Is this battery life 'normal'?

[bthere79]

hi everyone,
i'm relatively happy with my Nexus 7 but I wish the battery lasted longer. Could you guys tell me if you think there's something unusual in the screenshots? Looks like the screen is eating up most of the battery life when the tablet is in use, however brightness is only at 40% so I have no idea how to address that? Is it just that the battery has deteriorated over the last two years and that's it?
Also what puzzles me is that I'm down 66% however the top 7 drainers only account for less than 30%, is there something else that is draining the battery that is not being shown?
Thanks

 

[dancing-bass]

The thing that confuses people about the Android battery log is how things are displayed.

There rest of the battery drainers are just beyond the screen - scroll down to see the rest. Also, battery use isn't based off 100% use. Of the 66% that's been used, the screen has used 20% of that 66% not 20% of the battery life itself.

I prefer GSAM Battery Monitor, it breaks things down even more under the "app sucker" tab to find out what's really eating up battery. Generally screen will be the top usage, and generally the OS will be not far behind. Try dialing back the screen brightness and reducing the screen-on time (1 minute, 2 max seems to be the best balance between usability and and battery life for me on the devices I've had. If there was an option for 45 seconds I'd use that)

 

[bthere79]

hi,
thanks for your response, however I don't think that's right. Battery stats are based on 100% in Lollipop at least as far as I can tell. Also can't scroll down any further, that's all it shows.
I tried battery doctor and BBS both with not much luck, will take a look at gsam, thanks.

 

[Golfdriver97]

As far as I know, dancing bass is right. Everything is still calculated the way he described.

 

[bthere79]

You're both wrong but never mind. Can anyone comment on my original question? Thanks a lot

 

[Double44]

You're both wrong but never mind. Can anyone comment on my original question? Thanks a lot

Easy there, dancing-bass is right.. you likely have a lot of 0.01-1.00% items in the list that Lollipop isn't showing you.. as you mentioned, you cannot scroll down to see any more information. Android is only displaying the top hitters, which in your case is not very helpful.

I have been using the GSam Battery Monitor app for months, replaced the stock stats altogether. If you don't have this app installed, you're missing out mate.. it will show you everything.

Battery stats are based on 100% in Lollipop at least as far as I can tell.

Battery life as long as I have known it, has always been measured by what has been used since the last charge, nothing else. If there is any evidence that suggests otherwise, you should give us your source.

 

[bthere79]

sorry again, but you are wrong, you can like each other's posts as much you like and patronise the newbie but you're still wrong

In Lollipop battery stats are not shown as percentage of what's being used anymore but as percentage of the battery overall, look at the attached screenshots. Screen 1% when 2% of battery was used, when gsam showed 60%. Must just be a coincidence.

I did install GSam and monitoring battery usage there at the moment. No one has actually answered my original question, just kept giving incorrect information, but whatever, thanks anyway

 

[Golfdriver97]

There is no mention of any major change on how battery remaining is calculated...

https://developer.android.com/about/versions/android-5.0-changes.html

https://developer.android.com/about/versions/android-5.0.html

What the new stats do is give a projected remaining time of battery use.

 

[bthere79]

Lol you for real? Have you looked at the screenshots?

 

[bthere79]

There are probably no changes to how they're calculated, only to how they're displayed.

 

[Golfdriver97]

There are probably no changes to how they're calculated, only to how they're displayed.

Which then makes the post by dancing bass correct.

 

[bthere79]

hahaha you guys are something else!

the lenghts you'd go to just not to admit you guys said something wrong!

The thing that confuses people about the Android battery log is how things are displayed.

you guys seem all very confused! at least you're giving me a giggle

 

[Golfdriver97]

hahaha you guys are something else!

the lenghts you'd go to just not to admit you guys said something wrong!


you guys seem all very confused! at least you're giving me a giggle

I will admit when I am wrong. I am just asking for what you are basing your conclusions on.

 

[Kevin OQuinn]

hahaha you guys are something else!

the lenghts you'd go to just not to admit you guys said something wrong!


you guys seem all very confused! at least you're giving me a giggle

Easy answer. Add up the items that ARE listed in your screenshots. Do they add up to 66%? No, they don't.

In the second set of screenshots, do those add up to 10%? No, they don't.

We're back to....ding ding ding. Dancing Bass is right.

You can disagree with me all you want. I have FAR MORE experience with Lollipop than you do.


To answer your original question, no, that doesn't seem like "long enough" battery life based solely on those screenshots. It is definitely possible the battery has deteriorated.

 

[bthere79]

LOL

again: have you looked at the screenshots i posted??

if i'm 10% down, and GSam tells me it's 30% screen, 30% kernel and 40% something else (TOTAL 100%), while stock battery stats tell me screen is 2%, system is 3% and a few more things are 4% (TOTAL 8-9%) then CLEARLY stock stats are showing percentage of total battery, and NOT percentage of used battery like it used to. It's really not that difficult to grasp, really.

 

[dancing-bass]

Well OP chances are good that your battery has deteriorated over 2 years. All batteries have a lifespan, and yours is probably getting close to the end. As far as "normal" that depends on what is your normal use. Normal varies between different usage patterns.

Is it noticeably worse? The no, it's not normal and something has changed. Maybe a rogue app, maybe a battery that's getting old.

And as for efficiency. The N7 2012 model has an LCD screen. AMOLED screens are more battery efficient, but not much you can do about that.

And as for you knowing more about Android then people who are trying to help you? You have 7 post counts. Once you hit 10 posts I eagerly await information from you that no one else has come across that proves Android is suddenly calculating and displaying battery life differently then how I've indicated.

Keep in mind this information you claim to know is going to be news to the entire Android community, world-wide. And only you know it

Am I being blunt? Perhaps. But I know I don't appreciate being blown off by people who ask for help then ignore the information given to them. I'm pretty sure GolfDriver doesn't really appreciate it either.

If our information isn't good enough, feel free to spend the time to dig up your own information on your own time with no help.

 

[bthere79]

Well OP chances are good that your battery has deteriorated over 2 years. All batteries have a lifespan, and yours is probably getting close to the end. As far as "normal" that depends on what is your normal use. Normal varies between different usage patterns.

Is it noticeably worse? The no, it's not normal and something has changed. Maybe a rogue app, maybe a battery that's getting old.

And as for efficiency. The N7 2012 model has an LCD screen. AMOLED screens are more battery efficient, but not much you can do about that.

And as for you knowing more about Android then people who are trying to help you? You have 7 post counts. Once you hit 10 posts I eagerly await information from you that no one else has come across that proves Android is suddenly calculating and displaying battery life differently then how I've indicated.

Keep in mind this information you claim to know is going to be news to the entire Android community, world-wide. And only you know it

Am I being blunt? Perhaps. But I know I don't appreciate being blown off by people who ask for help then ignore the information given to them. I'm pretty sure GolfDriver doesn't really appreciate it either.

If our information isn't good enough, feel free to spend the time to dig up your own information on your own time with no help.

thanks for the first part of the answer, i really appreciate (no sarcasm)

I'll ignore the second part of the answer completely, thanks.

 

[Kevin OQuinn]

LOL

again: have you looked at the screenshots i posted??

if i'm 10% down, and GSam tells me it's 30% screen, 30% kernel and 40% something else (TOTAL 100%), while stock battery stats tell me screen is 2%, system is 3% and a few more things are 4% (TOTAL 8-9%) then CLEARLY stock stats are showing percentage of total battery, and NOT percentage of used battery like it used to. It's really not that difficult to grasp, really.

Yep, did you do the same math I did? Your stock percentages don't app either. When it comes to stock numbers versus a third party app, I'll go with stock.

Are you rooted by chance?

 

[bthere79]

Yep, did you do the same math I did? Your stock percentages don't app either. When it comes to stock numbers versus a third party app, I'll go with stock.

Are you rooted by chance?

i'm rooted, so what?

you seem to have some difficulties with numbers. Total of contribution shown by stock is ALWAYS less than battery used in Lollipop, which proves my point. If that wasnt the case, the number should tend to 100%, it's really not that difficult.

 

[Kevin OQuinn]

i'm rooted, so what?

you seem to have some difficulties with numbers. Total of contribution shown by stock is ALWAYS less than battery used in Lollipop, which proves my point. If that wasnt the case, the number should tend to 100%, it's really not that difficult.

Do you have the root companion app for GSAM installed also?