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Some say let it drain all the way, then fully charge...some say don't let it drop below 50%...i tried searching, but couldn't get solid info....so what really is the best way to charge a battery in order to get maximum battery life? thanks
Lithium ion batteries shouldn't be fully discharged on a regular basis; they prefer partial charges. It's useful to fully discharge occasionally however so that the phone knows the full range of the battery's charge states or the battery meter will be inaccurate.
It might be better to discharge to some particular level than another, but that's impractical. Best practice as far as I'm aware is to charge whenever possible. At least we have user-replaceable batteries if they do start to get weak!
Yes, 20%-40% drain is ideal balance of long-term battery life and not changing too often. Of course, the lower end of this would mean about an hour of use if you have the display on the whole time. So, best thing for the long-term life and ability to use your phone cord free is to own 2 batteries and change when possible.
I don't even bother to "calibrate" (run the battery down 100%) because I switch it often enough and I don't need to know if I have 40% left instead of 55%. If I have high use or only one battery on me then sometimes I'll let nature run it's course, but I never go out of my way for it.
Well in all honesty, I have to say that I've been doing the complete drain and full recharge for about 5 - 6 cylces since I got the phone about a week ago. Furthermore, I have set my autokiller to aggressive and I've seen a big improvement in the battery life. i.e. from 23 hours to about 1d and 20 hours.
Hey everyone,
I'm kind of a noob when it comes to all things XDA (but I'm learning.) Anyways, I was wondering what kind of battery life you all get from the different ROMs you've flashed.
So far I've only flashed Nero, Bionix, and Flagship. I had pretty good battery life from Nero, but I was wondering what kind of battery life that you've experienced with other ROMs like Axura and Trigger (because with Bionix and Flagship, my battery life has been fugazi.)
Thanks in advance, y'all.
Sorry if this topic comes up often.
With axura my battery lasts 16 hours with possibly 600+ texts and youtube alot music about 1 hour a few phone calls alot of web.
I only need it to last 12 hours because I charge overnight so I'm good.
I reconditioned too btw
Does reconditioning actually improve battery life or does it simply make the battery indicator more accurate?
It makes it more accurate. Which in terms helps battery because it reads it perfect so ull last longer
Axura is widely considered to have the best battery life. After flashing a new rom you should let your phone charge to 100% and then wipe battery stats in CWM recovery. It can take several days for reading to be taken from the battery so your battery life will usually improve over time.
Hey, I just wanted to thank you all for your input. I decided to go with the latest version of Axura, and so far I've been loving it. I'm not even a day in and I've noticed a difference.
Thanks once again.
+1 On Axura best battery life........
soltheman said:
Hey everyone,
I'm kind of a noob when it comes to all things XDA (but I'm learning.) Anyways, I was wondering what kind of battery life you all get from the different ROMs you've flashed.
So far I've only flashed Nero, Bionix, and Flagship. I had pretty good battery life from Nero, but I was wondering what kind of battery life that you've experienced with other ROMs like Axura and Trigger (because with Bionix and Flagship, my battery life has been fugazi.)
Thanks in advance, y'all.
Sorry if this topic comes up often.
Click to expand...
Click to collapse
first thing to do is
Charge Until 100%
choose rom
Run The Phone All Day, Let It Die
Charge Until 100%
Reboot Into Recovery
Select Reinstall Packages (Do it again if needed)
Select Advanced
Select Wipe Battery Stats
Laazyboy said:
Does reconditioning actually improve battery life or does it simply make the battery indicator more accurate?
Click to expand...
Click to collapse
Neither. "Conditioning" skews the discharge curve from which the battery indicator indexes it percentages. As a result, the battery appears to discharge at slower rate ("better battery life") over the first two-thirds or so of the discharge cycle and then craters like a lead balloon at the end of the discharge cycle. (You really need to have a battery indicator that shows discharge in 1% increments, such as "blue segmented battery mod" to see this.)
To understand this requires a light understanding of the so-called "battery stat tables." There is an entry in the battery stat tables for each percentage of remaining battery charge, in increments of 1%. So, the table contains entries 100%, 99%,... down to 1%. Associated with each percent of remaining charge entry in the table is a battery terminal voltage and a timestamp. Unfortunately, the smart phone cannot measure actual remaining battery charge. All the system knows is a series of battery terminal voltage measurement taken at even periodic intervals. The algorithm builds the battery stat table to relate each measured voltage to a corresponding “percentage of remaining charge” entry in the table. In normal operation, the system accumulates these measurements over several charge/discharge cycles and analyzes the rates of changes of voltages to refine the discharge curve. After several charge/discharge cycles the percentages, which are displayed on the screen as a battery indicator, become more refined and accurate.
At some point someone apparently thought that it would be a good idea to attempt to manipulate the process of building the battery stat tables. This resulted in the so-called "conditioning procedure." The conditioning procedure consists of fully charging the battery, then deleting the battery stats, and then draining the battery quickly and completely using heavy loads, perhaps in 1 to 2 hours.
What this accomplishes is that the battery stat mechanism builds a new, steep discharge curve based upon the rapid discharge operation. This crude, initial discharge curve has "learned" that the battery should discharge quickly, because it did so during its "training” discharge. More specifically, each "percentage discharge" entry for the first 1/2 to 2/3 of the discharge curve (corresponding to the first 50-75 table entries) will be associated with an abnormally lower voltage (due to the faster rate of decrease in voltage during the "training" discharge cycle) than would be the case if the table had been built normally, over time.
Now, let us think about what happens during the subsequent discharge cycle. We charge the battery to full. Now we begin to use the phone normally, discharging the unit over a period of 12-18 hours, for example. Now the phone experiences a slower rate of change of battery voltage over time, because the load is much lower than that of the forced "training" discharge. Now the algorithm measures a voltage and then attempts to map that voltage to a corresponding percentage discharge table entry. The result is that the battery indicator on the phone shows a very low rate of discharge over many hours. This leads people to erroneously conclude that the "battery conditioning" procedure results in improved battery life. However, this is merely an illusion. The battery indicator is, at this point, simply displaying an incorrect number for the remaining battery life. As a consequence, the battery indicator must "catch up with reality" later in the discharge cycle. This is manifested toward the end of the discharge cycle as the battery indicator drops precipitously from perhaps 35% to zero in a very small amount of time. In any case, fortunately, the weirdness done by "battery conditioning" goes away within a few days as the battery stat algorithm tunes the discharge curve each discharge cycle to bring it ever further in line with the actual average usage of the phone owner. It is a myth that the battery stats become inaccurate over time. To the contrary, the algorithm continuously tunes the tables based upon usage patterns so that the battery indicator becomes more and more accurate.
I do not know where this practice originated, but I do have a cynical hypothesis. The ROM cookers typically mix-and-match code elements from different software releases and otherwise change up the timing, sequencing, etc. of various processes. Doing so may have battery life consequences, because the resulting mish-mash of components may hinder or prevent sleep mode operation, cause processes to run for more time than they should, etc. You can see how "battery conditioning" could mask an acute battery performance problem during the first few hours after a person has flashed a ROM and is watching performance characteristics especially closely. ‘Nuf said on this subject.
Sample battery discharge chart and accompanying notes attached below.
soltheman said:
Hey everyone,
I'm kind of a noob when it comes to all things XDA (but I'm learning.) Anyways, I was wondering what kind of battery life you all get from the different ROMs you've flashed.
So far I've only flashed Nero, Bionix, and Flagship. I had pretty good battery life from Nero, but I was wondering what kind of battery life that you've experienced with other ROMs like Axura and Trigger (because with Bionix and Flagship, my battery life has been fugazi.)
Thanks in advance, y'all.
Sorry if this topic comes up often.
Click to expand...
Click to collapse
Tutorial for tuning system to increase battery life here:
http://forum.xda-developers.com/showthread.php?t=823025&page=4
xriderx66 said:
With axura my battery lasts 16 hours with possibly 600+ texts and youtube alot music about 1 hour a few phone calls alot of web.
I only need it to last 12 hours because I charge overnight so I'm good.
I reconditioned too btw
Click to expand...
Click to collapse
600 texts in 16 hours is nearly 38 texts an hour, 4,200 texts a week, 18,000 texts every month. WTFBBQ?
First charge brightness set at 50%
What is everyone else getting
bbh4r4l said:
First charge brightness set at 50%
What is everyone else getting
Click to expand...
Click to collapse
That looks pretty damn good.
I was just about to post a thread. Something is draining my battery life and causing Android System to be the highest battery usage. Check out below.
DrexelDragon said:
That looks pretty damn good.
I was just about to post a thread. Something is draining my battery life and causing Android System to be the highest battery usage. Check out below.
Click to expand...
Click to collapse
Can you repost your pictures? They don't seem to be working.
m3lover1 said:
Click to expand...
Click to collapse
What is your brightness set at
bbh4r4l said:
What is your brightness set at
Click to expand...
Click to collapse
Auto brightness.
Not to jack your thread.
But I used my iphone at work to watch videos, ect while there is downtime. I usually watch while it's also on the charger
For the Note series, does anyone know if that "kills" my battery for long term?
I know you can replace battery, but just wondering for future use.
Thanks.
Issue with battery drain due to android system is real
All three people I know that just got the Note 4 were experiencing the same issue I had with excess battery drain with the always generic "android system" taking more battery than anything else including the screen.
I downloaded an app called "System Tuner" and looked the CPU% for Android system and it was a constant 3-4% when the phone was otherwise idle.
I found a post at http://support.t-mobile.com/thread/80459 where they were experiencing the same issue (lose around 12% battery an hour with android system taking a huge chunk of battery). The person from that post was able to address the issue by turning location off, rebooting, turning location on, and rebooting again. After I did this I saw Android system idle at ~0.6% - 1.1% instead. So far I'm getting much better battery life but I'll need to give it some time to know for sure.
Hope this helps!
mine took about 2 full days for everything to finish syncing, downloading, indexing, etc. I had books, news articles, pinned music from google play, etc.
Once that happened, everything is now "normalized" and I'm getting better battery life than I was with the note 3.
Juk3s said:
Not to jack your thread.
But I used my iphone at work to watch videos, ect while there is downtime. I usually watch while it's also on the charger
For the Note series, does anyone know if that "kills" my battery for long term?
I know you can replace battery, but just wondering for future use.
Thanks.
Click to expand...
Click to collapse
Short answer: Maybe, it depends on how you are doing it. Using it while it is charging is not necessarily bad but watching videos and keeping it plugged in while the cell voltage is pegged at 100% will likely deteriorate your battery faster.
Long answer + tips:
Lithium ion batteries are great - they are light, can be made very thin and have excellent energy density but they are also very finiky.
Things to avoid doing with a lithium ion battery
-Charging to 100%, leaving it plugged in overnight is a poor practice(high cell voltages reduce the service life*, stopping the charge at 90%[4.10v] can double the service life, stopping the charge at 80%[4.00v] can quadruple the service life.*)
- Discharging the battery to below ~20% (Li-Ion batteries are somewhat sensitive to deep discharges)
-Charging/exposing Li-Ion to elevated temps or below freezing.
*service life is defined by when a battery can only retain 70% of its rated capacity. Most consumer batteries used in mobile devices have a service life of 500 charge discharge cycles.
It is not uncommon for batteries to lose 30% capacity in 1.5 years or less. Changing your charging and handling habits can double or quadruple a batteries life span.
DrexelDragon said:
That looks pretty damn good.
I was just about to post a thread. Something is draining my battery life and causing Android System to be the highest battery usage. Check out below.
Click to expand...
Click to collapse
LOL your picture took up have my damn screen on my 1080p laptop with 15.7 in screen. It was crystal clear too.
On my 2nd charge, auto brightness. Pretty freakin' amazing battery life....
15.5 hours off the charger with 8+ screen on time!
I got awful battery life on the first charge cycle. It drained 50% overnight. 2nd charge has lasted amazingly long and I still have 64% after 12hrs of average use.
First charge. Battery life has been phenomenal. Brightness on auto.
Did u use any power saving features to achieve that time?
Did u use any power saving features to achieve that time?
Definitely improve battery with recent update and I'm a power user
After the latest update
I dont know why but my phone goes from 100-90 in less than a hr with minimal use while the screen is set at auto, also in the leaving it unplugged in the night the battery also drains like 5 points.
I've been at full brightness and using the hell out of it non stop so far, and I'm at 35% with screen on time at 3hrs 40 min.
No update
Sent from my SM-N910T using XDA Free mobile app
1) Charge ur phone while off untill u reach 100%
2)Remove the battery but dont unplug the phone from wallcharger
3)Reinsert the battery, you will see 0%
4) Let the battery charge, when reach 100% power on the phone without unplugging wallcharger.
Now should be all good
you are kidding right ?
This is the one of the worst advices I've heard..... Overcharging the battery is dangerous.
It will actually degrade the batteries performance
I don't know what to say. Does this work?
Also by battery jumping do you mean those crazy drops between reboots or just drops due to lack of deep sleep?
andu86 said:
you are kidding right ?
Click to expand...
Click to collapse
fburgos said:
This is the one of the worst advices I've heard..... Overcharging the battery is dangerous.
It will actually degrade the batteries performance
Click to expand...
Click to collapse
U know how the LIB works? How Android manage the battery?
Try yourself and see! This is not overcharging
sasank360 said:
I don't know what to say. Does this work?
Also by battery jumping do you mean those crazy drops between reboots or just drops due to lack of deep sleep?
Click to expand...
Click to collapse
Btw the drop between reboots
Battery bin tracks the battery usage giving an estimate of the charge been used, battery .bin gets wiped every time it get to 100%, and the tracking of battery's current starts
As I remember lithium batteries charge in two cycles
1- constant current
2- constant voltage near the full capacity.
But then if you trick the phone to read battery as 0% then you are sending more current to an already full battery overcharging.
The jumping of battery percentage is because a bug in the battery "gauge"
But as always if in wrong, my apologies and I'll be more than happy to read your source.
Biggest issue is that the battery has a very poor C-rating, and has huge voltage drops under heavy load. The reboot battery problem comes from this; when you reboot your phone, or other times as well, the heavy usage spike drops the battery voltage down. Android system them detects this low voltage and just assumed the battery is almost empty. Normally there is some averaging going on to remove these spikes, and even then the battery % only goes down, so when the voltage recovers it just shows the same % for longer. Problem when rebooting is that it only sees this low, under load voltage and acts accordingly.
If the voltage isn't low enough so the phone shuts down, you might get 30minutes of screen time while the battery is showing 1%.
My problem is that the last 14% of my battery lasts under a minute before the phone shuts down. So I just treat 15% as actually meaning 1%.
Also, you can't dangerously over charge the battery, it has protection circuitry built in, and the li-ion charger part will detect the real voltage. This "supercharging" does however cost some long term lifetime from it, so it shouldn't be done too often.
Please excuse me, this is long.
Hello guys. I need some advice. I use I9195.
From the past 2 weeks i am facing serious battery drops
while phone is in standby.
I must mention that in the last 2 months my phone accidentally dropped onto marble floor 4-5 times.
Each time i checked to see if everything was working and everything did. But from the last time i dropped i began to notice this battery drain.
I made sure all hardware is working.
No problem with display even after all those drops.
(only minor scratches)
Earpiece, 2 cameras, speaker, mic, wifi, bluetooth all work fine. Network quality is great. This is the behavior with any rom, any modem and any usage.
When in standby, battery drains upto 2-3% every hour.
No background apps/services , wakelocks or anything that keeps device awake. And yet the drop is steep and is solely due to "cell standy".
I have no screenshots but here is a scenario :::
From 98% to 33% in ,
16hrs usage, 1hr33min awake and 1hr16min screen on.
Wifi enable half the time and 3g data was disabled.
EDIT :: New battery did not solve this drain.
Hey guys. Please suggest what should i be doing.
Read post above. Can new battery help ?
Thanks. [emoji29]
Same problem here i also need help.
From GT-I9192.
My phone dropped 5-6 times and .org works fine now.
NihAl HarvarD said:
Same problem here i also need help.
From GT-I9192.
My phone dropped 5-6 times and .org works fine now.
Click to expand...
Click to collapse
what do you mean by "" .org works fine now ""
Typo
Recently, my XT1575 has been suffering from extreme battery issues. First, my phone battery would last about 6h but die (screen turns off with absolutely no warning). Recently however, my phone will last around 3-4 hours before dying. I was running the same flash of AICP before and after the issue developed, and have now switched to crDroid to see if the issue would be fixed, but it was not. I have included a screenshot of my battery graph by the end of the day. Please note that the gaps between the parts in the graph were only about 2-5min in real life, but show up as significantly longer in the graph for some reason. One thing I have noticed is as if the battery completed flat lines when it is not in use. It is almost as if it is forgetting to count down the battery so it thinks it has more battery than it actually has, but something lower level in the phone knows it doesn't have that much so it shuts down. Any ideas?
https://drive.google.com/open?id=1oxs4NdeLLVEGiaWmoh7tTUHJTiZ8xUTN