Develop Bugs

[Q] Gingerbread huge battery drain

This seems strange.Yesterday after upgrading to gingerbread ( with the RUU because the OTA didn't work for me) I got a huge battery drain.Over the night I got a loose of 40% and now only 3 hours after unplugged and lost 20%.
I only took a few pictures and a phone call.
Only few apps installed since i got this rom since only yesterday.
Anybody experienced this and is there a fix?

Hello,
I can confirm this.
I have also a high battery drain with ALL Android 2.3.* ROMs.
I use the recommend Radio for each ROM and I've checked the RIL to be sure the Radio is correct. But doesn't matter, current in StandBy is between 30 and 50mA.
Only if I turn off WLAN and Mobile Intenet, then I have normal values between 3 and 5mA.
With FroYo I can leave WLAN and Mobile Internet enabled and I had 3-5mA in StandBy
It could not be an application, because I've tried this with a fresh install without Google account to avoid the installation of external apps.

Crusoe86 said:
Hello,
I can confirm this.
I have also a high battery drain with ALL Android 2.3.* ROMs.
I use the recommend Radio for each ROM and I've checked the RIL to be sure the Radio is correct. But doesn't matter, current in StandBy is between 30 and 50mA.
Only if I turn off WLAN and Mobile Intenet, then I have normal values between 3 and 5mA.
With FroYo I can leave WLAN and Mobile Internet enabled and I had 3-5mA in StandBy
It could not be an application, because I've tried this with a fresh install without Google account to avoid the installation of external apps.
Click to expand...
Click to collapse
you'd have to edit the build.prop and change the rescan time from 15 seconds to 30, 60, 90 or 120 (or whatever you perfer the rescan intercal to be at)

Crusoe86 said:
Hello,
I can confirm this.
I have also a high battery drain with ALL Android 2.3.* ROMs.
I use the recommend Radio for each ROM and I've checked the RIL to be sure the Radio is correct. But doesn't matter, current in StandBy is between 30 and 50mA.
Only if I turn off WLAN and Mobile Intenet, then I have normal values between 3 and 5mA.
With FroYo I can leave WLAN and Mobile Internet enabled and I had 3-5mA in StandBy
It could not be an application, because I've tried this with a fresh install without Google account to avoid the installation of external apps.
Click to expand...
Click to collapse
Try resetting the battery stats by doing the whole charge, lead out, charge, turn off, charge etc. thing.
Also, whilst not a stock RUU I did find it took a few days for the battery drain to calm down a bit. First instal lowest was around 50mA but adfter a fe days it went down to 4-5mA.

JSLEnterprises said:
you'd have to edit the build.prop and change the rescan time from 15 seconds to 30, 60, 90 or 120 (or whatever you perfer the rescan intercal to be at)
Click to expand...
Click to collapse
Thank you for your help
What does that value do?
Is that the rescan value of WLAN?
The current stays high even if WLAN is off and mobile internet is on.
Only if both are disabled I get a low StandBy current.
Mr_JMM said:
Try resetting the battery stats by doing the whole charge, lead out, charge, turn off, charge etc. thing.
Also, whilst not a stock RUU I did find it took a few days for the battery drain to calm down a bit. First instal lowest was around 50mA but adfter a fe days it went down to 4-5mA.
Click to expand...
Click to collapse
Thank you, too
Yes I know this, and I've tried this every time I was flashing a ROM (I mean reset the battery stats)
After a few days? How many days do you mean? 2, 3, 4, 5 days?
@both
But why this problem does not exist on froyo?

Crusoe86 said:
After a few days? How many days do you mean? 2, 3, 4, 5 days?
Click to expand...
Click to collapse
Varies but on average I find it takes about 3 days to settle to a point where I see a consistent drain.
Crusoe86 said:
But why this problem does not exist on froyo?
Click to expand...
Click to collapse
Unknown. It's not 100% due to GingerBread as I've only seen a handful of people complain of this issue (relatively speaking). I see more people saying how much better their battery life is after the update than saying it's poorer.
Doesn't help I know but makes me believe that this is maybe a Network / Radio issue in that the new Radio with GB does not play well with the Network. We had this a few times on the HTC Hero.

Ok...i have airplane mode on for about 2 days.in those 2 days i almost didn't use the phone and got only a 7% lose.As soon as i used the camera(recorded around 15 min) it got down to 50% .
I will test it tonight widought airplane mode on and see the resoults.Also wifi seems to a lot of battery in comparance to froyo.
Sent from my Desire HD using XDA App

I haven't noticed these problems with CM7. I got 2.5-3 hours per 1% of drain in standby using juice defender.
If you are finding that turning off data etc is fixing the problem use juice defender. Even the free version will help a lot as it will stop your phone using data willynilly and instead turn it to a periodic sync. With the paid version you can have it stop all together during certain periods or increase doing certain periods. Aka stoping at night and extra during busy hours at work.
Should be a good fix, though it is only covering up the underlying problem still.
Can't really recommend the app enough. With it my phone only uses data when I tell it to (like opening facebook app) or periodicaly to sync and check emails etc. I do use the paid version though for the extra features.

totally agree. i have been using juice defender for about a week. its been a big help. just bought the ultimate a few min ago. going to start customizing.
sorry that i dont have any data yet to back up my statement. maybe in a future post.
Sent from my ThunderBolt using XDA Premium App

im using Leedroid 3.0.3 and i dont get any such battery drain..
tbh im getting a better battery life from GB than from froyo..
on standby currentwidget shows me between 4-7ma with wifi on... with a peak once in a while..and i lose abt 1 to 1.5% per hour
with wifi off i get about 3-5ma..
i dont use mobile data much so cant really comment on that..
try calibrating your battery and try changing the scan interval in the build.prop... i normally keep it at 90...
i never used any battery saving apps, so cant comment on their performance either...
go to wifi advanced settings and untick Best Wifi Performance... that also helps a lot!
hope you get your problem sorted

Thank you all for the help
The issue was not with gingerbread...I just left my phone one night with wifi turned on and lost 40%.But still when I was on Froyo wifi wouldn't loose so much battery.Now I loose almost 2-3% every 15 min if surfing the web with wifi.
And about changing the scan interval in the build.prop...How can I do that?Do I need root?

I'm also having battery problems, but mine are a little bit different, if I'm on wifi it uses between 3 to 5% with a peak now and then. if wifi is off and I'm on 3g, it's between 5 and 500 ma and you see only peaks if you check currentwidget. anyone a clue? working on ARHD 5.1.6 now, but problem was there since version 3

I have battery problems also, my battery dries after 1 day of use. For example this morning, I unplugged my phone full from the charger at 10 am. I went into town, listened to about 20 minutes of FM radio. When i stopped the radio, I still had 98% left of the battery. OK so far. After, I talked for about 5 minutes, sent 4 messages and played for about 15 minutes. I arrived home at 2 pm with 75% of battery left. That is 25% in 4 hours.
I was on 3G, but with Mobile network off. BT, WIFI, GPS off. A few days ago, I tried running the Battery Calibration app, but seen no improvements so far. My phone is routed, 2.3.3 and has Android Revolution HD 5.0 RC1 ROM .
I expected the battery not to last for long, but this is ridiculous.
Help me, please!

I don't know if that will help, but I sometimes switch to 2G networks as HSDPA is using quite a lot the battery.
I have a DHD running 2.3.3, and it's definitely the mobile standby bit which is first in the battery use screen (33%). It was true before 2.3xx but now it's a bit more - annoying in other words.
I have to admit, having to switch to 2G networks is a bit of a pain in the *ss, so I'll check if juice defender give me some good results tomorrow and will post a feedback there.

Maybe try AR 5.1.6. + he recommended radio. It works wonders. the battery life is improved a lot...
malik

Juice Defender works very well - with basic settings I still have 35-40% of battery by 7pm.

furstrated with the battery life...
hey guys,
so this is my first post and all i've done up until now was to read... i'm afraid not real solution has come up.
i have:
Leedroid 3.1.2 with the recommended radio and i ran the script for Full Wipe 1.5 and cleared the battery stats, i did a fresh install and then didnt restore from backup - just installed everything from scratch. i hoped it would be ok, but when i woke up to check the current widget log, i saw that in the middle of the night he climbed to 150mA and stayed there draining about a 1% of battery in 3-4 minutes (!!!)
what can i do? 'where is my droid power' shows only HTC Sense at about 3.8%
please please help... thanks!

[Q] Jellytime ROM on DHD - battery drain

How much does your Jellytime ROM drain from battery? Using battery e.g. Battery monitor widget, I can see 60mA drain when phone is standby. Seems to be a lot for me. I didn't find comparsion just subjective claims - high/low drain. 60mA is with wifi turned off, bt disables, no gprs/3g data, just standby. No application seems to be running. Battery stat shows that 60 % is display (but I can confirm that display is off), 40 % cell stand by and about the same amount phone idle.

You can try BetterBatteryStats to check what might be draining your battery (if any).
Here's the link to the beta version for xda users: http://forum.xda-developers.com/showthread.php?t=1179809

xbiggyl said:
You can try BetterBatteryStats to check what might be draining your battery (if any).
Here's the link to the beta version for xda users: http://forum.xda-developers.com/showthread.php?t=1179809
Click to expand...
Click to collapse
Thanks, I will try it. So far I was using Battery Monitor apk. However, I have no reference if my battery drain level is expected for that rom or not.

I'm also having issues with battery drain on JT... really strange. It seems to have drain when in standby, and when the screen is on it goes like crazy, I can't get more than like 20-30 minutes of screen-on time. I really like this ROM, it is pretty stable and works fine, no major bugs but the battery drain is crazy. I took a couple of screenshots. It seems that process Media is keeping it "awake" and causing battery drain. In all other ROMs I used (and in stock) I have never seen any other process except SCREEN using more than couple of percent of battery. Now this media process is using almost as screen! Any clues as what it is?
Also, I noticed that it discharges quickly when screen is on, but it also charges quickly! Something wrong with battery stats? It simply can't go from 20% to 70% in 10 minutes while charging?

xhejtman said:
How much does your Jellytime ROM drain from battery? Using battery e.g. Battery monitor widget, I can see 60mA drain when phone is standby. Seems to be a lot for me. I didn't find comparsion just subjective claims - high/low drain. 60mA is with wifi turned off, bt disables, no gprs/3g data, just standby. No application seems to be running. Battery stat shows that 60 % is display (but I can confirm that display is off), 40 % cell stand by and about the same amount phone idle.
Click to expand...
Click to collapse
Its about 1% per hour about the battery drain..quite good battery with usage

KeshavJave said:
Its about 1% per hour about the battery drain..quite good battery with usage
Click to expand...
Click to collapse
Hmm, could you provide mA value (battery monitor shows it in history in 10 minutes intervals..)

I can do five hours with normal use on a full charge..

These are battery stats for my DHD. The first one is standby over night with stok HTC ROM (2.3.5), the second one is with JellyTime ROM 9.1. It takes 10times more power.

marclooman9 said:
I can do five hours with normal use on a full charge..
Click to expand...
Click to collapse
That's not much. Was it better as long as you can remember with stock HTC ROM? I could do 2-3 days with normal use with stock ROM.

xhejtman said:
That's not much. Was it better as long as you can remember with stock HTC ROM? I could do 2-3 days with normal use with stock ROM.
Click to expand...
Click to collapse
Wow 2 to 3 days? Last time I had a phone like that was back in non smart phone days...

ai6908 said:
Wow 2 to 3 days? Last time I had a phone like that was back in non smart phone days...
Click to expand...
Click to collapse
Yes, but my cost for 2-3 days is: no gsm data, no wifi (or wifi for something like 5 minutes), no widgets except htc clock & weather, almost no background apps, few phone calls, moderate number of sms. (Yes I hear you saying, you don't need 'smart' phone , I do, I use some apps but not too frequently, so avg running time from 100% to say 10% of battery was 2-3 days, mainly depending on number of sms sent

I had it charged to 100%. Then I kept it charging, went to recovery and deleted battery stats. I booted and when it displayed lock screen I unplugged. Then I played for like 10 minutes (screen on) and my battery went from 100% to 88% !!! A bit too much? I installed betterbatterystats so I hope I'll see which process keeps it awake (there's drain even when screen off)...
D.

dalanik said:
I had it charged to 100%. Then I kept it charging, went to recovery and deleted battery stats. I booted and when it displayed lock screen I unplugged. Then I played for like 10 minutes (screen on) and my battery went from 100% to 88% !!! A bit too much? I installed betterbatterystats so I hope I'll see which process keeps it awake (there's drain even when screen off)...
D.
Click to expand...
Click to collapse
perhaps try to install: http://play.google.com/store/apps/details?id=ccc71.bmw
it provides history of current consumption, that can tell whether it is a lot or not.
Btw, what do you exactly mean by "played for 10m"? What did you do?

xhejtman said:
Btw, what do you exactly mean by "played for 10m"? What did you do?
Click to expand...
Click to collapse
Thanx for the tip, I'll try installing the app you suggest. "Played" means I turned the screens on louncher a couple of times to update all widgets, went into settings, looked at the battery stats etc. Maybe lounched foursquare and titanium backup, nothing really intensive... Here are shots from batterystats. Seems to me media service is doing it...

dalanik said:
Thanx for the tip, I'll try installing the app you suggest. "Played" means I turned the screens on louncher a couple of times to update all widgets, went into settings, looked at the battery stats etc. Maybe lounched foursquare and titanium backup, nothing really intensive... Here are shots from batterystats. Seems to me media service is doing it...
Click to expand...
Click to collapse
yes media service seems to be suspicious. It says, the phone was in deep sleep only half an hour for last hour while screen on was really only for about 10 minutes. I think the problem is in remaining time. I am not really familiar with bbs logs, maybe post the log into BBS thread here on XDA for help if you cannot figure it yourself.

dalanik said:
I had it charged to 100%. Then I kept it charging, went to recovery and deleted battery stats. I booted and when it displayed lock screen I unplugged. Then I played for like 10 minutes (screen on) and my battery went from 100% to 88% !!! A bit too much? I installed betterbatterystats so I hope I'll see which process keeps it awake (there's drain even when screen off)...
D.
Click to expand...
Click to collapse
There is no need for wiping battery stats.
Once your phone recharges to 100%, battery stats reset by default.

xbiggyl said:
There is no need for wiping battery stats.
Once your phone recharges to 100%, battery stats reset by default.
Click to expand...
Click to collapse
I know, I read that somewhere, but just wanted to be sure This is really driving me nuts, I always have to be near charger

xbiggyl said:
You can try BetterBatteryStats to check what might be draining your battery (if any).
Here's the link to the beta version for xda users: http://forum.xda-developers.com/showthread.php?t=1179809
Click to expand...
Click to collapse
Ok, I figured out, what is causing high battery drain. It FM radio. After clean flash and basic setup, it consumes 10mA when standby. Which is twice more than with stock ROM, but seems to be acceptable. If I run and then exit Sprite FM radio app, phone starts to consume 60mA until reboot. After reboot, it is ok, until I run Sprite FM app again.
However, BBS does not show anything useful. Maybe because of FM HW keeps running? There is shown no SW battery eater..

I still can't figure it out Here's log of consumptuon in standby from last night, I have it set on profile manager to turn off data and set airplane mode from 1am-7am. Looks good to me, can someone confirm these are OK values?
Code:
2012/09/24|00:28:43|587mA|60%|4182mV|34.0ºC|.258|1
2012/09/24|00:29:43|529mA|60%|4182mV|34.0ºC|.100|1
2012/09/24|00:39:43|-61mA|60%|3869mV|32.0ºC|.256|2
2012/09/24|00:49:43|-11mA|59%|3960mV|27.0ºC|.0|0
2012/09/24|00:59:43|-28mA|59%|3957mV|25.0ºC|.0|0
2012/09/24|01:09:43|-18mA|59%|3960mV|23.0ºC|.0|0
2012/09/24|01:19:43|-8mA|59%|3957mV|22.0ºC|.0|0
2012/09/24|01:29:43|-10mA|58%|3940mV|22.0ºC|.0|0
2012/09/24|01:39:43|-13mA|58%|3955mV|21.0ºC|.0|0
2012/09/24|01:49:44|-7mA|58%|3955mV|21.0ºC|.0|0
2012/09/24|01:59:43|-7mA|58%|3955mV|21.0ºC|.0|0
2012/09/24|02:09:43|-7mA|58%|3955mV|21.0ºC|.0|0
2012/09/24|02:19:43|-7mA|58%|3955mV|21.0ºC|.0|0
2012/09/24|02:29:43|-7mA|57%|3945mV|21.0ºC|.0|0
2012/09/24|02:39:43|-7mA|57%|3945mV|20.0ºC|.0|0
2012/09/24|02:49:44|-7mA|57%|3945mV|20.0ºC|.0|0
2012/09/24|02:59:43|-7mA|57%|3945mV|20.0ºC|.0|0
2012/09/24|03:09:43|-7mA|57%|3945mV|20.0ºC|.0|0
2012/09/24|03:19:43|-7mA|57%|3945mV|20.0ºC|.0|0
2012/09/24|03:29:44|-7mA|56%|3935mV|20.0ºC|.0|0
2012/09/24|03:39:43|-7mA|56%|3935mV|20.0ºC|.0|0
2012/09/24|03:49:43|-7mA|56%|3935mV|20.0ºC|.0|0
2012/09/24|03:59:43|-7mA|56%|3935mV|20.0ºC|.0|0
2012/09/24|04:09:43|-7mA|56%|3935mV|20.0ºC|.0|0
2012/09/24|04:19:43|-7mA|56%|3935mV|20.0ºC|.0|0
2012/09/24|04:29:43|-7mA|55%|3925mV|20.0ºC|.0|0
2012/09/24|04:39:43|-7mA|55%|3925mV|20.0ºC|.0|0
2012/09/24|04:49:43|-7mA|55%|3925mV|20.0ºC|.0|0
2012/09/24|04:59:43|-7mA|55%|3925mV|20.0ºC|.0|0
2012/09/24|05:09:43|-10mA|55%|3925mV|20.0ºC|.0|0
2012/09/24|05:19:43|-7mA|55%|3925mV|20.0ºC|.0|0
2012/09/24|05:29:43|-13mA|55%|3925mV|20.0ºC|.0|0
2012/09/24|05:39:43|-7mA|54%|3911mV|20.0ºC|.0|0
2012/09/24|05:49:44|-7mA|54%|3911mV|20.0ºC|.0|0
2012/09/24|05:59:43|-12mA|54%|3911mV|20.0ºC|.0|0
2012/09/24|06:09:43|-7mA|54%|3911mV|20.0ºC|.0|0
2012/09/24|06:19:43|-7mA|54%|3911mV|20.0ºC|.0|0
2012/09/24|06:29:43|-7mA|53%|3891mV|20.0ºC|.18|0
2012/09/24|06:39:43|-7mA|53%|3891mV|20.0ºC|.0|0
2012/09/24|06:46:44|-210mA|53%|3740mV|21.0ºC|.0|0
2012/09/24|06:56:44|356mA|57%|4187mV|24.0ºC|.3|6
2012/09/24|07:00:44|-264mA|71%|3816mV|25.0ºC|.360|2
2012/09/24|07:10:44|-254mA|51%|3721mV|24.0ºC|.1000|0
2012/09/24|07:20:44|-32mA|36%|4174mV|24.0ºC|.736|6
2012/09/24|07:30:44|397mA|75%|3933mV|26.0ºC|.3|2
2012/09/24|07:40:44|-61mA|73%|3784mV|26.0ºC|.76|0
2012/09/24|07:50:44|-121mA|63%|3779mV|26.0ºC|.450|0
2012/09/24|08:00:44|-233mA|44%|3730mV|26.0ºC|.998|0
2012/09/24|08:10:44|-125mA|37%|3769mV|27.0ºC|.200|0
2012/09/24|08:19:36|607mA|55%|3850mV|27.0ºC|.1|1
2012/09/24|08:29:35|611mA|64%|4187mV|28.0ºC|.130|1
2012/09/24|08:39:35|426mA|69%|4189mV|28.0ºC|.0|1
2012/09/24|08:49:18|136mA|94%|4087mV|27.0ºC|.8|3
But look at the 2nd attached screenshot, at the end of the graph - how fast it charges, isn't that unusual?

Code:
2012/09/24|00:28:43|587mA|60%|4182mV|34.0ºC|.258|1
2012/09/24|00:29:43|529mA|60%|4182mV|34.0ºC|.100|1
charging at rate 500-600mA, is it external charger? I do charging on ntb and it's up to 400mA when battery is not close to 100%.
Code:
2012/09/24|00:39:43|-61mA|60%|3869mV|32.0ºC|.256|2
2012/09/24|00:49:43|-11mA|59%|3960mV|27.0ºC|.0|0
2012/09/24|00:59:43|-28mA|59%|3957mV|25.0ºC|.0|0
2012/09/24|01:09:43|-18mA|59%|3960mV|23.0ºC|.0|0
2012/09/24|01:19:43|-8mA|59%|3957mV|22.0ºC|.0|0
2012/09/24|01:29:43|-10mA|58%|3940mV|22.0ºC|.0|0
2012/09/24|01:39:43|-13mA|58%|3955mV|21.0ºC|.0|0
seems to be of slight using or runnign backgroud processes this hour?
Code:
2012/09/24|01:49:44|-7mA|58%|3955mV|21.0ºC|.0|0
2012/09/24|01:59:43|-7mA|58%|3955mV|21.0ºC|.0|0
2012/09/24|02:09:43|-7mA|58%|3955mV|21.0ºC|.0|0
this is expected consumption, with stock HTC ROM I got -3 - -5mA, but -7mA is pretty good. With R10 I got -10mA, don't know why it does sleep less than it should.
Code:
2012/09/24|06:46:44|-210mA|53%|3740mV|21.0ºC|.0|0
2012/09/24|06:56:44|356mA|57%|4187mV|24.0ºC|.3|6
2012/09/24|07:00:44|-264mA|71%|3816mV|25.0ºC|.360|2
2012/09/24|07:10:44|-254mA|51%|3721mV|24.0ºC|.1000|0
what happened here? -264mA is a lot of power consumption, do you remember what did you do? Common usage should be around -100mA.

[Q] HTC DHD 4.2.2R8 drain battery so much

Hi everyone!
I'm using JellyTime 4.2.2R8 on my DHD.
It's working fast but battery drain so much.
Ex: I only view screen, scroll something. Everage 1 minute, battery degree 1-2%
Who can help optimize this problem?, thanks!

banghn said:
Hi everyone!
I'm using JellyTime 4.2.2R8 on my DHD.
It's working fast but battery drain so much.
Ex: I only view screen, scroll something. Everage 1 minute, battery degree 1-2%
Who can help optimize this problem?, thanks!
Click to expand...
Click to collapse
Hi,
I installed JellyTime R8 on Monday evening, and I haven't experienced such a battery drain so far, it goes down a bit faster than my stock Gingerbread+Sense ROM. I might have other stats issues (wrong "on battery" duration, charge stuck at 90%...), but no drain so far.
I am not well experienced in flashing ROMs and how to solve problems, but I have seen lots of people advising to flash the battery stats and recalibrate. But you need a few complete charge/discharge cycles to make it work properly. (But according to a few other people, it's a kind of religious belief too...)
You can also install a more precise battery stats app. I saw a more detailed message in Jellytime Dev thread (in one of the last pages). If I find it again, I let you know.

BetterBatteryStats
banghn said:
Hi everyone!
I'm using JellyTime 4.2.2R8 on my DHD.
It's working fast but battery drain so much.
Ex: I only view screen, scroll something. Everage 1 minute, battery degree 1-2%
Who can help optimize this problem?, thanks!
Click to expand...
Click to collapse
I cannot find again the thread/post where I saw this information, but the application some people advise to use is BetterBatteryStats.
To give you a counter example: since I flashed JellyTime R8 (Monday 20th Mai, 23h GMT+1), I fully charged my phone only twice.
The first discharge took almost a day (but I used it a lot, configuring and playing with the new features).
The second discharge started 33 hours ago and I still have 50% as we speak. Maybe the stats are wrong, but the phone is still ON after 33hours. I'll let you know how long it lasts.
I am on GSM roaming all day long, but my phone stays most of the time in standby mode.
A few things that I've done to optimize the battery life:
- remove the constant location-tracking, both GPS and 3G (especially as GPS is not working since I flashed JT R8);
- remove permanent/auto 3G connection, as I am spending all the day abroad, it is useless to keep 3G activated, without data roaming on.
Go in Settings/location and switch the toggle off.
Go in Settings, expand Wireless and Networks (Plus), then Mobile Networks and untick the first box (my ROM is in french so I am not 100% sure of the translation, it might be something like Activate Data)

Matth59 said:
....
Click to expand...
Click to collapse
Thanks Matth59 !
I toggled off some setting in phone (GPS, MobileData, effect screen, animation, turn off notification some app...)
But but it does not improve the problem of battery.
I charged full battery, after 24minutes
Saw status of battery on 24m19s, (95%)
Screen 70% (I set bright of screen about 20-30%)
Cell standby 6%
Android system 5%
Phone idle 5%
Wifi 3%
Facebook 3%
Android OS 2%
Media server 2%

banghn said:
Thanks Matth59 !
I toggled off some setting in phone (GPS, MobileData, effect screen, animation, turn off notification some app...)
But but it does not improve the problem of battery.
I charged full battery, after 24minutes
Saw status of battery on 24m19s, (95%)
Screen 70% (I set bright of screen about 20-30%)
Cell standby 6%
Android system 5%
Phone idle 5%
Wifi 3%
Facebook 3%
Android OS 2%
Media server 2%
Click to expand...
Click to collapse
And how long does it usually take for it to be discharged?
The second time I charged it, it said that charge was complete and stopped charging at 90%, and I got the impression that it reached that level quite fast. But the device is still on, after 38 hours.
I hope somebody with more experience in that field can give you a better advice or more information, than just flashing the battery stats and recalibrate it.

After one week of using R8, this is how battery is going for me.
On standby, it can last as long as it used to with the stock Sense + Gingerbread ROM (or even a bit more, but maybe because I haven't reinstalled all my apps).
When using the phone, battery life is going down quite fast, and I am not sure if it can last more than 1 day of normal use (3g, mails, messages, calls...).
The most battery consuming task is the screen. It makes me wonder if it could be related to the feature that was introduced by Google since JellyBean 4.1: Project Butter, which makes everything smooth in Android.

[Q] HTC desire 816 battery drain

please 816 users , tell me your battery drain through night when you're just sleeping till the next morning ??

Gharbawy said:
please 816 users , tell me your battery drain through night when you're just sleeping till the next morning ??
Click to expand...
Click to collapse
In standby overnight, maybe 3-5% battery drain. A lot of things come in play though such as what apps you have installed, if your on LTE, or 3g, or wifi, or even go into airplane mode at night, etc.

FoxyDrew said:
In standby overnight, maybe 3-5% battery drain. A lot of things come in play though such as what apps you have installed, if your on LTE, or 3g, or wifi, or even go into airplane mode at night, etc.
Click to expand...
Click to collapse
first of all , I'd like to thank you for your reply ..
I've bought a new desire 816 two days ago and I can notice something wrong with the battery as it drains faster than normal
and it gives false percent as it increases after restarting the phone ..
I've tried to calibrate the battery by letting in turn off by itself then recharging it to 100% but then I realized It's still giving me false number
I don't know what to do ... It would be great if you can help

Gharbawy said:
please 816 users , tell me your battery drain through night when you're just sleeping till the next morning ??
Click to expand...
Click to collapse
my friend has the same. i will update you if he finds any solution

Gharbawy said:
first of all , I'd like to thank you for your reply ..
I've bought a new desire 816 two days ago and I can notice something wrong with the battery as it drains faster than normal
and it gives false percent as it increases after restarting the phone ..
I've tried to calibrate the battery by letting in turn off by itself then recharging it to 100% but then I realized It's still giving me false number
I don't know what to do ... It would be great if you can help
Click to expand...
Click to collapse
Have you tried a battery calibration app such as the one by NeMa in the PlayStore? It requires root but it basically asks you to charge your device to 100% which is done from empty to max in about 3 hours. At this point you go in the app while its still plugged in and "clear" the batterystats. This is the file that tells the device how much charge it can hold and on some devices this file gets buggy/glitched. It will wipe this file away and generate a new one based on the charge the battery holds at max. It then asks you to use the device as normal until it dies and recharge to full afterwards. This has worked for many and I hope it will work for you as well.
If you have excessive battery drain look at the Power settings and review the usage. If it shows a green line on awake and it doesn't show the same matching the screen on time then you have a background app sucking battery from the device. Facebook and its Messenger are known to be the culprits but if you download Greenify from the PlayStore. It will allow you to hibernate practically every app so there is no battery drain when your device screen is off. In combination with this app I am able to get an average day and a half of use with no charge and normal use with Videos, Music, Facebook, Messenger; etc. I average I use about 6-10 hours on this device with pure stock w/ root & Greenify with battery calibration via app done.
Sent from my 710C using XDA Free mobile app

jaysoblitzed said:
Have you tried a battery calibration app such as the one by NeMa in the PlayStore? It requires root but it basically asks you to charge your device to 100% which is done from empty to max in about 3 hours. At this point you go in the app while its still plugged in and "clear" the batterystats. This is the file that tells the device how much charge it can hold and on some devices this file gets buggy/glitched. It will wipe this file away and generate a new one based on the charge the battery holds at max. It then asks you to use the device as normal until it dies and recharge to full afterwards. This has worked for many and I hope it will work for you as well.
If you have excessive battery drain look at the Power settings and review the usage. If it shows a green line on awake and it doesn't show the same matching the screen on time then you have a background app sucking battery from the device. Facebook and its Messenger are known to be the culprits but if you download Greenify from the PlayStore. It will allow you to hibernate practically every app so there is no battery drain when your device screen is off. In combination with this app I am able to get an average day and a half of use with no charge and normal use with Videos, Music, Facebook, Messenger; etc. I average I use about 6-10 hours on this device with pure stock w/ root & Greenify with battery calibration via app done.
Sent from my 710C using XDA Free mobile app
Click to expand...
Click to collapse
Thank you man for you Reply ..
I've few questions I wish you help with them
1- does this greenify need root also ?
2- I didn't root the phone not to lose my warranty as I was willing to replace it for that battery issue but
If I decided to root it , would you help me with the instructions ?? I mean some trusted way you've already tried
because I don't wanna mess up with the phone .
Thanks in advance !

Gharbawy said:
Thank you man for you Reply ..
I've few questions I wish you help with them
1- does this greenify need root also ?
2- I didn't root the phone not to lose my warranty as I was willing to replace it for that battery issue but
If I decided to root it , would you help me with the instructions ?? I mean some trusted way you've already tried
because I don't wanna mess up with the phone .
Thanks in advance !
Click to expand...
Click to collapse
Yes, Greenify does require root in order to work but it does work flawlessly.
For an visual step by step root guide for this device simply watch this video here!
https://www.youtube.com/watch?v=1NYP7V2ltpI
:good::laugh::good:

I have the same problem… .help plz my phone is w816dug dual sim from Taiwan

Gharbawy said:
please 816 users , tell me your battery drain through night when you're just sleeping till the next morning ??
Click to expand...
Click to collapse
I bought the machine and I have the same problem and searched for a solution and found it, thank God you tried it and it was sharp and Hoaml calibration of the battery as follows
We ship the device to extend not less than 10 minutes and then tend charger and push constantly for 2 minutes and confirmed in 2 minutes Whatever happens from closing and then opening or if something did not happen continued pressing for 2 minutes
Finished battery is completely closed to the device himself
Shipper arrived once again that is shipping 100%
And fill your normal concluded the problem
Thank you

muhamadalani said:
I bought the machine and I have the same problem and searched for a solution and found it, thank God you tried it and it was sharp and Hoaml calibration of the battery as follows
We ship the device to extend not less than 10 minutes and then tend charger and push constantly for 2 minutes and confirmed in 2 minutes Whatever happens from closing and then opening or if something did not happen continued pressing for 2 minutes
Finished battery is completely closed to the device himself
Shipper arrived once again that is shipping 100%
And fill your normal concluded the problem
Thank you
Click to expand...
Click to collapse
pressing which keys ??
can you explain more ?!

@Gharbawy
I had the same inssue ..in my phone htc a5_dug dual sim from Taiwan i waited for solution or any update nothing cameup… then i decided to flash custom roms and was best na now am in custom rom and the problem was off and the only one custom rom which solve my problem ..SVHD+………

Gharbawy said:
pressing which keys ??
can you explain more ?!
Click to expand...
Click to collapse
Unfortunately, the lack of rapid reaction because I was too busy
Pressing the power switch for exactly two minutes and the device will tell you Alglaq Do you want to or not agreed to the demand and calibration Congratulations to you
Thank you

I fixed my battery issue. the exposed software killed mine relating to the same issue i believe you had or have. reporting wrong percentage. once had 50 percent, took it back out of my pocket and within 5 mons i had 4%. wouldnt charge.
Power it off... hold all 3 buttons (power+volume up+volumedown) after 15 seconds it will boot back up. this calibrated my battery. hope this works for you.

Wrong battery percentage report is fixed by HTC on 1.58 rom update. it works fine on 1.58 Rom

My battery on my htc is draining fast I think it went from 100% to 83% percent in like 20 minutes is this normal? I have disabled everything that I'm able to disable on this phone but once it gets to 70% the drainage kinda slows down

High Cpu Usage. Battery Drain on Standby

I recently purchased a P2. Every thing's good. Battery life is also better than most of the phones. But, one thing that I noticed is that Cpu usage is high in idle state too. I did a factory reset. But, the problem persists. I usually get around 8hrs SOT. I think that's lower than most P2's.
Is there a way to solve this? My bootloader is not yet unlocked. Have to wait 12 more days.
Thanks.

Wait 12 more days, unlock the bootloader and flash the DrainFix.zip that can be found in Lineage and RR threads.

911-Future_Maker said:
Wait 12 more days, unlock the bootloader and flash the DrainFix.zip that can be found in Lineage and RR threads.
Click to expand...
Click to collapse
Thanks..

Are you still on Marshmallow ? There was a bug that caused the cpu to stay at 1689mhz on some phones .
And Drainfix wont make any difference . It changes the governor from performance to interactive , but your already on the interactive governor .

The Mero said:
Are you still on Marshmallow ? There was a bug that caused the cpu to stay at 1689mhz on some phones .
And Drainfix wont make any difference . It changes the governor from performance to interactive , but your already on the interactive governor .
Click to expand...
Click to collapse
I am now on nougat. But same problem. Already performed factory reset a couple of times. Cpu doesn't stay on 1689mhz. Now it fluctuates. But, still heavy usage from CPU.
Battery drains by 7-8% overnight.

I already installed Nougat, but the phone is sleeping as dead. Charged it to 95% last night, put it on airplain mode and today in the morning after 9h to battery is still 95%.

The android battery stats show that CPU is awake all time, but BetterBatteryStats shows that everything is fine.
Sent from my Lenovo P2a42 using Tapatalk

bibekdwa said:
I am now on nougat. But same problem. Already performed factory reset a couple of times. Cpu doesn't stay on 1689mhz. Now it fluctuates. But, still heavy usage from CPU.
Battery drains by 7-8% overnight.
Click to expand...
Click to collapse
Mine is dropping in Flight mode too . Its probably the system tuning itself up while its idle , it should settle down in a few days

I have the same problem
Have you found any solution? I purchased it on 21 April 2017 and currently running it on Naugat.

The Mero said:
Are you still on Marshmallow ? There was a bug that caused the cpu to stay at 1689mhz on some phones .
And Drainfix wont make any difference . It changes the governor from performance to interactive , but your already on the interactive governor .
Click to expand...
Click to collapse
Here is how it was for me.
I took phone out of the box with MM preinstalled and right after i turned up the screen and connected to my wifi network it asked me to update OS to Nougat 7.0 so i did. The bug that caused CPU stays at 1.69Ghz occures for 100% on Nougat, and you say on MM too ?
Anyways, for me, hard reset solved the problem, at least this one.
But battery drain still takes place. In normal mode 3-4%, in ultra power saving - 5-6% over night (5-7h). This is pretty a lot i would say.
ps: Phone goes into deep sleep mode according to BetterBatStats.

On p2 i get average SOT of around 13hrs

Antaroo said:
Here is how it was for me.
I took phone out of the box with MM preinstalled and right after i turned up the screen and connected to my wifi network it asked me to update OS to Nougat 7.0 so i did. The bug that caused CPU stays at 1.69Ghz occures for 100% on Nougat, and you say on MM too ?
Anyways, for me, hard reset solved the problem, at least this one.
But battery drain still takes place. In normal mode 3-4%, in ultra power saving - 5-6% over night (5-7h). This is pretty a lot i would say.
ps: Phone goes into deep sleep mode according to BetterBatStats.
Click to expand...
Click to collapse
I had same problem under stock Nougat before i installed the magisk and the crossbreeder mod. Now I have 0-2% battery drain at night.

Vis77 said:
I had same problem under stock Nougat before i installed the magisk and the crossbreeder mod. Now I have 0-2% battery drain at night.
Click to expand...
Click to collapse
What are those mods ? Are they xposed modules ? What do they do ?

Antaroo said:
What are those mods ? Are they xposed modules ? What do they do ?
Click to expand...
Click to collapse
Magisk module:
https://forum.xda-developers.com/apps/magisk/tweak-crossbreeder-lite-t3594401

Thanks ill try it once im rooter in 9 days.
So far im very dissapointed with my bateery life. I get 8.5h over 3 days use. It's not really a good result as for such a battery and screen technology.
I counted exactly - 23% of battery went for standby. It's a lot, isnt it ?
Any ideas if its Nougat fault, or bad piece of phone ?

I think u need to drain your battery completely till the phone shuts down then recharge completely while the phone is off then power on and try

Vis77 said:
I had same problem under stock Nougat before i installed the magisk and the crossbreeder mod. Now I have 0-2% battery drain at night.
Click to expand...
Click to collapse
How did you install magisk? Did you root using magisk or using phh superuser? Right now I am rooted with phh.. I would like to change to magisk. Please guide or send link to a guide..
Thanks

spunxhoe said:
How did you install magisk? Did you root using magisk or using phh superuser? Right now I am rooted with phh.. I would like to change to magisk. Please guide or send link to a guide..
Thanks
Click to expand...
Click to collapse
Systemless root under Nougat with magisk:
1. Format data partition to ext4.
2. Type in the recovery terminal :
echo "SYSTEMLESS=true" >> /data/.supersu
3. Flash the magisk12.zip
4. Reboot
5. Install Magisk manager
If you have another su like phh, will not work, you need reinstall the original boot image.

Should be around 0.2%/hr...
Antaroo said:
Thanks ill try it once im rooter in 9 days.
So far im very dissapointed with my bateery life. I get 8.5h over 3 days use. It's not really a good result as for such a battery and screen technology.
I counted exactly - 23% of battery went for standby. It's a lot, isnt it ?
Any ideas if its Nougat fault, or bad piece of phone ?
Click to expand...
Click to collapse
The only way to know the standby drain is normal or not, try install GSam Battery Monitor app...
As shown above, native stock ROM S233 should drain around 0.2% per hour, which in turn to be 0.2% x 8 hours sleep = 1.6% or 1.6% of 5,100mAh is 81.6mAh energy consumption...
Conclusion:
P2a42 can survive in airplane mode for 20 days on a single charge.

azeemzuhair said:
The only way to know the standby drain is normal or not, try install GSam Battery Monitor app...
View attachment 4189280
As shown above, native stock ROM S233 should drain around 0.2% per hour, which in turn to be 0.2% x 8 hours sleep = 1.6% or 1.6% of 5,100mAh is 81.6mAh energy consumption...
Conclusion:
P2a42 can survive in airplane mode for 20 days on a single charge.
Click to expand...
Click to collapse
So, i just checked my Gsam, and here is what is says:
0.7%/h drain in standby which is more or less what im losing of battery juice over night. It's stick Nougat form OTA update.
Right now im at 44% and i switched into ultra power saving mode. It says that i have left around 51h. I dont think this is normal. Isnt it really very little time ?
It's just a little over 2 full days @ 44%
Damn...
Should i return this piece to store with complain i got faulty one ?
Can you please switch to ultra power saving mode just for a second and tell me what did it calculate aproximately as time left on battery ?