Hi,
I buy this battery some days ago and from yestarday i'm using it on my lg p880
Akku Polarcell is this
http://www.ebay.it/itm/PolarCell-Ak...0-BL-53QH-Accu-Batterie-Battery-/330837087057
These are the infos
Compatible with: LG Optimus 4X HD (P880), Optimus L9 (P760), Optimus LTE2.
Replace this battery-type: BL-53QH. Dimensions: approx 58 x 51 x 5 mm. Capacity: 2300 mAh.
*The strongest battery of these models
*Equipped with high quality cells
*checked PolarCell-quality batteries
*No cheap battery, but strictly controlled brand product after all EU norms
*Overcharge protection, heat protection and short circuit protection
*Loaded with original power supply
*High-end Li-ion technology: high capacity without memory effect
Now i'm testing it and report my results..
By now first impression are a bit better respect original lg p880 battery..
In next day i edit this thread adding new info and results..
Other users use this battery?
First Test : RESULTS
I used MIUI cm10 , Slimbean cm10.1 , PAC cm10.2 and with all roms results are very good
Original Battery (2150mAh)
Normal Using (Optimus Prime 2.70 kernel with freq cpu+gpu default,wifi always ON,about 1 hour of 3G,GPS on,agps ON)
Game Using (same as above but using some games)
Result = about 10-12hours of autonomy (with a full charge from 0% to 100%)
Akku Battery (2300mAh)
Normal Using (Optimus Prime 2.70 kernel with freq cpu+gpu default,wifi always ON,about 1 hour of 3G,GPS on,agps ON)
Game Using (same as above but using some games)
Result = about 12-15 hours of autonomy (with a full charge from 0% to 100%)
So by now i think that it works good and seem that works also good for charging..
Naturally i repeat tthese tests again but definitely Akku Polarcell is a good product and important it's similar as dimensions as original battery..
Last thing is about charging : Akku Polaercell heats up less..
If someone else have Akku Polarcell can test and report results..
Next step for me is to measure real mAh of Akku and Original Battery..Results (if possible) soon
Great initiative!
Any new results
Dear zicoxx would u share ur results with this new battery?
Are u satisfied ? How long does it take to recharge?
I used a Polar Cell battery on my previous phone (Galaxy S) and was very satisfied. I am now trying to get rid of some battery draining wakelocks on my 4x and then I consider buying one of these batteries.
I just bought the 2300mah PollarCell battery and I'll post feedback as soon as I have it. My current battery, the original one, is lasting little over 7h with WiFi and mobile data active. When checking battery usage I see Android SO keeping the phone "awake" for about 6h and not even 2h of screen time.
I'm running CM10.2 and the CPU governor set to interactive (also tried conservative but the results were about the same) and charging my phone twice a day
merlykx said:
I just bought the 2300mah PollarCell battery and I'll post feedback as soon as I have it. My current battery, the original one, is lasting little over 7h with WiFi and mobile data active. When checking battery usage I see Android SO keeping the phone "awake" for about 6h and not even 2h of screen time.
I'm running CM10.2 and the CPU governor set to interactive (also tried conservative but the results were about the same) and charging my phone twice a day
Click to expand...
Click to collapse
check whats keeping device awake with better battery stats, then you can act accordingly.
Flying_Bear said:
check whats keeping device awake with better battery stats, then you can act accordingly.
Click to expand...
Click to collapse
I installed the app and found that the wakelock is due to "baseband_xmm_power". I looked it up on google and found several reports of the same problem, seems to be related to Tegra 3 devices
Even with this wakelock I'm getting better battery life with the PollarCell:14h running and still 26% (1h 47m screen time and 6h20m of CPU awake)
merlykx said:
I installed the app and found that the wakelock is due to "baseband_xmm_power". I looked it up on google and found several reports of the same problem, seems to be related to Tegra 3 devices
Even with this wakelock I'm getting better battery life with the PollarCell:14h running and still 26% (1h 47m screen time and 6h20m of CPU awake)
Click to expand...
Click to collapse
my recommendation is to unlock bootloader, flash custom rom & kernel that has fixed baseband problem, you'll see much bigger standby and onscreen time!
I think the cm team fixed baseband_xmm_power bug in their latest releases.
But i'm also interested in this battery, is it any good?
Also does it reduce heat at all?
sent from my Optimus 4x
just hit the thanks button
baxtex said:
I think the cm team fixed baseband_xmm_power bug in their latest releases.
But i'm also interested in this battery, is it any good?
Click to expand...
Click to collapse
I'm on the latest nightly (cm10.2-20130918) and I still have that problem, last night I had the phone on airplane mode (used about 8% battery between 1:30am and 7:45am) and still got the wakelock although it was significantly less than usual...at 7:45 I connected the phone to the network (immediately wi-fi and 3g after I left home, now back to wi-fi) and it states 28% battery usage over 7h54m with 1h50m of the baseband_xmm_power and 1h33m with the CPU on the 51Mhz frequency.
merlykx said:
I'm on the latest nightly (cm10.2-20130918) and I still have that problem, last night I had the phone on airplane mode (used about 8% battery between 1:30am and 7:45am) and still got the wakelock although it was significantly less than usual...at 7:45 I connected the phone to the network (immediately wi-fi and 3g after I left home, now back to wi-fi) and it states 28% battery usage over 7h54m with 1h50m of the baseband_xmm_power and 1h33m with the CPU on the 51Mhz frequency.
Click to expand...
Click to collapse
Weird. Running Slimbean v8 which is quite old now, based on cm10.1 but I have great battery life.
Hey guys..i'm returned with results from 10days of use of Akku PolarCell 2300mAh..
I used MIUI cm10 , Slimbean cm10.1 , PAC cm10.2 and with all roms results are very good
Original Battery (2150mAh)
Normal Using (Optimus Prime 2.70 kernel with freq cpu+gpu default,wifi always ON,about 1 hour of 3G,GPS on,agps ON)
Game Using (same as above but using some games)
Result = about 10-12hours of autonomy (with a full charge from 0% to 100%)
Akku Battery (2300mAh)
Normal Using (Optimus Prime 2.70 kernel with freq cpu+gpu default,wifi always ON,about 1 hour of 3G,GPS on,agps ON)
Game Using (same as above but using some games)
Result = about 12-15 hours of autonomy (with a full charge from 0% to 100%)
So by now i think that it works good and seem that works also good for charging..
Naturally i repeat tthese tests again but definitely Akku Polarcell is a good product and important it's similar as dimensions as original battery..
Last thing is about charging : Akku Polaercell heats up less..
If someone else have Akku Polarcell can test and report results..
Next step for me is to measure real mAh of Akku and Original Battery..Results (if possible) soon
Bye
Could you install gsam battery monitor and monitor you battery temp while using your phone and comparing to the stock battery?
sent from my Optimus 4x
just hit the thanks button
zicoxx said:
Hey guys..i'm returned with results from 10days of use of Akku PolarCell 2300mAh..
I used MIUI cm10 , Slimbean cm10.1 , PAC cm10.2 and with all roms results are very good
Original Battery (2150mAh)
Normal Using (Optimus Prime 2.70 kernel with freq cpu+gpu default,wifi always ON,about 1 hour of 3G,GPS on,agps ON)
Game Using (same as above but using some games)
Result = about 10-12hours of autonomy (with a full charge from 0% to 100%)
Akku Battery (2300mAh)
Normal Using (Optimus Prime 2.70 kernel with freq cpu+gpu default,wifi always ON,about 1 hour of 3G,GPS on,agps ON)
Game Using (same as above but using some games)
Result = about 12-15 hours of autonomy (with a full charge from 0% to 100%)
So by now i think that it works good and seem that works also good for charging..
Naturally i repeat tthese tests again but definitely Akku Polarcell is a good product and important it's similar as dimensions as original battery..
Last thing is about charging : Akku Polaercell heats up less..
If someone else have Akku Polarcell can test and report results..
Next step for me is to measure real mAh of Akku and Original Battery..Results (if possible) soon
Bye
Click to expand...
Click to collapse
Great testing! Gonna buy this now, pretty cheap to
Hey,could you tell me how much screen on do you get on stock battery and how much on this battery ?
Does this battery give you from 30 minutes to 1 hour more screen on ?
merlykx said:
I'm on the latest nightly (cm10.2-20130918) and I still have that problem, last night I had the phone on airplane mode (used about 8% battery between 1:30am and 7:45am) and still got the wakelock although it was significantly less than usual...at 7:45 I connected the phone to the network (immediately wi-fi and 3g after I left home, now back to wi-fi) and it states 28% battery usage over 7h54m with 1h50m of the baseband_xmm_power and 1h33m with the CPU on the 51Mhz frequency.
Click to expand...
Click to collapse
I have a problem with wakelocks, too. I am running CM 10.1.3 Stable and I get a lot of baseband_xmm_power and wlan_rx_wake wakelocks. I tried different kernels but it's almost the same. When I turn off wi-fi and data the phone can stay at 100% for hours.
Conquerora said:
I have a problem with wakelocks, too. I am running CM 10.1.3 Stable and I get a lot of baseband_xmm_power and wlan_rx_wake wakelocks. I tried different kernels but it's almost the same. When I turn off wi-fi and data the phone can stay at 100% for hours.
Click to expand...
Click to collapse
I'm on cm10.2 and solved the baseband_xmm_power wakelock issue using the Optimus Prime kernel (http://forum.xda-developers.com/showthread.php?t=2328353) if I have mobile data and wifi on the battery still doesn't last a day, or even 12h, but if I just turn them on when needed I can get close to 2 days of battery time.
merlykx said:
I'm on cm10.2 and solved the baseband_xmm_power wakelock issue using the Optimus Prime kernel (http://forum.xda-developers.com/showthread.php?t=2328353) if I have mobile data and wifi on the battery still doesn't last a day, or even 12h, but if I just turn them on when needed I can get close to 2 days of battery time.
Click to expand...
Click to collapse
that's the nature of smartphone.. you have to use it in smart way
if you're hungry, do eat.. if you're not, then why bother eat at all...
use it when you need it, that's the point of battery life issue
trikomlabs said:
that's the nature of smartphone.. you have to use it in smart way
if you're hungry, do eat.. if you're not, then why bother eat at all...
use it when you need it, that's the point of battery life issue
Click to expand...
Click to collapse
Using it in a smart way doesn't help at all if you have wakelock issues. Half of your battery can be gone over night without using the phone, even with everything off.
Related
ok....am totally depressed with the awful battery loss that i am left speechless!!!...
here's what i did
3 and a half hours on standby....45 minutes of music playback on headphone in LOW volume.
1/2 hour of angry birds @ full brightness.
15 minutes of surfing @3g with full brightness.
rest the phone was idle.
tried battery calibration, wiped battery stats, using task manager regularly. nothing helps.
v20? mine draining batt as well..
Im on temasek P20-32 and using Wi-Fi more than usually and battery is droping down every minute. Ill try kernel nova 11c and hope that this is my last chance.
Sent from my Optim Black using TAPATALK
cyanogen sucks for battery, it will drain like hell with wifi on
Mine also drain battert very fast! even in my sleep time. but the strange thing is even battery reached to zero, it doesn't turn off! i think it has a problem with battery level indicator.
Ps. now i'm using V20N kdz. considering about turning back to V10E Thai but regreting the smoothness of gingerbread
same here with V20N when i sleep i put`it in plain mode with 90% when i wake up the battery was 0% and now i`m back to V10F in battery monitor say`s at a certain hour/min the battery from 70% was gone to 0% and about activities that drain nothing strange , seems normal like battery monitor say`s
I have some tips for the battery:
- use your phone till it drops to 1%
- reboot you phone
- charge it till 100% (don't use your phone while it's charging)
- then turn it off
Believe me,it'll last for a week
Sent from derp-mobile
Maybe you just have ****ty ( malfunctioned) batteries ? Buy new ones and test.
I am NOT sarcastic.
OP where are you? I am using CM7 #39 stock kernel, with no simcard, dropped 6% in 8.5 hours idle. But if there's data connection available and sync turned on, you only need 10-15 minutes to drop 6% (idle).
We need a good kernel, redy2006 told me if anyone could port Nova v3 kernel into stock GB/CM7 all in one it would be great.
Like universal Siyah kernel i am using right now on my SGS2 (MiUI ICS), very great sleep setup and reasonable wakeup battery use. I can managed up to a day much better than my OB (CM7#39-stock) that can only managed up to 10 hours with the same apps and behaviour.
Sent from my GT-I9100 using Tapatalk
weird and inconsistent battery!!!!
ok...i installed zeus1 over again, wiped batt stat and installed the echelon theme.
sersly, dats wat i did!!!....nw screen set @20% br8ness, played for 20 minutes, 15/20 mins f music playback & a good backup
now i hv 94% left!!!
hi all ,
my phone is having some battery drain issues ...when i use GXP v22 the battery drain 1% everty minute in standby ..no battery in just 2 hours with GDX it last only 10hours
even when i full wiped , clear dalvik , wipe battery stats the battery still dies to quickly ...
so what would you do?
oh ya i got this rather odd problem the battery went standby for about 4hours ..the battery was 75% and still is ..but then when you use like 1 minute it drop another 1% ..why?
will the launcher be he culprit? i use launcher 360 ..
i off everthing , 3g ,0% brightness , no haptic , no wifi , no bluetooth use silent etc...
flash the other rom after flashing gdx without full wipe.. hope it works ...
tohno said:
hi all ,
my phone is having some battery drain issues ...when i use GXP v22 the battery drain 1% everty minute in standby ..no battery in just 2 hours with GDX it last only 10hours
even when i full wiped , clear dalvik , wipe battery stats the battery still dies to quickly ...
so what would you do?
oh ya i got this rather odd problem the battery went standby for about 4hours ..the battery was 75% and still is ..but then when you use like 1 minute it drop another 1% ..why?
will the launcher be he culprit? i use launcher 360 ..
i off everthing , 3g ,0% brightness , no haptic , no wifi , no bluetooth use silent etc...
Click to expand...
Click to collapse
Try another "Rom" i guess it's not the launcher but the rom itself, try XGin 6.2 it has a great batt. life. been using it for over 2 weeks now and i'm pretty happy with the battery life.
wifi always on, calling, texting, media streaming, brightness set @ 70%, surfing and my batt last for about 1day 7hrs..
will it help if i give it some time ? maybe a week or 2 ?
I don´t think so.
But that battery drain IS NOT NORMAL, I normally get beetween 24h and 48h of without charging, sometimes even more, and less when I use Wi-Fi or play 3D games.
There´s a battery calibration app on the market:
You charge you phone, an when it´s at 100% you click a button and then the app wipes your battery stats.
You can also set an alarm that rings when the battery is on 100%.
GingerDX v022 on Stock Kernel, smartass governor (default scaling values of 122->600 MHz)
With WiFi and 3G turned OFF the battery drain is 1% in ~2.5-3 hours (phone idle).
With 3G turned on and WiFi turned off the battery drain (almost full reception) is 1% every 4.5 minutes!!! (~7 hours before the battery dies)
With WiFi turned on and 3G turned off the battery drain is 1% every 15-20 minutes (phone just sitting there causing the usual traffic of Gmail, Talk, Sync).
Try to set your phone to a comparable configuration (no idea if GXP has a CPU Governor setting - in GDX it's in CyanogenMod Settings) and try to replicate the test ...
From the "with GDX it last only 10hours" you wrote it sounds like your phone is constantly connected to WiFi or 3G (and maybe having download/upload traffic going on - therefore increasing the power consumption).
EDIT:
Also note that overclocking (as I recall I spotted a overclock thread of yours) will chew the juice out of your battery at a way faster pace.
Keep in mind that the values may differ depending on the GSM/3G reception ... the weaker the signal, the more power the phone needs to apply to communicate with the tower. If you're in an area where the reception is poor you shouldn't wonder about the battery getting eaten.
As a last resort, keep an eye on what applications you have running in the background. The more crap you got running, the more bat drain you're going to have when processes are fighting over CPU time.
NONO i never on wifi / 3G / bluetooth / GPS ..cause of the poor battery i tried my best to save as much battery as possible ...but in no use =( i cosntantly use task killers and i use smartass governer i think i will try stormvix ..oh! and starting my phone eats about 20% each time i does it ..is this normal?
i tried the battery calibration app ..doesn't do jack =(
should i pcc my phone? and redo everything
tohno said:
NONO i never on wifi / 3G / bluetooth / GPS ..cause of the poor battery i tried my best to save as much battery as possible ...but in no use =( i cosntantly use task killers and i use smartass governer i think i will try stormvix ..oh! and starting my phone eats about 20% each time i does it ..is this normal?
Click to expand...
Click to collapse
"starting my phone" translates into what ... ?
Turning it on (from being powered off) and letting it boot up results in 20% loss of battery charge?
That's NOT normal at all ... your charge should lose 1% at best if it was already close to going down by a percent.
Using the phone for a phone call makes it lose 20% battery charge?
Well, that entirely depends on the length of the call and the reception. Going down 20% would be about... hmmm... 1.5h talking time (estimated from the top of my head)?
At any rate ... a rapid loss of charge like your 10 hours while the phone just idles around twiddling thumbs and not being connected to WiFi or 2/3G is not normal no matter how you look at it. EDIT: Unless you overclock sky-high and running the performance governor which would keep the CPU fully clocked no matter what's currently going on.
starting in the sense like restarting eg entering cwm / xrec ...i flashed back to stock now ...gonna do it all again .. i knew this was too much drain i off everything even background data and i use smaratss 122 - 710 , even my brightness is 9% ...
B.Jay said:
Unless you overclock sky-high [...]
Click to expand...
Click to collapse
tohno said:
i use smaratss 122 - 710
Click to expand...
Click to collapse
Just for testing purposes to see if the bat drain stays within a sane stretch I recommend you stay with 122-600MHz.
It would also help to install some app/widget that monitors the current clock of the CPU - just to see if there's something which keeps your CPU busy and therefore running at full throttle. I recently saw something like that, I just fail to remember where and what the name of the app was ...........
okay so i flashed to stock last night ..i on everything sync , wifi , bluetooth , data etc for 5 hours it drained only 10% surpisingly ...after 10seconds it restarted and dropped to 3% ..odd...and i fully charged my phone to 100% and left it there for about 1hour and it dropped from 100% - 86% ..any solution?
There are only two things left that I would consider ...
a) The circuitry monitoring the battery charge is bogus and pulling random values out of thin air (would indicate a hardware defect in the loading circuit on the motherboard).
b) Any change the guys who repaired your phone from the hard brick returned your device with a old, almost dead, battery instead of the shiny new one you had in your W8 that bricked (you know, shady retailers thinking to make a few extra bucks by selling off the battery of your dead phone as used-part replacement to earn a "little something extra")? This would closer match to the 10->3% / 100->86% jump symptoms - the battery being about dead and therefore unable to hold the charge and draining like wild.
I don't know which of these two options to favor, but I would give "b" a 51% chance over "a".
EDIT: Stay with the Stock ROM and complain with either the repair shop or SE as the drain problem can be reproduced any given time. This should actually be covered through warranty as the original phone wasn't that old, and the repair is somewhat unrelated. The battery should at least last for two years before you should observe major degrades.
In threads in the Optimus2X development forum I often see posts that praise the battery life using new ROMs or basebands or RILs. The numbers always surprise me and make me jealous. I have read about some guy whose phone loses about 3% battery during the night, or some other guy who still had 75% battery left after 7h of 'normal' usage.
Today, I unplugged my phone from the charger at ten in the morning and 3 hours later, I had 80% battery left, with the phone only resting in my pocket in standby. Now, about 8 hours unplugged from the charger and less than normal use (15 min browsing, one GPS localization, two SMS sent) I am 25% battery.
I have disabled WiFi, decreased display brightness to the lowest value, always disable GPS & bluetooth unless I need it (which is very rare).
I am currently on owain's CM9 build 62, baseband 313 and RIL 218. I have also tried BB 725/RIL 725 (which caused big problems) and BB 420 / RIL 1120. Both did not give me a noticeable longer battery life.
Whats up with my phone or battery? How can I extend my battery life to the numbers said in the beginning?
battery
buy a bigger battery
i have a 3500mAH battery
more then 2 day on 1 charge
look on dealextreme
12 hours 30 mins, with 25% battery left
Over locked to 1.4ghz
Screen on 2 hrs
Calling 2 hrs
So yeah , I guess its pretty heavy use...
It also goes alright (;
sent from my wii remote
i would say something is definitely wrong with your phone, rom or kernel. i use my phone even to play, games like dead space and more, and my battery always lasts for 1 day at least, also oc'd to 1.4 ghz.
skylinegt77 said:
i would say something is definitely wrong with your phone, rom or kernel. i use my phone even to play, games like dead space and more, and my battery always lasts for 1 day at least, also oc'd to 1.4 ghz.
Click to expand...
Click to collapse
I sense slight exaggeration there buddy (;
Jokesss
sent from my wii remote
I had the same prob, But I solved it,
now my phone survives a full day with normal usage.
Receiving/sending mails tweets facebook post G+ browsing the web etc.
try to drain your battery until your phone shuts down by itself
then fully recharge it after that unplug it and start it up again,
I hope it helps it did so for me.
Hello I have a problem with my 4 month Nexus 7 3G. I noticed that recently the battery drains very fast in standby mode - for example 6-7% per hour. I installed better battery stats to see the deep sleep time and kernel/partial wakelocks... For example the tablet is 1hour and 20 mins in deep sleep and 1 min awake and has gone from 100 to 94 just in hour... Put the the tablet in Airplane mode, did hard reset, reflashed stock rom - no go... Is it possible that my battery has failed? And is it covered by warranty?
kopchev said:
Hello I have a problem with my 4 month Nexus 7 3G. I noticed that recently the battery drains very fast in standby mode - for example 6-7% per hour. I installed better battery stats to see the deep sleep time and kernel/partial wakelocks... For example the tablet is 1hour and 20 mins in deep sleep and 1 min awake and has gone from 100 to 94 just in hour... Put the the tablet in Airplane mode, did hard reset, reflashed stock rom - no go... Is it possible that my battery has failed? And is it covered by warranty?
Click to expand...
Click to collapse
Read the first post in the BBS thread, do it. Post the log to their thread. Perhaps they can come up with something.
First thing I'd try is turning off wifi while it's asleep and see what happens. I've always turned off wifi while my tablets slept and I see about 1% every 6 or so hours, at most.
I factory reseted the tablet, switched the cellular off, the wifi off, turned off sync, didn't install or update any program... I put it in standby mode and after 57 mins it was 5% down. No kernel wakelocks, nothing at all, just deep sleep.
As with any form of problem isolation, you are going to try a few experiments to figure out where the problem is... and where it isn't.
If the problem is the battery itself, it will self-discharge even when the tablet is off and disconnected. (Not only that but the battery might be slightly warm when disconnected, but it might be hard to detect that without an IR Camera).
One experiment to eliminate this possibility is to charge the battery, turn the tablet off, and disconnect the battery overnight. Reconnect the battery, boot the tab, and then examine
the change in battery VOLTAGE, NOT "percent charge" *
You can use something like the app "Current Widget" to read the before/after voltage.
Note that you can't just turn the tablet off in this experiment without disconnecting the battery connector, as there is a possibility the the motherboard has a defect that drains power even when the tablet is off; although if you run this first experiment and find no drop in (unplugged) battery voltage, then doing this ("does the battery voltage fall a lot with the device turned off?") is a useful 2nd experiment.
*The TI BQ72451 battery charge controller IC attempts to gauge battery state by measuring both voltage and cumulative charging/discharging currents (by measuring voltage across a small resistor in the battery terminal path). This means that it is stateful (it has onboard flash memory) and more importantly that the "% charge" value this circuit produces is a computed value, not a measured value. If you are experiencing battery problems, the % charge value should be regarded with some amount of suspicion. For a healthy battery with about a 0.6-0.7v range (say 3.5v-4.2v), a 10% drop in battery capacity will be roughly a drop of about 0.06 volts.
This isn't a solution - but a place to start to eliminate some possibilities.
good luck
PS what does
Code:
$ cat /sys/class/power_supply/battery/health
return? (Should say "Good")
My tablet does the exact same thing. My battery average is 20 hours with use.
Sent from my Nexus 7 using xda premium
It says the battery health is good. I tried everything - reflashed the factory image, even 4.2.1 image, reset to factory defaults, removed the sim, switched off the wifi/nfc/3g... it drains exactly 5%/h in standby and the battery grafic show straight line downwards...The betterbattery stats says the 99% of time the tablet spends deep sleep. I came to the following conclusions: a) the battery has failed, b) the chip (or component) reading the battery stats is faulty c) a hardware defect that drains battery...It's not software since there are no indications that any piece of software is draining the batt.
If you turn the tablet completely off, let it sit for a few hours, and then boot the tablet, does it also lose charge this way as well?
How about if you do the above experiment - but unplug the battery completely instead of simply turning the tab off?
Doubtful this will fix anything, but it will give you more info about where the problem lies.
Along this same line of thinking, I note you have said nothing about voltages. Imagine that the charge controller chip thought that the 100% charge state was a lower voltage than what it should be - this would show up as anomolously large discharge rates (%/hr) even if the current draw was nominal.
I think 100% should be around 4150-4200 mV, and 5% around 3500 mV. (You can use the "Current Widget" app to observe the voltage in a convenient way.)
good luck
bftb0 said:
If you turn the tablet completely off, let it sit for a few hours, and then boot the tablet, does it also lose charge this way as well?
How about if you do the above experiment - but unplug the battery completely instead of simply turning the tab off?
Doubtful this will fix anything, but it will give you more info about where the problem lies.
Along this same line of thinking, I note you have said nothing about voltages. Imagine that the charge controller chip thought that the 100% charge state was a lower voltage than what it should be - this would show up as anomolously large discharge rates (%/hr) even if the current draw was nominal.
I think 100% should be around 4150-4200 mV, and 5% around 3500 mV. (You can use the "Current Widget" app to observe the voltage in a convenient way.)
good luck
Click to expand...
Click to collapse
Hi, I tested the things u mentioned. The n7 charges until it reaches 4200 MV. It doesn't drain battery when powered off. Here are screenshots of usage:
kopchev said:
Hi, I tested the things u mentioned. The n7 charges until it reaches 4200 MV. It doesn't drain battery when powered off. Here are screenshots of usage:
Click to expand...
Click to collapse
Note that the charger chip may not report a "% charge" drop even if the battery is self-discharging with the device off, as no current is detected in the battery lead. Hopefully what you mean by "doesn't drain" is "voltage didn't fall".
Well, I guess you now know that the problem probably is not the battery (although you should still confirm that the almost-discharged voltage is down around 3.5v).
Doesn't solve your troubles though. That 5%/hr drain with the tablet sleeping should be closer to 5% in 12 hours, so your tablet is doing at least 10x worse than it should.
Warranty return to Asus at this point?
Will relock the bootloader and return it to the Asus authorized service in bulgaria.
kopchev said:
Hi, I tested the things u mentioned. The n7 charges until it reaches 4200 MV. It doesn't drain battery when powered off. Here are screenshots of usage:
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wow, that is something. very nice discharging graph.
A nicer discharging graph...
ando1993 said:
wow, that is something. very nice discharging graph.
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Here is the graph after I factory reseted the N7 chrged to full and turned off the screen.
I've seen my battery standby performance get worse these last couple of weeks - I used to get between 5-7 days of standby time on a charge, if left unused, but the last few weeks it only goes for 2/3 days now, not sure what's changed...
NFC services were killing mine... Shut NFC off, killed the service, and it's been great for the last few days.
What is the average battery stats for nexus 7 ..
Sent from my Nexus 7 using xda premium
if you go into maps.....settings...location settings...uncheck all options, that seemed to do the trick for me
It's most likely the baseband_xmm_power wakelock, it's a nasty one. It comes and goes when it likes. Google hasn't come out with a fix yet. Reverting to stock doesn't help it. the only fix is to run Franco kernel, he patched it.
.Sent from my Nexus 7 using xda app-developers app
androo45 said:
It's most likely the baseband_xmm_power wakelock, it's a nasty one. It comes and goes when it likes. Google hasn't come out with a fix yet. Reverting to stock doesn't help it. the only fix is to run Franco kernel, he patched it.
.Sent from my Nexus 7 using xda app-developers app
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Mkernel also has it fixed, same with trinity and dmore kernel and I'm pretty sure faux kernel does as well, as for the stock kernel, it does not have the fix
Sent from my Nexus 7 using xda app-developers app
My battery was being murdered. Eventually I traced it to having Beautiful Widgets on the lock screen. Removed that and battery life is fantastic again. Are others using widgets on the lockscreen?
Try wakelock detector from playstore which will find you your wakelocks...
i'm facing this problem that battery of my droid turbo draining to fast as it is having 3900mAh battery but draining really too fast tell me solution so that i can recover my battery life
im Having Adroid version Lollipop 5.1
Humza Arain said:
i'm facing this problem that battery of my droid turbo draining to fast as it is having 3900mAh battery but draining really too fast tell me solution so that i can recover my battery life
im Having Adroid version Lollipop 5.1
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Are you using the version that came with your phone, or are you using something custom (i.e. CyanogenMod or Resurrection Remix)? Did you see what "supposedly" is the highest percent drainer under Settings->Battery?
calsurferpunk said:
Are you using the version that came with your phone, or are you using something custom (i.e. CyanogenMod or Resurrection Remix)? Did you see what "supposedly" is the highest percent drainer under Settings->Battery?
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im using orignal software of verison and it is draining battery so fast
high percent of battery drainer is my display and cell stand by
Humza Arain said:
im using orignal software of verison and it is draining battery so fast
high percent of battery drainer is my display and cell stand by
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Based on that, the only thing that I can think of is to turn down your display brightness (even try setting to auto if you haven't already) and if your cell service is often weak/non existent, then put it in airplane mode temporarily to turn off your cell radio (which will also kill calling and texting though). It also depends on just how fast your battery is draining. How much time are you getting with it on? How quickly is it draining (percentage wise per hour for example)?
calsurferpunk said:
Based on that, the only thing that I can think of is to turn down your display brightness (even try setting to auto if you haven't already) and if your cell service is often weak/non existent, then put it in airplane mode temporarily to turn off your cell radio (which will also kill calling and texting though). It also depends on just how fast your battery is draining. How much time are you getting with it on? How quickly is it draining (percentage wise per hour for example)?
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i think its about 10% per hour when i use wifi internet on my phone .. and except this while i play game draining battery also fast i not getting its my battery issue or my software issue my 11% of battery consumed by my screen and cell standby consume 5% of battery as per my battery monitor in my phone
Humza Arain said:
i think its about 10% per hour when i use wifi internet on my phone .. and except this while i play game draining battery also fast i not getting its my battery issue or my software issue my 11% of battery consumed by my screen and cell standby consume 5% of battery as per my battery monitor in my phone
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Click to collapse
It sounds like some of that is just the software then as well. Before I unlocked the bootloader and installed CyanogenMod on mine, I used to see it drain quite a bit faster (especially during standby when the screen was off). A big part of that was being able to change the CPU clock speeds (which I lowered on mine) and adjusting it to where many apps couldn't wake up the phone anymore. When doing heavy gaming though, it's pretty much always guaranteed to drain quickly.
calsurferpunk said:
It sounds like some of that is just the software then as well. Before I unlocked the bootloader and installed CyanogenMod on mine, I used to see it drain quite a bit faster (especially during standby when the screen was off). A big part of that was being able to change the CPU clock speeds (which I lowered on mine) and adjusting it to where many apps couldn't wake up the phone anymore. When doing heavy gaming though, it's pretty much always guaranteed to drain quickly.
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but im having lillipop 5.1 orignal with latest update but my battery draining bit fast
Humza Arain said:
but im having lillipop 5.1 orignal with latest update but my battery draining bit fast
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Click to collapse
I'm not saying the version you are using, but the actual stock software in general. It's definitely not optimized as well for battery life as it can be in a custom ROM and the bloatware doesn't help either. Using the phone for gaming will also take a hefty toll, regardless of what you are running.
calsurferpunk said:
I'm not saying the version you are using, but the actual stock software in general. It's definitely not optimized as well for battery life as it can be in a custom ROM and the bloatware doesn't help either. Using the phone for gaming will also take a hefty toll, regardless of what you are running.
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so which thing i do to get more battery life? guide me
Humza Arain said:
i think its about 10% per hour when i use wifi internet on my phone .. and except this while i play game draining battery also fast i not getting its my battery issue or my software issue my 11% of battery consumed by my screen and cell standby consume 5% of battery as per my battery monitor in my phone
Click to expand...
Click to collapse
Do you mean 10% per hour of screen on time or screen off time? If you lose only 10% for an hour of screen on, you probably get 8-10 hours of screen on time per charge. I only get less than 5.
battery draining MM droid turbo
Hi Friends; after updating to MM, my droid turbo seems to have a 2000mah battery...done wipe cache partition before and after the new MM, an hard rest but in stanby or in aiplane mode the battery sucks 10 points and more in a few hours...could you help me? Please...
p.s. idle 22% standby 22%...no gps, no bluetooth, no notification, just a few applications...
Hi Friends; since updating to MM, my droid turbo seems to have a 2000mah battery...done wipe cache partition before and after the new MM, an hard rest but in stanby or in aiplane mode the battery sucks 10 points and more in a few hours without doing anything...could you help me? Please...
p.s. idle 22% standby 22%...no gps, no bluetooth, no notification, just a few applications...I tried, after charging to 100%, leaving the phone for some days without doing anything (no wifi, no connection, no signal) and I was surprised to read such draining as in the screenshot.
Anyone can reply and help me? What's the difference between idle and standby? The phone has a stock firmware, never rooted