I've tried Battery Monitor Widget and Current Widget which both give similar mA figures to each-other but they are way too high.
After running the figures through an excel spreadsheet to calculate overall consumption from 100% to 0% they give me 3,155 mAH used which is obviously way off the 1520mAH battery capacity.
I've used a similar method with my DHD and that always comes up within 100mAH of the quoted capacity so I'm happy with my methodology.
So firstly I'm warning others not to believe the silly high figures these apps show and also want to ask if anyone's found a more accurate method/app.
Edit: I've attached the spreadsheet.
Columns A-D are taken from CW log, the rest are my formula
Column I is the important one which shows accumulative mAH used according to the log.
The phone was taken off charge at 10:09
stuart0001 said:
I've tried Battery Monitor Widget and Current Widget which both give similar mA figures to each-other but they are way too high.
After running the figures through an excel spreadsheet to calculate overall consumption from 100% to 0% they give me 3,155 mAH used which is obviously way off the 1520mAH battery capacity.
I've used a similar method with my DHD and that always comes up within 100mAH of the quoted capacity so I'm happy with my methodology.
So firstly I'm warning others not to believe the silly high figures these apps show and also want to ask if anyone's found a more accurate method/app.
Edit: I've attached the spreadsheet.
Columns A-D are taken from CW log, the rest are my formula
Column I is the important one which shows accumulative mAH used according to the log.
The phone was taken off charge at 10:09
Click to expand...
Click to collapse
You are correct - no application is reporting correct std by current consumption due to changes made by HTC again!.
Current consumption averages when device is on should however be ok.
I am using a Seidio 1600Mah battery for my Nexus S. However, battery monitor widget is still reporting 1500Mah.
Can this be causing problems? Such as, little or no gain from using the extended battery?
If so, how can I make the phone recognize the proper capacity?
Thanks
It will do that you can manually change it
Sent from my Nexus S 4G using XDA App
kirpi said:
I am using a Seidio 1600Mah battery for my Nexus S. However, battery monitor widget is still reporting 1500Mah.
Can this be causing problems? Such as, little or no gain from using the extended battery?
If so, how can I make the phone recognize the proper capacity?
Thanks
Click to expand...
Click to collapse
Well, this depends on the .bin file with stats. i know mugen power suggests to calibrate the battery. You can read on how to do that here: user guide
I think it will work for pretty much any extended battery.
@donsh00tmesanta how do I do that? Battery Monitor Widget requires me to buy the pro version. Do you happen to know a manual method?
@okishead I did that already. Thank you for the info..
Dianne Hackborn - 6:42 PM - Public Today's myth debunking:
"The battery indicator in the status/notification bar is a reflection of the batterystats.bin file in the data/system/directory."
No, it does not.
This file is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the "Battery Use" UI in settings.
That is, it has deeply significant things like "app X held a wake lock for 2 minutes" and "the screen was on at 60% brightness for 10 minutes."
It has no impact on the current battery level shown to you.
It has no impact on your battery life.
Deleting it is not going to do anything to make your more device more fantastic and wonderful... well, unless you have some deep hatred for seeing anything shown in the battery usage UI. And anyway, it is reset every time you unplug from power with a relatively full charge (thus why the battery usage UI data resets at that point), so this would be a much easier way to make it for away.
Source:
https://plus.google.com/u/0/105051985738280261832/posts/FV3LVtdVxPT
Finally.
Sent from my HTC Sensation 4G using XDA App
nice find. guess the perceived improvement in battery accuracy/life is all placebo
mrmako777 said:
nice find. guess the perceived improvement in battery accuracy/life is all placebo
Click to expand...
Click to collapse
Yes, like so many other things...
mrmako777 said:
nice find. guess the perceived improvement in battery accuracy/life is all placebo
Click to expand...
Click to collapse
Is that what wipe battery stats does? I have never noticed any difference when I did that. To think of all the times I have run the battery down, cleared the stats, charged it, and cleared the stats again with no noticeable results.
Sometimes it seems like the battery life gets thrown off by flashing a new rom. It isn't necessarily getting worse battery life but the indicator will work funny like it will show 99% for 3 hours and I will think I am getting great battery life and then go to 30 in the next 20 minutes. It is like the UI gets confused. My tablet will sometimes say "connect your charger" even though the battery and indicator are 100%.
I don't think people realize how much drain the display is on the battery. They flash a cool rom and use it a lot and then think they are getting bad battery life because the display has been on for two hours while they play with it. It is amazing the amount of difference I get between when I am fidgeting with my phone while I am at work (have to recharge during the day) and when I am at home on the weekend and it sits on the kitchen table most of the time (it will generally go all weekend without a charge).
Wonder why its even an option to wipe battery stats with apps or recovery if it doesnt do anything. I never saw a difference myself, I just wiped them periodically cause others seemed to think it made a difference.
Always worked for me. Been flashing since g1 days. whatever
Sent from my HTC Glacier using xda premium
jayb222 said:
Always worked for me. Been flashing since g1 days. whatever
Sent from my HTC Glacier using xda premium
Click to expand...
Click to collapse
Ya well she helped make the original rom for your g1 so she must be wrong. The thickness of some peoples head
Sent from my Galaxy Nexus
mark manning said:
Ya well she helped make the original rom for your g1 so she must be wrong. The thickness of some peoples head
Sent from my Galaxy Nexus
Click to expand...
Click to collapse
+1 lol
Sent from my HTC Glacier using xda premium
First of all those of us who actually knows about Android OS really knows that /data/system/batterystats.bin is nothing more than stats audit. Now if you think you can't actually re-calibrate battery and project that data than your a fool. It has nothing to do with that file.
First of all to accurately predicate it you need a true daemon that's capable of tracking system data with full autonomy access. Second you need correct battery specs from the manufacturer. As reading memory from it may or not even be supported by the device kernel if its not allocated. Thus you see issues with cross link batteries on stock roms, but some is exceptional with similar size, specs.
Now to project the correct data from ~1-100% you need to fully discharge for it to cycle. Yes I know some of you maybe saying never fully discharge Li-Io but if you know the min mV rating then you can stop near suggested mV as it won't go below and damage cells. From then the duration of full charge is defined along with total available mAh. By calculating discharged -mA draw pre scale unit over empty estimation you can predict the true battery percentage.
Ex: ATM my uptime is 14h 47m at 65% with moderate usage (talk, txt, web). Since I have MP1650mAh battery I'm currently at 1072mAh. As its drawing -90mA per scale unit with 4156mV. At this current rate fully projected empty estimation is 9h 38m. Keep in mind my deviceis highly optimized and is on very aggressive battery saving mode.
Sent from my HTC Glacier
HTC Glacier said:
First of all those of us who actually knows about Android OS really knows that /data/system/batterystats.bin is nothing more than stats audit. Now if you think you can't actually re-calibrate battery and project that data than your a fool. It has nothing to do with that file.
First of all to accurately predicate it you need a true daemon that's capable of tracking system data with full autonomy access. Second you need correct battery specs from the manufacturer. As reading memory from it may or not even be supported by the device kernel if its not allocated. Thus you see issues with cross link batteries on stock roms, but some is exceptional with similar size, specs.
Now to project the correct data from ~1-100% you need to fully discharge for it to cycle. Yes I know some of you maybe saying never fully discharge Li-Io but if you know the min mV rating then you can stop near suggested mV as it won't go below and damage cells. From then the duration of full charge is defined along with total available mAh. By calculating discharged -mA draw pre scale unit over empty estimation you can predict the true battery percentage.
Ex: ATM my uptime is 14h 47m at 65% with moderate usage (talk, txt, web). Since I have MP1650mAh battery I'm currently at 1072mAh. As its drawing -90mA per scale unit with 4156mV. At this current rate fully projected empty estimation is 9h 38m. Keep in mind my deviceis highly optimized and is on very aggressive battery saving mode.
Sent from my HTC Glacier
Click to expand...
Click to collapse
http://batteryuniversity.com/learn/article/how_to_prime_batteries
The truth is out there
Sent from my Galaxy Nexus
mark manning said:
http://batteryuniversity.com/learn/article/how_to_prime_batteries
The truth is out there
Sent from my Galaxy Nexus
Click to expand...
Click to collapse
And that is why you don't allow fools to use Google. Do you actually understand or comprehend what was said? Let me ask you this why do you think they "wipe batterystats"? What's the reason for it? lol he thinks you can't predict actual mV/mAh of battery based on mA draw lol now that isfunny. The whole reason of having any UI battery metter was based on what logic? Next time you Google.com something make sure you actually comprehend what was the logic behind it. Hey all THE truth is out there...
Sent from my HTC Glacier
HTC Glacier said:
And that is why you don't allow fools to use Google. Do you actually understand or comprehend what was said? Let me ask you this why do you think they "wipe batterystats"? What's the reason for it? lol he thinks you can't predict actual mV/mAh of battery based on mA draw lol now that isfunny. The whole reason of having any UI battery metter was based on what logic? Next time you Google.com something make sure you actually comprehend what was the logic behind it. Hey all THE truth is out there...
Sent from my HTC Glacier
Click to expand...
Click to collapse
The sad part was I was backing up on what you said. Calm down read it in lame mans terms before you trip.
Sent from my Galaxy Nexus
Man, its getting hot in here. Lol.
Ok, so, if wiping battery stats is useless because it does NOTHING to the battery, is there a way to address the battery and force it to allow a slight overcharge on a regular basis, thereby shutting charging off at a higher capacity?
Please forgive my ignorance gentleman, and refrain from verbally bashing me.
I bought a 1550 mAh Anker battery. If I charge it to 100% and then use it, it stays at 100% for hours. Is this because my phone is waiting for it to drop below 1400 mAh, or what? If that's the case can I somehow tell my phone to consider 1550 mAh 100%?
I ask because of the mugen power app on the market. It intrigued me. Though there is a chance its a bunch.of balogna.
Sent from my HTC Glacier using XDA App
mark manning said:
The sad part was I was backing up on what you said. Calm down read it in lame mans terms before you trip.
Sent from my Galaxy Nexus
Click to expand...
Click to collapse
sorry I knew that was another possibility, my mistake. I thought the link you posted some how undermines what I said as you quoted me. As I only posted how to accurately predict and report battery data. Also I think you know who I am...
estallings15 said:
Man, its getting hot in here. Lol.
Ok, so, if wiping battery stats is useless because it does NOTHING to the battery, is there a way to address the battery and force it to allow a slight overcharge on a regular basis, thereby shutting charging off at a higher capacity?
Please forgive my ignorance gentleman, and refrain from verbally bashing me.
I bought a 1550 mAh Anker battery. If I charge it to 100% and then use it, it stays at 100% for hours. Is this because my phone is waiting for it to drop below 1400 mAh, or what? If that's the case can I somehow tell my phone to consider 1550 mAh 100%?
I ask because of the mugen power app on the market. It intrigued me. Though there is a chance its a bunch.of balogna.
Sent from my HTC Glacier using XDA App
Click to expand...
Click to collapse
That is THE prime reason people "wipe batterystats.bin" thinking it would fix staying for hours at 100% delay and heavy drop in short time. Which is sign of missing true data. Normally its measured via min/max mV and available mAh. Now by subtracting the used mA per scale unit the empty estimation is calculated. Thus projecting power draw at given duration and near accurate battery metter.
Sent from my HTC Glacier
HTC Glacier said:
sorry I knew that was another possibility, my mistake. I thought the link you posted some how undermines what I said as you quoted me. As I only posted how to accurately predict and report battery data. Also I think you know who I am...
That is THE prime reason people "wipe batterystats.bin" thinking it would fix staying for hours at 100% delay and heavy drop in short time. Which is sign of missing true data. Normally its measured via min/max mV and available mAh. Now by subtracting the used mA per scale unit the empty estimation is calculated. Thus projecting power draw at given duration and near accurate battery metter.
Sent from my HTC Glacier
Click to expand...
Click to collapse
kinda wondered if that was you, didnt have your typical avatar tho
Sent from my Galaxy Nexus
So with this being said then you don't have to worry about your battery percentage between flashing roms?
The battery life should be still accurate?
I have a 1700mah
Sent from my HTC Glacier using xda premium
HTC Glacier said:
That is THE prime reason people "wipe batterystats.bin" thinking it would fix staying for hours at 100% delay and heavy drop in short time. Which is sign of missing true data. Normally its measured via min/max mV and available mAh. Now by subtracting the used mA per scale unit the empty estimation is calculated. Thus projecting power draw at given duration and near accurate battery metter.
Sent from my HTC Glacier
Click to expand...
Click to collapse
Yes, of course it is the prime reason. My question was, is there a way to tell the phone that 1550 is 100% or do I just deal with inaccurate monitoring that is based on a 1400 mAh battery?
Or, alternatively, will android figure it out over time and adjust for me?
Sent from my HTC Glacier using XDA App
answer me this: why in miui does the hardware led light up green when miui tells me im only at 90%? when i check the mv with the battery calibration app it tells me im at 4220 which is a full charge...what makes miui not see that the battery is full?
Before battery calibration, regardless of what happens, I was getting 9 hours, light usage. After battery calibration I get 19 hours, medium use. I'll stick with it with my thick headed self.
Sent from my HTC Glacier using xda premium
Hi there,
I am hoping that there are some "Battery Monitor Widget" (BMW) users with us, and that you would share your values which BMW is detecting.
As far as I understand and can tell the Transformer does not report measured mAh values and BMW does some estimations and calculations by monitoring over a long time.
After a month or so my TF101G showed an estimated capacity of 23614 mAh ... you get it that I am confused. Therefor I am asking you to post your values, eg. with a screenshot of the "Calibration" page of BWM.
As far as I can tell, nobody has posted these values, at least not @XDA. So this would really be interesting, maybe also for 3c (author of BMW).
Greetings,
- Stephen
"Bump"
Really no one willing to share their battery's capacity as reported by Batter Monitor Widget (BMW)?
forcemaker said:
Really no one willing to share their battery's capacity as reported by Batter Monitor Widget (BMW)?
Click to expand...
Click to collapse
Hey man, I'm not much of a pro of this widget, i downloaded it yesterday but may I ask, in your Settings-Monitoring-Battery Capacity(mah), what is written there exactly?
Installed it on my Motorola Defy and it work superbly... But in my TF101, it doesn't seemed to show the details I expected.
The battery capacity, what do you enter here? Is the BMW detect the dock battery?
I'd run it over two days but the data shows doesn't seemed to be right, so uninstalled it..
If you have any proper steps or ways to make it work in TF101.. please write here.
Sent from my Transformer TF101 using XDA Premium HD app
In battery capacity option, you write your battery mah as you know it. I got extended 3500 mah so I wrote 3500 there, measured the mah with the app using the app for a day, it said 4580 mah. Well, there is no way that is right
I'm gonna use the app for some day, see if the measured mah is gonna change.
The app can not read the externals battery, it seems to be totally unaware. It also seems to register any power from the keyboard dock's battery as an external charger.
As the TF101 does not report measured mAh values as other devices do (e.g. my HTC Desire Bravo A8181) it uses estimates from the OS system logs (as far as I understand).
The app's author suggests - at best - a maximum complete discharge/charge cycle for guessing accurate values (maybe it's the other way around: first fully charge, then discharge; or it doesn't matter; but: do no discharge your Li-Ion battery completely as this is known to harm Li-Ion's (e.g. batteryuniversity, dont know their reliability), try at least a charge cycle of 50%)
It took quite some time until my mAh value stabilized at the value of 23614mAh that I got. For about 2 weeks the value was rising and stopped then at 23614mAh.
Yes, as I remember the mAh-value you are asked for at e.g. the first use is an estimation/hypothetical temporary value used for calculations and which will be corrected with the measured/estimated values over time.
The app and it terms are in some cases confusing/unclear without reading the docs which can be found here and are quite enlighting. In general I use this app a lot on my Desire where it measured the battery's capacity with 14xx mAh which is a little more than the expected capacity claimed by HTC (and I treated my battery quite well).
About the capacity of an Asus TF101(G): I left my tablet running under these cirumstances (the first time accidentially, the second time planned):
flight mode on (no 3g, wifi, bluetooth, me telling you just because you can enable the latter two even in flightmode!)
screen set to lowest value
no apps except battery monitor run on purpose (background tasks left untouched)
OS 3.2.1 stock ROM completely untouched (only the OTA which gave me this OS version)
The results of this test:
from 100% battery to 8% battery within 8 hours 20 min
the battery usage screen of Android control panel showed following "distribution" of power:
Screen: 86%
Android OS: 11%
Android System: 3%
no other entries!
My (quick) conclusion of this test is: as Asus promotes this device with about 8 hours of HD video playback (which I expect to be a processor sucking task) on one charge, without keyboard dock, and as other sites with this' tablet reviews report the same, my device underperforms "highly".
(Sorry, I did not start reading the - for sure - existing threads about battery life in this forum, as I "hoped" that a simple comparison of "Battery monitor widget" values would enlighten me. But, for sure I have to dive into these discussions.)
Uploaded images (thumbnails below) may be unreadable and are posted here for your convenience:
http://imgur.com/a/FJ2Xx#2
Hi guys,
Is it possible to check the real time (live) battery mAh? Sometime battary percentage bar is quiet confusing especially for ppl who have many phones(not me) because different phone have different size of battery and it is very confusing if the battery is enough for his/her day.
If you not understand what i mean "live/real-time battery mAh", you can refer to the screenshot: tinypic.com/r/2i94bww/9
As shown in the red box, miui default security app accually have the function of tracking how much mAh the battery is, however it is not real-time/live and it will be great if anyone can suggest any app that can do this. If there is no app have this function, maybe this is a suggestion to apps developers.