Related
How does the battery behaves when compared with HTC HD and the original Diamond?
I found a good review article of the diamond2
"In terms of battery life the Diamond2 promises nearly double the amount of standby time over its predecessor. From my time using the Diamond2, starting with a full charge and with frequent use (web browsing/ music/ camera/ the excellent bubble burst game!), the next time the phone needed charging was five days later and even then this was more of a top up rather than the battery running on empty."
(http://www.mobiles.co.uk/htc-touch-diamond2-review.html)
i cant quite beleive a 5 day battery life on this phone! if it is true then it will be awesome but it has a smaller battery 1100 mah against 1350 in my phone currently which i get about 1.5 days out of it.
So i will be reserved, and slightly pessimistic
chris10230 said:
i cant quite beleive a 5 day battery life on this phone! if it is true then it will be awesome but it has a smaller battery 1100 mah against 1350 in my phone currently which i get about 1.5 days out of it.
So i will be reserved, and slightly pessimistic
Click to expand...
Click to collapse
I would expect it to perform like your current phone (the HD, right?). smaller battery but smaller screen, so it should be about the same, and the htc provided data seems to be in line with that (about the same stand by, talk time and video talk time...)
So I think u are right to be pessimistic, but I also think that a higher capacity battery is possible with the same size as the 1100 mAh one: This TD2 battery is large, compared to the TD1 one: about 2 times as large, and TD1 was 900 mAh. Except if they are not of the same thickness, TD2 battery should have a higher capacity than just 1100 mAh...
I found nice shots comparing internals of TD1 and TD2, where we can see the 2 batteries
http://www.mobile01.com/newsdetail.php?id=7317
I do not know how TD2 battery compare size-wise to the HD, maybe you could post some pics of your battery? side by side shots of TD2, TD1 and HD batteries would be very nice, especial it we also have thickness shots anyone having acces to the 3 care to post those?
gkai, no i dont have an hd, i wish i had one. I only have a polaris which is why i cannot understand the 5 day battery life as if my current phone does not last that long. I think that something that is more powerful, bigger screen and a smaller battery will last as long, i just dont, and also mine is stated to have a 400 hr standby time and the td2 only has 360 hours.
So i will still be pessimistic and say that they had some wonderous phone to get it to last for 5 days! (or didnt touch it for about 3 days!)
also the physical size of the battery does not actually matter the rating of the battery is what matters and that is smaller therefore a smaller battery. The td1 i think was always said to have a really bad battery life so hopefully htc have heard this and made the td2 better with a longer battery life, we can all live in hope
chris10230 said:
gkai, no i dont have an hd, i wish i had one. I only have a polaris which is why i cannot understand the 5 day battery life as if my current phone does not last that long. I think that something that is more powerful, bigger screen and a smaller battery will last as long, i just dont, and also mine is stated to have a 400 hr standby time and the td2 only has 360 hours.
Click to expand...
Click to collapse
hum, then it is possible: faster processor does not mean that it will drain battery faster: new generation are etched finer and use less power for same or more processing power. Screen can be (slightly) more efficient, and power saving of the different radio can be better too. But I expect the phone to be good for 1.5/2.5 days of typical usage, no more, given the current behavior of the HD, touch pro and touch diamond (which have almost exactly the same internal components)
So i will still be pessimistic and say that they had some wonderous phone to get it to last for 5 days! (or didnt touch it for about 3 days!)
Click to expand...
Click to collapse
The second is more likely, I doubt htc has changed the battery for the review (although it is possible). Good cell coverage is also good for battery life, if u have a cell tower nearby your phone will get better standby and communication time, same for wifi. I guess they both were in ideal condition and used the phone lightly...
also the physical size of the battery does not actually matter the rating of the battery is what matters and that is smaller therefore a smaller battery. The td1 i think was always said to have a really bad battery life so hopefully htc have heard this and made the td2 better with a longer battery life, we can all live in hope
Click to expand...
Click to collapse
hum, yes, it is the rating that count...but given that all good batteries use the same technology (lithium-polymer), mAh rating should be in direct relation with physical size: a large battery with small rating just means that your battery is of an older generation (unlikely), or that there is a lot of dead material (plastic packaging) in your battery. So either the TD2 battery is much thinner than TD1, or it is likely that higher capacity batteries with the same physical size will surface quite soon on the accessory market (I hope for the second case, battery life under normal usage is one of the most important factor for me, it is convenient to have more than 1 day of "heavy" use per charge, and less than one day under "normal" use means the phone is poor for me, whatever its other qualities...)
Bettery Life!
Hi Guys.. Wel 4 days in, and still on my first full charge!
According to the power screen, I have used
58 hours 25 minutes standby
Talktime 2 hours 22 minutes
device usage 3 hours 24 minutes
And stil have 4 bars left!
how to say i think that htc have finally sorted out battery problems and have made a phone with a good battery life. Seems like ive been told!
Juggles said:
Hi Guys.. Wel 4 days in, and still on my first full charge!
According to the power screen, I have used
58 hours 25 minutes standby
Talktime 2 hours 22 minutes
device usage 3 hours 24 minutes
And stil have 4 bars left!
Click to expand...
Click to collapse
Hay there what settings are you using, ie HSDPA on? screen brightness settings auto or minimal? how are you using your device?
Yay a HTC phone with good battery surely it cant be so lol
Juggles said:
58 hours 25 minutes standby
Talktime 2 hours 22 minutes
device usage 3 hours 24 minutes
Click to expand...
Click to collapse
My standby time always more or less equals the device usage time, so 50/50. I keep playing with it all day At the end of the day it's at app. 50% charge.
Settings
MartyH32 said:
Hay there what settings are you using, ie HSDPA on? screen brightness settings auto or minimal? how are you using your device?
Yay a HTC phone with good battery surely it cant be so lol
Click to expand...
Click to collapse
O have 3g on all day, as well as Exchange push mail, however i only get about 15 mails a day.
Screen is set to auto brightness. I have to admit i hate this rom, so am using it as a secondary device at the mo..
had it's first charge last night. Unplugged it at 7:30....now almost 11am.
it says
standby
2 hours 38 mins
talk time
0
Usage
1hour 28 minutes.
3 bars from the main power meter have already gone.
Brightness is set to auto and only recieve gprs from where i am at the moment.
I new it was too good to be true, look like there'll be a full charge tonight again.
gkai said:
hum, yes, it is the rating that count...but given that all good batteries use the same technology (lithium-polymer), mAh rating should be in direct relation with physical size: a large battery with small rating just means that your battery is of an older generation (unlikely), or that there is a lot of dead material (plastic packaging) in your battery. So either the TD2 battery is much thinner than TD1, or it is likely that higher capacity batteries with the same physical size will surface quite soon on the accessory market (I hope for the second case, battery life under normal usage is one of the most important factor for me, it is convenient to have more than 1 day of "heavy" use per charge, and less than one day under "normal" use means the phone is poor for me, whatever its other qualities...)
Click to expand...
Click to collapse
I've never seen them use Li-Poly Batteries... The D2 Uses:-
Rechargeable Lithium-ion battery
Capacity: 1100 mAh
trinode said:
I've never seen them use Li-Poly Batteries... The D2 Uses:-
Rechargeable Lithium-ion battery
Capacity: 1100 mAh
Click to expand...
Click to collapse
yes, my mistake However, my point stand: battery capacity should be directly linked to its physical size and weight, given that the technology and materials used are the same (especially if you compare the batteries of a single manufacturer, like HTC). If not, it mean that the battery is not optimal and that a higher capacity battery battery of the same size is likely to come afterwards (from htc or other suppliers). That's why I was interested in the physical size of the TD2 battery compared to other devices...Well, with some luck I will know today, maybe a batch will arrive this afternoon in my favorite mobile shop and I will pick one ;-)
After the first full charge and unplugging in the morning, mine lasted until the evening.
about the same as my D1.
I don't have bluetooth or wifi on ever.
So to be honest, with average use....it's still ****
Good job i bought myself a AA battery emergency charger for it as well
Extend batterylife
Maybe not what we're looking for , but it's a way to extend batterylife:
Just underclock your TD2 or other HTC-device:
Look here and here...
FYI: Overclocking is not possible (yet )!
@Juggles
Didn't expect to see you here, how's life? How's WmGurus?
So you have move to TD2.
How's it?
Good buy?
It's selling here from today in shops between SGD538 to SGD668. Maybe its a promo price.
Hey dude
CWKJ said:
@Juggles
Didn't expect to see you here, how's life? How's WmGurus?
So you have move to TD2.
How's it?
Good buy?
It's selling here from today in shops between SGD538 to SGD668. Maybe its a promo price.
Click to expand...
Click to collapse
I love it to bits! You can check out my review on Tracy & Matts Blog, http://www.tracyandmatt.co.uk/blogs/index.php/2009/04/24/htc-touch-diamond2-review
as for wmgurus.. it sort of died a death i think! LOL
Juggles said:
Hi Guys.. Wel 4 days in, and still on my first full charge!
According to the power screen, I have used
58 hours 25 minutes standby
Talktime 2 hours 22 minutes
device usage 3 hours 24 minutes
And stil have 4 bars left!
Click to expand...
Click to collapse
How you've managed to achieve this I'd like to know. As currently I have 2 bars remaining and I have the following listed:
19 hours 1 minute standby
Talk time 0 hours 2 minutes
Device Usage: 3 hours 25 minutes
since my last charge at 23:25pm Yesterday. It's now 21:53. I have had WiFi and 3G on most of the day mind you!
7 DAYS on Standby within 1 full charge! (however without Sim Card in)
I was able to add some real time graphing to the battery calibrator app where the current draw thru the battery is sampled every 2 seconds. This gives a very fine tuned accurate picture of what the battery is doing. note the battery driver had to be edited to allow for current readings taken at a faster sample rate, so all that work was done initially.
This first test is the phone switching from connected to 3G to switching over to wifi. notice the extreme difference between the spikes and then how smoooth it levels off around the 14 second mark. shows how much battery is saved using wifi (i'll come to this more later).
Switch from 3G to WiFi data by RogerPodacter
The second image is just showing the phone left completely idle 3g data, but with the screen on, min brightness, and timeout set to never. curious to see those regular periodic blips of current draw. notice -170mA is about spot on for the black amoled screen showing all black color like that. and this shows how efficient 3g data is during idle when no data transfer is taking place. This graph view is what was displayed during this time, mostly black.
Idle 3G Connection, Screen on Min Brightness by RogerPodacter, on Flickr
the next screen shot shows switching from screen brightness at minimum to maximum brightness, but showing the same black graph image. notice the slight increase, but it stays dead flat still. it switched at the 36 second mark.
Switch from Min to Max Brightness, Showing Black by RogerPodacter, on Flickr
This screen shot shows what happens to amoled when displaying a fully white image at maximum brightness. the power draw goes thru the roof! it started at the 16 second mark. i used the app "dead pixel detect" to display solid full screen colors, this one showing white.
Displaying a Solid White Screen by RogerPodacter, on Flickr
Same as above, but now switching back to the black graph view, the current drops down to normal. Swtich happened at about the 15 second mark.
White Color Max Brightness by RogerPodacter, on Flickr
The next screen shot shows why wifi gives so much better battery life. this shot shows receiving a new gmail email message over 3g data connection. right at the 20 second mark the email comes in, and the current draw spikes over -500mA. when the same email message is received while connected to wifi, there is not even a spike at all, it stays flat.
Receive Email over 3G by RogerPodacter, on Flickr
This is due to the much faster latency that comes with wifi. on 3g, the 200ms ping time, each direction to and from the server, all while the radio is fired up, is what causes the spike. now think about that happening all day long with all your google services constantly talking to their servers.
This next one shows loading a web page with a light color, and scrolling around. I loaded a thread here at XDA with the stock browser, without invert color turned on. look at the enormous spikes.
Load and SCroll Light Color web page by RogerPodacter, on Flickr
And finally, this is loading and scrolling the same web page, same thread, but with invert color option turned on, so the color was basically black and dark. (For these last 2 web page tests, i forgot to turn the screen brightness back from max to minimum brightness. oh well.).
Load and Scroll Dark color web page by RogerPodacter, on Flickr
If anyone wants more test comparisons done, just post your request. For the above tests, i didnt think things out too much, so i'd like to really do things over and show more/better scenarios of how power draw is effecting our phones' battery.
Interesting! Thanks for taking the time to put this together.
I had one more, from today. Watch what happens when i go and read a topic on the engadget app (entire white colors) while i was outside at max brightness. power draw sky rockets up, then back down when i return to the black graph view.
Browse the White color Engadget App by RogerPodacter, on Flickr
great data - can you check some apps, like words with friends & weather channel (background widget). words with friends tops out my cpu for no good reason.
fyid said:
great data - can you check some apps, like words with friends & weather channel (background widget). words with friends tops out my cpu for no good reason.
Click to expand...
Click to collapse
how exactly would you like it tested? i've never used words with friends, and i never installed the weather channel widget either. the second one might be harder to test. is there a way to tell it to initiate its update or data transfer or whatever it is that it does?
The current graph is a lil bit confussing. Is the rightmost the oldest plot? and the leftmost is the most recent?
zeus_chingon said:
The current graph is a lil bit confussing. Is the rightmost the oldest plot? and the leftmost is the most recent?
Click to expand...
Click to collapse
The right direction is older and the left is more recent. The full current graph only shows in seconds, around a minute or so. So this is like a true profile of all power, in real time, going thru the battery's resistor, and hence device power draw. So its great to see exactly what different tasks do to power behind the scenes.
I've been doing many more tests just for fun. My overall discovery is that the screen is bad, real bad, and there's a disproportionate difference between min and max screen brightness. Min is really good, but max is so far off the charts bad that its horribly power hungry. So I'm practicing keeping locked at min brightness. Then comparing things like CPU usage loading a web page in the background, then over WiFi then 3g, etc.
I'm enjoying seeing the bad offenders.
Thanks for posting these, you're just as helpful here as you were on the S60 boards @ hofo
Excellent analysis to visually confirm what has been known and constantly overlooked by people complaining about their battery life: the 2 major power-hungry things in the phone are the display and the 3G data - when it fires up.
You could also show GPS power draw, to have a good comparison between values. I'd guess that running Google Maps on full brightness during the day over cellular data will show near the maximal power draw possible from the device.
Jack_R1 said:
Excellent analysis to visually confirm what has been known and constantly overlooked by people complaining about their battery life: the 2 major power-hungry things in the phone are the display and the 3G data - when it fires up.
You could also show GPS power draw, to have a good comparison between values. I'd guess that running Google Maps on full brightness during the day over cellular data will show near the maximal power draw possible from the device.
Click to expand...
Click to collapse
Good ideas, I'll do a gps test next. I've already done it but with no screen shots, and I can say it really puts I high load on the battery by far.
I also just now did a 3g phone call test, and it was higher than I thought it would be. I'll post the screen later.
I'm now a huge proponent of min screen brightness. If you can use min brightness then do it. If that's too dim during the day then 40% gives the best combo of still usable with decent power. But auto brightness, or max brightness which will happen in sun light, is just totally off the charts bad. And when loading a web page outside at max brightness, the power is thru the roof.
So I'm now locking my screen at 40%.
Edit: I also did color comparisons. Full screen of white, red, blue and green. Nothing too crazy but still cool.
Fascinating read. Keep up the good work!
Wow, very interesting.
Thanks man.
Wow I'm finally trying out stock gingerbread and the idle power readings are significantly lower than froyo. On froyo I'd see around 20mA and I'm seeing about 7mA now consistently. My app doesn't work on stock so I don't have fine control but it definitely makes sense from reading what people are saying.
Nice little review.
Out of curiosity, do you think there's much difference between AMOLED, SAMOLED and SAMOLED+ in terms of power consumption?
I'm eyeing the Galaxy S II as my next phone and online reviews all rave about how power efficient it is. But we all know how that isn't entirely true!
The SAMOLED displays are supposed to be 30% more efficient then regular AMOLED.
Hmm, and I have a Nexus S, and that SAMOLED seems to be total crap... lol
tangcla said:
Nice little review.
Out of curiosity, do you think there's much difference between AMOLED, SAMOLED and SAMOLED+ in terms of power consumption?
I'm eyeing the Galaxy S II as my next phone and online reviews all rave about how power efficient it is. But we all know how that isn't entirely true!
Click to expand...
Click to collapse
Samsung claims a 30% increase in power savings, bit I don't believe it for a second and here's why.
First, both the nexus one (amoled) and nexus s (super amoled) both get IDENTICAL browsing test results, both make it 3.7 hours at anandtech. Nexus s has slightly larger screen but also has larger battery.
Second all you have to do is look thru galaxy, nexus s, and galaxy s2 forum. Not a single one has anyone getting more than 4 hours of screen on time in the battery threads. Not a single bit of improvement, at all, between the amoled technologies.
Then to rub it in, iPhone 4 crushes it getting a full 10 hours of browsing time on the same test.
LCD is becoming my preferred choice more and more. Testing an HTC inspire with slcd, it pulls 250 mA Max brightness. But my test results in this thread alone shoot up to 900 mA just loading white pages.
Hmm. So wonder whether it's worth getting the HTC Sensation instead of the Galaxy S2...
Wow! With full brightness on a mear-white page and the torch on, I was drawing 747mAH...
Radio versions
There were conflicting reports about power consumption of various radio versions including versions 5.08 and 5.12. It would nice to see a more solid evidence of how these radios perform. Thanks ...
I've read this thread started by JamesBarnes and it got me thinking. The setup he has done is good, but we actually have all those things in our phones. We've got a multimeter (current widget), we've got a power draining load (the phone itself) and the major drawback in his setup is eliminated. He is actually measuring the capacity of the battery to be compared with other batteries, but our phones protect the batteries by switching off with some charge left in the battery because LiIon batteries should not be drained completely. This means a/ you can't damage your battery by full cycling and b/ the phone does not use all the battery capacity. So HTC says 1230mAh, but what is the actual usable capacity of the battery? The most precise measurement should be with a constant minimal drain, but this will take too much time. The next best thing is the charge cycle. So I drained my battery untill shutdown. Then I powered on (I have fastboot enabled, so the phone turns off at 1% to have some energy left to power the memory while "off"), set the current widged to update at 30 sec, cleared the log and plugged in the charger. Then I turned off the screen and left the phone to fully charge overnight. In the morning I downloaded the log and calculated the energy that was pumped in the battery. The result is 1121 mAh. You can calculate yours too. You just have to sum the results of the charge current and then multiply the result to the time interval measured in hours (for 30 sec interval you should actually divide by 120). There is a small bug with current widget and it doesn't really log every period. Sometimes it's a bit more and sometimes it skips. So I wrote a small matlab program to calculate the exact capacity and if you want, you can send me your log of a full charge, or you can calculate it yourselves - just set a higher interval because this way the error will be smaller.
If anyone has a spare DHD (not likely) can leave the phone at airplane mode with 300 sec log interval and in a few days we'll have an exact value of the battery capacity.
tkolev said:
If anyone has a spare DHD (not likely) can leave the phone at airplane mode with 300 sec log interval and in a few days we'll have an exact value of the battery capacity.
Click to expand...
Click to collapse
No, what you will have is the exact capacity of one particular battery. LI-ion batteries vary in the charge they hold depending on how they have been used and for how long they have been used, so IMHO the above data would not be applicable to the community at large, also don't forget it's the DHD that decides when the battery is fully charged so that would add another uncertainty to the pot.
ghostofcain said:
No, what you will have is the exact capacity of one particular battery. LI-ion batteries vary in the charge they hold depending on how they have been used and for how long they have been used, so IMHO the above data would not be applicable to the community at large, also don't forget it's the DHD that decides when the battery is fully charged so that would add another uncertainty to the pot.
Click to expand...
Click to collapse
The purpose of my post was to explain how can anyone measure their own batteries. I don't care about yours, you don't care about mine - that's for sure. But how can you know when buying a replacement battery that the xxxx mAh written on the back is true (and it usualy isn't)? "Lasting longer" is subjective and my method gives you an objective measurement. My battery is five month's old. 1121mAh is a plausable value proving that the method works. If you don't want to bother to do the math yourself, you can send me the log, so I'll do it for you. If you want to know about the current capacity of your battery - fine. If you don't want to know - it's also fine. Also if we can gather some precise measurements (minimizing the error by using constant drain over a longer period) on the capacity we can eliminate the error introduced by the different units and we'll know what to expect from stock batteries and thus we can compare the non-OEM ones to them.
plus, Li-ions usable capacitys change with the batterys temperature and current. How is knowing that my battery could give me 1100mAh @ 5mA/300K of any value to me if I usually need my phone @200mA/280K? Measuring while charging ain't the best idea either, because heat dissipated by the battery during the process will show up in your reading. (and dissipated heat is not the kind of energy that you'd call 'usable')
Also, I am not really sure, how bumping the interval up, thus generating less discrete measurements, is going to increase accuracy...
llama-power said:
plus, Li-ions usable capacitys change with the batterys temperature and current. How is knowing that my battery could give me 1100mAh @ 5mA/300K of any value to me if I usually need my phone @200mA/280K? Measuring while charging ain't the best idea either, because heat dissipated by the battery during the process will show up in your reading. (and dissipated heat is not the kind of energy that you'd call 'usable')
Also, I am not really sure, how bumping the interval up, thus generating less discrete measurements, is going to increase accuracy...
Click to expand...
Click to collapse
As I have said in the first post, it's best to measure the drain, not the charge, but unfortunately I can't spare the time needed without using my phone to take that measurement. The fact is that I don't know how current widget logs the current. Is it measured at the beggining of the interval, the end, is it a mean value over the whole interval, the max, the min? So we should have as constant drain as possible. That way we will eliminate the effect of different measuring methods.
The longer period is just for ease of use. Have you seen a current widget log with interval of 30 seconds? There are many missing intervals, others are 40 sec, 50 sec and the simpler method (summing up the values and multiplying by the time) doesn't work, so it won't be suitable for everyone to calculate the capacity by their own. And with a constant drain the longer period won't introduce that much of an error in the calculation.
You can't have a precise measurement for all the situations you might think of. Some days I talk over the phone for 30 minutes, some days I talk for over an hour. Some days I read e-books, other days I watch videos. The different drain causes different usable capacity as you know. The only thing that's common with the phone day-to-day usage is the stand-by periods. This might have a negative impact on the accuracy because with digital reading you have quantization which introduces bigger error on small values, but this remains to be seen. If you can have constant drain at say... 50 mAh (roughly 1:2 usage pattern), it will introduce max 2% error (depending on the value reading method by the phone). And I don't know about you, but I think 2% is nothing when dealing with something so variable like the battery capacity.
Hey guys I think this will be a great thread for people to post their battery usage results to let future adopters of windows phone 8 see what sort of battery life our devices are getting
I would like to know also... Can people post some real world experiences about the batterylife of their WP8 devices...
A fact also is that it will get better with updates as it is so new OS.
Got 18+ hours of battery each of the firstb2 days with my 920. Haven't run it dead though
Sent from my RM-820_nam_att_100 using Board Express
FiyaFleye said:
Got 18+ hours of battery each of the firstb2 days with my 920. Haven't run it dead though
Sent from my RM-820_nam_att_100 using Board Express
Click to expand...
Click to collapse
Awesome. How heavy was your usage? Did you use 3g, wifi and all of that or did you barely use the phone?
I have been studying battery use closely for my first 5 days with the 8X. There is definitely an idle drain issue. Compared to a One S (same basic hardware, smaller battery) the idle drain is at least 3 times higher, if not 5 times higher. In 7 hours overnight, my 8X loses around 15% of battery. This is with one email account set to sync every 15 mins and one set to sync every hour. Obviously there is no screen time or anything else to worry about and the signal where I live shows as 3-4 bars (out of five).
Having said this, the in-use battery life seems decent. Certainly the screen is a real hog, but a normal working day (about 10 hours of mixed usage) for me so far drains about 40-45% battery. This is worse than other devices, but not too bad for me and it will improve - I find it takes around 1-2 weeks for battery life to settle.
By way of comparison, I used to have a Lumia 900 which would use around 35% in a working day for me and I have a RAZR i Android phone which uses around 25% (yes, 25%).
My guess is that there are a couple of things going on here. Firstly, there is a large idle drain issue. This should be easily fixed in software. Secondly, I suspect the baseband is not too efficient so a weaker network signal really causes a heavy drain, again this is probably fixable in software. I suspect that WP8 is not as efficient as WP7.5 in general, again, easily fixed in software. Basically, we need a software update or two.
My HTC 8X eats up battery really fast.
With light usage im down to 5% after about a day.
With heavy usage, 1hr browsing and about 50 texts i go from 100% to 10% in about 6-7 hours.
About the same as my 2yr old Omnia 7
I'm glad these issues are being brought to light as very little is being mentioned about battery life at the moment. As the Jones has said it can be fixed with software updates. 1800mah and a 4.3 slcd2 hd display should be a decent enough combination to get a good day of usage with minimal drain. The One X has exactly the same size battery and the screen is half an inch bigger. The One X has a fairly decent battery life so there is no way that the drain is down to hardware. Funnily enough my current phone is the One S and my battery life is fantastic. When I'm not using my phone the drain is virtually non existent. I hope they fix this battery drain issue and I hope it's soon. The lumia 920 has the same issue so it's definitely WP8 and not the phones. When more people get windows phone 8 devices by the end of the month I think the issue will come to light. So you guys with the 8X would you recommend it? I'm considering selling it and my one s so I can buy an HTC One X+ I'm not sure though. I haven't recieved my 8X yet but If the battery drain is that bad and the phone isn't great than I'm probably better off selling it before I even open it so I get the maximum amount of money. I really hope it's a good phone so your opinions will be really important to me.
The battery life on the Nokia 920 is awesome with a capital A. There seems to be no idle drain to speak of. Best battery of any phone I've had and I've had the galaxy s2, the note 1 and note 2. Very happy with it. Got 19 hours the first full charge with moderate to heavy usage.
Sent from my RM-820_nam_att_100 using Board Express
TOA Duck said:
The battery life on the Nokia 920 is awesome with a capital A. There seems to be no idle drain to speak of. Best battery of any phone I've had and I've had the galaxy s2, the note 1 and note 2. Very happy with it. Got 19 hours the first full charge with moderate to heavy usage.
Sent from my RM-820_nam_att_100 using Board Express
Click to expand...
Click to collapse
That's very interesting actually. There are mixed reports on the Lumia 920 as well as the 8X on battery life. You're the first person I've seen that's said the battery is fantastic for any of the wp8 phones. I'm so confused wether it's worth me even opening my 8X when I get it or selling it straight away. Guess I'll have to wait and see if they bring an update to fix the battery drain.
I have had the 820 for a single day, after full charge I used about 55% in 10 hours. Half hour gaming, hour or so of music and 2 push email accounts. Pretty heavy Facebook and twitter.
Sent from Windows Phone 8 on Saturn
Battery life so far seems about average, I get between 16-24 hours per day with moderate usage. Just depends on whether I'm using wifi or LTE. Lumia 920
This is a hard one to answer, Out of the box the phones eats power like a monster. I had to charge 2 times in the day then again over night on my first day. So I decided this was not going to do and turned off a few things and put the screen to auto. Now I get a good days use. The facebook app is a real drain unless you turn off notifications. That said this is then in a way crippling the phone. I guess they just turn it up to the max to look good when you first open the box etc. Also note you get nothing like the storage ie I have lost almost 6gb before putting anything on my device. Might watch the battery issues and if they are still bad see if I can trade in for a lumia 920.
I have a Lumia 920. Saturday and Sunday, it did great on battery life. Yesterday and today at work, it's been about like my 2-year old Focus - eats up the battery if I'm at my desk. Signal is very weak inside the building here and it's cutting in/out and frequently searching, so I attribute it to that. (I was hoping LTE would penetrate better into my office, but it doesn't seem to so far). The phone does seem to do well so far on battery life when I'm in an area where it just has a good strong signal and isn't searching all the time though.
First day after a full charge and I'm down to 33% after about 7 hours. I'd say moderate to maybe heavy use. I wish there was a battery usage section like android has.
Sent from my RM-820_nam_att_100 using Board Express
This is a hard discussion to get any useful comparison information between devices, I don't know what one person may call "light", "moderate" or "heavy" use means and how that compares to how I would use those words. Hopefully one of the bloggers will do a controlled study between the different WP8 devices. As for me, I'm using the HTC 8X. It's now 1:40 p.m., my phone came off the overnight charge at about 6:30 a.m., I'm at 73% battery life. I had 1 incoming call I don't know if I even picked it up or how long it lasted (does WP8 give me length of call data anywhere?), a bunch of texting, read a fair number of Outlook emails, looked at FB, looked at weather, running Wi-Fi and bluetooth, and updated some apps.
How would you rate that battery?
i got my lumia 920 yesterday, and the battery life is okay. my Samsung galaxy S 2 with 2100 mAh battery has a better performance but its still k.
With normal usage i run about 8 houers.
I have turn off location service on my Lumia 920 and I have 60% battery after 13 hours, yesterday with same use but location turned on I just had 15%...
Hope this helps
Sent from my RM-821_eu_france_267 using Board Express
iosub said:
I have turn off location service on my Lumia 920 and I have 60% battery after 13 hours, yesterday with same use but location turned on I just had 15%...
Hope this helps
Sent from my RM-821_eu_france_267 using Board Express
Click to expand...
Click to collapse
how you make it man ? Are u always connected with the mobile data ? Do u use your phone for music and text messages ?
Just go to settings and disable location. I use my phone for email 6 accounts. Web browsing and some games
Sent from my RM-821_eu_france_267 using Board Express
iosub said:
Just go to settings and disable location. I use my phone for email 6 accounts. Web browsing and some games
Sent from my RM-821_eu_france_267 using Board Express
Click to expand...
Click to collapse
me just using for mail an reading news.. thats is it... but i cant heat ner the 60% area.
and i turned it of. do u use your facebook account ? maybe its that whats taking lot of energy
It's amazing how much we actually use our phones in a given day, especially when we watch "videos"! Rate this thread to express how many hours of screen-on time you can get on the Samsung Galaxy M51 before depleting the battery.
Then, drop a comment if you have anything to add!
Getting 17hrs of screen on time minimum on full charge for youtube 3hrs , clash of clans 2hrs and 45-50 mins of calls per day....last 3 days with my usage
Plus Whatsapp of 1 hrs approx per day
gandeepan said:
Getting 17hrs of screen on time minimum on full charge for youtube 3hrs , clash of clans 2hrs and 45-50 mins of calls per day....last 3 days with my usage
Plus Whatsapp of 1 hrs approx per day
Click to expand...
Click to collapse
SS or it didn't happen
I've had this phone 2 days and so far I've had 6 hours 31 minutes of screen time and I have 58 percent battery left. This is mostly YouTube, Web browsing, an hour of downloading apps from play store and a bit of emulation (ppsspp) am extremely impressed with the battery life on this phone.
Battery lasts more than 2 days at Medium Power Saving mode with moderate apps usage(no gaming but with youtube, magic fluid live wallpaper, whatsapp, browsing) and SOT approx 13+ hours in these two days. At the end of second day battery remains at 30-35%.
Has anybody here compared to the Moto G8 Power? Is the battery life even better?
GoogleoverK said:
Has anybody here compared to the Moto G8 Power? Is the battery life even better?
Click to expand...
Click to collapse
Exactly how do you think a cheap SD 665 11nm chip with a 5,000mAh battery will do against a higher tier SD 730g 8nm chip with a 7,000mAh battery?
Hmmmmm ?
Devilmonkey27 said:
Exactly how do you think a cheap SD 665 11nm chip with a 5,000mAh battery will do against a higher tier SD 730g 8nm chip with a 7,000mAh battery?
Hmmmmm ?
Click to expand...
Click to collapse
Could have answered like a normal person.
GoogleoverK said:
Could have answered like a normal person.
Click to expand...
Click to collapse
I did... Exactly how do you think they will compare?
@Devilmonkey27 No need for snark...
It was a genuine question, try to provide a genuine answer. Please reply properly or don't reply at all.
Didgeridoohan said:
@Devilmonkey27 No need for snark...
It was a genuine question, try to provide a genuine answer. Please reply properly or don't reply at all.
Click to expand...
Click to collapse
So exactly how do you think a phone with half the specs will do?
Devilmonkey27 said:
So exactly how do you think a phone with half the specs will do?
Click to expand...
Click to collapse
You're missing the point. My post has nothing to do with that...
I'm simply asking, that if you have anything to add to a thread, please do so in a constructive manner without snark or attitude. It would have been very easy for you to convey your message without being rude or condescending.
If you've got more to discuss on this particular matter, please contact me through a private message (to keep the thread on topic).
Devilmonkey27 said:
Exactly how do you think a cheap SD 665 11nm chip with a 5,000mAh battery will do against a higher tier SD 730g 8nm chip with a 7,000mAh battery?
Hmmmmm ?
Click to expand...
Click to collapse
To come back on it, I have it since today and so far it's looking like the G8 Power has better or equal batterylife, standby drain is somehow bad on the M51, I checked all apps. Still I'll let the software settle and get through more cycles and check Gsam Battery Monitor in a couple of days again.
I honestly blame Samsung's other apps that aren't used and aren't able to be disabled or uninstalled.
Hi guys. I wanted to let you know my findings and provide some test results of galaxy m51 battery life. Firstly, I will outline what was my priority for that test. I wanted to check how long the phone can last mainly on google maps navigation with additional apps in the background. Also this test is a bit static so to speak but had no chance travelling for so many hours. That said I believe SOT was tested correctly for my planned usage. I guess in a real case scenario, I would need to do some more browsing and perhaps occasional screen switch offs during a break like filling up the fuel or stop to rest on a bicycle.
How I performed my test.
1. I did some initial installations, downloaded my apps and logged in to social apps such as FB, Spotify so they can work in the background, send notifications etc.
2. Once I completed the setup, I charged the very new phone to 100%. AccuBatter reported capacity was 6800mAh designed capacity not 7000mAh and estimated capacity 6700mAh.
3. CPU-Z reported Snapdragon 730 so I regret it is not 730G and honestly I do not know how to check with online stores as the packaging does not help with this. Also, I plan to test POCO F2 PRO 8gb ram/256gb version the same way and see how it goes since I get better hardware, but I like SD card slot on galaxy m51. Very useful when resetting the phone.
4. Set google maps navigation, lunched another app which uses GPS and LTE for maps showing speed cameras, road works or dangers which I use alongside with google maps. I also start shuffle play on Spotify to imitate streaming the music in my car or on the bike.
5. WiFi, LTE, GPS, Bluetooth, sync was enabled, blue light filter enabled.
6. Between 15-20 apps were in the background.
7. I unplugged the device from the mains.
8. Initial 15% discharge was with a WiFi connection with my router. Then switched of my router for overnight, left wifi enabled on Samsung but it had to continue downloading data over LTE such as Spotify music streaming. I also changed google map setting to day light only to avoid night backlight.
9. I went to bed? and in the morning there was still a lot of juice.
10. Around 20% discharge I took about 100 pictures most of them in burst mode to simulate a trip where you simply stop and take some snaps.
11. I stopped the test at 1% discharge and noticed no heating problem. The phone was cool during the test.
The overall SOT measured until 1% discharge was a staggering 17h 50m? Below you will find AccuBattery screenshots. At remaining 15% I had still over 2 h 42 m of use left.
This phone reminded me of good, old days of my Samsung galaxy s3 with a Zerolemon 7000mAh?
Now with my galaxy s7 deteriorating battery (current capacity just over 2300mAh) this is a great thing. For Galaxy s7 I also own a KiwiBird powerbank case of 5400mAh right from the beginning wich did its job when away from the mains, travelling etc.
I guess for a more accurate SOT, I would need to add some phone calls and browsing but even with I deduct 2h, it is still nearly 16 h of use. Like for me excellent. I also do not plan gaming.
On the downside of this phone it seems like my galaxy s7 takes a bit better picture, but it just might be my perception of selfies taken. Back camera is also just ok on a cloudy day. Ok but that is an offtopic.
I got my M51 yesterday and I am not fully sure yet about battery lifetime. I have charged it to 100% and about 8 hours and 2.5 hours secreen time later I am at about 90%.
Coming from my Moto Z Play I am not sure yet if I stay with the galaxy. The Mot Z Play with Incipio OffGrid Wireless Power Pack mod is about the same size and weight. Though provides less capacity (3300mAh phone + 2200mAh power mod) but battery lifetime still was bout 3-4 days usually.
The M51 is also getting considerably warmer during use.
I noticed also the Samsung battery saver with medium settings can reduce the CPU clock to max out at 70% which is handy. Not sure if there is any undervolting, underclocking tools as I think I would be perfectly fine with less performance - actually I was able to reach insane battery life on my old Galaxy P1000 with TricksterMod and custom undervolting back in the days.
I still believe better lifetime with the M51 would be possible bz reducing CPU clock and also with better screen brightness control. I noticed many times already that the M51 screen was too bright for me and having to reduce the slider to "minimum" position or very close to it. Also I noticed that the screen brightness slider is not linear at all. So on the last notch on the left side the screen really starts to dim properly while to the right there isn't much change. Also I like still to use automatic screen brightness adjustments but found the automatic adjustment often moves the brightness too high.
Also a possibility to limit the used screen area (e.g. display black bar on bottom/top) would save energy on the AMOLED screen while still providing more than enough screen space.
EDIT: One-Handed mode sort of provides this feature, but not exactly what I was looking for (like cinema-bars on top and bottom and no prominent "one-handed-mode" title.
I will continue to use the M51 for a couple of charges and decide if I am going to trade it again. The phone itself is performing well, supporting VoLTE WiFi calling but seems to lack carrier aggregation for no apparent reason. I strongly dislike the slippery, fingerprint-attracting, cheap-looking plastic backside of it.
I also hate that everywhere you tap it tries to sign up to a Samsung account. Also replaced the launcher with Nova launcher.
Below is the answer to almost all above useless posts
Battery life tests - GSMArena.com
Why I say useless ?
Simply. SOT will be completely different when you read ebooks compared when you watch movies or browse Internet.
Gsmarena does standarised comparison
I am fan of long life battery phones. I used "king" Lenovo P2 for over 2 years. M51 is better.
I'm at the fourth cycle of charge.. and got 15 hrs so far.. have done a heavy idb debloating
maby it will increase over more charging cycles?
i m getting about 20h sot normal usage
facebook lite, browser , youtube , aliexpress and playing alphalt extreme 30 min
wifi and dark mode on
brightness between 10-40 %
data off
location off
this phone have a very good battery