Database Users

Battery life is GREAT, until you use it?!

This is not another thread about battery life obsession. It's more about a curiosity.
I have my Evo tuned so that it has great battery life on standby. When I use it for anything--SMS, data, local apps--the battery drains very fast.
I know that data, CPU, and display are the major consumers, but...
I have a Nexus One, with also a 1Ghz Snapdragon, and almost exactly the same loaded apps. Same screen resolution, both on 2.2. Both have 1500mAh battery. The only difference is the display technology and radio (GSM/EDGE/HSPA vs. CDMA/1xRTT/EVDO).
When used equally, the N1's battery does not drain nearly as fast as the Evo. How come? I know AMOLED is supposed be more power efficient, but by that much? I know CDMA can be less efficient, but again, by that much?
- - -
Duh! Edited from Hummingbird to Snapdragon (got confused-I just picked up an Epic which has Hummingbird). Thanks for correcting.

They both use Snapdragon, Hummingbird is Samsungs CPU codename, it's based on the same architecture but uses a smaller process.
What software are you running?

Same exact problem as OP...this baffles me.
Sent from my PC36100 using XDA App

Systemfraud said:
Same exact problem as OP...this baffles me.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Is it something new, or has this always been happening?
Was it after the new update or kernel WHATEVER, that you flashed?

If you’re running the stock kernel, do you think the fact that the screen is physically bigger may have something to do with the difference? I’ve always accounted the difference in the battery drain speed (between screen on and screen off) to the fact that most of us are running tweaked kernels that are overclocked when the screen on (with 5 point multi-touch, etc), and underclocked with the screen off.

The problem with battery life issues is that most of the time it can be just a perception and not scientific evidence at all.
Personally, I had an iPhone 3GS prior to getting an EVO and I would say the same exact thing happened with my iPhone. Especially when I was playing games. It doesn't seem to happen with my EVO.
Even seemingly silly things like the Battery Icon can help with the perception that battery life on the phone is bad. Since it only has 4 levels, it kind of tricks your mind into thinking your battery is draining really fast. Try flashing this.
Scientifically, The difference in battery life running the same exact apps under the same exact conditions would be almost negligible between an Evo and a Nexus one. You could even test them side by side and see for yourself.
Also, some facts:
- CDMA 3G is LESS power hungry than HSDPA when actually using it. Heck, EV-DO even uses less power than CDMA 2G(1xRTT)! Wi-Fi uses even less, so use it whenever you can.
- There's a huge misconception that AMOLED Screens use a lot less battery than regular LCDs, but in fact, that's only when the screen is showing LOTS of black color. During a web browser session with lots of white webpage viewing, AMOLED has no Power consumption advantage over LCD.

Signal is a HUGE contributor. I get about 12 hours out of my battery 3-4 out of 5 bars. I went to the sand dunes and had 5 bars and my phone lasted 28 hours.

zeuzinn said:
Also, some facts:
- CDMA 3G is LESS power hungry than HSDPA when actually using it. Heck, EV-DO even uses less power than CDMA 2G(1xRTT)! Wi-Fi uses even less, so use it whenever you can.
Click to expand...
Click to collapse
there are some variables here - my router at home sucks, so I actually get better signal (and battery) with 3g and not wifi unless I'm in the same room as the router. Like the guy above me said, signal plays a huge part in it.
btw, were you really one of the few people that had an n-gage?

fachadick said:
btw, were you really one of the few people that had an n-gage?
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hahaha yeah. Still have it shoved in my closet, actually. I LOVED it.

zeuzinn said:
hahaha yeah. Still have it shoved in my closet, actually. I LOVED it.
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Click to collapse
Man that's a lot of phones...

Plancy said:
Is it something new, or has this always been happening?
Was it after the new update or kernel WHATEVER, that you flashed?
Click to expand...
Click to collapse
Seems like it's always been problem for me..
Sent from my PC36100 using XDA App

Plancy said:
What software are you running?
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Click to collapse
When I run Handcent, N1 uses about 20% less battery over ~400 messages. Browsing sees similar results. No exotic apps and I keep close eye of what is running/syncing in the background.
Plancy said:
Is it something new, or has this always been happening?
Was it after the new update or kernel WHATEVER, that you flashed?
Click to expand...
Click to collapse
I too, have seen this from day one, running all stock ROMs.
zeuzinn said:
The problem with battery life issues is that most of the time it can be just a perception and not scientific evidence at all.
Even seemingly silly things like the Battery Icon can help with the perception that battery life on the phone is bad. Since it only has 4 levels, it kind of tricks your mind into thinking your battery is draining really fast.
Scientifically, The difference in battery life running the same exact apps under the same exact conditions would be almost negligible between an Evo and a Nexus one. You could even test them side by side and see for yourself.
Also, some facts:
- CDMA 3G is LESS power hungry than HSDPA when actually using it. Heck, EV-DO even uses less power than CDMA 2G(1xRTT)! Wi-Fi uses even less, so use it whenever you can.
- There's a huge misconception that AMOLED Screens use a lot less battery than regular LCDs, but in fact, that's only when the screen is showing LOTS of black color. During a web browser session with lots of white webpage viewing, AMOLED has no Power consumption advantage over LCD.
Click to expand...
Click to collapse
On both phones, I have a % battery gauge. I use both phones in good coverage area and have observed them over weeks of use. I would use one phone for the day, do the exact same thing, use the other phone the next, and consistently see the N1 having 20-30% more battery at the end of the day. I'm thinking of loading "current widget" to see the drain rate between the two phones.
On the subject of radios: I have seen manufatures list longer battery life for EDGE vs. HSPA and the same for 1x over EVDO. Also I [think] usually see longer standby times for a comparable GSM/UTMS phone over CDMA (e.g., Touch Pro2 on GSM/UMTS vs. Touch Pro2 on CDMA).
When one says that EV is less power hungry than 1x, are we talking about a time-use comparison or efficiency? Example: 1Mb download, 1x takes, say, 1 minute, while EV takes 10 seconds. Yes, for that download, EV took less power. But if one were to have 1x & EV both running for one minute, which takes more power? I ask because I remember seeing EV transmitting at higher power than 1x.

Concerns about Xoom 4G upgrade (Verizon)

I have read some disturbing reviews about the Thunderbolt which is a 4G LTE Verizon phone. Although the phone itself sounds great, what concerns me are reports that the battery life is around 4-5 hours with 4G turned on.
So my question and concern is, once we upgrade the Xoom to 4G when available, are we going to be victims of the same poor battery life with 4G?

You're not required to have data connection on all the time. A toggle switch widget can fix the problem. Just turns it on when needed. But yeah I do agree that 4g and 3g will drain the battery.
Sent from my Nexus One using XDA App

I already keep my Xoom on airplane mode to disable all radios that I don't specifically activate. Seems to help with battery life. I downloaded some toggle Widgets to shortcut all the steps.
[sent with Xooming Android technology]

wang1404 said:
You're not required to have data connection on all the time. A toggle switch widget can fix the problem. Just turns it on when needed. But yeah I do agree that 4g and 3g will drain the battery.
Sent from my Nexus One using XDA App
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Click to collapse
That is not really a solution. Currently with my Xoom, I can be on Wifi at home and when I am out, 3G kicks in. I do not want to toggle a widget when I need data (which is always) as I am sure most other people will not want to do. My battery life is totally acceptable currently with 3G and no toggling on/off. So will the 4G upgrade cause the battery life to be cut in half or worse?

keitht said:
That is not really a solution. Currently with my Xoom, I can be on Wifi at home and when I am out, 3G kicks in. I do not want to toggle a widget when I need data (which is always) as I am sure most other people will not want to do. My battery life is totally acceptable currently with 3G and no toggling on/off. So will the 4G upgrade cause the battery life to be cut in half or worse?
Click to expand...
Click to collapse
I seriously doubt 4g will be much (if any) worse than 3g is now. The only way would be that you are on it more and keeping the screen on for longer times because it will RULE! lol

ghoticov said:
I seriously doubt 4g will be much (if any) worse than 3g is now. The only way would be that you are on it more and keeping the screen on for longer times because it will RULE! lol
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Just debating here but why do you think that? Why would Thunderbolt have a 4-5 hour battery life using 4G? You think that poor life is not 4G LTE related? And they have the luxury of swapping batteries which we cannot do with the Xoom.

I don't know how closely it is to sprint's 4g, but enabling 4g on my evo is a battery killer too. the good thing is that you can toggle 4g off and run in 3G mode. no need to disable data completely

madsquabbles said:
I don't know how closely it is to sprint's 4g, but enabling 4g on my evo is a battery killer too. the good thing is that you can toggle 4g off and run in 3G mode. no need to disable data completely
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Click to collapse
That begs the question,why get 4g if you have to manage it manually like that?

keitht said:
That begs the question,why get 4g if you have to manage it manually like that?
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Click to collapse
Keep in mind, that the 4g upgrade will be OPTIONAL and if you are seriously debating whether the upgrade will be worth it or not, then simply don't send it in for the upgrade! The less people to send it in (like you), would in turn mean faster return time for my upgrade! I personally don't give a damn about having to click a toggle switch when I want to download at crazy fast speeds!
Just my .02
I can also guarantee you that 4g will have a pretty noticeable impact on battery life. And to be perfectly honest with you, the HTC Thunderbolt (stock), even with 4g turned off, still has absolutely horrible battery life.

Instien said:
Keep in mind, that the 4g upgrade will be OPTIONAL and if you are seriously debating whether the upgrade will be worth it or not, then simply don't send it in for the upgrade! The less people to send it in (like you), would in turn mean faster return time for my upgrade! I personally don't give a damn about having to click a toggle switch when I want to download at crazy fast speeds!
Just my .02
I can also guarantee you that 4g will have a pretty noticeable impact on battery life. And to be perfectly honest with you, the HTC Thunderbolt (stock), even with 4g turned off, still has absolutely horrible battery life.
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Click to collapse
Your response is very defensive and that is not the purpose of my questions. I am looking for meaningful conversation regarding the possibity that a 4g upgrade will significanty reduce battery life on the Xoom. All speculation but something to talk about.

So what I can gather is more or less around what everyone says. Get your 4g upgrade but don't turn it on and stick to 3g unless you feel you need the speed bump. So nothing will change except you know you have your turbo button-widget (yes old school) available.
That is unless it will be stuck on 4g at all times but looks like that is a feature that is toggled by today's hardware not permanent yet due to battery capacities.
Sent from my DROID2 GLOBAL using XDA App

foreverinpanama said:
So what I can gather is more or less around what everyone says. Get your 4g upgrade but don't turn it on and stick to 3g unless you feel you need the speed bump. So nothing will change except you know you have your turbo button-widget (yes old school) available.
That is unless it will be stuck on 4g at all times but looks like that is a feature that is toggled by today's hardware not permanent yet due to battery capacities.
Sent from my DROID2 GLOBAL using XDA App
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Click to collapse
I am not one to complain without reason but I certainly hope this is not the case.

MY plan is to remove the dummy card right before shipping it out so I can put it back if I am unhappy with the battery life.

In theory, 4g should use less battery, not more. 3g chipset firmware is highly optimized, though, due to the technology having been around for a while.
It may be a few firmware revisions to hit minimum use for 4g, but it shouldn't use dramatically more than 3g.

The answer for this thread is simple. Yes 4G will use more battery power, that's the short end of the stick. If you live in a 4G area and don't need the speed boost and would rather save battery there will be a way to disable 4G and use 3G just like with the thunderbolt or evo
Sent from my Evo using Tapatalk

It isn't speculation. The evo has a long track record with 4g of a very similar type. 4g will be a battery hog. But I never use it on my evo unless I'm tethered or streaming. Otherwise I find 3g more than enough for most tasks. I will send my xoom in for the upgrade. But I don't activate it. I tether it to my evo. But yes it will be a battery hog. Whenever you use cutting edge technology they tends to develop the speed and reliability first and worry about power consumption last.

I work for Verizon and honestly rarely hear many complaints about the battery life on the Thunderbolt. Many of my customers get awesome battery life and we have 4g in my area. The LTE radio does consume more battery than 3g especially if you are downloading a large file or something. Another thing to consider is the Thunderbolt is like a big brother to the Incredible and that phone had HORRIBLE battery life. The Thunderbolt has a much larger screen, 4g, and does not have a very large battery. I don't see 4g having a huge impact for most people but for those that feel it helps there will always be a toggle widget or “turbo button” like someone said earlier. I will definitely be sending mine in right away...
Sent from my Xoom using Tapatalk

Ferradinho said:
I work for Verizon and honestly rarely hear many complaints about the battery life on the Thunderbolt. Many of my customers get awesome battery life and we have 4g in my area. The LTE radio does consume more battery than 3g especially if you are downloading a large file or something. Another thing to consider is the Thunderbolt is like a big brother to the Incredible and that phone had HORRIBLE battery life. The Thunderbolt has a much larger screen, 4g, and does not have a very large battery. I don't see 4g having a huge impact for most people but for those that feel it helps there will always be a toggle widget or “turbo button” like someone said earlier. I will definitely be sending mine in right away...
Sent from my Xoom using Tapatalk
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Click to collapse
Sorry but you either live in a nice vacuum or a bubble or a cocoon because EVERYONE I know with this phone (friends, foes and customers too) loves it to death but hates the battery life with 4g on, and by default there's no way to turn off 4g when not needed.
Had to root for some friends and show them the 4g LTE off widget that came out the other day. At least that helps.
As for the Xoom, even if you might not want to use 4g or sign up, still send it in to be done. Definitely will help with resale value down the road.

my friend has the thunderbolt and the battery sucks, and he isn't in a 4g area. Mr verizon rep is on a feel good drug, or something.

keitht said:
I have read some disturbing reviews about the Thunderbolt which is a 4G LTE Verizon phone. Although the phone itself sounds great, what concerns me are reports that the battery life is around 4-5 hours with 4G turned on.
So my question and concern is, once we upgrade the Xoom to 4G when available, are we going to be victims of the same poor battery life with 4G?
Click to expand...
Click to collapse
It's going to drain more then the cdma radio does, at least until the technology and the software support behind it is more mature. But that is to be expected with bleeding technology.
Also remember that part of the battery issues on the TB comes from the fact that people use it alot more then previous phones. Streaming data is alot more power intensive then just the comparable occasional usage their previous device saw. I have a TB and if I use the snot out of it then yeah I can kill the battery in a couple of hours. However if I am busy and use it like I used my D2 or DX then I can get through the day without having to recharge.
Also you can turn just the LTE radio off when you are not using it if you are that concerned
Sent from my Xoom using Tapatalk

Stock Jelly Bean Battery on 4G

Is anyone else having really bad battery usage on the new update?
I can get my battery to barely last 6-8 hours on a charge with light usage and texting. If i leave it overnight it is dead in the morning.
When i was on Ice Cream I can go to bed with it at 95 percent and wake up around 85 percent.
Any thoughts?

Disable Google now..
Sent from my Nexus S 4G using xda premium

noizy1234 said:
Disable Google now..
Sent from my Nexus S 4G using xda premium
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I did, but its still doing the same thing.

Nexus S just has bad battery life, period

I know but on ICS it was much better than Gingerbread, now on JB its even worse i'm just waiting for the new Nexus so I can leave Sprint and I'll stick to carrying 3 batteries.

CM10 battery life is way better than stock in my experience.
Sent from my Nexus S 4G using Tapatalk 2

remman said:
CM10 battery life is way better than stock in my experience.
Sent from my Nexus S 4G using Tapatalk 2
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I know but Ill wait until they have a stable version.

I updated about 2 days ago and I've been getting 4 hours of max battery life. A lot of this has to do with the fact that this is quite possibly the worst phone reception I've ever gotten. Sprint has always been bad, but not even Sprint could be this bad.
90 percent of the time I have either 0-2 bars. Wifi is also constantly dropping so that doesn't help either. I don't know what the deal is, but I've gotten tired of the Nexus S software always being subpar. I've been trying to root all day and I must be doing something wrong because I can't root.

reivax25 said:
I updated about 2 days ago and I've been getting 4 hours of max battery life. A lot of this has to do with the fact that this is quite possibly the worst phone reception I've ever gotten. Sprint has always been bad, but not even Sprint could be this bad.
90 percent of the time I have either 0-2 bars. Wifi is also constantly dropping so that doesn't help either. I don't know what the deal is, but I've gotten tired of the Nexus S software always being subpar. I've been trying to root all day and I must be doing something wrong because I can't root.
Click to expand...
Click to collapse
Mine the same way. Except Wifi works. Try using the fastboot method to root. Thats what i did:
http://nexusshacks.com/nexus-s-root/how-to-root-nexus-s-or-nexus-s-4g-on-ics-or-gingerbread/

3G Drain on Jelly Bean

Are we likely to see a fix for this? We know there is a problem with 3G drinking battery but how likely are we to see a fix. Solutions like disable 3G aren't viable for a lot of people, so I just wondered what peoples thoughts on this were.

Try changing your modem. You should see a slight improvement in battery life, nothing major but still better than nothing.
Sent from my GT-I9000 using Tapatalk 2

Yeah a modem did help but I still had a big problem. Are we likely to see a fix, I remember this being a problem with ICS which is why I reverted back.

Its not the modem. My phone stock uses the XXKG3 modem, and i have been using that on ICS and now into JB. Jellybean definitely has worse battery concerning 3G / H for some reason. I just barely squeeze a day out of mine.

Yeah, I was struggling to get even a day. I tried almost all of the Jelly Bean ROMs and they all suffered from the same problem. I really wanted to stick with JB, especially C-ROM because it was like a dream to use but on a good day I'd get about 7 or 8 hours maybe? I would always have to plug it in twice a day. Currently trying SauROM which is better but I'm starting to think that the best for battery life is genuinely a stock rom like JVS.

skezza said:
Yeah, I was struggling to get even a day. I tried almost all of the Jelly Bean ROMs and they all suffered from the same problem. I really wanted to stick with JB, especially C-ROM because it was like a dream to use but on a good day I'd get about 7 or 8 hours maybe? I would always have to plug it in twice a day. Currently trying SauROM which is better but I'm starting to think that the best for battery life is genuinely a stock rom like JVS.
Click to expand...
Click to collapse
with any rom I've got a day and 6 hours depends on usage

On Jelly Bean?

did you limited your speed to 3g or do you also use hsdpa? if you use hsdpa, give 3g a try i think the battery drain in 3g is a lot lower ... in my opinion if you are not downloading 3g is fast enough to browse or youtube.
for just instant messaging you can give 2g a try

2G isn't really usable on Three mobile.
I don't know how to limit to just 3G. But yes I normally use HSPDA. That said, we should be able to use it without draining our battery

I'm not getting any major battery drain here. I can last a full day on HSDPA and or WiFi.
Sent from my GT-I9000 using xda premium

Really?

skezza said:
Really?
Click to expand...
Click to collapse
Yup
Sent from my GT-I9000 using xda premium

if you will buy a strong battery 1800-1900 mAh, you will see the different

Yeah, that's the alternative. Bigger battery I guess.

skezza said:
2G isn't really usable on Three mobile.
I don't know how to limit to just 3G. But yes I normally use HSPDA. That said, we should be able to use it without draining our battery
Click to expand...
Click to collapse
You CAN limit to just 3G. You have to go to Advanced Settings or Galaxy S Settings (depends on a ROM) and go to HSDPA and put it to UMTS mode only. It'll switch it to 3G and will consume less battery
Sent from my GT-I9000

Helloworld294 said:
You CAN limit to just 3G. You have to go to Advanced Settings or Galaxy S Settings (depends on a ROM) and go to HSDPA and put it to UMTS mode only. It'll switch it to 3G and will consume less battery
Sent from my GT-I9000
Click to expand...
Click to collapse
in my opinion, thats the point, go to settings/advanced/RADIO in your case hsdpa + hsupa should be ticket, simply tick umts an you should notice, the changing radio icon in the status bar (no longer h, but 3g).
your 3g and hspa power consumption depends really strong from the signal strenght and in your phone is connected constantly or changes often. bad reception causes a large waist of battery power.

My guess is you have Google Now / Maps running in background which always uses your data.

darristan said:
My guess is you have Google Now / Maps running in background which always uses your data.
Click to expand...
Click to collapse
On slim 2.9, I found that removing G now, and turning off all location tracking increased battery life. Now I can get a day and about an hour/90mins of screen on time with data/wifi only on when using it. I suppose after more than 2 years of use on the one battery charging every day or more, there's only so much one can expect from a device and battery.

But isn't it recognized that this is a problem? The 3G Bug? Nothing to do with Google Now etc

theskymoves said:
Now I can get a day and about an hour/90mins of screen on time with data/wifi only on when using it. I suppose after more than 2 years of use on the one battery charging every day or more, there's only so much one can expect from a device and battery.
Click to expand...
Click to collapse
in my opinion thats not enough, do you mean 24 hours or 16 hours? could be a little more with 90 mins of screen time, but you shouldnt need more.
inverted apps can by the way help too, avoid white and light colours as background

Why is my battery time rubbish?

Looking at others screenshots, I am only having half what the crowd having.
This is not the case for the n4 only. I am talking about every single Android I had in the past.
Is something wrong with me or what I see in the screenshots is 10% brightness, all the services off and staring at a black screen for 8 hours?

People's usage varies. Some people listen to a lot of music. Some use navigation frequently. Some have Google Now running, while others don't.
That said, I use automatic brightness, get on XDA a LOT, make a few calls and texts, and talk to people on gtalk. I usually see around 4h screen on time. Could I get more? Yes. But I don't care enough.

calyxim said:
Looking at others screenshots, I am only having half what the crowd having.
This is not the case for the n4 only. I am talking about every single Android I had in the past.
Is something wrong with me or what I see in the screenshots is 10% brightness, all the services off and staring at a black screen for 8 hours?
Click to expand...
Click to collapse
Good signal reception in your area is key to battery life.

estallings15 said:
People's usage varies. Some people listen to a lot of music. Some use navigation frequently. Some have Google Now running, while others don't.
That said, I use automatic brightness, get on XDA a LOT, make a few calls and texts, and talk to people on gtalk. I usually see around 4h screen on time. Could I get more? Yes. But I don't care enough.
Click to expand...
Click to collapse
I used my phone heavily and the screen was on for the most part used Google wallet and did a lot of stuff on my phone and it still have some juice left.. Coming from a GS 2 this battery life is more than enough for me
Sent from my Nexus 4 using xda app-developers app

From 100%.. Quarter brightness level.
Sent from my Nexus 4 using Tapatalk 2

Because u own a nexus device with no replaceable battery and and and underpower battery. Google posing that they are giving u cheap phone. They took from u all the real things that we need and gave us what makes little difference.
Less storage so u will be using their cloud.
Not replaceable battery so after a year or less you instead of replacing battery by sending phone to service centre, buy their motorola X.
Sent from my GT-N7000 using xda app-developers app

qazibasit said:
Because u own a nexus device with no replaceable battery and and and underpower battery. Google posing that they are giving u cheap phone. They took from u all the real things that we need and gave us what makes little difference.
Less storage so u will be using their cloud.
Not replaceable battery so after a year or less you instead of replacing battery by sending phone to service centre, buy their motorola X.
Sent from my GT-N7000 using xda app-developers app
Click to expand...
Click to collapse
So little text, so many conspiracies..

Vangelis13 said:
Good signal reception in your area is key to battery life.
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Click to collapse
Yep, by far. Took the words from my mouth.

spooke said:
From 100%.. Quarter brightness level.
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Click to collapse
That, I can understand.
6 hours guys, I honestly have no idea how they manage that. When I turn on the screen, consumption jumps up to 600mah straight away. 2100/600= 3 hours + some minutes.
Btw I can literally see the cell tower from where I live. Reception is no issue at all.

calyxim said:
That, I can understand.
6 hours guys, I honestly have no idea how they manage that. When I turn on the screen, consumption jumps up to 600mah straight away. 2100/600= 3 hours + some minutes.
Btw I can literally see the cell tower from where I live. Reception is no issue at all.
Click to expand...
Click to collapse
List all the apps you have installed. Is Facebook one of them? Remove it.
Install betterbatterystats, check if some app(s) keeps your phone awake.

Way better if I don't use it much lol..
Sent from my Nexus 4 using Tapatalk 2

calyxim said:
That, I can understand.
6 hours guys, I honestly have no idea how they manage that. When I turn on the screen, consumption jumps up to 600mah straight away. 2100/600= 3 hours + some minutes.
Btw I can literally see the cell tower from where I live. Reception is no issue at all.
Click to expand...
Click to collapse
Seeing the cell tower means nothing if your phone isn't actually connecting to that cell tower.
Sent from my Nexus 4 using Tapatalk 2

Vangelis13 said:
Good signal reception in your area is key to battery life.
Click to expand...
Click to collapse
what he says. single most important factor. in my city it can last for 2 days, i have always 4 bars on hspa. when i visit my parents the reception goes down to zero or one bar. the phone is empty in a few hours just by sitting there.

What you need is faux kernel and under volt a little ... I'm on 3 hours heavy use atm at 52%
Sent from my Nexus 4 using Tapatalk 2

Mine sucks some what.
@1.8 GHz
But most of the time running on demand gov so in deep sleep
Sent from my Nexus 4 using xda app-developers app

If you're using the stock Email client(not Gmail), that might have something to do with it.
I found out, by using Elixir 2, that the Email client was pretty much constantly using around 20-30% CPU, even though it wasn't showing up in the battery stats. Once I stopped using the Email client(removed all accounts) my battery life improved a lot.