you have some deep hatred for seeing anything shown in the battery usage UI. And anyway, it is reset every time you unplug from power with a relatively full charge (thus why the battery usage UI data resets at that point), so this would be a much easier way to make it go away.

 

[blkbeltkid17]

According to Dianne Hackborn, that doesn't do anything to improve battery life:

no it does not improve anything i know but what it does it keeps you battery monintering widgets nice and accurate so it will not report your battery drain wrong

 

[jkc120]

This is just my 2nd discharge cycle on this Nexus, but I'm pretty impressed. This is with the extended battery and with 4G on the entire time (it was on 4G probably 95+ % of the time).

Only a bit over 1.5 hours of on-screen time, but that's pretty typical of my post-honeymoon period usage.

 

[mntbighker]

I disabled calendar sync in my Exchange account and uncovered a glaringly obvious problem with ICS. My battery numbers have doubled, and the amount of green in the network active bar graph in battery is practically zero now. Prior to this change I would see a third to two thirds of the graph green and my battery was dead in 8 hours. Today I'm at 50% after 10 hours. So much for calendar reminders on my phone.

 

[blkbeltkid17]

This is why I don't use exchange

 

[jbdan]

I disabled calendar sync in my Exchange account and uncovered a glaringly obvious problem with ICS. My battery numbers have doubled, and the amount of green in the network active bar graph in battery is practically zero now. Prior to this change I would see a third to two thirds of the graph green and my battery was dead in 8 hours. Today I'm at 50% after 10 hours. So much for calendar reminders on my phone.

I've always believed the green was how strong your mobile/cell network connection is. Not activity. Are you sure it is activity?

 

[blkbeltkid17]

I've always believed the green was how strong your mobile/cell network connection is. Not activity. Are you sure it is activity?

Your right

 

[adjuster11]

I had same issue, switched to touchdown. Yes, it's $20 bucks but exchange now works for me, with no excessive phone battery use.

Radios also sketchy. I got much better signal on my old berry way out in the woods.

I have days where I don't touch the phone all day and it's dead in 8 hours. And I have days when I don't touch the phone and it is at 40% after 8 hours. On the bad days it is clear the Mobile Network Signal has kept the phone from sleeping. It's solid green pretty much all day. I used all the same settings and rebooted the phone in the morning. I have WiFi most of the day. Something is going on I seem to have no control over. I'm wondering if it's the Exchange account so I guess the next thing is to kill that, but of course that is pretty much the only reason to carry the phone.

 

[blkbeltkid17]

Sense I have gotten my zoom back my nexus battery life has gone up exponentially lol

 

[ANewDay]

This is just my 2nd discharge cycle on this Nexus, but I'm pretty impressed. This is with the extended battery and with 4G on the entire time (it was on 4G probably 95+ % of the time).

Only a bit over 1.5 hours of on-screen time, but that's pretty typical of my post-honeymoon period usage.

That is not so great. I get over 3 hours screen time with 4G on the stock battery.

 

[jkc120]

That is not so great. I get over 3 hours screen time with 4G on the stock battery.

Irrelevant. The battery life I get is good for me. And unless you live in the exact same place I do, with the same commute, same location in my building, etc, who are you to say it's "not so great"?

I'm in a marginal signal area all day and night, so I'm sure my 4G battery drain is MUCH worse than yours. You can't compare one person's battery life to another's. There are just too many variables in play, such as their usage habits, screen brightness (or auto vs. no-auto), cell coverage, etc etc.

 

[blkbeltkid17]

I am in a 4g area and my signal is at -110dbm and -120dbm is no signal so mine sucks and the battery drain is horrible but I still get better life on 4g then I do on wifi

 

[mntbighker]

I've always believed the green was how strong your mobile/cell network connection is. Not activity. Are you sure it is activity?

All I know is I see mostly gold on the days I get 14+ hours of battery. On the days I get 8 hours of battery the graph is mostly green. And turning on ANY kind of Exchange sync at any interval I get barely 9 hours battery and the graph is mostly green. Turning off Exchange the phone gets a chance to sleep and the graph is mostly gold.

 

[blkbeltkid17]

Is the gold on 3g? That would make the battery last that long on the standred battery

 

[mntbighker]

Is the gold on 3g? That would make the battery last that long on the standred battery

The issue isn't 3/4G, the issue is Exchange keeping the phone from sleeping. I spend most of the day with barely any cellular signal at all and strong WiFi. The color of the graph in my case is solely determined by Exchange keeping the phone awake. I don't know why it happens that way but it is the behavior.

 

[streetfish]

The issue isn't 3/4G, the issue is Exchange keeping the phone from sleeping. I spend most of the day with barely any cellular signal at all and strong WiFi. The color of the graph in my case is solely determined by Exchange keeping the phone awake. I don't know why it happens that way but it is the behavior.

I think the colors somehow correlate to 3g/4g and signal strength but im not sure how. green definitely does not mean 'active' I have lots of green and no activity at all in some spots. I think green may be 4g, gold 3g, and red no signal. The different shades might relate to the strength of the signal. the header says 'Mobile Network Signal' so it is signal related, but i just dont know how exactly.

 

[jkc120]

I think the colors somehow correlate to 3g/4g and signal strength but im not sure how. green definitely does not mean 'active' I have lots of green and no activity at all in some spots. I think green may be 4g, gold 3g, and red no signal. The different shades might relate to the strength of the signal. the header says 'Mobile Network Signal' so it is signal related, but i just dont know how exactly.

I don't think green means 4G. I think the colors are purely based on signal level, because I was on 4G most of the day, but in a poor signal area in my building at work and it showed yellow/dark yellow not green.

 

[blkbeltkid17]

Yeah it does I know mine is yellow when I am at home with barely any signal and when I am out and about it is green when I have a 4 bars of signal

 

[vasilator]

This is just my 2nd discharge cycle on this Nexus, but I'm pretty impressed. This is with the extended battery and with 4G on the entire time (it was on 4G probably 95+ % of the time).

Only a bit over 1.5 hours of on-screen time, but that's pretty typical of my post-honeymoon period usage.

Screen on for 1.5 is very little. Just for a comparison the I-phone 4s users were complaining about the battery draining with less than 4hrs. of screen time.

Apples to Oranges I know but I just find it interesting hearing Android users take on what is and what isn't good battery usage.

It's all over the map.

 

[mortist]

The issue isn't 3/4G, the issue is Exchange keeping the phone from sleeping. I spend most of the day with barely any cellular signal at all and strong WiFi. The color of the graph in my case is solely determined by Exchange keeping the phone awake. I don't know why it happens that way but it is the behavior.

I believe I am having a similar issue- Sometimes my phone will easily pass 15-18+ hours, while others it seems to die within 10 with the same use.

I show 2828 WakeLock alarms for com.google.android.email (sometimes this is not present)

Using BetterBatteryStats I noticed this, however I'm uncertain how to continue:

 

[aysiu]

I don't know why the forums limit the height of attachments to 280px, so I've rotated it sideways.

I do okay. I use a Juice Defendery kind of Tasker profile.

 

[blkbeltkid17]

I don't know why the forums limit the height of attachments to 280px, so I've rotated it sideways.

I do okay. I use a Juice Defendery kind of Tasker profile.

Humm I have that I was wondering if I should try it with the nexus ... what kinda of settings do you have on for it