Know your battery & maximize it [Lithium-Ion]
I understand each has it's own way of fighting this never-ending battle, since battery is something we can never have enough of. It's always good to squeeze an hour more or prolong the healthy live of a battery as much as possible. Some are lucky to have removable battery so we can replace it with ease, while others with uni-body design smartphones are pretty much stuck (unless you wanna spend some relatively big bucks) with the one their phone came with. So maintaining it is quite important.
"There is no black and white in the battery field, only many shades of gray. The battery behaves much like us folks — it’s a black box with a mind and mood of its own; it’s mystical and unexplainable. For some users, the battery causes no problems at all; for others it’s nothing but a problem."
Isidor Bauchmann
Anyways, let me share you my way of taking care of a battery and my settings that I use to extend battery life as much as possible (my Screen on Time SS bellow). Again, it is the way i use, operate. It's far from perfect.
Disclaimer: I am not an expert on batteries nor Android, it's simply knowledge/info what I gathered through my time with Android smartphones. Everything I know I read somewhere (article on net or post right here on XDA or some other forum.) Nothing you'll see here is my credit!
First I'm going to cover maintenance (charging), then my software setup, and lastly a way of "calibrating" a battery.
1. MAINTAINING Li-Ion battery
Let me just say there are many theories out there about how to maintain a battery. I've seen many times that you should charge the to max (100%) and discharge them to min (0%) as batteries have so called "memory", thus you wan't to fully charge&discharge so that battery doesn't get "lazy" or rigid. This is just wrong. Misconceptions like that are very common! Some guy even said it was written in product manual when he bought a video camera back in 2005. Guess that Canon just printed "common" knowledge back in 2005.
The fact is, batteries are prone to age due to corrosion! We can influence that ageing with proper care...
The fact is that you should keep your battery state between 20-80%... Charging your battery to 100% and discharging it to 0% is considered stressful for the battery. Also, fast-charging is not the best way of charging. Pushing higher voltage is also more stressful for the battery and chemical reactions within, than charging it with lower voltage. Yes, "fast-charge" with higher voltage will speed up the Stage 1 of a charge and reach 70% of a charge quicker, but Stage 2 - saturation charge will take longer. If you are in a hurry and need some juice, that's good and comes in handy. New devices like Note4, Nexus6 and others promote fast-charge and brag how fast can you charge your phone to 70% (like just in 35 minutes you'll reach 70%). You might notice that in-fact phone says 70% when you unplug your phone from the charger, but battery will probably also drop faster than normal. That is because Stage 1 was complete in a very short time, but Stage 2 (saturation charge) never kicked in.
But as said, full charge is not even preferable for Li-Ion based batteries. I'd say you should make a full charge when you know your day will be long. But if possible, on a daily basis you should keep the battery level from 20-80%. That way you won't put battery through much stress and prolong overall battery life. Also, using a lower amped/voltage charging is preferable. I often charge my phone with computer via USB cable. It takes 4 hours or even more to charge my Note 3, but this way it is way less stressful for the battery. Some battery manufacturers intentionally limit chargers to stop charging after Stage1, to prolong overall battery life.
Also, when battery is charging it heats up and battery gets agitated so battery readings can be a little off. It needs to cool down so it reaches equilibrium and battery readings will be accurate again. This might sometimes explain why battery seems to unreasonably drop and after some light usage it stays on certain percentage or drop with normal rate... (battery level readings can be accurate to certain extent....)
So to sum up: slow charge and keeping battery percentage off of extremes are 2 things your battery will appreciate...
Also, temperature is also an enemy. We'll get to that in 2nd topic below.
2. MY SOFTWARE/HARDWARE Setup
First of all, a base for a good battery life is good ROM and battery efficient kernel. If those are bad, you'll have hard time (maybe even impossible) to reach a good run. I happen to use @temasek ROM & kernel that happen to be very battery efficient.
If you are root, you should take that advantage and install some apps that will help you with battery life.
I (and many others...) use these:
- wakelock detector
- faux clock ,
- Battery Stats plus,
- and Better battery Stats for keeping an eye on apps that eat your battery the most.
You can use wakelock detector to see if there is any app that is preventing your phone to go to deep sleep thus draining your battery by keeping CPU at a higher rate. If you have a wakelock blocker built in your ROM great, if not you can try wakelock terminator. I haven't tried it as it is a built-in function in Temasek's ROM. Also, i think i shouldn't be even mentioning how much of a battery hog a display is. Keep your brightness as low as possible, turn Wi-Fi on when you need it as well as data connection, GPS and NFC. I only turn those on when needed.
There's also well known myth about clearing Recent's from RAM. Don't do that. Re-loading apps from storage to RAM over and over again is time & electricity (battery) consuming. Keep those apps in RAM, Android does hell of a good job managing it. It's not like Windows environment (or any OS for devices with unlimited electrical supply - not battery driven). Good cellphone reception is also worth mentioning. Avoid areas with low reception as phone tends to constantly search for new cell towers with better receptions - huge battery hog.
The second one is a kernel tweaker. There are plenty out there. I use this one (a good purchase, one of the best i've done) as it has a ton of options. I think the best way of sharing my settings is via Screen Shots. They are attached below.
Sure there are plenty of options to tailor to your needs. Choosing a suitable governor for your needs is essential, however there are some settings i (and many others) would advise you to stick to.
CPU Hotplug intelliplug (instead of stock MPDecison)
Intellithermal Thermall manager (instead of stock one) + lowering Temperature as seen in SS below
Battery Throtling with values seen in SS below
Here is where you can limit your battery to reach higher temperatures than healthy level. If your battery gets too hot while charging (or use) you should unplug the charger (or discontinue heavy task). Not only for the sake of battery but phone overall...
There are other apps that prolong (or at least say that they do) like Greenefy (probably the most efficient one, and loved one by most users), battery saver and others..... I do not use those.
Edit:
3. "CALIBRATING" BATTERY
I put that in quotation marks as it is not (at least i haven't found) scientifically confirmed. However, from time to time i tend to preform this treatment... As stated before, fully charging&discharging is not the top-best treatment for batteries. It lasts longer in a short term but shortens it's healthy life in long term. But from time to time i do put my battery to this stressful cycle. It could be a placebo effect not really helping at all... Even more, as stated above, fully charging and discharging is not advised because it puts battery through a lot of stress!
Drain the battery complitely flat (phone shuts itself down)
Put your AC cord in and let it charge for arround 3 hours while phone is OFF
Unplug and turn your phone ON
Let it rest for some half an hours (don't use it, you don't want to put too much stress to battery))
Put AC kable back in and charge it for another 30 minutes or so
"Super-charging" your phone like that ought to calibrate your battery. This shouldn't be done on a regular basis as you put your battery level to extreme thus stressing it.... As said, it is unconfirmed method but i tend to do it from time to time (once every 2 months).
Again, this is something that has not been tested. It might be a placebo or smth. However, here is the source: http://forums.androidcentral.com/htc-one-s/174458-how-calibrate-battery.html
This method is for nickel cadmium batteries who suffer memory effect. Thanks to reddit user r/Saicotic for informing about my misinformation.
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This is it. This is what i've learned about batteries and how i do it. It is by no means a perfect set-up! Please let me know if you know about a better set-up (kernel tweaks), any good app or any other info on how to extend battery life.... Please let me (us) know.
SS:
Main source of info: http://batteryuniversity.com/
Screen shots in a .rar file if you can't open those...
Thanks for this, but I can't make out pics on mobile?
Sent from my SM-N900W8 using XDA Free mobile app
tkjeeper said:
Thanks for this, but I can't make out pics on mobile?
Sent from my SM-N900W8 using XDA Free mobile app
Click to expand...
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You can't see them? Do you see at least thumbnail?
I've added a .rar file to download...
I see them, but too blurry to make out info
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Sent from my SM-N900W8 using XDA Free mobile app
tkjeeper said:
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Weird, i can see them just fine on my phone, as well does my friend. Well, i've attached HQ photos in a form of rar file.
tkjeeper said:
I see them, but too blurry to make out info
Sent from my SM-N900W8 using XDA Free mobile app
Click to expand...
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Click on the image and you got 2 options. 1st is view in gallery
2nd is follow the link.
Choose 2nd one and image will be opened in the browser. It is so clear and original images that were uploaded.
satslu said:
Click on the image and you got 2 options. 1st is view in gallery
2nd is follow the link.
Choose 2nd one and image will be opened in the browser. It is so clear and original images that were uploaded.
Click to expand...
Click to collapse
No, I don't get 2 options, they open like the pic I posted, but ty
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ryanrazer said:
Also, fast-charging is not the best way of charging. Pushing higher voltage is also more stressful for the battery and chemical reactions within, than charging it with lower voltage. Yes, "fast-charge" with higher voltage will speed up the Stage 1 of a charge and reach 70% of a charge quicker, but Stage 2 - saturation charge will take longer. If you are in a hurry and need some juice, that's good and comes in handy. New devices like Note4, Nexus6 and others promote fast-charge and brag how fast can you charge your phone to 70% (like just in 35 minutes you'll reach 70%). You might notice that in-fact phone says 70% when you unplug your phone from the charger, but battery will probably also drop faster than normal. That is because Stage 1 was complete in a very short time, but Stage 2 (saturation charge) never kicked in.
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Actually, this point is currently in contention among material scientists.
I think most li-ion cells in mobile devices are probably geared toward 1.2A or higher. Charging via USB at 0.5A is probably detrimental in the way Chueh et al describe. I agree fast-charging to top-off battery is probably suboptimal due to heat generation, but I'm current students indicate fast-charging at reasonable temperatures is better than slow-charging in general. Slow-charging does yield greater charge saturation, which is the most likely contributor to lithium salt precipitation.
Fast charging at 2.4A probably isn't too bad, as long as you keep temperatures reasonable. The only reason you shouldn't top off at 2.4A is because your battery will saturate but will continue charging due to voltage delay. Thus, heat is generated as a direct result of excess charge (inherent to li-ion). However, modern fast-charging adapters and devices will reduce current when the battery nears full saturation. It's possible that devices using hacked fast-charging don't realize attenuation and thus unexpectedly shorten battery lifespan.
I use Amplify (xposed module) which I can recommend.
http://forum.xda-developers.com/xposed/modules/mod-nlpunbounce-reduce-nlp-wakelocks-t2853874
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What does this mean. Did the phone crash
Sent from my LG-D802 using XDA Free mobile app
there is no 2 option for me
Mo.
Sm-n900
samrox144 said:
What does this mean. Did the phone crash
Sent from my LG-D802 using XDA Free mobile app
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Phone had a restart, if you did not do anything on your own.
Related
Hi guys, have 10 mins so decided to write up little explanation about batteries.
Main purpose of this thread is not "how to look after li-ion battery so it stays alive forever" but rather how to get best day to day performance without killing battery prematurely (before contract expires lol)
First of all, there is no such thing as battery conditioning or calibration with Li-Ion. When people say that, they refer to BATTERY STATS (software side) knowingly or unknowingly.
Second. Battery stats. Forget about clearing them every time you flash A ROM. ONLY do it if something is seriously wrong with battery reporting, you'll "feel" exactly when it's happening. Poor battery life is not caused just by bad stats normally, erratic and weird percentage reporting is. If you wipe stats every time you flash new ROM, it will take few full cycles to rebuild them during which you will experience poor battery life and blame the ROM obviously.
Third. Try to stick to FULL cycles as much as you can, 100%-0%-100%-0%. This helps to keep battery stats healthy.
Fourth. Discharging battery to 0% is NOT BAD! I repeat, it's not bad. That is until you start trying to discharge it completely by trying to start up the phone, or do not charge immediately (or within reasonable amount of time). Batteries are smart nowadays, and they shut down when they still have some charge left (surprise, surprise) so they don't get damaged.
This ^^^ works for any smartphone really, but keeping to full cycles help our Sensations especially, as it helps with touchscreen problems (see my or zmfl's threads).
All of the above are my findings, experimenting, searching net or discussing with other smartphone users, I have no hard data to prove it. So either believe it or don't, it's up to you. I know quite a few people who agree with the above.
If you find this useful i'd recommend making it sticky.
Any further questions will be answered to my best knowledge, and if i don't know something i'm sure fellow members will join in. I'll add more Q/A's to OP as they come.
Part 2
Bump charging.
Hmm, tough one. An odd battery will benefit from it, but most batteries wont. Bump charging will eventually damage battery and you'll be worse off in the end. Not recommended.
Battery percentage jumps up and down after reboot (Sensation specific)
Has been discussed A LOT here. There are plenty of explanations why it happens, I'm not sure if any of them correct, but the main thing is, just disregard it as it will catch up with correct % pretty soon by depleting faster/slower.
This is the best thread for battery IMO.
Thanks
likuku said:
This is the best thread for battery IMO.
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Sent from my HTC Sensation Z710e using XDA App
Thank you! Finally, a post on battery life that is actually factual.
Still not sure about the whole "Full discharge/charge" cycles, since Li-ions prefer partial charge, but regardless. Nice one
Sent from my HTC Sensation XE with Beats Audio Z715e using XDA App
282 views and 5 votes? Seriously?
As a electrical engineer I have to disagree with some of the statements.
From what I studied it's best practice to keep your Li-Ion fully charged. Keeping your battery discharged for a long time may decrease your battery lifetime. Yes, there are safeguards, but still it isn't healthy for the battery. It's not like going under a magical barrier of 3500mV causes dmg to the battery and 3501mV causes no dmg at all. It's bull****.
How to maximize your battery life?
Do not charge your battery when you're running high demanding tasks.
Do not softreset your phone when you're charging.
Do not discharge your battery when it's not needed.
Keep your battery dry.
Do not expose your battery to temperatures above 50C or below 0C.
Cool. Very good info, will add to OP if you don't mind.
Regarding discharge, I did say that if phone dies you should charge it immediately I do not recommend "killing" it, ie trying to start phone when its dead repeatedly.
It is indeed good to keep Li-Ion topped up at all times, bit disadvantage of that is messed up battery stats, which will cause incorrect readings and premature shut down- hence bad battery life.
Jackos said:
As a electrical engineer I have to disagree with some of the statements.
From what I studied it's best practice to keep your Li-Ion fully charged. Keeping your battery discharged for a long time may decrease your battery lifetime. Yes, there are safeguards, but still it isn't healthy for the battery. It's not like going under a magical barrier of 3500mV causes dmg to the battery and 3501mV causes no dmg at all. It's bull****.
How to maximize your battery life?
Do not charge your battery when you're running high demanding tasks.
Do not softreset your phone when you're charging.
Do not discharge your battery when it's not needed.
Keep your battery dry.
Do not expose your battery to temperatures above 50C or below 0C.
Click to expand...
Click to collapse
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Jepp, doing 100%-0%-100%-0% cycles will result in best battery "calibration", but that's just software based as you mentioned. This would be excellent for older battery types.
And very good for Android battery stats. Basically, what I posted is explanation how to keep battery stats healthy while not damaging battery. From battery point of view, yes just keep it topped up to preserve it the longest. From Stats point of view, drain,charge,drain,charge is the best thing. Both are not good for each other. But, I'd rather have healthy stats for best performance in day to day use if I had to make a choice, since Anker is only 12gbp, and if I kill one, I'll just get a new one.
OP is basically how to keep Stats/Battery balanced without affecting each other too much.
Just remember disclaimer, all of the info is what I found by reading and from personal experience. You don't have to take it for granted.
Jackos said:
Jepp, doing 100%-0%-100%-0% cycles will result in best battery "calibration", but that's just software based as you mentioned. This would be excellent for older battery types.
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Sent from my HTC Sensation Z710e using XDA App
Nice FAQ, mate. Helpful infos imo.
Sensation Xe battery with 2 days use
i have rom ARHD 3.6.7, bricked kernel 1.5 and my battery last 2days with moderate use
i only wip battery stat once when flash new rom.
The best charging strategy (for a long battery life, in terms of persistance) for a vehicle with a range extender (e.g. used in Stuttgart in some of the Mercedes buses) is keeping the charge between 40 - 60%. Higher and lower will shorten the life of the battery more. Since these vehicles use LiIon batteries, I think it should be the same for smartphone batteries.
Sibbi said:
The best charging strategy (for a long battery life, in terms of persistance) for a vehicle with a range extender (e.g. used in Stuttgart in some of the Mercedes buses) is keeping the charge between 40 - 60%. Higher and lower will shorten the life of the battery more. Since these vehicles use LiIon batteries, I think it should be the same for smartphone batteries.
Click to expand...
Click to collapse
Not exactly. Technology is fair bit different there afaik. Also, them batteries cost thousands, Anker costs a tenner.
Purpose of this thread is not how to preserve battery longest, but how to get best performance day to day use without killing battery too soon.
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tinky1 said:
Not exactly. Technology is fair bit different there afaik. Also, them batteries cost thousands, Anker costs a tenner.
Purpose of this thread is not how to preserve battery longest, but how to get best performance day to day use without killing battery too soon.
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Click to collapse
Cool as you know my topic was closed most of issues have been solved although battery life remain in progress. If you don't mind I will be happy to post my results from anker here in compare to stockresults as I have plenty screens to compare and both batteries have been use on exactly same setup with same use.
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Yeah, carry on. Just specify wherever you followed advice from the OP or not.
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tinky1 said:
Yeah, carry on. Just specify wherever you followed advice from the OP or not.
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Click to collapse
Mostly. My topic was reopened so I will keep on posting there on regular bases however after week or two when I will finish testing will post my final results and comparison here as well. My topic is already messy so it will be kind of blog on testing battery life and because this one is clear and nice I will just upload screens with final results.
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Good lad. I like your style, seems very sensible
leyus said:
Mostly. My topic was reopened so I will keep on posting there on regular bases however after week or two when I will finish testing will post my final results and comparison here as well. My topic is already messy so it will be kind of blog on testing battery life and because this one is clear and nice I will just upload screens with final results.
Sent from my Sensation using XDA App
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Similar to a mechanical device that wears out faster with heavy use, so also does the depth of discharge (DoD) determine the cycle count. The smaller the depth of discharge, the longer the battery will last. If at all possible, avoid frequent full discharges and charge more often between uses. If full discharges cannot be avoided, try utilizing a larger battery. Partial discharge on Li-ion is fine; there is no memory and the battery does not need periodic full discharge cycles other than to calibrate the fuel gauge on a smart battery.
Source:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Comments:
Yes I will still do my 5 full charge, discharge cycles to calibrate stats nicely but then I will try to replace my batteries before they are gone, reading that convinced me that there is no point on doing this to often, at the end of the day, how big can be impact of software stats on battery life? With this article you can clearly see that way you charge it does have massive impact. I'm not arguing that proper calibration etc. does not have it but still don't think it is that much as this article reviled.
Thanks!
Bad battery stats might simply shut down your phone before it should (say you might still have 20% left but phone thinks battery is empty).
Again, I'll repeat myself, I'll sacrifice £12 battery for the sake of having phone running longer any time, but main purpose of this thread is how to get most out of battery without sacrificing It's longevity too much too soon.
Let's not go down the route where people argue about how to preserve battery from dying for 10 years, its not the point.
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Dianne Hackborn - 6:42 PM - Public Today's myth debunking:
"The battery indicator in the status/notification bar is a reflection of the batterystats.bin file in the data/system/directory."
No, it does not.
This file is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the "Battery Use" UI in settings.
That is, it has deeply significant things like "app X held a wake lock for 2 minutes" and "the screen was on at 60% brightness for 10 minutes."
It has no impact on the current battery level shown to you.
It has no impact on your battery life.
Deleting it is not going to do anything to make your more device more fantastic and wonderful... well, unless you have some deep hatred for seeing anything shown in the battery usage UI. And anyway, it is reset every time you unplug from power with a relatively full charge (thus why the battery usage UI data resets at that point), so this would be a much easier way to make it for away.
Source:
https://plus.google.com/u/0/105051985738280261832/posts/FV3LVtdVxPT
Finally.
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nice find. guess the perceived improvement in battery accuracy/life is all placebo
mrmako777 said:
nice find. guess the perceived improvement in battery accuracy/life is all placebo
Click to expand...
Click to collapse
Yes, like so many other things...
mrmako777 said:
nice find. guess the perceived improvement in battery accuracy/life is all placebo
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Click to collapse
Is that what wipe battery stats does? I have never noticed any difference when I did that. To think of all the times I have run the battery down, cleared the stats, charged it, and cleared the stats again with no noticeable results.
Sometimes it seems like the battery life gets thrown off by flashing a new rom. It isn't necessarily getting worse battery life but the indicator will work funny like it will show 99% for 3 hours and I will think I am getting great battery life and then go to 30 in the next 20 minutes. It is like the UI gets confused. My tablet will sometimes say "connect your charger" even though the battery and indicator are 100%.
I don't think people realize how much drain the display is on the battery. They flash a cool rom and use it a lot and then think they are getting bad battery life because the display has been on for two hours while they play with it. It is amazing the amount of difference I get between when I am fidgeting with my phone while I am at work (have to recharge during the day) and when I am at home on the weekend and it sits on the kitchen table most of the time (it will generally go all weekend without a charge).
Wonder why its even an option to wipe battery stats with apps or recovery if it doesnt do anything. I never saw a difference myself, I just wiped them periodically cause others seemed to think it made a difference.
Always worked for me. Been flashing since g1 days. whatever
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jayb222 said:
Always worked for me. Been flashing since g1 days. whatever
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Ya well she helped make the original rom for your g1 so she must be wrong. The thickness of some peoples head
Sent from my Galaxy Nexus
mark manning said:
Ya well she helped make the original rom for your g1 so she must be wrong. The thickness of some peoples head
Sent from my Galaxy Nexus
Click to expand...
Click to collapse
+1 lol
Sent from my HTC Glacier using xda premium
First of all those of us who actually knows about Android OS really knows that /data/system/batterystats.bin is nothing more than stats audit. Now if you think you can't actually re-calibrate battery and project that data than your a fool. It has nothing to do with that file.
First of all to accurately predicate it you need a true daemon that's capable of tracking system data with full autonomy access. Second you need correct battery specs from the manufacturer. As reading memory from it may or not even be supported by the device kernel if its not allocated. Thus you see issues with cross link batteries on stock roms, but some is exceptional with similar size, specs.
Now to project the correct data from ~1-100% you need to fully discharge for it to cycle. Yes I know some of you maybe saying never fully discharge Li-Io but if you know the min mV rating then you can stop near suggested mV as it won't go below and damage cells. From then the duration of full charge is defined along with total available mAh. By calculating discharged -mA draw pre scale unit over empty estimation you can predict the true battery percentage.
Ex: ATM my uptime is 14h 47m at 65% with moderate usage (talk, txt, web). Since I have MP1650mAh battery I'm currently at 1072mAh. As its drawing -90mA per scale unit with 4156mV. At this current rate fully projected empty estimation is 9h 38m. Keep in mind my deviceis highly optimized and is on very aggressive battery saving mode.
Sent from my HTC Glacier
HTC Glacier said:
First of all those of us who actually knows about Android OS really knows that /data/system/batterystats.bin is nothing more than stats audit. Now if you think you can't actually re-calibrate battery and project that data than your a fool. It has nothing to do with that file.
First of all to accurately predicate it you need a true daemon that's capable of tracking system data with full autonomy access. Second you need correct battery specs from the manufacturer. As reading memory from it may or not even be supported by the device kernel if its not allocated. Thus you see issues with cross link batteries on stock roms, but some is exceptional with similar size, specs.
Now to project the correct data from ~1-100% you need to fully discharge for it to cycle. Yes I know some of you maybe saying never fully discharge Li-Io but if you know the min mV rating then you can stop near suggested mV as it won't go below and damage cells. From then the duration of full charge is defined along with total available mAh. By calculating discharged -mA draw pre scale unit over empty estimation you can predict the true battery percentage.
Ex: ATM my uptime is 14h 47m at 65% with moderate usage (talk, txt, web). Since I have MP1650mAh battery I'm currently at 1072mAh. As its drawing -90mA per scale unit with 4156mV. At this current rate fully projected empty estimation is 9h 38m. Keep in mind my deviceis highly optimized and is on very aggressive battery saving mode.
Sent from my HTC Glacier
Click to expand...
Click to collapse
http://batteryuniversity.com/learn/article/how_to_prime_batteries
The truth is out there
Sent from my Galaxy Nexus
mark manning said:
http://batteryuniversity.com/learn/article/how_to_prime_batteries
The truth is out there
Sent from my Galaxy Nexus
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And that is why you don't allow fools to use Google. Do you actually understand or comprehend what was said? Let me ask you this why do you think they "wipe batterystats"? What's the reason for it? lol he thinks you can't predict actual mV/mAh of battery based on mA draw lol now that isfunny. The whole reason of having any UI battery metter was based on what logic? Next time you Google.com something make sure you actually comprehend what was the logic behind it. Hey all THE truth is out there...
Sent from my HTC Glacier
HTC Glacier said:
And that is why you don't allow fools to use Google. Do you actually understand or comprehend what was said? Let me ask you this why do you think they "wipe batterystats"? What's the reason for it? lol he thinks you can't predict actual mV/mAh of battery based on mA draw lol now that isfunny. The whole reason of having any UI battery metter was based on what logic? Next time you Google.com something make sure you actually comprehend what was the logic behind it. Hey all THE truth is out there...
Sent from my HTC Glacier
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The sad part was I was backing up on what you said. Calm down read it in lame mans terms before you trip.
Sent from my Galaxy Nexus
Man, its getting hot in here. Lol.
Ok, so, if wiping battery stats is useless because it does NOTHING to the battery, is there a way to address the battery and force it to allow a slight overcharge on a regular basis, thereby shutting charging off at a higher capacity?
Please forgive my ignorance gentleman, and refrain from verbally bashing me.
I bought a 1550 mAh Anker battery. If I charge it to 100% and then use it, it stays at 100% for hours. Is this because my phone is waiting for it to drop below 1400 mAh, or what? If that's the case can I somehow tell my phone to consider 1550 mAh 100%?
I ask because of the mugen power app on the market. It intrigued me. Though there is a chance its a bunch.of balogna.
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mark manning said:
The sad part was I was backing up on what you said. Calm down read it in lame mans terms before you trip.
Sent from my Galaxy Nexus
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Click to collapse
sorry I knew that was another possibility, my mistake. I thought the link you posted some how undermines what I said as you quoted me. As I only posted how to accurately predict and report battery data. Also I think you know who I am...
estallings15 said:
Man, its getting hot in here. Lol.
Ok, so, if wiping battery stats is useless because it does NOTHING to the battery, is there a way to address the battery and force it to allow a slight overcharge on a regular basis, thereby shutting charging off at a higher capacity?
Please forgive my ignorance gentleman, and refrain from verbally bashing me.
I bought a 1550 mAh Anker battery. If I charge it to 100% and then use it, it stays at 100% for hours. Is this because my phone is waiting for it to drop below 1400 mAh, or what? If that's the case can I somehow tell my phone to consider 1550 mAh 100%?
I ask because of the mugen power app on the market. It intrigued me. Though there is a chance its a bunch.of balogna.
Sent from my HTC Glacier using XDA App
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That is THE prime reason people "wipe batterystats.bin" thinking it would fix staying for hours at 100% delay and heavy drop in short time. Which is sign of missing true data. Normally its measured via min/max mV and available mAh. Now by subtracting the used mA per scale unit the empty estimation is calculated. Thus projecting power draw at given duration and near accurate battery metter.
Sent from my HTC Glacier
HTC Glacier said:
sorry I knew that was another possibility, my mistake. I thought the link you posted some how undermines what I said as you quoted me. As I only posted how to accurately predict and report battery data. Also I think you know who I am...
That is THE prime reason people "wipe batterystats.bin" thinking it would fix staying for hours at 100% delay and heavy drop in short time. Which is sign of missing true data. Normally its measured via min/max mV and available mAh. Now by subtracting the used mA per scale unit the empty estimation is calculated. Thus projecting power draw at given duration and near accurate battery metter.
Sent from my HTC Glacier
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kinda wondered if that was you, didnt have your typical avatar tho
Sent from my Galaxy Nexus
So with this being said then you don't have to worry about your battery percentage between flashing roms?
The battery life should be still accurate?
I have a 1700mah
Sent from my HTC Glacier using xda premium
HTC Glacier said:
That is THE prime reason people "wipe batterystats.bin" thinking it would fix staying for hours at 100% delay and heavy drop in short time. Which is sign of missing true data. Normally its measured via min/max mV and available mAh. Now by subtracting the used mA per scale unit the empty estimation is calculated. Thus projecting power draw at given duration and near accurate battery metter.
Sent from my HTC Glacier
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Click to collapse
Yes, of course it is the prime reason. My question was, is there a way to tell the phone that 1550 is 100% or do I just deal with inaccurate monitoring that is based on a 1400 mAh battery?
Or, alternatively, will android figure it out over time and adjust for me?
Sent from my HTC Glacier using XDA App
answer me this: why in miui does the hardware led light up green when miui tells me im only at 90%? when i check the mv with the battery calibration app it tells me im at 4220 which is a full charge...what makes miui not see that the battery is full?
Before battery calibration, regardless of what happens, I was getting 9 hours, light usage. After battery calibration I get 19 hours, medium use. I'll stick with it with my thick headed self.
Sent from my HTC Glacier using xda premium
Sent from my Nexus 5 using XDA Free mobile app
In short: I think your battery is fine.
In long: Batteries are incredibly complex units, with slight allowable tolerances on the actual total mAh charge the battery can hold. I don't know the tolerances these batteries are built to, but they are not exactly 2300 mAh. I don't use the app you took a screen-shot of and the numbers aren't explained, so they mean nothing to me. I have no idea what they are trying to tell me, though I could make some assumptions that are probably wrong to some extent.
Also, an important thing to remember about lithium batteries is they do not tolerate a full discharge. This will damage the battery (irreparably). OEM's implement a floor at somewhere around 5-10% battery charge to prevent the consumer from either accidentally or intentionally fully discharging the battery. This is why the device will boot up on a low battery (after low battery shutdown). But it will immediately initiate shutdown again to prevent battery damage (or at least limit it). There is a great thread about lithium batteries in phones here: http://forum.xda-developers.com/showthread.php?t=1168036. The point I'm making here is that app will never show a complete 2300 mAh of battery usage because the batteries circuitry will not allow it. So, if I understand that apps numbers correctly your battery capacity is probably ok.
Keep in mind this post was by a 3rd party and not a battery engineer, but most of the advice is pretty sound (I'm not a battery engineer either, but I am a Mechanical Engineer and most of his comments pass a sanity check).
Thanks for the long reply. I'm puzzled by this really because my SOT is barely 2.5 hours on a good day. I currently lack a SIM (waiting on one) and I have been just using airplane mode with WiFi on. My drain with screen off is somewhere around 2%. I am running M rooted with elementalx and I have a -50mv under clock across the board. I'm also using the conservative governor at the moment. I have greenified everything except Facebook and my last power cycle only showed the screen, system and WiFi as the only things consuming battery. My screen brightness is cranked way down. On battery I can pretty much see it dropping at a rate of 30%/hr with the screen on. If I under clock to 1.2ghz I get closer to 20%/hr. Currently I can't even get through a 16 hour day with light usage. I'm reading consistent reports of 4-5 hour SOTs with some power conservation and frankly I don't know what more I could do other than under clock to 500mhz which I must say us pretty laggy. Yeah I know draining to 0 is bad, but it looks like I don't have much choice right now or I could just leave it on charge all day. Awesome. I think I should try swapping the battery. My current problem is finding a good source for a genuine oem battery.
Sent from my Nexus 5 using XDA Free mobile app
I think this is the worst battery life I've ever had from a phone. I'm pretty sure my G1 was nowhere near this bad but I do remember eventually moving to an extended battery.
Sent from my Nexus 5 using XDA Free mobile app
Is fast charging on the S7 ok for the battery or it damages it by time ? I mean i want my phone to hold on for at least 3 years.
Should i disable this option to increase the total battery health ?
With or without fast charging...batterys dont last 3 years.
Sent from my SM-G930F using XDA-Developers mobile app
olafsand said:
With or without fast charging...batterys dont last 3 years.
Sent from my SM-G930F using XDA-Developers mobile app
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Umm yes they do... They last way longer than that actually. They just won't have the capability to hold the full charge amount (in mAh) anymore.
InsanePostman said:
Umm yes they do... They last way longer than that actually. They just won't have the capability to hold the full charge amount (in mAh) anymore.
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Click to collapse
It may not have dawned on you yet but that battery does not "hold the full charge amount (in mAh) anymore" is in most users mind the very definition of "my f****** battery is gone"!
With the all the pressure on the manufacturers to make the batteries small and the urge to build faster units the usable battery lifespan takes a hit. Even a 20% shorter battery charge time feels frustrating when heavy users may already struggle to make it last a full day with some phones.
So, "way longer than that" (3 years)…? I don’t think so!
So as a conclusion should I DISABLE FAST CHARGING OR NOT?
RootNightmareX said:
So as a conclusion should I DISABLE FAST CHARGING OR NOT?
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I have never heard anyone being able to prove fast charging causing shortened battery life. There are a lot of guessing around, but the only difference I have seen is that the phone gets slightly warmer to the touch both after fast charging with cable and wireless. Not so hot so that I would suspect damage. After all, since the charging ends a lot faster the total amount of heat surely isn't higher than that with slow charging. Using the phone will sometimes make it warmer than this.
One could perhaps suspect a higher risk for fire with fast charging, but there is no proof for that either.
The choice is yours!
RootNightmareX said:
So as a conclusion should I DISABLE FAST CHARGING OR NOT?
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Click to collapse
If you want battery to last longer you do not need to disable anything, instead follow these steps
1. Charge battery to 80 - 85% and not 100%. Stop leaving it overnight.
2. Don't let it fall to 0%, keep it between 20 - 80% charge.
3. Do use phone while charging. You do not want battery heating up.
4. Top up the battery in between your day but keep it within the range above.
5. Keep phone away from to much subglight or warm temperatures. Heat is the biggest enemy of Li-on batteries.
Sent from my SM-G930F using Tapatalk
takerhbk said:
If you want battery to last longer you do not need to disable anything, instead follow these steps
1. Charge battery to 80 - 85% and not 100%. Stop leaving it overnight.
2. Don't let it fall to 0%, keep it between 20 - 80% charge.
3. Do use phone while charging. You do not want battery heating up.
4. Top up the battery in between your day but keep it within the range above.
5. Keep phone away from to much subglight or warm temperatures. Heat is the biggest enemy of Li-on batteries.
Sent from my SM-G930F using Tapatalk
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Click to collapse
This might have been true many years ago for on old generation of batteries and phones, not for the batteries and smart phones of today. You cannot damage the battery by over charge, there is automatic over charge protection.
You equally cannot do harm to the battery by using it all the way down. There is protection against this also. The system will sense when it is approaching the level that will do any damage at all to the battery and shut down.
No need to worry, just use your phone. There is nothing you can do to make the battery better or worse!
gerhard_wa said:
This might have been true many years ago for on old generation of batteries and phones, not for the batteries and smart phones of today. You cannot damage the battery by over charge, there is automatic over charge protection.
You equally cannot do harm to the battery by using it all the way down. There is protection against this also. The system will sense when it is approaching the level that will do any damage at all to the battery and shut down.
No need to worry, just use your phone. There is nothing you can do to make the battery better or worse!
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Click to collapse
So i can enable fast charge and full charge/discharge the phone without any risk?
gerhard_wa said:
This might have been true many years ago for on old generation of batteries and phones, not for the batteries and smart phones of today. You cannot damage the battery by over charge, there is automatic over charge protection.
You equally cannot do harm to the battery by using it all the way down. There is protection against this also. The system will sense when it is approaching the level that will do any damage at all to the battery and shut down.
No need to worry, just use your phone. There is nothing you can do to make the battery better or worse!
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Click to collapse
No you are getting it wrong. Don't leave overnight not because it over charges but the fact that you don't want to go upto 100%. Plus everytime you go to 0 battery loses it one cycle. Whatever I say is based on Google research and latest research so it still holds true. For battery longevity never take it to extreme and avoid heating it.
RootNightmareX said:
So i can enable fast charge and full charge/discharge the phone without any risk?
Click to expand...
Click to collapse
You should Google or see YouTube videos. What I advise you is based on that research. Almost 99% people advise what I said. Rest is upto you.
Sent from my SM-G930F using Tapatalk
takerhbk said:
No you are getting it wrong. Don't leave overnight not because it over charges but the fact that you don't want to go upto 100%. Plus everytime you go to 0 battery loses it one cycle. Whatever I say is based on Google research and latest research so it still holds true. For battery longevity never take it to extreme and avoid heating it.
You should Google or see YouTube videos. What I advise you is based on that research. Almost 99% people advise what I said. Rest is upto you.
Sent from my SM-G930F using Tapatalk
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Click to collapse
So the most recommanded tips are: stay at 25-75% battery and try to not heat battery and disable fast charge?
RootNightmareX said:
So the most recommanded tips are: stay at 25-75% battery and try to not heat battery and disable fast charge?
Click to expand...
Click to collapse
Disable fast charging if it heats up your battery too much. Otherwise no need.
Sent from my SM-G930F using Tapatalk
gerhard_wa said:
It may not have dawned on you yet but that battery does not "hold the full charge amount (in mAh) anymore" is in most users mind the very definition of "my f****** battery is gone"!
With the all the pressure on the manufacturers to make the batteries small and the urge to build faster units the usable battery lifespan takes a hit. Even a 20% shorter battery charge time feels frustrating when heavy users may already struggle to make it last a full day with some phones.
So, "way longer than that" (3 years)…? I don’t think so!
Click to expand...
Click to collapse
That is a generalization based upon nothing but your personal opinion. All I said is that batteries absolutely last longer than 3 years.
Try this app.
https://play.google.com/store/apps/details?id=com.digibites.accubattery&hl=pt_PT
It gives information about charge/discharge and also battery health based on your use.
Hi, lately I've been reading articles on different websites about how to extend the lifespan of the battery, myths and truths about charging the phone and all that and pretty much all coincide in the same points, a couple of points being 1) "don't fully charge your battery" and 2) "heat will affect the life of your battery"; so taking the second point as true then it will make sense not to fully charge the battery in one session, which makes me wonder: if I fully charge my phone in 2 sessions will it be beneficial to battery's lifespan (eg: 1st session charge from 1% to 70% then let the battery cool down and then on 2nd session charge up to 100% ) or it's irrelevant and it still would be considered as a "mistake" as per point number 1?
Hope to be clear on what I'm asking and maybe someone can share their wisdom with us, thank you! :good:
ps: apologies if I posted this in the wrong forum.
erikrh said:
Hi, lately I've been reading articles on different websites about how to extend the lifespan of the battery, myths and truths about charging the phone and all that and pretty much all coincide in the same points, a couple of points being 1) "don't fully charge your battery" and 2) "heat will affect the life of your battery"; so taking the second point as true then it will make sense not to fully charge the battery in one session, which makes me wonder: if I fully charge my phone in 2 sessions will it be beneficial to battery's lifespan (eg: 1st session charge from 1% to 70% then let the battery cool down and then on 2nd session charge up to 100% ) or it's irrelevant and it still would be considered as a "mistake" as per point number 1?
Hope to be clear on what I'm asking and maybe someone can share their wisdom with us, thank you! :good:
ps: apologies if I posted this in the wrong forum.
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Click to collapse
1 and 2 are separate issues.
Sent from my Moto E (4) using Tapatalk
erikrh said:
Hi, lately I've been reading articles on different websites about how to extend the lifespan of the battery, myths and truths about charging the phone and all that and pretty much all coincide in the same points, a couple of points being 1) "don't fully charge your battery" and 2) "heat will affect the life of your battery"; so taking the second point as true then it will make sense not to fully charge the battery in one session, which makes me wonder: if I fully charge my phone in 2 sessions will it be beneficial to battery's lifespan (eg: 1st session charge from 1% to 70% then let the battery cool down and then on 2nd session charge up to 100% ) or it's irrelevant and it still would be considered as a "mistake" as per point number 1?
Hope to be clear on what I'm asking and maybe someone can share their wisdom with us, thank you! :good:
ps: apologies if I posted this in the wrong forum.
Click to expand...
Click to collapse
Actually, android has built-in software/hardware that monitors/manages your charging cycle to prevent overcharging and to prevent heat. The real issue comes in when charging and using the device at the same time due to heat generated by the CPU, GPU and the display in addition to any heat that may be generated while it is also charging. The battery management system cannot regulate this extra heat in order to minimize its effect on charging efficiency and it can't control/reduce the additional heat being generated by the CPU, GPU and display. A hot CPU or moderately high temps for long durations isn't good, that heat will eventually begin to cause a breakdown in battery potential.
Sent from my SM-S767VL using Tapatalk