Help! My screen randomly lights up partial on its own, when I mean partially I mean the screen is off but the backlight is on and stays on until I press the power button. This happened before and I was told that LiteFlow was probably the cause of it, causing wakelocks, so I uninstalled it and I've not noticed it since. Then suddenly the last few days I've noticed it happen again, I've got betterbatterystats installed and I've been keeping an eye on the wakelocks, nothing stands out!
Is anyone else having this same issue?
Sent from my C6603 using Tapatalk 2
maverick1103 said:
Help! My screen randomly lights up partial on its own, when I mean partially I mean the screen is off but the backlight is on and stays on until I press the power button. This happened before and I was told that LiteFlow was probably the cause of it, causing wakelocks, so I uninstalled it and I've not noticed it since. Then suddenly the last few days I've noticed it happen again, I've got betterbatterystats installed and I've been keeping an eye on the wakelocks, nothing stands out!
Is anyone else having this same issue?
Sent from my C6603 using Tapatalk 2
Click to expand...
Click to collapse
Same here. It's a know bug
Enviado desde mi C6603 usando Tapatalk 2
Known bug? Another one?
vibecatalin said:
Known bug? Another one?
Click to expand...
Click to collapse
Yup I noticed this too.. happened to me 2 or 3 times before.. but haven't notice it recently..
Remove betterbattery and try.
Sent from my C6602 using xda premium
rttnpig] said:
Same here. It's a know bug
Enviado desde mi C6603 usando Tapatalk 2
Click to expand...
Click to collapse
Ok thanks, hopefully Sony will fix this.
_noone_ said:
Yup I noticed this too.. happened to me 2 or 3 times before.. but haven't notice it recently..
Click to expand...
Click to collapse
gm007 said:
Remove betterbattery and try.
Sent from my C6602 using xda premium
Click to expand...
Click to collapse
And try what? Just remove betterbattery?
Sent from my C6603 using Tapatalk 2
I've not got any of those sort of apps running and it's been happening to me as well.
C1emen7s said:
I've not got any of those sort of apps running and it's been happening to me as well.
Click to expand...
Click to collapse
Hmm let's hope Sony fix this is the 4.2 update.
maverick1103 said:
Help! My screen randomly lights up partial on its own, when I mean partially I mean the screen is off but the backlight is on and stays on until I press the power button. This happened before and I was told that LiteFlow was probably the cause of it, causing wakelocks, so I uninstalled it and I've not noticed it since. Then suddenly the last few days I've noticed it happen again, I've got betterbatterystats installed and I've been keeping an eye on the wakelocks, nothing stands out!
Is anyone else having this same issue?
Sent from my C6603 using Tapatalk 2
Click to expand...
Click to collapse
This happens due to low battery mode. If it is enabled, once the battery reaches the % mentioned for it to deactivate, the brightness kicks in and keeps the phone on and not on standby.
Example : your battery is at 3% and the low battery mode is set at 5%. As soon as the battery charge hits the 5%. We face the issue.
Sent From XPERIA Z ::: Stock, Locked & Rooted ( SLR )
TechGuru_x10 said:
This happens due to low battery mode. If it is enabled, once the battery reaches the % mentioned for it to deactivate, the brightness kicks in and keeps the phone on and not on standby.
Example : your battery is at 3% and the low battery mode is set at 5%. As soon as the battery charge hits the 5%. We face the issue.
Sent From XPERIA Z ::: Stock, Locked & Rooted ( SLR )
Click to expand...
Click to collapse
Hmm I'm sure it has happened above the low battery threshold I have set, maybe not I will monitor it tomorrow and see.
Sent from my C6603 using Tapatalk 2
Hmm will invistigate to this...
I have the xperia z for 2 week and never happend to me that problem
sent from my Xperia Z
TechGuru_x10 said:
This happens due to low battery mode. If it is enabled, once the battery reaches the % mentioned for it to deactivate, the brightness kicks in and keeps the phone on and not on standby.
Example : your battery is at 3% and the low battery mode is set at 5%. As soon as the battery charge hits the 5%. We face the issue.
Sent From XPERIA Z ::: Stock, Locked & Rooted ( SLR )
Click to expand...
Click to collapse
You are right, I've watched it over last few weeks and it only happens when low battery mode is enabled. Let's hope Sony address this and fix it!
Sent from my C6603 using Tapatalk 2
Related
Whilst I have been having the screen on, it shouldn't be burning this fast and it certainly didn't use to. 23 minutes on battery and 20% burned?
Did you install a new rom or new kernel? You can install an app like BetterBatteryStats to check out what might be causing this battery drain.
Vrayhem said:
Did you install a new rom or new kernel? You can install an app like BetterBatteryStats to check out what might be causing this battery drain.
Click to expand...
Click to collapse
Stock ROM 4.0.4 and have never rooted or flashed anything on before. It is completely stock and unaltered in every way. All I've done is install apps. It just seems to have been a little bad recently. I have BetterBatteryStats on, but the it isn't wakelocks. As I said, I've got the screen on consistently so the phone will always be awake. It is just that 20% in that amount of time seems really high, even for constant use, and I swear it didn't use to be that bad. I've installed Juice Defender because it tends to be good in how it managers network and WiFi. So far, things seem to be stabilising. But, I still want to know what can cause such sharp drainage...
Do you have a lot of apps running in the background? This is most likely the cause. Brightness is a big issue also. Flash a kernal!
Sent from my Sony Tablet S using xda app-developers app
ross231 said:
Brightness is a big issue also. Flash a kernal!
Click to expand...
Click to collapse
Check that you have Auto-brightness enabled. Also, I found that certain apps can drain battery big time. I agree with checking via a battery stats program. Maybe an APP is running in the background causing the cpu to stay at max speed?
A-mak said:
Check that you have Auto-brightness enabled. Also, I found that certain apps can drain battery big time. I agree with checking via a battery stats program. Maybe an APP is running in the background causing the cpu to stay at max speed?
Click to expand...
Click to collapse
Totally agree. Before I root my Note to delete some unuse apps from stock 4.0.4, the battery drains very fast. The most reason is some apps running in the background.
Did you change your sim recently? Sometimes the culprit is sim card.
Sent from my GT-N7000 using xda premium
Not fixes, but suggestions:
- An app like Green Power will stop data usage when screen off
- As others said, look into your display. My favourite app is Display Brightness as it adds an invisible slider on your screen
- For some reason, Chrome in the last week began to EAT my phone. I uninstalled it and I'm back to a blessed 1% an hour drain
check this
http://forum.xda-developers.com/showthread.php?t=1878828
Sent from my GT-N7000 using Tapatalk 2
Hey bazz, good to see you here.
Sent from my GT-N7000 using xda premium
jonpaslim said:
Hey bazz, good to see you here.
Sent from my GT-N7000 using xda premium
Click to expand...
Click to collapse
Hey bro, that sim card is a good one, am adding that to my knowledge base
Sent from my GT-N7000 using Tapatalk 2
baz77 said:
check this
http://forum.xda-developers.com/showthread.php?t=1878828
Sent from my GT-N7000 using Tapatalk 2
Click to expand...
Click to collapse
Thanks for your link, really helpful for me:good:
You may have to check your battery. Will it be hot when you are using it? Look at your battery, does it look "fat"? It happened once to me before, after changing a new battery. It's fine now. It was caused by overcharging it during the night.
I experienced it on my previous phone, now im going to prove it again in my note because i changed my sim recently and now i cannot achieved the 5 hrs i had before that my original sim card, best phone can do now is 3.5 hrs. I try to contact my provider if they can restore my previous sim card and see what will happen, its just a suspect.
Sent from my GT-N7000 using xda premium
knightrazor said:
You may have to check your battery. Will it be hot when you are using it? Look at your battery, does it look "fat"? It happened once to me before, after changing a new battery. It's fine now. It was caused by overcharging it during the night.
Click to expand...
Click to collapse
how can it be over charging. Doesnt it has built in function that cut-off power when charging complete. all modern chargers have that..
really would like to know cause i always charge the phone before going to sleep..
mistajoe83 said:
how can it be over charging. Doesnt it has built in function that cut-off power when charging complete. all modern chargers have that..
really would like to know cause i always charge the phone before going to sleep..
Click to expand...
Click to collapse
u r right..all modern chargers hv that..so, it will cut off the power when charging is complete..even I do put my Note for charging & go to sleep
So, dont worry..put your charger for charging & u can confidently go to sleep :good:
If you have network location checked and or GPS in /setting/location and security.
that's your suck battery problem.
Network location awake the phone constantly in accord with weather widget and lot apps in background that use this feature.
Cia
Hey guys,
I got my xperia t yesterday and i immediatly updated it to jelly bean. Ive done 3 full charges already and mediaserver keeps draining my battery. I put in an empty sd card and ive only got a few photos. Does this go away after a few days or should i do something about it?
spromper said:
I think I solved it. I read in the nexus4 forum that disabling keyboard sounds and/or system sounds could help. Maybe it's to soon to tell but I think it worked.
Sent from my LT30p using xda app-developers app
Click to expand...
Click to collapse
Sent from my LT30p using xda app-developers app
Let it settle for a few days. It will get better. This is normal behaviour
Odp: Mediaserver battery drain
In my case Mediaserver stands ONLY for any app that plays music when the screen is off. So for me it's PowerAMP.
Re: Mediaserver battery drain
gregbradley said:
Let it settle for a few days. It will get better. This is normal behaviour
Click to expand...
Click to collapse
Okay i hope you're right. Battery is still pretty good though even with the mediaserver draining it. I find it a great phone already!
Sent from my LT30p using xda app-developers app
Re: Mediaserver battery drain
Mm it's been three days now and somewhere.around 7 charges and mediaserver is still draining my battery. Is this still normal? Should i leave the device on as long as possible to let it settle? Or should.i reboot every day?
Sent from my LT30p using xda app-developers app
spromper said:
Mm it's been three days now and somewhere.around 7 charges and mediaserver is still draining my battery. Is this still normal? Should i leave the device on as long as possible to let it settle? Or should.i reboot every day?
Sent from my LT30p using xda app-developers app
Click to expand...
Click to collapse
rebooting everyday is a little extreme i reboot about once a week it takes a couple of hours for the system to settle again but i have to charge almost twice a day once fully and once a quick top me up 20 - 30 minutes max and that gets me through the day listening to music allday through a bluetooth headset phone calls texts internet and gaming
spromper said:
Mm it's been three days now and somewhere.around 7 charges and mediaserver is still draining my battery. Is this still normal? Should i leave the device on as long as possible to let it settle? Or should.i reboot every day?
Sent from my LT30p using xda app-developers app
Click to expand...
Click to collapse
This is really strange. It shouldn't be that way.
Well if you want, you could try repairing the software using PCCompanion or Sony Update Service. And then check if the problem still exist.
Re: Mediaserver battery drain
It's slowly getting better im just going to wait a couple more days. Screen is highest consumer now instead of mediaserver but its still high.
Sent from my LT30p using xda app-developers app
Re: Mediaserver battery drain
I was having the same problem. I found that when I removed the music widget from the home the drain stopped. It worked for me hope it works for you
Re: Mediaserver battery drain
Whatsinthebox said:
I was having the same problem. I found that when I removed the music widget from the home the drain stopped. It worked for me hope it works for you
Click to expand...
Click to collapse
Thanks, i tried it but it doesnt work. the drain actually got worse this morning. It's using 50% now. I think im going to try and flash ics tomorrow. What's the latest ics firmware for the T?
Sent from my LT30p using xda app-developers app
Re: Mediaserver battery drain
spromper said:
Thanks, i tried it but it doesnt work. the drain actually got worse this morning. It's using 50% now. I think im going to try and flash ics tomorrow. What's the latest ics firmware for the T?
Sent from my LT30p using xda app-developers app
Click to expand...
Click to collapse
If youre on root, download rescan media root. Disable automatic scanning.
Then download rescan media to rescan manually.
Both are available on play store
Sent from my LT29i using Tapatalk 2
Re: Mediaserver battery drain
I think I solved it. I read in the nexus4 forum that disabling keyboard sounds and/or system sounds could help. Maybe it's to soon to tell but I think it worked.
Sent from my LT30p using xda app-developers app
spromper said:
I think I solved it. I read in the nexus4 forum that disabling keyboard sounds and/or system sounds could help. Maybe it's to soon to tell but I think it worked.
Sent from my LT30p using xda app-developers app
Click to expand...
Click to collapse
That is one weird solution...
Re: Mediaserver battery drain
Arcano said:
That is one weird solution...
Click to expand...
Click to collapse
That's what i thought, but it really worked so i don't care.
Sent from my LT30p using xda app-developers app
Re: Mediaserver battery drain
I can't believe this, disabling system sounds actually working for me.
I've never seen media server at 2 percent.
Sent from my LT29i.
Kirandev said:
I can't believe this, disabling system sounds actually working for me.
I've never seen media server at 2 percent.
Sent from my LT29i.
Click to expand...
Click to collapse
Wow thats one stupid way to solve it. I had all system sounds enabled. Now lets see how it goes after disabling..
?!
is it realy working ?
so should i even disable Dial pad touch tones and screen lock sound,touch sounds ?
what about vibration?
Tinup93 said:
is it realy working ?
so should i even disable Dial pad touch tones and screen lock sound,touch sounds ?
what about vibration?
Click to expand...
Click to collapse
Yes, Disable everything under system sounds including vibrate on touch, hope it works for you too
Re: Mediaserver battery drain
Thanks for this mate, has made a big difference with media server.
Sent from my LT30p using xda premium
media server
my media server just went down straight to 7% after 100% usage on bar with android system 7% too is that still good ?
Hi all
I'm new to android and am having some major issues with my Sony New xperia z.
First off stamina mode is simply not working. It did to start but it's now not changing the expected battery life when toggled on and off. That's just the start though.
Battery life had been absolutely terrible. I have been deliberately stopping myself from using the handset just so I can make it through the day.
I have come from an iPhone 4 and am quite a heavy user normally, my battery always lasted well beyond one day. New I know the screen and processor on this are awesome but I'm literally not going to be able to use any apps or anything if this is the true battery life.:crying:
I noticed that android os was taking the majority of my battery for just if today, screen has since taken over since I got in because I've been searching the net for potential answers.
Android services is up there as well. I installed a battery checker to see if my phone is but going into deep sleep for some reason and found that there had been something like 3000 wakelocks since last charge (unplugged this morning). I'm now down to 3% after about 13.5 hours since unplugged.
Screenshot was from before I started writing this post.
Any help please. If this isn't some sort of bug/fixable errorI might have to see about returning this phone!
Is this amount of wake locks normal? How can I tell what's stopping my phone from sleeping? I'm new to android other than my nexus 7 which had always been amazing in terms of battery.
Thanks all
John
Try a factory reset or wait for a firmware update.
Sent from my C6603 using xda premium
any other tips?
gm007 said:
Try a factory reset or wait for a firmware update.
Sent from my C6603 using xda premium
Click to expand...
Click to collapse
Thanks.
Factory reset once and fixed the stamina mode issue temporarily but nothing else and stamina issue came back within a few hours. Uh oh battery now 1%
Not wanting to have to reinstall all apps again forma second time. Any other tips? Any way to check what's keeping it from sleeping?
Are you using gsam battery app??
It has all the battery info needed.
Try not to use stamina mode.
Sent from my C6603 using xda premium
gm007 said:
Are you using gsam battery app??
It has all the battery info needed.
Try not to use stamina mode.
Sent from my C6603 using xda premium
Click to expand...
Click to collapse
I have downloaded gsam - its how I knew there were over 3000 wakelocks but to be honest I've found it all a bit baffling. I'm pretty sure something's happening in the background when it shouldn't be but its like trying to find a needle in a haystack - I'm not sure what processes are what, and what parts of the system should be doing certain things anyway... Does that make sense?
Its dead now, so using my nexus 7 instead. I'll charge tonight, use as normal and monitor it tomorrow. Is there anything I could post from gsam up here that you genius's could help me out with? I bow to your mightier wisdom and plead for help!!! I love my new handset but this is leaving a real sour taste and my excitement and joy of leaving iOS behind me is waning!
Should I use it without stamina mode tomorrow and see if that improved things? Or should I use it as I did today?!
Thanks again everyone for your help.
Maybe you can upload app usage screen and kernel wakelocks.
Reboot ur phone 2 3 times ant Try it tomorrow without stamina mode
Sent from my C6603 using xda premium
my XZ died at 20% (jump straight to 0% and auto switched off ), so I think the phone mis-measured the real battery level.
since there is no wipe battery stats option in cwm anymore, how do I fix this issue?
thanks
moonset said:
my XZ died at 20% (jump straight to 0% and auto switched off ), so I think the phone mis-measured the real battery level.
since there is no wipe battery stats option in cwm anymore, how do I fix this issue?
thanks
Click to expand...
Click to collapse
We're all facing this problem, the only solution I see is to completely drain the phone and then completely charge it before turning the phone back on.
Sent from my C6603 using xda app-developers app
Dsteppa said:
We're all facing this problem, the only solution I see is to completely drain the phone and then completely charge it before turning the phone back on.
Sent from my C6603 using xda app-developers app
Click to expand...
Click to collapse
oh is this a general problem with the new. 423 firmware?
thanks
Just to correct a misconception on battery stats. The option to wipe the batterystats.bin file was removed from newer versions of CWM (and TWRP) because it does precisely nothing that is useful.
That file is deleted and recreated every time your phone is fully charged and has no effect on the percentage of battery shown to you.
See Dianne Hackborn's post on this here - https://plus.google.com/app/basic/stream/z13dgb0rksywh3muq222fzkqnwfgdbgrk04
Dianne is an engineer working for Google, so knows what she's talking about
Sent from my C6603 using Tapatalk 2
I have the same problem. It happened multiple times and is really annoying. I am using 4.2.2
Verstuurd van mijn C6603 met Tapatalk
Dsteppa said:
We're all facing this problem, the only solution I see is to completely drain the phone and then completely charge it before turning the phone back on.
Sent from my C6603 using xda app-developers app
Click to expand...
Click to collapse
tried it, and i think this method is working!
my phone battery dropped to 13% and was still on, warning message also pop up at 15% as usual.
P.S. i charged it again at 13% coz i needed to use it, will test it later
THIS BUG CAN DO HARM TO YOUR BATTERY! BECAUSE YOU WILL NEVER KNOW WHEN THE BATTERY DRAINS!
As we all may encounter the battery bug after upgrading to .423 fw. When one restarts his phone, he has chances that the battery level of the phone rises (e.g., I turned off mine just now at 26% and turned it on showing 51%). This has been confirmed by many users in the forum, so I believe it is a firmware level bug of 4.2.2.
Is there any one willing to pay some time on fixing it? Coz this is a quite crucial bug for us, we dont know when will our phones automatically turn off! Thanks in advance
I believe its not a caliboration thing coz we also upgrade or wipe our devices before, and no such thing happened. I think its a firmware or kernel level bug. Does anyone who flashes a custom kernel also encounter the same problem?
It seems that Spanish FW is free from this bug.
http://forum.xda-developers.com/showthread.php?p=43261281
plz report your rom or base FW in the reply. Thanks.
[NEW EDIT]
It seems that I fix the bug. The battery jumps when the phone restarts, so I think there is something during boot which causes the issue. I delete the XZDualRecovery, and test the phone several times, and its fine!
Deleting XZDualRecovery might be a temporary fix, so you can choose what to do
[NEW EDIT 2]
someone reports that they dont encounter the bug and believes that its the calibration thing. i declare again that i DID the calibration and the issue was still there. for me, at least, deleting XZDualRecovery fixes the bug. plz report more details in the reply, like fw, root or not, recoveries. Thank you
I don't think there is a bug here.
Never happened to me,cause i did full wipe while flashing.
Maybe it happens only for users that didn't wiped everything.
Sent from my C6603 using xda premium
gm007 said:
I don't think there is a bug here.
Never happened to me,cause i did full wipe while flashing.
Maybe it happens only for users that didn't wiped everything.
Sent from my C6603 using xda premium
Click to expand...
Click to collapse
Actually I did
kkd28 said:
As we all may encounter the battery bug after upgrading to .423 fw. When one restarts his phone, he has chances that the battery level of the phone rises (e.g., I turned off mine just now at 26% and turned it on showing 51%). This has been confirmed by many users in the forum, so I believe it is a firmware level bug of 4.2.2.
Is there any one willing to pay some time on fixing it? Coz this is a quite crucial bug for us, we dont know when will our phones automatically turn off! Thanks in advance
Click to expand...
Click to collapse
and here I thought it only happen to me, I even tried installing battery calibration app lol
so yeah, +1 in this though I think this is happen in kernel level? which means us with lock bootloader can't use the fix... CMIIW though
primularosea said:
and here I thought it only happen to me, I even tried installing battery calibration app lol
so yeah, +1 in this though I think this is happen in kernel level? which means us with lock bootloader can't use the fix... CMIIW though
Click to expand...
Click to collapse
There is no kernel for 4.2.2. DoomKernel supports fw before 423. Correct me if Im wrong. Also in LB and know not much about custom kernels.
yes this issue exist. it happened to me when i updated to this new 4.2.2 also i have black dots in camera and the back cover of my xperia z is not correctly glued. i hate sony right now
amintox said:
yes this issue exist. it happened to me when i updated to this new 4.2.2 also i have black dots in camera and the back cover of my xperia z is not correctly glued. i hate sony right now
Click to expand...
Click to collapse
yes its kinda anoying. but i believe its software level problem except the unglued issue
Sent from my Nexus 7 using xda app-developers app
Oh, this actually happened to me once.
It also happened to me yesterday. I usually never turn off my phone, but yesterday I did it and found the battery went from 26% to 51% magically.
Sent from my C6603 using Tapatalk 4
I have the exact same problem, went from 26% to 52% after reboot... Is this bug bad for our battery? If so, maybe I'm flashing back to 4.1.2.
Sent from my C6603 using XDA Premium HD app
dilanopro said:
I have the exact same problem, went from 26% to 52% after reboot... Is this bug bad for our battery? If so, maybe I'm flashing back to 4.1.2.
Sent from my C6603 using XDA Premium HD app
Click to expand...
Click to collapse
Had the same!!! At the same valueas!!!!
Sent from my C6603 using xda app-developers app
---------- Post added at 03:33 PM ---------- Previous post was at 03:32 PM ----------
demon2112 said:
Had the same!!! At the same valueas!!!!
Sent from my C6603 using xda app-developers app
Click to expand...
Click to collapse
Maybe wr need to recalibrate battery,charging now
Sent from my C6603 using xda app-developers app
Pls let me know if that calibration worked for you...
Sent from my C6603 using XDA Premium HD app
Does anyone tried the hard shutdown?
Vol up+power
Sent from my C6603 using xda premium
hello all me too experienced the same problem but I successfully regained my battery life. Here is what I have done....
1)First I drained the battery fully until mobile gets switched off
2)Then I left the mobile to cool off for half an hour
3)After that I charged the battery upto 100%
4)Following this I switched on the Mobile and did the battery calibration by using 'Battery Calibration' app
5)Again I fully drained the battery and charged it again to 100%
Now the battery life seems good. I checked this by using WiFi whole night....battery lasted overs 12hrs
Battery Bug
Just updated my Xperia Z today with a full data wipe from 4.1 to 4.2.2 and I've experienced the same problem from 26% of battery to 52% after reboot.
viswavj said:
hello all me too experienced the same problem but I successfully regained my battery life. Here is what I have done....
1)First I drained the battery fully until mobile gets switched off
2)Then I left the mobile to cool off for half an hour
3)After that I charged the battery upto 100%
4)Following this I switched on the Mobile and did the battery calibration by using 'Battery Calibration' app
5)Again I fully drained the battery and charged it again to 100%
Now the battery life seems good. I checked this by using WiFi whole night....battery lasted overs 12hrs
Click to expand...
Click to collapse
Think I'm gonna try this to when I have the time. Phone just went off because the battery is dead, it was showing 14% and all of a sudden 0%.
dilanopro said:
Think I'm gonna try this to when I have the time. Phone just went off because the battery is dead, it was showing 14% and all of a sudden 0%.
Click to expand...
Click to collapse
This is exactly what I concern. I dont know when my phone is going to off, and it could be big trouble when there is no access to the charger.
Maybe we just need to recalibrate, drain battery to 0% and fully charge it to 100% while the phone is turned off.
plz give some feedback if it works
Sent from my C6603 using xda premium
viswavj said:
hello all me too experienced the same problem but I successfully regained my battery life. Here is what I have done....
1)First I drained the battery fully until mobile gets switched off
2)Then I left the mobile to cool off for half an hour
3)After that I charged the battery upto 100%
4)Following this I switched on the Mobile and did the battery calibration by using 'Battery Calibration' app
5)Again I fully drained the battery and charged it again to 100%
Now the battery life seems good. I checked this by using WiFi whole night....battery lasted overs 12hrs
Click to expand...
Click to collapse
I experiencing the same issue. 2% to 55% after reboot. wow... 4.2.2 doesn't bring anything for me to consider to keep it. so back to 4.1.2 (.4.3.4)
But one thing for sure (never discharge a lithium ion / polymer battery from full to 0 they don't like it) you could do that with nickel cadmium/ metal hydride batteries ant they really thank for that if you keep doing that you just kill your battery before its due time.