Hi, I would like to share my experience on my L9 P760 (v10a unbranded form TIM Italy with root) about the following issues using the original LG charger:
1) I never power off my L9 and usually I recharged it in the night (not in airplane mode) while I am sleeping, so I plug the charger at 23:00 and I detach it at 7.00 with a charge variable from 94/95% to 100%.
2) The first hour after dectached from the charger, the phone drain battery very fast, tipically 7/8-10% in about 1 hour (also by doing absolutely nothing on phone), next it gets a quite normal battery consumption.
Assuming these 2 conditions, I always have used the phone in the same way and basically with the same set of apps used and installed. I leave all sensors always on, the 3g, the wifi, the bluetooth connection always on with a full synchronization for two google accounts. The main activities I usually perform on the phone are check the mail with GMail, read a lot of news with Currents, a moderate usage of Facebook and Twitter and watching some video on YouTube. In these typical scenario usage, the maximum performance I obtained from battery was about 28 hours with about 3 hours of active screen usage. Quite good but...
Accidentally, I discovered that charging the phone with another charger (not LG, in my case an Asus charger for the tablet TF101G but I think it could work by using any charger with a different volatage output respect to original) give me an incredible improvement on battery life. Not only when now I detach the phone is ALWAYS at 100% but also the fast battery drain observed in the first hour is gone. Now with the same usage scenario described above yesterday I have obtained 44 hours of usage (with a residual charge of 14%) and more than 4 hours anf half of active screen usage. I am quite sure that this behaviour depends on the charger because I repeated the entire cicle of charge-use_the_phone-charge for three times and I always obtained these consistent results. Next I tried to charge again the phone with original LG charger and I have again the same set of issues reported above.
I attach the screenshot of battery usage this morning just to show you what I said.
Anyone has found a similar behaviour on his L9?
hm more should try and post feedback, i dont have a second charger and i also notice the same battery drainage with loosing fast the first 7-10% after charging and phone not full when i wake up in the morning.
Is there possible a battery damage by using an other charger? this seems like a charger thing, lg to low the costs of production in this model has cutted down the quality in every peripheral of the phone, charger cable headphones etc
spidr said:
Is there possible a battery damage by using an other charger?
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Click to collapse
For what I know (please someone correct me if I am wrong) it should not be a problem. I think you can use without problems any charger which have a maximum output greater than the required input power of the phone (the power in excess will not not be used).
tizfa said:
Hi, I would like to share my experience on my L9 P760 (v10a unbranded form TIM Italy with root) about the following issues using the original LG charger:
1) I never power off my L9 and usually I recharged it in the night (not in airplane mode) while I am sleeping, so I plug the charger at 23:00 and I detach it at 7.00 with a charge variable from 94/95% to 100%.
2) The first hour after dectached from the charger, the phone drain battery very fast, tipically 7/8-10% in about 1 hour (also by doing absolutely nothing on phone), next it gets a quite normal battery consumption.
Assuming these 2 conditions, I always have used the phone in the same way and basically with the same set of apps used and installed. I leave all sensors always on, the 3g, the wifi, the bluetooth connection always on with a full synchronization for two google accounts. The main activities I usually perform on the phone are check the mail with GMail, read a lot of news with Currents, a moderate usage of Facebook and Twitter and watching some video on YouTube. In these typical scenario usage, the maximum performance I obtained from battery was about 28 hours with about 3 hours of active screen usage. Quite good but...
Accidentally, I discovered that charging the phone with another charger (not LG, in my case an Asus charger for the tablet TF101G but I think it could work by using any charger with a different volatage output respect to original) give me an incredible improvement on battery life. Not only when now I detach the phone is ALWAYS at 100% but also the fast battery drain observed in the first hour is gone. Now with the same usage scenario described above yesterday I have obtained 44 hours of usage (with a residual charge of 14%) and more than 4 hours anf half of active screen usage. I am quite sure that this behaviour depends on the charger because I repeated the entire cicle of charge-use_the_phone-charge for three times and I always obtained these consistent results. Next I tried to charge again the phone with original LG charger and I have again the same set of issues reported above.
I attach the screenshot of battery usage this morning just to show you what I said.
Anyone has found a similar behaviour on his L9?
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Click to collapse
lolz, :laugh: replace your original LG Charger, must be faulty. You just said its unbranded TIM Italy.
I get similar good result with original charger. My battery lasts more than 35 hours with business use and more than 40 hours after moderate use. Or may be P765 in India got good quality chargers than other countries.
REASON FOR SLOW CHARGING: LG EXPLAINS IN WHICH CONDITIONS L9 CHARGES TOO SLOW HERE ON THIS PAGE . In your case your Networks (3G, BT, etc) are always on, that means CPU is always working at some extent and L9's built-in feature slows your charging to avoid OVERHEAT problem explained on this page. LG have restricted heavy CPU usage and Charging at the same time to avoid device malfunction.
EDIT: Any technical person will tell you overnight charging is bad for battery and phone as it creates too much heat and that damages battery. And yes, My phone gets 100% in around 1-3 hours. And when you say you need to charge overnight and its still 94% sometimes, then dude you have slow charging problem with your charger.
cmahendra, first of all, I want to thank you for the precious tips and solutions you give us in the forum. :good:
Let me clarify some points:
My phone was originally a branded TIM next I unbranded it and transformed into a kind of european V10A (I said "kind of" because I flashed european firmware but the software version shows p76010a-222-01 differently from a real european phone. It seems that this code is computed by using also the IMEI.)
REASON FOR SLOW CHARGING: LG EXPLAINS IN WHICH CONDITIONS L9 CHARGES TOO SLOW HERE ON THIS PAGE . In your case your Networks (3G, BT, etc) are always on, that means CPU is always working at some extent and L9's built-in feature slows your charging to avoid OVERHEAT problem explained on this page. LG have restricted heavy CPU usage and Charging at the same time to avoid device malfunction.
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Click to collapse
This explanation given here can not apply to my situation. In the night the phone basically is always in deep sleep, so there should not been overheating problem, so the charger should work at its full power.
I even don't think that my charger is faulty because: 1) this problem (of not completely charge the phone after a night) is common to a lot of other L9 P760 users (as reported in other italian forums and applied even to branded or unbranded europoean firmware). 2) I can confirm you that if I charge the phone during the day it reaches the 100% of charge in about 2, 2-5 hours but when I unplug it it has always a very fast battery drain in the 1st hour. Some days ago, with original LG charger, I discovered that in the night, ithe battery has a continuos fluctuation from 100% to 95/94% as showed here:
so this is probably is the main reason why in the morning when you unplug the phone you obtain a variable charge of the battery.
I think it is a strange behaviour which is related to some bugs in LG firmware on P760, at least in v10a. I even don't know if this problem has been fixed in the last v10h (and possibly someone can confirm us). Anyway, for now, I will be remain to v10a just because I need root for some applications.
tizfa said:
For what I know (please someone correct me if I am wrong) it should not be a problem. I think you can use without problems any charger which have a maximum output greater than the required input power of the phone (the power in excess will not not be used).
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Click to collapse
Thanks for sharing!
Please can you give me the specifications of the charger you used?
Carter07 said:
Thanks for sharing!
Please can you give me the specifications of the charger you used?
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Click to collapse
Input:100-240V ~0.5A
Output:5Vdc/2A or 15Vdc/1.2A
about the chargers... you can use any charger that has 5.5 DCV output. The trick for the slow charging is the current, I charge my L3 with original lg charger with 0.7A (700mA) and it charges from 0 to 100 in 3 hours max, so try another charger that has more output current
Sent from my LG-E400 using Tapatalk 2
tizfa said:
Input:100-240V ~0.5A
Output:5Vdc/2A or 15Vdc/1.2A
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Click to collapse
I also posted a thread about this problem, so it's not just me. I have a v10a brand vodafone.
http://forum.xda-developers.com/showthread.php?t=2116956
I checked the default LG charger and it has these specs:
Input:100-240V ~0.2A
Output:5Vdc/0.85A
So the original LG charger has lower ampere in input and output (less than half), are we sure it's not going to damage phone?
Carter07 said:
I checked the default LG charger and it has these specs:
Input:100-240V ~0.2A
Output:5Vdc/0.85A
So the original LG charger has lower ampere in input and output (less than half), are we sure it's not going to damage phone?
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Click to collapse
I read on several other forums that should not be a problem. Example:
http://forums.androidcentral.com/ve...se-tablets-2a-usb-charger-charge-rezound.html
Anyway, next days I want to try with another less powerful charger. I have also noted that the phone while charging is not overheating, so it could be a good signal that all is ok.
Tonight, I also want to use "Battery Monitor Widget" to get useful statistics about temperature and power absorption while charging the phone.
I will let you know something soon.
I've got the same problem. I charge full my L9 and when I detach my mobile from the charger the battery starts to drain fast even if I don't use it or unblock the device. Then, when the battery reachs about 80% of battery, the consumption stabilizes quickly. In general the battery life is quite good but I expected more of a large duration battery.
The strange thing is that when the baterry is low, (more or less at 25%) it drains so much slower compared to when I unplug the charger. Any more suggestion? I've bought it 5 days ago and I've charged it 3 times.
Thanks for your help and sorry with my english, I'm spanish
It was once posted on xda portal that charging from a pc (usb port) although it's slow, it makes the battery last longer, because of low voltage, so using a charger that passes less voltage is always better, but the charging process is longer.
hamdimo said:
It was once posted on xda portal that charging from a pc (usb port) although it's slow, it makes the battery last longer, because of low voltage, so using a charger that passes less voltage is always better, but the charging process is longer.
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Click to collapse
Cool. The thing is I turn my PC off at night so I use the travel adapter included with the phone. I have noticed my battery always starts at 99% instead of 100% and seems to drain fast to 95%, but afterward the battery life is good.
I turn off my wireless most of the time because I saw wlan_rx_wake was causing an unholy amount of wakelocks due to some dynamic IP crap. I also turn on airplane mode at night because I want to sleep. I also ran the T-Mobile bloatware disabling script by LG here. I have no idea how much of a difference that made. However, I left location services and sync on because I noticed very little difference. I play about 15 minutes of games and use the screen for about another 105 minutes everyday. My battery drains about 40% in 30 hours. So I can get two or three days of charge before I have to recharge.
Here's my current power breakdown after 32 hours, according to GSam Battery Monitor:
Screen - 64.1% (Medium brightness, 50%)
App Usage - 25.0% (Android System - 5.5%, Kernel [Android OS] 4%, Game 1 - 2.5%, Kii Keyboard - 2.5%, Game 2 - 2.4%, Live Wallpaper 1.0%)
Phone Radio - 10.1%
So I have some news...
Relative to temperature while using the tablet charger, I can confirm that the temperature reached by the phone while charging is not high , like when you use the phone for normal activities (about 24-25 °C). See yourself the attached image.
I have also try to use another charger (in this case a Sony charger of the Xperia of my wife) which incidentally has the same specs of the original Lg charger: output:5Vdc/0.85A. I expected the same behaviour as with original charger (so with the same issues) but I obtained a correct charge at the end (100%) and no continuos fluctuation from 100% to 95/94% as reported with original charger (check the attached image).
So my conclusion is that there is something that does not work in the original charger. The strange thing is that a lot of us have these problems so I don't' know if this a build problem of the charger or a set of flawed transformers...
Can I use the charger of my Toshiba Tg01 for Lg l9?
Thanks in advance!
Marcoluca56 said:
Can I use the charger of my Toshiba Tg01 for Lg l9?
Thanks in advance!
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Click to collapse
I don't know the specs of the charger of Toshiba but you can use any charger which has an output of 5Vdc. The amperage of original L9 charger is 0.85A so if you use a charger with more amperage, you will charge your phone faster with higher temperature for battery, with less amperage the phone will charge slower but with a lower temperature for battery (in general the high temperature is a known enemy of the health of a battery). My tip is that you should use a charger with the specs similar to the original LG charger.
I tried using the USB charger on my laptop instead and I did notice my first 5% of battery drains much slower than before.
The L9 has a good standby life. By running the LG bloatware disable script and disabling specific apps myself, I was able to draw less than 1% on standby with 15 minutes of active screen usage and wireless turned off. With airplane mode turned on at night, the phone can last even longer.
However, the battery drains very fast with active screen use and wireless turned on.
Can you all please post what is your battery's voltage when it is at full charge BEFORE you unplug the charger??
(Most battery software can give you voltage reading. I use battery spy.
Thank you!!
nsfgp said:
Can you all please post what is your battery's voltage when it is at full charge BEFORE you unplug the charger??
(Most battery software can give you voltage reading. I use battery spy.
Thank you!!
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Click to collapse
Battery Monitor Widget says 4360 mV (by using an Xperia charger with same specs of original LG charger).
tizfa said:
Battery Monitor Widget says 4360 mV (by using an Xperia charger with same specs of original LG charger).
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Click to collapse
Thank you tizfa. This is the same terminal voltage I got in my P769. I can only take it that the reporting is accurate. More than 4.2V will damage li-po battery in no time.
Hello,
I have a problem with battery on my Samsung Galaxy S3. Let me tell You my story.
After buying my brand-new phone the battery life was quite ok, I could be using (games, music, internet) my phone for almost all day and I was charging it every night. After two years of using, I rooted my phone and installed CyanogenMod 11. Then the problem appeared - after some time the screen was flickering and device was turning off. I was really confused, so I changed my rom to another, then another, another etc. Then I saw my battery is swollen. I bought brand new, original battery and used CM12 for maybe one month. I changed cause of battery, about 3-4 hours. Now I'm using Android Revolution ROM which is modified stock ROM, but has improved RAM use etc. Now my battery life is much better, but it can not afford more than few hours without battery saving mode on, or 8-10 hours with battery saving on. Here You can see a screenshot from my phone (I would post this but spam setting don't allow me)...
Is it normal? I thought battery life on my phone was better. I haven't made any battery calibration. Should I try this out (cleaning battery stats)?
Thanks for Your answers.
There is no normal for battery life, a rough guide is 5hrs screen on time from one battery is good. Unless you run battery stats you won't know what the problem is.
It all depends on how you use your phone, I use mine completely differently.
When S3 was my primary phone and I used him extremely hard than battery needed to be charged every day. Now, when I'm using him occasionally battery remains operational even a 5 days.
It is not normal in daily use to charge every couple of hours especially if battery is brand new. Of course there can be power leak on IC chip due to overheating in past but usually apps and wakeloks respond for quicker than normal discharge.
Maybe there is an app in your play store shelf which drains battery juice. Try to flash any firmware you like but do not restore your apps. Try using your phone per one day and check how it goes.
Meanwhile you can install cpu spy to check deep sleep state. Also an app for wakeloks diagnostic, ie gsam or better battery stats.
____________________________________________
P3110 / I9300 / I9100 / NEXUS 5 / iPAD2
Okay, I downloaded Wakelock Detector & CPU Spy and going to take a look how my battery is being drained.
Hi guys , this is my first post here.
I have a Alcatel Onetouch Idol 2S (6050Y) and it has terrible battery. I have tried almost every solution for Cell Standby on this forum but it did not work so I am posting my own thread. Problem is Cell Standby which uses around 30 - 50% of my battery and Phone Idle which uses 20-30%. I have disabled Wi-Fi, GPS, Bluetooth, Sync, Data Connection, Location, Location History, Keep WiFi on during sleep mode is on only when plugged in, Scaning Always Available is disabled, there are no Device Administrators, Wakelock Detector does not show anything strange and almost everything that I don't need is disabled. I use 2G network only.
I disabled some bloatware using root to get more battery, from 11 PM to 8AM it drains around 4% in idle, which for me is pretty good, but everytime I turn on my WiFi and start going to Youtube or Google it starts heating up like crazy and I cannot hold it in my hand, and DU Battery Saver reports 40 degrees Celsius when Youtubing or on Chrome. The battery goes down really fast. GSMArena reports that my phone can be upgraded to Android 4.4 ( its 4.3 now ) but when I press System Updates nothing happens. I think I have a pretty good signal ( 89 dBm ) and every other android phone in my house does not have such problems other than mine.
GSMArena reports that my battery is supposed to have 2150mAh but DU Battery Saver reports a 1390 mAh battery capacity. What is going on in here ? App called Battery Monitor says that there are 2 states of battery capacity 2137 mAh and 1390 mAh. What do I do to repair my phone?
Bumping, please help guys
Bump again
So I have this annoying problem that my G5 turns itself off when the percent of charge left is somewhere between 15 and 20 percent. I'm not completely sure that it affects amount of time it could operate from the full charge but at least it leads to the following problems:
1) Battery saver is never triggered so losing the ability to use the phone is always abrupt.
2) Battery usage statistics/ time left on battery predictions seem to be totally incorrect.
I've googled and found some ways to calibrate battery without rooting the phone but it seems like they always feature charging the phone while it's turned off and somehow (maybe due to newer android) G5 always turns itself on when connected to charger for me. All the apps for battery calibration seems to do nothing.
So my question is - is there any way to fix this without going to LG tech support/ rooting the phone? May factory reset help in this case perhaps?
Same issue
Very good question and very giid analyse , i have the same problem , i was about to calibrate my batterys but seems to do nothing according to your experience . i m using lg external battery charger , i think using two devices for the battery ( lg charger + phone ) give this problem , i m very confiuesed how to solve this probleme
Picoh said:
Very good question and very giid analyse , i have the same problem , i was about to calibrate my batterys but seems to do nothing according to your experience . i m using lg external battery charger , i think using two devices for the battery ( lg charger + phone ) give this problem , i m very confiuesed how to solve this probleme
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Click to collapse
I second this I got 3 batteries and the cradle 1 never charges to 100% but seems to last longer than the 2 that do charge 100%
I think the cradle and charging throws the calibration way off then think you run 1 batt down till shutdown slap a new one in so the device never gets a charge discharge calibration