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?
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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.
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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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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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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.
Related
curious to see what kind of battery life people are getting on average with their phones? im pretty happy with the life im getting but after reading what some other people are getting it puts mine to shame!
how many hours are you guys getting under how much load and which kernel/rom/mods do you have?
I too am interested in this.. maybe you could post your stats, I have no time atm.
My unrooted n1 battery is poor
unrooted N1, average use 3G, Wifi, some surfing, living wallpaper; about 5%/ hour -> 20 hours. Assume as acceptable, about one day of use; better than my Iphone used to be (worse than Hero 1.6 was)..
Mine is not rooted and the battery life is either less or on par with the iPhone. Only use beautiful weather widget as well as the default news one. It's relatively new so I'm hoping it improves after a few charges, definitely considering picking up another battery.
digital bliss said:
Mine is not rooted and the battery life is either less or on par with the iPhone. Only use beautiful weather widget as well as the default news one. It's relatively new so I'm hoping it improves after a few charges, definitely considering picking up another battery.
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you don't need another battery. just tune up your N1 correctly. Use either Wifi or 3g preferably when available. Use push rather than scheduled sync. Leave brightness down to minimum, you will only need more when you are outside.
Connections & screen usage take biggest part of your battery life.
I heard also some people who by pressing *#*#4636#*#* selected "WCDMA only" as preferred network so phone doesn't try to swap to 2g when there is no 3g. Changes between networks drain battery very fast. Let's say for example while traveling by car.
As well I have to say that last generation mobile phones have to be charged once per day. I consider that normal. Come on most of us play around, surf website, take pics and upload them to facebook, etc several times along the day.
I have the UV kernel and I think it does extend battery life. The first day I had it it lasted for 18 and a half hours with a fairly normal use: GTalk, browsing, camera, market downloads, gps, etc.
I do want to mention for those who are comparing their battery life to their iPhone's that there's nothing to compare, as there's absolutely no hardware equivalences. You just can't compare a 600MHz processor to a 1000GHz one, as well as larger and better screen, 256 vs 512MB mem, etc. I'd like to see what your battery life would be on your iPhone if you could plug in htc's battery.
Definitely not saying Apple is not good on batteries, just saying to read and check stuff before you make comparisons between devices.
St.Jimmy! said:
I have the UV kernel and I think it does extend battery life. The first day I had it it lasted for 18 and a half hours with a fairly normal use: GTalk, browsing, camera, market downloads, gps, etc.
I do want to mention for those who are comparing their battery life to their iPhone's that there's nothing to compare, as there's absolutely no hardware equivalences. You just can't compare a 600MHz processor to a 1000GHz one, as well as larger and better screen, 256 vs 512MB mem, etc. I'd like to see what your battery life would be on your iPhone if you could plug in htc's battery.
Definitely not saying Apple is not good on batteries, just saying to read and check stuff before you make comparisons between devices.
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Click to collapse
mmm..... i'm thinking to load some rom on my N1 but... which ones are the advantages of doing so? the mods?
St.Jimmy! said:
I have the UV kernel and I think it does extend battery life. The first day I had it it lasted for 18 and a half hours with a fairly normal use: GTalk, browsing, camera, market downloads, gps, etc.
I do want to mention for those who are comparing their battery life to their iPhone's that there's nothing to compare, as there's absolutely no hardware equivalences. You just can't compare a 600MHz processor to a 1000GHz one, as well as larger and better screen, 256 vs 512MB mem, etc. I'd like to see what your battery life would be on your iPhone if you could plug in htc's battery.
Definitely not saying Apple is not good on batteries, just saying to read and check stuff before you make comparisons between devices.
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Click to collapse
I don't want to compare hardware/ batteries, I am aware of all the differences.. But: I DO want to have a smartphone, which -at least- can go with for a day of usual use (calls, messages, internet) -at which point the Iphone just fails..
bmszabo said:
I don't want to compare hardware/ batteries, I am aware of all the differences.. But: I DO want to have a smartphone, which -at least- can go with for a day of usual use (calls, messages, internet) -at which point the Iphone just fails..
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then post your normal usage in mins/day for each thing and we would be able to tell you.
well i dunno i get a full days use out of my phone with maybe an hour or 2 or talk time and maybe 20 messages, syncing gmail 5 or 6 times, checking market, and a little bit of browsing. at the end of the day ill still have about 30% or so....im not complaining really but from what i hear from other people on the forums here their doing alot heavier usage and still at 70% or something. im just curious what is really making the difference, i dont have wifi, bluetooth, or sync on ever. but i keep my screen at full brightness always cause i love how the screen looks im running CM 5.5.3 and use setCPU.
I used a T-Mobile nexus one for awhile then sold it and bought an AT&T nexus one. The AT&T version is getting significantly less battery life than the T-Mobile one. I used the same AT&T service on both phones. I'm not saying it's necessarily a difference between the 2 versions, but between the 2 phones at least. I got probably 36 hrs. average on the T-Mobile version and maybe 18 hrs. average on the AT&T one.
maxh said:
I used a T-Mobile nexus one for awhile then sold it and bought an AT&T nexus one. The AT&T version is getting significantly less battery life than the T-Mobile one. I used the same AT&T service on both phones. I'm not saying it's necessarily a difference between the 2 versions, but between the 2 phones at least. I got probably 36 hrs. average on the T-Mobile version and maybe 18 hrs. average on the AT&T one.
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Let the battery break in.
blastik said:
you don't need another battery. just tune up your N1 correctly. Use either Wifi or 3g preferably when available. Use push rather than scheduled sync. Leave brightness down to minimum, you will only need more when you are outside.
Connections & screen usage take biggest part of your battery life.
I heard also some people who by pressing *#*#4636#*#* selected "WCDMA only" as preferred network so phone doesn't try to swap to 2g when there is no 3g. Changes between networks drain battery very fast. Let's say for example while traveling by car.
As well I have to say that last generation mobile phones have to be charged once per day. I consider that normal. Come on most of us play around, surf website, take pics and upload them to facebook, etc several times along the day.
Click to expand...
Click to collapse
Thanks for the tips. How good is auto-brightness for this phone? Would it be better to just set a low and a high profile for outside?
Stock rom. Heavy internet. 7 hours straight....
Or 3 full movies
Or all day using it normaly...
Brightness always almost all the way down, no updating widgets other than weather, no push email...
Very happy with it..
maxh said:
I used a T-Mobile nexus one for awhile then sold it and bought an AT&T nexus one. The AT&T version is getting significantly less battery life than the T-Mobile one. I used the same AT&T service on both phones. I'm not saying it's necessarily a difference between the 2 versions, but between the 2 phones at least. I got probably 36 hrs. average on the T-Mobile version and maybe 18 hrs. average on the AT&T one.
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Click to collapse
You were also probably getting significantly better battery life with the EDGE only of the tmobile one, on the ATT Network, than the now 3g enabled att nexus. You can force edge on the nexus one in the wireless settings, and switch it off if you are gonna be browsing the internet for a while, etc to try to get the most outta that battery.
strongergodzilla said:
You were also probably getting significantly better battery life with the EDGE only of the tmobile one, on the ATT Network, than the now 3g enabled att nexus. You can force edge on the nexus one in the wireless settings, and switch it off if you are gonna be browsing the internet for a while, etc to try to get the most outta that battery.
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Click to collapse
I tried edge only but didn't notice much of a difference.
Anybody heard anything yet about what the battery life is supposed to be like with this phone? I know when I came from the TP to the hero my increase in battery life was like night and day. I am wondering since this has a fast processor and more memory if the battery life will be less than the hero. It just seems to be a waste to have a phone with these kind of features only to be crippled by low battery life. I hope it isn't.
ElAguila said:
Anybody heard anything yet about what the battery life is supposed to be like with this phone? I know when I came from the TP to the hero my increase in battery life was like night and day. I am wondering since this has a fast processor and more memory if the battery life will be less than the hero. It just seems to be a waste to have a phone with these kind of features only to be crippled by low battery life. I hope it isn't.
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It is more than likely be less than the hero, it has the same size battery mah wise as the hero but the voltage req will probally be slightly higher, so that will mean larger physical size. As far as run time, 4g sucks more juice than 3G, snapdragon at full speed 1ghz sucks more down than the 528 MHz in the hero and the bigger physical screen will also need more power than the smaller hero screen, they both use LCD as apposed to amoled which is amazingly good on your battery. They could and probaly should have went with amoled in my opinion.
I can only speculate but the stock 1500mah battery will probally see an 3600 mah extended battery from seidio about 3-4 months after release, about double the physical size of stock battery and extended back protruding 2-3 mm from the back of the current thickness. The evo is a rather thin phone comparatively so that shouldn't effect it. They usually run around 60-70 usd.
I will definitely be getting one if what I believe is correct, but the only potential problem will be the kickstand, I'm currious as how hay are going to overcome that obstacle. My guess is you will have to sacrifice it like some other phones like the palm pre extended battery that made you get rid of the touchstone functionality. They are good at molding compatible plastic moldings, and great at the batteries themselves, but not so good at engineering anything else into it.
i am going to have to agree with the post above...
same battery cap as the Hero, but with everything bigger and needing more power to function...guessing there will be a lot of people that will be complaining about the battery life (including me!).
I think HTC needs to reconsider this before they release this phone to the market. I am sure they can put 1800-2000mah battery in there.
since we are comparing HERO and EVO... and that we know they will have the same kind of screen...
The Hero's screen is very tough and scratch resistant. I have seen and tested the durability of the screen and I love it!!!
Will the EVO's screen have they same awesome tough screen??
Dan330 said:
since we are comparing HERO and EVO... and that we know they will have the same kind of screen...
The Hero's screen is very tough and scratch resistant. I have seen and tested the durability of the screen and I love it!!!
Will the EVO's screen have they same awesome tough screen??
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yes it should, the hd2 has the same screen, and it's basically a hardware clone of that phone, very nice and tough. HTC has done very wise in going with the tempered glass, costs more, but definitely worth the added cost.
I heard the moto droid has an even tougher screen with their "gorilla glass" technology. I haven't seen one first hand so I can't compare, but after 2 face first drops from waist height with no screen protector, the hero's screen is as nice as the day I got it. I'm hopeing I can say the same for the evo once I get it, but I'm fairly confident it will.
hd2 tough screen video
There's a video out there somewhere of a guy hammering his hd2 screen with a key and not a scratch.
hd2 extended battery actually gave it the kick stand. I imagine the an evo extended battery will have one too.
I wonder if it will stand up on its own in the portrait orientation like my Mogul does (it has sort of a foot). Doesn't look like it from the pictures.
Manicmobileaddict said:
There's a video out there somewhere of a guy hammering his hd2 screen with a key and not a scratch.
hd2 extended battery actually gave it the kick stand. I imagine the an evo extended battery will have one too.
I wonder if it will stand up on its own in the portrait orientation like my Mogul does (it has sort of a foot). Doesn't look like it from the pictures.
Click to expand...
Click to collapse
No, but it does look like the kickstand might work with EVO in portrait or landscape orientation. We won't know for sure until we can get our hands on it.
Hero Battery life is crap.
On my Hero, I get about 3/4 a day's worth of battery... but that might because I am running rooted 2.1 on the device that is not optimized for my phone, but as long as the phone can get me through one full day on the device, I will be fine.
Manicmobileaddict said:
There's a video out there somewhere of a guy hammering his hd2 screen with a key and not a scratch.
Click to expand...
Click to collapse
Lol, people act amazed every time they see this done to a glass screen, and it makes me wonder just what they're being taught in science class these days. Glass is harder than the metal your keys are made from so of course it won't scratch. Same thing with razor blades and pretty much any other metal they throw it at in videos like these. What they don't show you is that sand will still tear your screen a new arsehole. Unless you live somewhere absolutely devoid of sand, this phone is still going to need a protector or a slip case.
I've never had problems with my screen getting scratched without a protector. Back on topic though I'm a little worried about the evo's battery life. I get great life on my hero but with all the added goodies I know the evo will get far less. Fortunately I'm rarely without a power source so unless it's totally horrible I'll deal with it.
Evo without 4G?
I live in an area without WiMax (for now), so do you guys think that if I don't have the WiMax radio on it will get at least a days worth of battery?
I read the Touch Pro 2 Battery will work on the EVO anyone know if that's true? I don't remember if numbers of it but I am wanting to say 1400 and i have an extra one that's less..
Rose4uKY said:
I read the Touch Pro 2 Battery will work on the EVO anyone know if that's true? I don't remember if numbers of it but I am wanting to say 1400 and i have an extra one that's less..
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The EVO uses a RHOD160 1500mAH battery... The battery commonly found in the TP2, I believe.
http://forum.xda-developers.com/showthread.php?t=677678
ihakr said:
I live in an area without WiMax (for now), so do you guys think that if I don't have the WiMax radio on it will get at least a days worth of battery?
Click to expand...
Click to collapse
Not having WiMax or having WiMax will have no significant impact on battery life at all. I have no idea what your phone use habits are so it would be hard to say if you'd get a day out of it or not.
Thanks, So even my generic extra would work then?
keatre said:
The EVO uses a RHOD160 1500mAH battery... The battery commonly found in the TP2, I believe.
http://forum.xda-developers.com/showthread.php?t=677678
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Click to collapse
Sebrina said:
Not having WiMax or having WiMax will have no significant impact on battery life at all. I have no idea what your phone use habits are so it would be hard to say if you'd get a day out of it or not.
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Click to collapse
Technically speaking, if you were to turn the WiMAX antennas off, you would increase battery life. The Evo offers the ability to connect to 4G and if not, then 3G... OR... Just 3G, thus turning the WiMAX antennas off.
Will this increase it significantly? Can't really tell you much yet.
Rose4uKY said:
Thanks, So even my generic extra would work then?
Click to expand...
Click to collapse
As long as your extra is a RHOD160 1500 mAh, you should be fine -- no worries.
keatre said:
Technically speaking, if you were to turn the WiMAX antennas off, you would increase battery life. The Evo offers the ability to connect to 4G and if not, then 3G... OR... Just 3G, thus turning the WiMAX antennas off.
Will this increase it significantly? Can't really tell you much yet.
As long as your extra is a RHOD160 1500 mAh, you should be fine -- no worries.
Click to expand...
Click to collapse
If you turned your 4G radio off your 3G radio would take over and I don't see a significant improvement there, now if you turned all data radios off you would definitely see an improvement but at what cost? You'd basically be carrying around a phone with no data capabilities.
I am not sure about the battery. I thought the touch pro 2 battery was the one that works in the hero. It would be surprising to find the hero battery working in the EVO although I would not complain.
Sebrina said:
If you turned your 4G radio off your 3G radio would take over and I don't see a significant improvement there, now if you turned all data radios off you would definitely see an improvement but at what cost? You'd basically be carrying around a phone with no data capabilities.
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Click to collapse
you can specify what type of connection in the stock image of sprint android devices. You can tell it 1x or evdo or auto, I would venture to guess they will have a similar option to disable 4g in areas it's not available in.
johnsongrantr said:
you can specify what type of connection in the stock image of sprint android devices. You can tell it 1x or evdo or auto, I would venture to guess they will have a similar option to disable 4g in areas it's not available in.
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Click to collapse
I think that turning the 4g radio off in areas with no 4g rather then leave it on would help battery life, thus it wouldn't be looking for a 4g network all the time
My one that came with the phone says RHOD160 1500 MAH . The generic one says 1400 mAh 3.7 V. And under the ID number it says HTC with numbers and letters. So will 1400 not work? Reason I am asking is one extra battery is all I will really need. I have this cradle that charges the extra battery now while my Touch Pro 2 is in the cradle/ But my friend is getting the same phone switching from a BB Tour. I said oh I don't need 2 extra batteries I'll give you one of mine which of course was going to be the generic one. But then I thought about buying back my phone to Sprint when I get the EVO which is 82 bucks. Almost as much as selling it for a 100.. So I don't know what to do yet..
As long as your extra is a RHOD160 1500 mAh, you should be fine -- no worries.[/QUOTE]
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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Click to collapse
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
Click to expand...
Click to collapse
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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Click to collapse
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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Click to collapse
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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Click to collapse
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...
Epic vs Evo battery differences
Something I noticed while having an Epic and Evo under one roof was that although they both last about the same length on a charge, the components using the juice vary greatly. Here’s is a breakdown of the most power hungry items arranged from most power usage to least:
Evo:
• Cell Standby (most power usage)
• Phone Idle
• WI-FI
• Android System
• Display
Epic:
• Display (most power usage)
• Cell standby
• Phone idle
• Android System
Initially I thought that the Epic’s AMOLED screen was WAY more power hungry than HTC’s LCD. But if that was the case I would expect the Evo to outlast the Epic on a charge which wasn't happening. Then it hit me. Samsung’s Hummingbird CPU/GPU is 45mn and is supposedly eating less power than the older 60mn Snapdragon processors. If true this could explain the reversal of the “Display” from being at the bottom to being at the top. I suspect the AMOLED does require more juice than HTC’s LCD but perhaps not as much more as I originally thought. What is likely going on is that the system components are less power hungry on the Epic but the screen is somewhat more power hungry. This could explain why Evo’s and their custom undervolted kernels see a big improvement in battery life, simply because the underlying cpu/gpu is using a larger percentage of the battery’s life.
The other noteworthy item, Wi-Fi was always in the middle of the list on the Evo but doesn’t even show up on the Epic even though Wi-Fi is always enabled. I have heard the Epic uses a newer low power Wi-Fi chip and if that’s the case it seems to have paid off.
My Conclusions:
1. If you want more battery life on the Epic, turn off auto brightness and set the brightness quite low. Set applications to “dark” theme’s when available because black pixels draw no power on the amoled screen.
2. If you want more battery life on the Evo, you’ll want to look into rooting & custom undervolting kernels (and you’re in the wrong forum…haha).
I welcome your comments and to know if you draw different conclusions. Thanks!
Well I've heard the samoled takes less power than the lcd but idk. Just putting some info down.
Sent from my SPH-D700 using XDA App
rocket321 said:
Epic vs Evo battery differences
My Conclusions:
1. If you want more battery life on the Epic, turn off auto brightness and set the brightness quite low. Set applications to “dark” theme’s when available because black pixels draw no power on the amoled screen.
2. If you want more battery life on the Evo, you’ll want to look into rooting & custom undervolting kernels (and you’re in the wrong forum…haha).
I welcome your comments and to know if you draw different conclusions. Thanks!
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Click to collapse
1. If you want more battery life on the EPIC, get a custom ROM (viperrom) running 2.2. Helped me get from 8-10h with low use to 16+h with moderate/heavy use.
Yeah stock epic battery is horrible.
However, on dk28 its much much better battery life
Anyone else notice that the screen always takes up about 90% of the power? Lol but that doesn't mean it won't last long
I just made a thread about how I watched two full length movies on the highest brightness and I'm at 13hrs right now still kickin lol
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deano0714 said:
Well I've heard the samoled takes less power than the lcd but idk. Just putting some info down.
Sent from my SPH-D700 using XDA App
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I have said both of this things on other threads today, but they bear repeating here.
First of all, SAMOLED uses more power than LCD in most cases. It uses less power than regular AMOLED. If you go back and read Samsung's press releases, they say that fact. They don't claim better battery life than LCD, and you know they would be the first to say it if it were true.
narn17 said:
1. If you want more battery life on the EPIC, get a custom ROM (viperrom) running 2.2. Helped me get from 8-10h with low use to 16+h with moderate/heavy use.
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Click to collapse
The Galaxy S devices have software issues that cause some of them to use their antennas constantly. With this issue, the battery drains in 10 hours, at best. You should be getting at least 20 hours out of your battery with moderate use. If you are experiencing these issues, chances are it will happen on all ROMs (as it did with me). I know two other people who have Galaxy S devices and they both have this issue. Mine started getting 20 to 30 hours when I switch to DK28 (and my GPS broke, not to mention occasional FCs and a broken WiFi tether), so I am betting this will get fixed with the 2.2 update. The above quote further supports this theory.
BTW, the whole "recalibrating the battery" thing does not help and can be harmful to your battery. While I am dispelling myths, clearing a cache or resetting a partition more than once is a waste of time. If you ever hear someone say "clear system 3x", they are just being superstitious. Maybe they have accidentally hit "no" instead of "yes" when they cleared it in the past, and ever since then they decided to do it 3 times.
One more myth! Most benchmarking tools for Android are crap. Quadrant has been shown to give highly inaccurate and easily manipulated scores. I used to think Linpack was good, but I have heard of G2's getting like 33 MFlops, which is ridiculous and makes me think it is bad as well. Any benchmark that takes into account FPS is only accurate if you remove the FPS limiter on your phone. All phones that I know of are locked to a max of 55-60 FPS (Epic 4G is locked to 55.6). What that means, is if you put a 5ghz quad core CPU with a GTX 580 in your phone, you would still get 55.6 FPS with those benchmarks (such as Neocore).
BenchmarkPi seems to be pretty accurate for CPU. An3DBench seems to be OK for OpenGL and 3D benchmarks since they tend to tax the GPU so much that it doesnt ever hit its limiter.
Dear People,
I am posting this out of big ENVY from my friend's story of his iPh*** 4 battery life with 40hrs ++ of usage (social network on, moderate usage, data always on, bla bla bla) and he still got 20% left of his battery!!!
I was just wondering did anyone managed to experience 40hrs ++ of battery lifetime? My best achievement with my nexus s battery life is
1 day 3 hrs with
MIUI Rom JB 2.8.17
Marmite Kernel 4.3
SmartassV2/deadline
100/1000
Automatic brightness on
Could we EVER achieved 40hrs ++ battery lifetime??? Since Iph*** 4 has practically same specs with Nexus S
It has 1Ghz procs, 512mb ram, 1500mah battery, bla bla bla
Any comments?
A very big advantage of the iphone is the very dim (to my opinion) screen backlight. If you change that to default 1 min instead of 20 on a custom rom, and then change your auto brightness values as well to lower ones your lifetime should increase alot. At least mine does. Also I use Llama to close mobile data after 5 minutes of sleep and then instantly turn it on on unlock. Anyway..we will never be able to win versus apple at some things. They have one operating system made for one device. We got one operating system for like..1 milion devices? That's the same story of console vs pc games.
andrei.voinea93 said:
A very big advantage of the iphone is the very dim (to my opinion) screen backlight. If you change that to default 1 min instead of 20 on a custom rom, and then change your auto brightness values as well to lower ones your lifetime should increase alot. At least mine does. Also I use Llama to close mobile data after 5 minutes of sleep and then instantly turn it on on unlock. Anyway..we will never be able to win versus apple at some things. They have one operating system made for one device. We got one operating system for like..1 milion devices? That's the same story of console vs pc games.
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Never used iOS devices before...So they have those kind of things hey..
I agree with you with the point that their OS was made for one device, while us is for millions
Thanks for the comment
I've been getting pretty excellent battery life lately, will put up a screen shot but got almost 52hrs battery life with wifi and 3g on until it got to about 15% with about 2h 24m screen on time, although this was pretty light usage to be fair.
Using codename 3.3.2 with standard kernal, I turned NFC off and this seemed to help massively although I've also heard the new Maps app has solved some battery drain so not sure which has contributed the most.
cptblubear said:
I've been getting pretty excellent battery life lately, will put up a screen shot but got almost 52hrs battery life with wifi and 3g on until it got to about 15% with about 2h 24m screen on time, although this was pretty light usage to be fair.
Using codename 3.3.2 with standard kernal, I turned NFC off and this seemed to help massively although I've also heard the new Maps app has solved some battery drain so not sure which has contributed the most.
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52hrs?????? Cant wait for your screenshots man!
You may think the specs are the same, but the hw in the iPhone and power management is still superior. They get a push notification, even while the 3g radio is in idle and almost off (in which it saves more power). It's hard for Android to optimize the power management specially because of that many hardware variations, it's not only the CPU that counts.
madd0g said:
You may think the specs are the same, but the hw in the iPhone and power management is still superior. They get a push notification, even while the 3g radio is in idle and almost off (in which it saves more power). It's hard for Android to optimize the power management specially because of that many hardware variations, it's not only the CPU that counts.
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Click to collapse
Well, thats good to know, but since its the software differences (meaning coding and stuff), surely (i assume and hope) that we could also applied it (somehow) in our devices through tweaks, can we?
IMHO not much is possible since this is older hardware already and a question for how long will Google bother with it. It might be alot of work needed and you gain some insignificant amount of savings.
Would be nice to see some kind of power management tweaks in coming version of Android though.
well its halfly because android works differently and half way because of the hardware.
yes, the hardware is similar, but the nexus screen takes up more power, the processor is not very efficient, and nfc takes up power... also, the 3g radios are honestly HORRIBLE on the nexus s and that might have something to do with it.
but, the software side does make a major impact. iPhones do not multitask like android, which saves power on slower devices like the iphone 4. thats only half of it though, for instance, the iphone 4S has much worse battery life than the nexus s (by far). ROMs make a big difference also, I am very picky when choosing a ROM- if it doesnt have great battery life then I immediately replace it by another ROM that does.
I get on average about 16-20hours pretty consistantly if you are wondering, and I am OK with that as long as it makes it to the end of the day... I wake at 3:30 and normally it does. My advice is to experiment with different ROMs, I would suggest some, but I use an S 4G...
I don't really believe it. My friend has an iPhone and he uses it quit a bit and seems to have to keep it plugged in as much as I keep my phone. I think he said he usually gets about 8 hrs out of it. And the screen is pretty dull compared to mine so that might make a difference to
Sent from my Nexus S 4G using xda app-developers app
The iPhone screen is a lot smaller too and that's a big tradeoff.
I always get a chuckle at the iHerd people I see on the bus holding their tiny screen 6 inches in front of their face so they can read it.
If battery life is really a concern get a couple of spare batteries and a charger.
Sent from my Crespo using xda premium
heccubusxda said:
The iPhone screen is a lot smaller too and that's a big tradeoff.
I always get a chuckle at the iHerd people I see on the bus holding their tiny screen 6 inches in front of their face so they can read it.
If battery life is really a concern get a couple of spare batteries and a charger.
Sent from my Crespo using xda premium
Click to expand...
Click to collapse
Or an extended battery...
Sent from my Nexus S 4G using xda app-developers app
heccubusxda said:
The iPhone screen is a lot smaller too and that's a big tradeoff.
I always get a chuckle at the iHerd people I see on the bus holding their tiny screen 6 inches in front of their face so they can read it.
If battery life is really a concern get a couple of spare batteries and a charger.
Sent from my Crespo using xda premium
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Click to collapse
Thats a good point too, smaller screen
Use this as yours to shut him up apples wack i got this oc to 1400 on stock with air kernel 186
Sent from my Nexus S using xda premium
nucleor1989 said:
Use this as yours to shut him up apples wack i got this oc to 1400 on stock with air kernel 186
Sent from my Nexus S using xda premium
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Whoaaaah! What rom and settings? Awesome!
Sent from my SGH-T959V using xda app-developers app
Data was on all the time ? Ive got 33 hrs once but this is insane
I have achieved 50 hours on cna ... yes codename android but dang I forgot to take a screenshot of it I didn't have data on that time though
Sent from my Nexus S using xda premium
Lasting 40+ hours is easy if you don't use the phone much...
The screenshot was taken on a long weekend a while ago. I was busy during the weekend and didn't use my phone much apart from listening to music for no more than 2 hours.
Si_NZ said:
Lasting 40+ hours is easy if you don't use the phone much...
The screenshot was taken on a long weekend a while ago. I was busy during the weekend and didn't use my phone much apart from listening to music for no more than 2 hours.
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Thats true, but from the iphone their data was on all the time, mid moderate usage.
But, just like some people said, power managwment chip, the os, makes big differences
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