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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?
SGS Vibrant flashed with Trigger 3.2 the battery lasts for 1 day with wifi usage and even if kept for overnight it drains about 18-20% of battery should i move to a different ROM ?
You could
Sent from a cell tower to the XDA server to you.
Trigger has had one of the best all time battery life for me a everytime.
I think you need to
A) recalibrate
B) re-check to see if any apps are using battery life.
C) flash a rom if none of that works.
Here we go again for the millionth time.....
But for me trigger had the best battery life.
I'm not on the gingerbread roms and it takes me from 100% to 5% in 8 hours overnight even WITH Juicedefender (seems to be about the same without it also).
If anyone has tips on THAT, I would much appreciate it. I've tried calibrating the battery.
There is a setting that you can turn your radios of from x time to x time overnight. I have mine set for 11-6. If I am on after 11, then I take priority. If not then the setting does.
There is also a setting that will open data/radio every 15m/30m/45m/1h/2h or something like that to get updates for somethings (i.e. Beautiful Widgets). I have mine set at 2h. If I want my data/radio open I will do it myself, hence my long interval.
Been using this app for well over a year so I know how to tweak it a bunch. If you have JD+ see my battery guide and it will tell you more about its tweakiness.
Trust me. This guy knows how to use JD, check out his battery guide. It will be worth your time.
Sent from my SGH-T959 (Samsung Vibrant)
i wish i could get my phone to last a whole day without charging, i just dont complain because i know for a FACT that the reason my phone only lasts 10-12 hours is because of ME. im too stubborn and refuse to switch to battery-friendly usage. the biggest thing that impacts battery is the user/user apps. not rom, not kernel, the battery difference from rom-to-rom and kernl-to-kernel is barely noticeable (unless in the rare case where there is a bug, or developmental defect). if there was ACTUALLY a rom in exsistence that TRULY had superior battery life, then you wouldnt get 5-10 different answers in every single "what is best rom/kernel for battery" thread.
the problem is, people want to believe that they can save battery without changing their usage habits. this simply is not possible. no rom or kernel will realistically do this for you. if you remove 1 brick from a bag full of 15 bricks, the bag will be lighter, but still very heavy. you need to download "spare parts" or "process monitor" from the market and start analyzing the way your apps are acting. also look into data syncs that are happening in the background. apps that stay open behind your back/what they are doing, (an app called "autostarts" can prevent apps from self-running under certain scenarios). animation speed. polling for notifications. gps. wifi scans. overclocking. cpu/ram usage. proper sleep. widgets. brightness. 2g/3g. data usage. call time. text volume. - THESE are the things that really affect your battery life.
bottom line is, if you truly want to save battery you are going to have to get your hands dirty...there simply isnt a one-click (or one-flash) solution.
Hmm so i'm now on MIUI and it seems to be giving better battery life, also have been thinking of getting the extended battery for Vibrant is it worth ?
If it sucks so bad, grab one of these. I have it and it has given me at least a 20% increase in battery life. BTW, you must listen to the instruction for the Battery if you get it. 4 or 5 full Drains to 0% and then charge to 100% while device is powered off and re-calibrate after each of these full charge cycles.
http://www.amazon.com/Anker-1800mAh...TNYE/ref=sr_1_3?ie=UTF8&qid=1325868638&sr=8-3
switch to Neo's ICS .
it rocks
Cellanos said:
switch to Neo's ICS .
it rocks
Click to expand...
Click to collapse
But the gps doesn't work on it correct?
What about the extended battery which is around 3500Mah
I just got the 1800 mah batteries for the Epic 4g. They fit in the vibrant like a glove and my battery life has been significantly lengthened.
Sent from my SGH-T959 using XDA App
Winning
dinjo_jo said:
Hmm so i'm now on MIUI and it seems to be giving better battery life, also have been thinking of getting the extended battery for Vibrant is it worth ?
Click to expand...
Click to collapse
sent from my Sensation XD
I have an i9505 running resurrection remix 5.5.6 with alucard kernel. all was going ok-ish until I used the battery calibration app to delete the batterystats.bin file. since then the battery will only charge up until the high forties or low fifties in percentage terms. the battery was fully charged when I calibrated it, it's really getting on my nerves now.
could it be a kernel thing ? I have fast charge enabled in alucard...
any help would be appreciated !!!
1. Do not use battery calibrating apps. They are useless. They are for old phones and are useless now.
2. Deleting batterystats is useless. Do not do this anymore. Android can take care of it.
3. You can try a diffent ROM/kernel. Maybe that wil fix it.
For the future let Android handle you battery. It's perfectly capable of doing that.
Even on older phones battery calibration apps were useless, because Android always deleted the batterystats.bin file when the battery was charged to 100%.
OP, contact Anker and see if they have an app to reset the battery percentage. Some companies, like Mugen Batteries, offered such an app because the device itself couldn't recognize when the battery was at 100%.
I manged to get it fully charged today and I'm wondering if it's related to alucard kernel as this only seemed to happen when I was running the first two cores at different values from the last two.
be interested to hear if anyone else gets the same thing if they recreate settings like that...
still, I'll look into that anker app angle. I also have a zero lemon battery that doesn't seem to give it's proper capacity. personally I think Samsung Androids are quite poor with batteries in general, like your percentage going up after you've put the phone down and stopped using it, or the last 2 % lasting longer than the previous 20 (on extended batteries at least)...
Hello,
I read in the internet that is not recomended charge 100% the phone's battery. It's about the battery life. I want to know if it is really true....
Sorry my bad english :cyclops:
Maybe if you want to keep the phone for 5 years you'll notice a difference in battery life by keeping it charged between 20-80% but rarely does anyone do this.
True? Yes, it is. In the same way that it's true that a (properly done) overclock on a CPU will shorten it's lifespam. Yes the overclock will shorten the CPU's lifespam, from 20 years to maybe 15.
Your battery will degrade regardless but by the time it becomes an issue, you'll probably have moved on to a new phone anyway.
peachpuff said:
Maybe if you want to keep the phone for 5 years you'll notice a difference in battery life by keeping it charged between 20-80% but rarely does anyone do this.
Click to expand...
Click to collapse
But charging the battery in only 80% means that I will have less SOT before charge again
Tony_Starkus said:
But charging the battery in only 80% means that I will have less SOT before charge again
Click to expand...
Click to collapse
The theory behind this apparently is that how battery likes to be in certain battery levels based on the voltage.
Based on what I understand, the phone/battery likes it better if battery is not less than 20 and not more than 80.
This means that if you charge between 20 - 80, you can have a lot more charge cycles as compared to 0 - 100. This could also mean that the battery can last longer in terms of longevity.
But as mentioned, not many people does that unless they are looking to keep their phone for more than 3 years.
These are based on my limited understanding and my own experiences.
You can google battery university if you need more info.
Tony_Starkus said:
But charging the battery in only 80% means that I will have less SOT before charge again
Click to expand...
Click to collapse
albel said:
The theory behind this apparently is that how battery likes to be in certain battery levels based on the voltage.
Based on what I understand, the phone/battery likes it better if battery is not less than 20 and not more than 80.
This means that if you charge between 20 - 80, you can have a lot more charge cycles as compared to 0 - 100. This could also mean that the battery can last longer in terms of longevity.
But as mentioned, not many people does that unless they are looking to keep their phone for more than 3 years.
These are based on my limited understanding and my own experiences.
You can google battery university if you need more info.
Click to expand...
Click to collapse
Most of the information here is correct I have an am always doing battery tests research and such
80% and 20% are the magic number for maximum overall life of a battery...
Also no on mentions heat and cold also degrades the cells inside
I also recomend if you make it through the day shutting off fast charge......
If you think about it it is simmilar to any other battery,
Take a car for example I know i know lead battery vs lith ion but slow charging is the best method for any types of battery life in the long run.... it does not excite any of the ions as much as fast charging......
Fast charging on auto batteries is what we call a surface charge it quickly excites the electrons for a quick zap of juice but then over all that spreads out among all of the rest of the electrons quickly draining and shortning over life....
Slow charge generates less heat as well as does what we call a deep charge....Which is better of coarse I have had automotive batteries say like in my eclipse its 9 years old and it was a 800 amp battery and even after 9 years now
It retains over 650 amps on battery tests because i slow charge it once a month for a couple days be it need it or not..
Also if you guys are over worried and snap dragon try part cyborg rom the engineering kernel used by samdung only allow for a 80% charge.....I get more screen on time than stock on less charge because it is optimized so well....any where from 6 to 8.5+ hours and that is more than enough more my needs....
Also wireless chargers generate heat which degrade life on batts cells.....
I can get way more into detail on any of these if any one wishes
TheMadScientist said:
Most of the information here is correct I have an am always doing battery tests research and such
80% and 20% are the magic number for maximum overall life of a battery...
Also no on mentions heat and cold also degrades the cells inside
I also recomend if you make it through the day shutting off fast charge......
If you think about it it is simmilar to any other battery,
Take a car for example I know i know lead battery vs lith ion but slow charging is the best method for any types of battery life in the long run.... it does not excite any of the ions as much as fast charging......
Fast charging on auto batteries is what we call a surface charge it quickly excites the electrons for a quick zap of juice but then over all that spreads out among all of the rest of the electrons quickly draining and shortning over life....
Slow charge generates less heat as well as does what we call a deep charge....Which is better of coarse I have had automotive batteries say like in my eclipse its 9 years old and it was a 800 amp battery and even after 9 years now
It retains over 650 amps on battery tests because i slow charge it once a month for a couple days be it need it or not..
Also if you guys are over worried and snap dragon try part cyborg rom the engineering kernel used by samdung only allow for a 80% charge.....I get more screen on time than stock on less charge because it is optimized so well....any where from 6 to 8.5+ hours and that is more than enough more my needs....
Also wireless chargers generate heat which degrade life on batts cells.....
I can get way more into detail on any of these if any one wishes
Click to expand...
Click to collapse
Have just started reading about s8 stuff and have not rooted yet. Does the kernel allow you to set maximum charge? I remember back on sgs1 specific kernels allowed this but haven't seen it much since then
c-pimp said:
Have just started reading about s8 stuff and have not rooted yet. Does the kernel allow you to set maximum charge? I remember back on sgs1 specific kernels allowed this but haven't seen it much since then
Click to expand...
Click to collapse
no samsung preset it at 80% and since the bootloaders locked no way to modify it
Ahh I see. Thanks for clearing that up. Looks like since I'm on oreo now I'm stuck without root so I won't be playing with any of that stuff. Have a good one!