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Expected battery life of DHD ?

I really like specs of DHD it seems to be really great phone. Even if it lacks AMOLED display I still think that it would be phone arround. 4,3" display should be big enough to do light work on it which would include lots of browsing, emailing etc. I just wonder what do you expect from 1230 battery? I am still sticking to my very old but precious HTC Touch Diamond which is painfully slow and battery last only like 12 hours while I am using. So with all "improvments" (better cpu tech, older display and Android 2.2) battery life should be at least as good as EVO ? Thanks a lot for your opionions
PS I know that nobody will be sure until we get hands on DHD but at least we have something to chat about until we get final release date

The same DHD ROM on HD2 with base WM ROM optimizations gets me 1.5 day worth and its not running Android directly from the phone yet.
So I would guess it will be 1-2 days with medium-heavy use

x
Cool that would work for me Just wonder why EVO battery life is short? 4G drains more energy than 3G?

Not sure of 4G but rest is like this -
GSM : More Talk/Use time & Lower Standby Time
3G/HSDPA : Lesser Talk/Use time & Higher Standby Time

Hey guys, what do you think the battery life would be without 3g on? I dont have a data plan, and dont plan to get one (yet?), so i'll be using wifi for data. So with 3g off, and data roaming off, and even wifi off, what would u expect the battery life to be with moderate-heavy usage?

SupremeBeaver said:
Hey guys, what do you think the battery life would be without 3g on? I dont have a data plan, and dont plan to get one (yet?), so i'll be using wifi for data. So with 3g off, and data roaming off, and even wifi off, what would u expect the battery life to be with moderate-heavy usage?
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I think HTC lowering the size of the battery is a big indicator that the battery will definitely last you 1 day of heavy usage... I think if they was worried about the battery life they would have stayed with the 1400..
JD

JupiterDroid said:
I think HTC lowering the size of the battery is a big indicator that the battery will definitely last you 1 day of heavy usage... I think if they was worried about the battery life they would have stayed with the 1400..
JD
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They are using unibody design for DHD that could be also reason since EVO has classic design with removable back than I would think that physically bigger battery fits to it.

Appart from SE X10 I have never seen a smartphone of DHD, SGS, Desire etc. caliber to last more than 2 days max. Even the SGS (wich has 1500mAh) doesn`t last more than 3 days (that was the max I could get from it) although the battery is not the one that GsmArena guys used for testing, does who know about the controvers around the SGS battery know what I`m talking about. So, I don`t think it will do better than 2 days (max).

I wish at least as a marketing tactic, they should keep same size battery (1400 mAh) as Desire. It's really annoying to know you actually downsize in terms of battery while you are making a device upgrade.

eozen81 said:
I wish at least as a marketing tactic, they should keep same size battery (1400 mAh) as Desire. It's really annoying to know you actually downsize in terms of battery while you are making a device upgrade.
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From my understanding the DHD consumes less than the Desire, so even a downgrade in battery total capacity does not mean you will have less autonomy.

I hope htc gets this right, i am really worried about battery life with heavy use.. It will be more power efficient compared to the evo 4g because the 4g uses a 65nm batt + likely the screen consumes more + the 4g is a battery eater.. but still i think the battery could have been a little bit bigger say 1320mah or even 1400mah, I hope mugen power or seidio come with a battery @ around 1600mah they can make that, the legend(Unibody) can have a 1800mah battery instead of the 1300mah that gives around 30 to 40% longer battery usage time in practice!

We don't know how efficient the new chip is yet. We will have to wait for reviews. But like all modern smartphones, expect it to charge it everyday. (if you are a heavy user)

Scotchy49 said:
From my understanding the DHD consumes less than the Desire, so even a downgrade in battery total capacity does not mean you will have less autonomy.
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Maybe HTC is right about less consuming maybe not, we will see but at least there are many people who directly look up the battery capacity and it a downsized capacity may them prejudge and not to decide buy. I know this is not such a big probability but If I were CEo of HTC, I would definetely go with same size battery with Desire but declaration with "less consuming" compared to Desire.

eozen81 said:
Maybe HTC is right about less consuming maybe not, we will see but at least there are many people who directly look up the battery capacity and it a downsized capacity may them prejudge and not to decide buy. I know this is not such a big probability but If I were CEo of HTC, I would definetely go with same size battery with Desire but declaration with "less consuming" compared to Desire.
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i think they were forced into using that size, otherwise they would have to make the DHD fatter to fit in a bigger battery.

dont think so,
Keep in mind that the DHD has a completely new processor in it with a new GPU aswell!
tests have shown that the DHD is 2x faster then a Nexus one with android 2.2! This new processor probably uses alot less power, and thus a smaller battery would be enough for atleast 1 day.

DHD sports a bigger screen than desire. when screen is on, I 'd bet DHD would drain more, whilst it could be less energy-consuming when screen is off.

To end this pointless thread in a whip:
1: 45nm VS 65nm - you can make the maths. This alone will yield a hefty decrease in power usage.
2 (a): the (only) potential power usage increase might come from the 4.3" screen, although that remains to be seen. WIFI/BT are standard.
2 (b): in order to decrease 2 (a), disable auto brightness and set a static, lower level.
3: Another contender for battery usage might be HTC's framework+apps+services. Once you get rid of the unnecessary, you'll save quite a bit of power. Once you get recovery and use an AOSP build (I HATE SenseUI), this will further decrease power usage.
4: In order to further tune the power scaling, use an UV/OC kernel + proper scheduler ammendments (once HTC posts the source on the dev site). You can tweak the latter with in the meantime with temp. root and a user script targetting /sys values.
I guess that should cover the basics.

adwinp said:
4: In order to further tune the power scaling, use an UV/OC kernel ....
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hey man..there are rumors spred about new chips on board from sandisk with lock on nand. there's a chance that hd2 will be as u unbox, for a long time. just hope it could be possible to undervolt the same kernel provided from htc.

Or maybe not, everything has a weakness, even the lock on nand we will just have to wait...

battery life vs. battery voltage

i have some thoughts on battery life that id like to share.
our batterys are a " 3.7v" Li-Io.
a typical 3.7 li-io shuld have the folowing voltages...
4.2-4.25 fully charged
3.7v " nominal " charge
3.2v " sag" (voltage mesured when a nominal battery is hit with full rated discharge amperage)
3.0v discharged
2.5v the protection curcuitry kicks in
what ive been seeing on my vibrant is
4.24v @ 100%
currently im at 9% @ 3.709v
im projecting it to die @ 3.700v ie the " nominal " voltage
we are missing out on over half our battery potential.
i remember back in the G1 days when cyanogen lowered the shutdown voltage. i dont recall the values, but it helped.
now, i dont know if this is handled at a kernel level, or in the rom or what.
ive been doing experiments on my wife's hd2 running android, and seen great battery life even with it only having a 1200mah battery
it see's a full 4.2-3.0 discharge cycle
yes i know its diferent hardware, but the battery technology is the same, but we have a larger battery.
theres alot of talented dev's here, i doubt it'll take to long to find a solution to the early shutdown so we can finaly see full battery life.

Definitely sounds like there will be a viable solution to this. I don't know much of what you are talking about but i fully understand it. Cant wait for a solution.
Sent from my SGH-T959 using XDA App

there is a great app that i know MacnutR12 supports that you can find here
http://forum.xda-developers.com/showpost.php?p=8908951&postcount=178
you can change all the voltage, although i dont know if its how youre saying, you can play around with it and see how it goes.

ludachez said:
there is a great app that i know MacnutR12 supports that you can find here
http://forum.xda-developers.com/showpost.php?p=8908951&postcount=178
you can change all the voltage, although i dont know if its how youre saying, you can play around with it and see how it goes.
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um, no....
thats for reducing cpu voltage.. ie: undervolting...
im talking about actualy useing the battery's full potential rather than pretending its dead when it realy has 60% left.

t1h5ta3 said:
um, no....
thats for reducing cpu voltage.. ie: undervolting...
im talking about actualy useing the battery's full potential rather than pretending its dead when it realy has 60% left.
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Ah, ok. like i said it might not be what youre looking for...and i learned something

It is probably done this way to conserve battery life expectancy. I remember reading somewhere that unlike the old nickle based battery, Lithium ions likes to remain stimulated, as it likes to carry active charge and be topped off when ever possible. Oppose to discharging it completely and then recharge the battery. So at 3.7v vs 3.0v, you don't have the battery completely drained so that in long term it doesn't ast at least 2 years like the specification stated (2 years, drops capacity to 80% if battery is well taken care of, ie topped off when ever possible, modest temperature, humidity, etc.)
I am no battery expert just what I though might be the reason.

As stated above, this is done to increase the life of the battery. A LiIon battery can only be power cycled so many times before it looses too much capacity to be used any more. By not fully draining (or fully charging) the battery you are able to get more cycles out of it. Here's more info.
Of course if you figure out how to change the set levels, you will get more time per charge, but you might have to buy a new battery sooner.

I'd be willing to trade increased usage time for battery life span especially seeing as they are so cheap now a days. I'm not a dev or anything but it would seems like the problem is software related not hardware. I've been through 5-6 ROMs all with horrible battery life until installing Macnut R11 and suddenly getting almost double what I was getting before. Changing the battery voltage for better life per charge would be icing on top of the cake though.

right, i understand that for optimum longevity they recomend staying between 40-60%.
we currently are well above that, we are in 100-80% range. 3.7v is the nominal voltage and we are useing that for shutdown voltage. so basicly we are draining the surface charge of the battery as it comes off the charger.
think of it another way: a 12v battery in our car, is it realy dead when it drops to 12v? no.... if i recall, 10.2v is considered dead. and most batterys sit at about 14v just after you turn your car off.. ie: just off the charger...
heat is the primary killer of a li-io battery. more so than discharge cycles. ie: constant heat generated durring charge cycle does more damage than the cycle its self.
so if we are currently only useing the 100-80% range, and we were able to unlock the full 100-0% range, our run time would be greatly extended. the typical user probably charges over night, and durring the day if they think there going to need a top off. thats to charge cycles in 1 day.
lets say @ current useage you get 8 hours use, if we were to unlock the full capacity, we could get an easy 24hours of use, therefor kill the need to have a mid day charge cycle. the overall life span would increse not only due to the number of charge cycles, but also the heat cycles.
this would also make it easyer to stay in the optimum 60-40% range (we cant even drop to 60% right now) providing even better battery life....
i can see if samsung had chosen 3.5 or 3.2v for shutdown, those values would have goten awesome life. once again, it seems that samsung engineers just throw stuff at a wall and run with what ever sticks... hmm... the battery says 3.7v, i guess thats when its suposed to be dead?

Wow this is an interesting thread!
+10000000
Sent from my SGH-T959 using XDA App

I think a dev should take a look at this , this can be a great breakthrough!
Sent from my SGH-T959 using XDA App

On the vibrant, where is battery percentage calculated? Within the Kernel? Or is solely in hardware? What determines @ what voltage the battery should shutdown?

From what i can tell battery level is set in "mBatteryLevel" And that is set in the Status.java file. ( hxxp://android.git.kernel.org/?p=platform/packages/apps/Settings.git;a=blob;f=src/com/android/settings/deviceinfo/Status.java )
But there is other stuff going on that i have no idea about...

I'd really like something to come of this. Like you guys, I'm sick of not getting a full day out of my battery. Bumping for great success!
Sent from my Samsung Vibrant using the XDA app.

Hmmm... my phone seems to die at 3.2v. Not sure why yours is shutting off prematurely. Wipe batt stats?
Sent from my SGH-T959 using XDA App

.......i can already hear the *****ing and the menstral cramps from the noobs.. They want 1.6 GHz kernels just to have bragging rights against G2 owners w/ 439565653 hour battery life too. Also the vibrant SAMOLED display brilliance isnt pretty for free, that sucks up most of the batter right there dont believe me, check ur batter stats ureself. u c HTC, Moto dont have a screen like this right now in the point of time for a reason. cant have both, It dont work that way...Just like You cant have a 1700 HP V24 engine and want 55 MPG out of it too...if this is u then thats pure ignorance. Myself personally thinks its basically software headaches from samsung that cause diff problems (bloatware running in background). All the hardware is doing is what its told by the software. If the software says run random apps in background, it does it but at the expense of battery life.

Kubernetes said:
Hmmm... my phone seems to die at 3.2v. Not sure why yours is shutting off prematurely. Wipe batt stats?
Sent from my SGH-T959 using XDA App
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what rom/kernel are you running? ive seen 4.2-3.7 on every combo ive used, battery wiped etc. i have evn pulled the battery and done a deep discharge to 3.0v
boimarc89 said:
.......i can already hear the *****ing and the menstral cramps from the noobs.. They want 1.6 GHz kernels just to have bragging rights against G2 owners w/ 439565653 hour battery life too. Also the vibrant SAMOLED display brilliance isnt pretty for free, that sucks up most of the batter right there dont believe me, check ur batter stats ureself. u c HTC, Moto dont have a screen like this right now in the point of time for a reason. cant have both, It dont work that way...Just like You cant have a 1700 HP V24 engine and want 55 MPG out of it too...if this is u then thats pure ignorance. Myself personally thinks its basically software headaches from samsung that cause diff problems (bloatware running in background). All the hardware is doing is what its told by the software. If the software says run random apps in background, it does it but at the expense of battery life.
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wow, thank you... ? do you blow every thing out of perportion? nice rant tho....
personaly, i usualy get 12-16 hours with moderate use. so i wouldnt say that i get " poor battery life , esp with the early cut off voltage.

I'm running Onyx 3.1 with the Voodoo kernel. Currently at 54% at 3.779v
My problem is with the standby drain-- I'm consistently losing 3% per hour even when sleeping. For some reason this ROM spends a lot of time doing VM swaps. Tried lowering minfree thresholds in OLCF, but system is still way too active.
Sent from my SGH-T959 using XDA App

boimarc89 said:
.......i can already hear the *****ing and the menstral cramps from the noobs.. They want 1.6 GHz kernels just to have bragging rights against G2 owners w/ 439565653 hour battery life too. Also the vibrant SAMOLED display brilliance isnt pretty for free, that sucks up most of the batter right there dont believe me, check ur batter stats ureself. u c HTC, Moto dont have a screen like this right now in the point of time for a reason. cant have both, It dont work that way...Just like You cant have a 1700 HP V24 engine and want 55 MPG out of it too...if this is u then thats pure ignorance. Myself personally thinks its basically software headaches from samsung that cause diff problems (bloatware running in background). All the hardware is doing is what its told by the software. If the software says run random apps in background, it does it but at the expense of battery life.
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Actually, I rather like my 1ghz. I underclock to 600/800 to try to conserve battery where possible and my phone runs just as smooth as it does at 1ghz.
Sure a little OC doesn't hurt, but really what's the point right now? There are no "practical" apps out now that demand more than 500mhz, and you can still do more than enough multi-tasking.
So instead of sounding like a pretenteous asshole, either contribute to the topic or shut the hell up.
Now then, I wanted to ask about the possibility of an extended battery for the Galaxy. Something with more amperage perhaps?
Sent from my Samsung Vibrant using the XDA app.

Kubernetes said:
I'm running Onyx 3.1 with the Voodoo kernel. Currently at 54% at 3.779v
My problem is with the standby drain-- I'm consistently losing 3% per hour even when sleeping. For some reason this ROM spends a lot of time doing VM swaps. Tried lowering minfree thresholds in OLCF, but system is still way too active.
Sent from my SGH-T959 using XDA App
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corect me if im wrong, but you shuldnt run one click with vodoo ...

about overclocking

just a question on overclocking, on a computer if you overclock it, it can cause cause a shorter life span on the processor because of the extra heat, is there any ill effects to the vega by overclocking it?

Overclocking always carries a risk (the manuafacturer wouldn't randomly underclock your CPU for no reason unless there called Apple ofc) the vega is very stable at the speeds it is so far possible to reach however when I ran mine at 1.4ghz I noticed a slight warmth from the device battery will be shorter lasting ofc as well running the vega up to 1.2 is very safe in my opinion 1.4 or 1.5 carries a very small risk
typed by using my vega as a tennis racquet

adding to bob's answer.
considering the current life span of mobile electronics I really wouldn't worry!
Yes, the processor on it, instead of lasting 25 years before burn n die will last only 23 years.. so don't worry!
Battery wise as well, instead of giving you 4 years of good life than an extra 2 of crappy life, it will be 3 years of good life!
remember.. ALL THOSE NUMBERS I said are purely guessing and have no scientific base!! They are for illustration purposes only.
fact is: in 3 years time you'll already have bought a n-videa core 8 based device that the screen is as thin as a piece of 300grm paper.
so conclusion: I wouldn't worry and enjoy the benefits of overclocking. But it's your decision!

thanks for the answers guys

n-videa core 8 based device that the screen is as thin as a piece of 300grm paper.
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I so want one of those!

geekyhawkes said:
I so want one of those!
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me too, I'm looking forward for the future to happen!

[Q] battery life comparison exynos vs snapdragon?

Are there any comparisons of the two cpus available on the s4 when it comes to battery life? Thats the only reason for me to try to get an exynos version if its shows to be better in that respect.

Yeah, that's a good question I want to know the answer too, there are many people having testing devices but they are too hungry about testing the damn processor and gpu instead testing properly the battery life. -_-

demlasjr said:
Yeah, that's a good question I want to know the answer too, there are many people having testing devices but they are too hungry about testing the damn processor and gpu instead testing properly the battery life. -_-
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Lord knows battery Life is very important to me.

the guy that's testing whatever people tell him to test said that when his battery got down to 30% it lasted like 3 hours with max brightness and benchmarks running

frankyy714 said:
the guy that's testing whatever people tell him to test said that when his battery got down to 30% it lasted like 3 hours with max brightness and benchmarks running
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With wich cpu? Also no comparison to the other version mentioned here.

I'm not convinced, even with S3 you can spend all the battery juice in 3 hours if you want. To do a proper test you need to leave the device doing the same job like an Snapdragon S4 during the same time.
Sent from my GT-I9300 using Tapatalk 2

Octa has a longer battery life than SD600.
That's why samsung used 8 cores technology.
And by the way the 5inch HD screen saves power too for both version
Sent from my GT-I9300 using xda app-developers app

HMJ-q8 said:
Octa has a longer battery life than SD600.
That's why samsung used 8 cores technology.
And by the way the 5inch HD screen saves power too for both version
Sent from my GT-I9300 using xda app-developers app
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Thaty what one hears, yes.
However I would like some actual test reports - for instance how long does the phone last for web browsing, for video playback and on standby?
I would like to see actual numbers.
As for the screen:
It is said to use 25% less power compared to previous amoled display generations. However that 25% value is something we have to trust samsung on I think, at least I have not seen any actual tests on power consuption of the display alone and it's probably not easy to test.
The way they have managed the display to consume less power is to use use phosphorescent instead of fluorescent green diodes, which use way less power. Until now they could not produce the green ones with an acceptable lifetime. The red ones have already been phosphorescent, and the blue one are still fluorescent since they are hardest to produce.
See here for some further details: http://www.phonearena.com/news/Sams...een-PHOLED-screen-tech-but-what-is-it_id40715

Hironimo said:
Thaty what one hears, yes.
However I would like some actual test reports - for instance how long does the phone last for web browsing, for video playback and on standby?
I would like to see actual numbers.
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This. This so many times over.
So many people are parroting the "Exynos will have better battery life" thing but this really remains to be seen.
If the better battery life is in exchange for crippled A7 performance at inconvenient moments then it's useless. If better battery life isn't available for when you're using intensive apps then it's also useless.

Thinking of getting this tablet-could you post battery stats?

Hi guys.
I'm making a decision between this and the Samsung galaxy tab s 10.5 .
It seems that the battery life on the sony is actually much better than the samsung despite the samsung having a greater capacity. Could somebody please post up some stats from the real world usage of the sony? I'm thinking total screen on time, total battery life, time between charges.
Thanks!
Mark

pingtiao said:
Hi guys.
I'm making a decision between this and the Samsung galaxy tab s 10.5 .
It seems that the battery life on the sony is actually much better than the samsung despite the samsung having a greater capacity. Could somebody please post up some stats from the real world usage of the sony? I'm thinking total screen on time, total battery life, time between charges.
Thanks!
Mark
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I will not have less than 5% battery till 2 days or so. But I can tell you for now that watching movies, a full charge last 11 hours.
Enviado desde mi SGP512 mediante Tapatalk

Look in the tweak for more battery time thread a few down from this one. I posted mine in detail.

Considering the capacity of the battery, the battery life is outstanding. For example when the tablet is idle it uses virtually no battery, games and movies will see it drop but not at a fast rate, it would defo see you through a day of hard labour. This is why sony stuck with the quad core, and the very beautiful screen. Having looked at the samsung galaxy s with their superior resolution and octa core, Im glad I went with sony, as looking at the threads over on xda people are not happy with battery life, and they are complaining about lag in games, I guess the octa core era has not been totally settled

Hell. 4 cores is more than you need really! Especially in Android. It's not even really used fully in a much more complex os like windows!

BS. 4 cores is saying nothing about the capability of a device.
There are plenty of laggy, slow phones and tablets with 4 cores out there.

I think that the number of cores is less important than the actual day-to-day handling of a device.
I am trying to make a decision between the two best devices here, and the Samsung has double the number of cores. This is irrelvent if software and hardware implementation means a slower actual experience than a device with half the processor cores.
Or indeed a longer-lasting device with a ~30% smaller battery capacity.
I've seen the battery thread mentioned in the reply above- thanks for that.
Can anyone else post their screen-on time or general impressions of battery duration?
Thanks

pingtiao said:
Hi guys.
I'm making a decision between this and the Samsung galaxy tab s 10.5 .
It seems that the battery life on the sony is actually much better than the samsung despite the samsung having a greater capacity. Could somebody please post up some stats from the real world usage of the sony? I'm thinking total screen on time, total battery life, time between charges.
Thanks!
Mark
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6 hours of Hulu over vpn is good enough for you?

hasenbein1966 said:
BS. 4 cores is saying nothing about the capability of a device.
There are plenty of laggy, slow phones and tablets with 4 cores out there.
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My point wasn't that because a device has 4 cores it must be good. I have two Rockchip 4 core devices that are not fast! My point was that octa core is complete overkill as even with 4 cores they are barely ever all used.
On an additional note: I know that the point of the Samsung octa cores is that they can run on the lower freq cores for low Intensity processes for improved battery life, but our 2.3ghz cores can also run at a lower speed when more is not needed and although this may be slightly less efficient than the Samsung 1.3ghz cores, I would still choose the Sony any day on cpu alone!

Duplicate post. Please ignore/delete.