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Old 10-30-2018, 01:58 AM   #1
StaticChromatic
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Unhappy Likebook Mars major battery issue

Hey everyone, just received my Likebook Mars yesterday. Set it all up with Google services, downloaded a few apps (Instapaper, Spotify, Libby, Overdrive).

The battery life is ABYSMAL for me. It seems that "Android OS" is using all of it, even when the device is sleeping. Overnight, with wifi/BT off, it lost 35% charge, "Android OS" showing as 120% of drain in the battery settings page.

What is everyone's average for battery life on this thing? What could I be doing wrong?

I like a lot of things about this device, I would love to use it, but this is pretty massive. That's two days of usage to completely drain the battery for me.
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Old 10-30-2018, 06:15 AM   #2
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I have mine configured to power off after 2 hours idle so wouldn't know specifically. However, last week, I read for 3 hours on a plane (Kindle app) and read for 30-60 minutes a night for 5 days and then read again for 2 hours on the flight back and it still had well over 60% charge left.

Maybe you've got some bad process running somewhere ?
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Old 10-30-2018, 10:01 AM   #3
StaticChromatic
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Quote:
Originally Posted by azw409 View Post
I have mine configured to power off after 2 hours idle so wouldn't know specifically. However, last week, I read for 3 hours on a plane (Kindle app) and read for 30-60 minutes a night for 5 days and then read again for 2 hours on the flight back and it still had well over 60% charge left.

Maybe you've got some bad process running somewhere ?
Could you do me a huge favor and tell me about how much % loss you have in a certain span of time while the device is hibernating (not powered off)? And is that with the device in airplane mode? Currently speaking with a developer at Boyue to help them improve the battery life.
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Old 10-30-2018, 04:04 PM   #4
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Do you have WiFi on all the time? I use Tasker to control it for my own purposes but you can set WiFi to turn off after so many minutes of inactivity in the power management settings. If you haven't configured that, I bet that's where most of your battery is going.
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Old 10-30-2018, 11:49 PM   #5
StaticChromatic
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So, I think I've found the culprit. It seems that certain services (location, certain apps, etc.) ping the CPU pretty often when turned on, even with WiFi off. Everything off, with Greenify forcing all apps to hibernate (and the device to enter "doze mode"), in battery saving mode, I reduced the overnight charge from 35% to 1%. That's without the device's "auto-shutdown", which Boyue recommended having on (but I didn't like having to boot up my device each time to use it).

I'm not sure if this was a software problem on Boyue's side, but with many of their default Android settings on, the battery drain was massive. Luckily, with some tweaks, it's greatly increased.

I've also been speaking with some devs at Boyue on how to better improve the battery life via slowing down the CPU, so hopefully it will be further improved in a later update. Their customer service has been very helpful so I'm hopeful
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Old 11-09-2018, 04:12 PM   #6
feelmaroon
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I had a similar problem. The first few days i'd wake up and it'd be dead and i thought "man, what a piece of junk"...I turned off wifi/blueooth/light...same prob...Then I went into the drop down and ejected the microsd card and since then the battery is great. I went to bed and it went down 1percent one night and none the other so i'm pretty convinced it had to do with the microsd card. I make a habit to get go back to the homescreen and not in the moonreader or kiwix app and that may help too. regardless, the battery is killer now while doing two things only: reading using the native reader and connecting a bluetooth keyboard and using it for writing using a text editor. perfect device for these two features (after having added about twenty fonts for the native reader)

Last edited by feelmaroon; 11-09-2018 at 04:15 PM.
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Old 11-09-2018, 04:15 PM   #7
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anyone know how to screenshot on this sucker? no volume rocker for the usual android way.
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Old 11-10-2018, 07:43 AM   #8
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Use some screenshot android app. There are a lot of them.
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Old 11-12-2018, 11:06 AM   #9
feelmaroon
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Use some screenshot android app. There are a lot of them.
Thanks for the screenshot app tip. I tried a few and none of them work that well> was hoping for a native way to screenshot.
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Old 11-12-2018, 03:14 PM   #10
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I just charged yesterday, havent used the device today at all (device is set to always standby, never power down) - and battery usage tells me 20 days of charge left. Questions?

Make sure this is enabled in advanced Wifi Settings (Android Settings).



Make sure bluetooth is disabled. Use this for quick access: https://apkpure.com/bluetooth-settin...edia.bluetooth

As the Likebook kills all your apps running in the background anyhow - it isnt your apps.

Only other possibility - the Likebook is indexing all your ebooks without you noticing, in which case remove them and put them back on in groups of less than several thousands.

You can also use the

adb top -m 10

command to see what processes are are active (developer options/usb debugging/enabled, pc with adb installed connected via usb) - in my case thats a hot 0% active for all processes while the device is idle:

Code:
User 0%, System 2%, IOW 0%, IRQ 0%
User 7 + Nice 1 + Sys 59 + Idle 2396 + IOW 0 + IRQ 0 + SIRQ 0 = 2463

  PID PR CPU% S  #THR     VSS     RSS PCY UID      Name
   97  5   0% S     1      0K      0K  fg root     taskup
   96  4   0% S     1      0K      0K  fg root     epd_task
   99  7   0% S     1      0K      0K  fg root     taskup_three
   98  6   0% S     1      0K      0K  fg root     taskup_two
29672  6   0% R     1   3612K   1076K  fg shell    top
  543  2   0% S    90 2101352K 118772K  fg system   system_server
  100  0   0% S     1      0K      0K  fg root     epd thread
  638  1   0% S    35 1488036K  88696K  fg u0_a15   com.android.systemui
  205  2   0% S    19 143764K  21184K  fg system   /system/bin/surfaceflinger
27640  0   0% S     1      0K      0K  fg root     kworker/0:0



User 0%, System 0%, IOW 0%, IRQ 0%
User 9 + Nice 0 + Sys 11 + Idle 2444 + IOW 1 + IRQ 0 + SIRQ 0 = 2465

  PID PR CPU% S  #THR     VSS     RSS PCY UID      Name
29672  6   0% R     1   3612K   1076K  fg shell    top
  543  2   0% S    90 2101352K 118772K  fg system   system_server
  205  2   0% S    19 143764K  21184K  fg system   /system/bin/surfaceflinger
    5  0   0% S     1      0K      0K  fg root     kworker/0:0H
  186  3   0% S     1      0K      0K  fg root     dhd_dpc
 1156  1   0% S     5   4908K    332K  fg shell    /sbin/adbd
  243  1   0% S    10  16128K   2164K  fg root     /system/bin/netd
 1455  1   0% S    11 1442824K  45560K  fg u0_a38   info.kfsoft.force.rotation
   12  1   0% S     1      0K      0K  fg root     watchdog/1
   13  1   0% S     1      0K      0K  fg root     migration/1



User 0%, System 0%, IOW 0%, IRQ 0%
User 6 + Nice 0 + Sys 13 + Idle 2445 + IOW 0 + IRQ 0 + SIRQ 0 = 2464

  PID PR CPU% S  #THR     VSS     RSS PCY UID      Name
29672  6   0% R     1   3612K   1076K  fg shell    top
  543  1   0% S    90 2101352K 118772K  fg system   system_server
  638  1   0% S    35 1488036K  88696K  fg u0_a15   com.android.systemui
    5  0   0% S     1      0K      0K  fg root     kworker/0:0H
27640  0   0% S     1      0K      0K  fg root     kworker/0:0
  205  2   0% S    19 143764K  21184K  fg system   /system/bin/surfaceflinger
28476  1   0% S    21 925684K  45212K  bg u0_a12   com.android.vending:instant_app_installer
  950  0   0% S     1   8652K   3268K  fg wifi     /system/bin/wpa_supplicant
   12  1   0% S     1      0K      0K  fg root     watchdog/1
   13  1   0% S     1      0K      0K  fg root     migration/1
Telling people that their android devices use battery when they are active, is only so much fun. Becaue they then all are like "but why" and "how can I make them not use battery", and why should I uninstall facebook.

One more thing - your last active app still could be preventing your likebook to go into hybernating states as well. If you cant make out the culprit, start deinstalling all your apps, and see if it helped.

Sadly this doesnt always show up on the battery usage screen (as you've noticed quite a few processes are grouped as "android") - in that case, use GSAM (https://play.google.com/store/apps/d...m.gsamlabs.bbm) (app has to be "always running in the background") to check wakelocks after a few hours.

Wakelocks are apps preventing the system from hybernating, and are usually caused by apps becoming active ("is there a new message from someone for me?!"), and android then preventing the device from going into hyberntion for a short while ("app probably still is communicating, I better not sleep"). If you have one app that spams the system with "active" states ("really no new massage for me?") battery drain can be caused by that as well.

On the likebook this is less likely since they are killing all apps in the background anyhow (usually - except for those you define in power options as "allowed"), but the last active app isnt killed and could still trigger it.

So I have to troubleshoot this? Yes - be my guest.

Start by disabling Bluetooth and Setting Wifi to the setting above. If that doesnt immensely increase your standby time, try to use GSAM to find out whats the culprit (you have to allow this app to run in the backgrount in the likebooks power management), if that doesnt help start by removing books from the device (the likebook is probably indexing them) and only adding them in small groups.

Try to not be the guy that tells the internet "i've have installed 5 apps you never heard of, and now my battery life is bad - what should I do". Try to prevent it at all cost. Something about the law of probability and you finding another human being that has the same five apps installed on the same device as you have. Still, people try to get their problems fixed this way by the thousands.

I'm on the latest firmware, btw.

Last edited by notimp; 11-12-2018 at 03:54 PM.
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