Note 12.2 Battery Life

navjot singh said:

Why music app takes too much battery even when not used. ..I have not even played music for one time but it has eaten up 8 % battery..? Is there any way to stop it from running in the background?

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Duly.noted said:

Rom toolbox. You can set autorun permissions. Keep things from starting themselves

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+1 Autorun permissions will definately take care of that!

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---------- Post added at 09:09 PM ---------- Previous post was at 09:05 PM ----------

mozillaopera said:

The battery is good, if I dont use it, I just turn off to save battery. Otherwise i need to charge everyday (wifi on, sync, games, web, no sleep mode), now I can use few days in a row on single charge, depends on what I'm doing on it. This is not a smartphone/cellphone, so he dont need to be everytime on

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If you make a few correct system wide changes / adjustments, you wouldn't need to worry about having to turn off.
I get an average of 4 to 5 days standby with normal to moderate use.

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Its only ~1min to boot . But if you have time, you can post some settings

A full boot sequence can use more power than letting it sleep overnight

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mozillaopera said:

Its only ~1min to boot . But if you have time, you can post some settings

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Sure, I'm traveling at the moment, however when I reach my destination I can see about posting my settings. Be glad to help out if I can.

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---------- Post added at 02:25 PM ---------- Previous post was at 02:22 PM ----------

dodo99x said:

A full boot sequence can use more power than letting it sleep overnight

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Yup, This is absolutely true. Been there, and tested that.

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I charge every night and it last a business day without problems.

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So, I charged my battery to 100% last night to do a battery test this morning. I have all my notification options off except for wifi, reading, and power mode. I used the battery guide posted for the 10.1 http://forums.androidcentral.com/sa...-life-how-youre-being-robbed.html#post3248366. I used a youtube video https://www.youtube.com/watch?v=R0x7ZsTioCQ (supposedly at 1080) and these are the results that I got at the 50% marker


Not sure how some of you are getting such insane battery life. I I double that I would get around 8 hrs and 20 minutes or so. Something wrong with my battery? I'm on power save and auto brightness. That's 8 hrs and 20 min on screen time I should just clarify

I got around 8 hours too with brightness set to about 60%, now I have brightness at about 30% and get 10 hours. I also have all samsung apps/features deactivated.

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@mikeakanice: I posted an edit to my post in your other thread on Android Central. Just want to reiterate exercising caution when looking at people's battery stats that they post. We're all different and we know that, and our subjectivity gets in the way of things sometimes. So when people post screenshots and claim battery life is great for them the subjectivity comes into play not only in what they perceived as good but in their perception of what their usage was like. Is heavy usage playing a YouTube video at max brightness for long periods of time? During that time if the video codecs are such that hardware acceleration assists and doesn't push CPU and GPU to max speed then perhaps not. Perhaps heavy should be a video game that does indeed push CPU and GPU to the breaking point and holds them there for hours on end. . . .

IMO what heavy shouldn't be is having the screen on for long periods while simply sitting there reading the screen 90% of the time. Sure, this seems to some as heavy but when others push processing speeds up due to other types of use compare themselves against a frequent browser/reader they're liable to feel as though they're missing the mark.

In the end unless our usage patterns keep CPU/GPU speeds at the same levels for the same durations and we use the same screen brightness throughout there's going to be differences in battery life between people. The key to comparing yourself to others claiming great battery life seems to be in trying to determine what their usage is and then seeing if that matches your own. If they don't provide enough information to make that determination then it's not worth getting caught up in their numbers. (Hint: you'll never find someone whose usage matches your own.).

How you could see in Pic; with heavy use - 6 till 10 hours
With light use nearly 3 days

For charging from 0 - 100% around 7 hours

daily use (last 7 days):



Used App for Pics: Battery Monitor Widget

battery life

Well those numbers some people are saying they have make my tablet look like broke right now I am using gsam to test and it seems in Web browsing with I suppose 50 % brightness I will get around 9 hours only so how people here got so many hours is making me worried I have a broken device with a bad battery ?

viannaf said:

Well those numbers some people are saying they have make my tablet look like broke right now I am using gsam to test and it seems in Web browsing with I suppose 50 % brightness I will get around 9 hours only so how people here got so many hours is making me worried I have a broken device with a bad battery ?

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why are you thinking that your device is broken?

most users here are getting between 8 and 10 hours...

Sent from my Galaxy NOTEPRO 12.2

zadigre said:

why are you thinking that your device is broken?

most users here are getting between 8 and 10 hours...

Sent from my Galaxy NOTEPRO 12.2

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well some people here if you go read say they get around 16 or even more... so 9 hours is nothing...
got me worried...
my old tablet lasts a lot more but it has a custom rom dont know if that has influence...

viannaf said:

well some people here if you go read say they get around 16 or even more... so 9 hours is nothing...
got me worried...
my old tablet lasts a lot more but it has a custom rom dont know if that has influence...

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No one in this thread said 16 hours...

16 hours of screen time is impossible to reach unless maybe if you disable everything (wifi and bluetooth) and put the brightness at the minimum.

Your device at 9 hours screen time is perfectly fine.

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temperature

zadigre said:

No one in this thread said 16 hours...

16 hours of screen time is impossible to reach unless maybe if you disable everything (wifi and bluetooth) and put the brightness at the minimum.

Your device at 9 hours screen time is perfectly fine.

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what is the temp of us tablet in normal use like web browsing ? I tend to get 33 c seems hot or is normal ?

viannaf said:

what is the temp of us tablet in normal use like web browsing ? I tend to get 33 c seems hot or is normal ?

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I don't know for my tablet... but 33C is not bad...

I can get about 15 hours of screen time with WiFi, gps and sync off, no SIMcard, brightness at 60%, most bloatware killed (as much as possible without root) whilst playing LOTR Trilogy in Diceplayer at 720p.

p905, Not rooted, Apex Launcher, no SIM.

Does anyone have any idea why I'm getting random battery drain with "Android System"?

I have frozen loads of things in TB but it still happens now and again. I've installed BetterBatteryStats but haven't a clue how to get any decent info out of it!

Keith

temperature

ShadowLea said:

I can get about 15 hours of screen time with WiFi, gps and sync off, no SIMcard, brightness at 60%, most bloatware killed (as much as possible without root) whilst playing LOTR Trilogy in Diceplayer at 720p.

p905, Not rooted, Apex Launcher, no SIM.

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I would like to know how hot u r tablets get I think mine gets too hot for my taste please let's share temperatures under different types of uses even when idle I get 28 c and sometimes when Web browsing I hot to 40 c what I think it's absurd never a phone or tablet I had got this hot so share u r experiences

Not sure I agree with 40c being absurd. That's just 104F, barely more than someone with a fever. .. I don't push my tablet hard but I hardly think that these are prone to higher heat than other devices.

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viannaf said:

I would like to know how hot u r tablets get I think mine gets too hot for my taste please let's share temperatures under different types of uses even when idle I get 28 c and sometimes when Web browsing I hot to 40 c what I think it's absurd never a phone or tablet I had got this hot so share u r experiences

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28ºC is a very normal temperature, depending on the ambient temperature.

It's currently 28ºC in my flat, and my tab(p905) has been idle for two hours inside a neoprene sleeve. BetterBatteryStats verifies it's been in deep sleep, no wakelock or rogue app. CPU-Z lists the battery temp as 38.2ºC. Idle.

I've put it in front of the fan, still in deep sleep, for 10 minutes. It's now at an idle of 30.6ºC. It'll stay at that level, considering the ambient temperature.

You need to understand, we're dealing with a 2.3Ghz Quadcore powerhouse (or an Octa) inside a plastic shell with no fans, no holes and no heatsink. Most phones don't contain hardware this powerful. The plastic is the only way it can drain off the heat, making it feel hot to the touch.

You should start worrying around 60ºC. It'll start slowing down around 65-70.

The safety limit on modern Lithium-Ion batteries is around 100ºC. (Because these devices are also sold in part of the world where the average daytime temperature lies well above 40, such as the UAE.)

When the device gets to a point where the temperature starts to approach dangerous levels, the device gives off a warning and automatically shuts down.