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Hi!
I'm looking for an application, that quickly kills my battery if it's low, so I can do a full charge to improve battery life.
Something, that I launch, I put my phone on the desk, have a tea meanwhile, and it's drained! Something, that turns on wifi, do some downloading, browsing, video playing, or whatever, and does it automatically without supervision. Does such app exists?
I'll second this, it'd be nice to have an app do this for me and maybe even give us some interesting stats from it?
Sent from my mind using telepathy
why would you want an application to destroy your battery?
Adevem said:
why would you want an application to destroy your battery?
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Apparently if you do a full discharge the battery life will be longer.
Soniboy84 said:
Apparently if you do a full discharge the battery life will be longer.
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not really, you should avoid deep discharges...
Byr0x said:
not really, you should avoid deep discharges...
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+1 If you had been reading around...you would know Lithium Ion batteries are designed to 'maximize' their efficiency within about two weeks of 'top up' charging. Cycle-charging is generally considered a less efficient method of charging. You will need to 'TopUp charge' this means charging as much and as often as possible. If your battery is at 89% for instance and you find yourself near a socket, plug your adapter in and charge it up to 100%. After a few days of doing this you will notice an improvement in the life of your battery when you are not able to charge.
Actually,,,
It is not matter of running your battery down to 0%.
It is ok to run it down till phone does to power on itself.
As you know battery is a single cell Li-Ion @ 3.7v
when it is fully charged it's peak voltage is 4.2v
By the time battery mah is drained down (galaxy s has 1500mah)
battery voltage should be around 3.2~3.4v range. this will depend on condition of the battery.
Battery should never go below 3.2v personally, 3.4v is my cut off.
If your battery voltage goes below 3.2v... it's time for a new battery as this kind of voltage will damage your battery, either it will leak or puff (battery will actually get bloated.
Phone has a voltage cut off so it will not over charge over 4.2v but if it does, it will likely start to smoke and catch fire.
I am sure anyone who is into electric Radio control knows all about these batteries.
Oh btw,,, long time storage voltage should be 3.8v
You'll be asking how do I know what voltage my battery is... I personallly don't know of any apps but GPS Status actually shows the temperature & voltage of your battery.
Soniboy84 said:
I'm looking for an application, that quickly kills my battery if it's low, so I can do a full charge to improve battery life.
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First, take into consideration the comments above regarding deep discharge of your battery...but, to answer your question, there's an app in the market place called 'Battery Refresh' which attempts to drain your battery quicker.
Well if it's all true above than its a good sign, and thanks for the info! I'm not an expert but in the old times I remember batteries had to discharged completely, maybe even if it's just a few times. Now somebody can also tell me why my battery is discharging when it's plugged in the socket with original charger? All I do is using the internet, and has. nimbuzz and a live wallpaper on. :S
You could probably enable the GPS/BT/WIFI ( connected to a router ) and run the interactive mode on Neocore benchmark.. that should enable most of the hardware components on the phone and stress the GPU/CPU.. probably would see a 25% battery drain for every 35-40mins.
I don't know what has changed with the batteries but as far as I know...
it is good to discharge new batteries 3~4 times down until phone does not power on.
Like I have said... it's about the voltage of the battery, not whether battery has any juice left in it or not.
These batteries have a protective circuitry so that it will not charge over 4.2v,
also as for discharge it is usually down to 3v but usually with a charger/discharger units that can control mah/volts/amps. With typical usage from the phone, it'll likely be discharged down to about 3.2`3.4v. Which is very safe.
You can do whatever you feel but I personally do this to every batteries I have for phone and every batteries I use with my radio controled cars.
For my RC cars, I have about 6 batteries ranging from 1cell to 3cell LiPo packs.
Each cell is 3.7volts.
But you don't have to force discharge and hurry the process.
Just use the phone normally and let it run down to nothing... than recharge to full peak.
Than again, choice is yours.
I'm looking for the same kind of applications. It's very useful for recalibrating your battery. Wipe the battery history then do a full cycle.
Sent from my GT-I9000 using XDA App
The old saying in RC Helicopters was that the difference between discharging 50% and 100% was the difference between getting 500 uses and 5 uses.
You should certainly avoid ever fully dischaging any lithium based battery.
Older nickel batteries (Ni-cd, Ni-MH) required full dischage cycles to get rid of memory the the metals pertained, lithium-ion and lithium-ion-polymer not only do not require this; but doing so will damage them.
And yes, the older ipods came with Nimh cells and they did reccomended full discharge cycles.
Im pretty sure the idea was to try not to let the voltage get below 3.5v/cell and never below 3.3. Dead flat is 3 or 2.85 which is when the battery simply cant produce any real current. The phone should have circuitry though to not let the voltage get above 4.25 or below ~3.5.. If the low battery warning comes on, set the brightness to dim, and stop any activities (unless its a phone call, its not THAT important but if youre playing games or watching a movie...) until yo can get to a charger.
By the way this being my first post (i meant to ages ago) Ill just mention that my galaxy S came with recovery mode and download mode Enabled, i got it just last month, Virgin network, Australia.
draining the battery fully was for the older battery types, new age batteries are not recommended to be drained fully
Thanks!
One more question:
I'm using my phone as a desktop replacement, because I don't have Internet at the moment. I'm using xda, dolphin browser and listening music. It's plugged into the mains and it's not charging. It says 49%, and stuck there. Is it possible I'm using too much battery?
Sent from my GT-I9000 using XDA App
Ok, this will be my last reply.
Fully draining or not is not the issue.
In RC, most modern electronic speed controllers have a built-in battery cut-off which will cut off power once it reaches certain voltage. Because OVER-draining battery without cut off can damage/kill/ or make it unable to hold voltage.
Also, once the battery voltage reach certain point (still within safe range) you will notice the motor being powered slow down. This would also be a recommended time to stop.
Cellular phones have built in safe cut off aswell. As I have said I have measured my battery after being full drained, voltage was around 3.55v or so. Which is very normal considering voltage of the battery is 3.7v only with peak charged voltage of 4.2.
Now, Someone mentioned that fully draining your battery repeatedly will dramatically reduce battery life.
Reducing life of the battery has more to do with the amount of AMP used to charge the battery. Faster charging is usually reduce battery life dramatically.
And without hobby grade chargers, you won't be able to control this charge rate.
Slow charge is better but charging at 1C rating is the normal. But charging at 1C means regardless of batteries mah rating, battery can be charged in about 60 minutes. As we all know, our phone batteries doesn't charge from zero to full in 60minutes, right? just like most of the portable devices it takes nearly 3~4hours to fully recharge. Last 20% usually takes longer because Amp provided to charge slowly lowers. That is why.
For example, if Galaxy S battery is 1500mah, than 1C charge rate is @ 1.5amp.
If battery is 3000Mah, 1C is 3.0Amps and so on.
So like I have said over and over before, drain your battery away if you have to by choice or not. Just use it up, I will bet you your battery will last longer than you keep your phone.
U should avoid draining ur battery to 0% (witch is not possible with ur phone. When it shows 0% the charge of the battery is at 10-15%). Li-ion batteries dont have a memory effect, so it would be usless discharching it completely anyhow. Best for sgs battery is charging it before it goes under 50% that will improve the lifetime of ur battery (not how long it lasts before u have to charge but how long it lasts before u have to go and buy a new one)
How do i know? Simply cause i had to learn that a few weeks ago for the job im learning.
@xxgg: yes ur right, it wont really damage the battery if u runn it till thr phone shows its empty. But using an app to drain battery as quick as possible will, since the app forces the battery to give out more Ampere than its built to give out
Sent from my GT-I9000 using Tapatalk
What kind of battery time are you guys getting on the original battery?
I've had my phone for about 14 days now and im not getting more than 12 hours on a charge.. the first week iv'e been using the phone alot.
I have alot of apps installed and im wondering if that could have a impact on the battery.. i have tryed using a task killer and without..
From the battery usage statistics page the screen is definitely the one that uses the most. Voice calls is number 2.
Will all applications show on the battery statistics page or is this something the applications have to implement?
Sent from my HTC Desire Z using XDA App
My battery has gotten better since I got it. But I have been doing a few things to help my battery - e.g. I completely drain the battery (until the phone doesn't even turn on anymore) and then fully charge it overnight.
Read about task killers and Android here: http://forum.xda-developers.com/showthread.php?t=849974
All apps will show in the battery usage statistics. If the screen has been using the most power, that means exactly that - you've been using the phone a lot and as such the screen has been taking up a lot of power.
I would recommend though to try to completely drain and then overnight charge, and repeat that cycle as often as you can.. I'm no technician, but I do think how you charge the phone matters
i've read about the task killers and have decided to uninstall them compleetly and let android do what it wants.
Regarding the charging, i have ran the battery flat out almost every day..
Im going to try a few different charging methods and see if there is some difference..
however i suspect that if the indicator is saying 100% charge, thats exatcly what it is whatever the charging method. (i hope)
It does get better. When I first got the phone I was getting about 14 hours. Now I'm getting about 30 hours or so.
JuiceDefender and setCPU help preserve battery life, too.
I am lucky to even get 12 hours with minimal use. No calls, just some texting and maybe browsing my bank website. Screen is always the killer for me, even on 20% brightness. If I go lower the screen actually flickers.
I bought the red HTC Chichitech batteries and they didn't help me at all.
Tried overclocking module, didn't change much.
The only app that ever shows any significant battery use (over 5%) is Maps, when I use maps.
i always thought completly draining a Lithium-ion battery is a bad idea?
Yes, it is.
Older batteries such as Ni-MH should be completely worked out from full to dead in order to keep them going in the long run. Li-ion doesn't need to be worked out, in fact the more it is worked out the faster it will run through it's lifespan and stop holding a charge.
Now that batteries, phones, and chargers are all smart, it's supposedly good to keep them plugged in as often as you can instead of letting them run dry.
sukie said:
i always thought completly draining a Lithium-ion battery is a bad idea?
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The post (#7) above is correct on this. You should not let the battery dip below 30%, since discharging it too low may prevent it from being able to take a charge. It happens to most of us on accident every once in a while. But you should avoid it if possible.
It is good to run through a couple charge/discharge cycles to calibrate the battery meter. Many people still think this is to "condition" the battery, but battery conditioning is only the case with the older NiCad type of rechargeable batteries. Charging/discharging the battery just helps calibrate the battery meter on the phone. For new phones or a new ROM flash, I usually charge the battery to 100%, then let it drain to 30%, and repeat a couple times.
sukie said:
i always thought completly draining a Lithium-ion battery is a bad idea?
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It's also a bad idea to charge a cold Li battery, but I believe that affects lifespan more than charge. For those of us in colder climes, remember to wait for the battery to warm up to room temp before plugging in.
On my DZ I usually get 15~20h of battery life and it's O/C @ 1.4Ghz
3G & wifi : always on
facebook, gmail, emails, news, weather updates each hour
about 1h per day of audio streaming (deezer, Synology DS audio)
1~2h of internet and games per day (baseball superstars, angry birds, psx4droid...)
less than 30min of calls per day and about 20-30 sms...
sukie said:
i always thought completly draining a Lithium-ion battery is a bad idea?
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It depends what you mean by "completely". If you drain the voltage of a LiIon battery too low, you will damage it. But the circuitry of the phone is normally designed that there's a cut-off before you get to this, i.e. "completely" discharging it by running it till the phone turns off will be before this dangerous level, so should be safe.
It's unnecessary though, your phone can tolerate a *lot* more partial discharges/charges than full discharges/charges. If you drain it ten times from 100% to 90% and charge again, then that's roughly equivalent to one whole discharge/charge from 100% to 0% and back again.
As redpoint73 said, the main issues it "training" Android to get the battery calibration right, not conditioning the battery (which only applies to NiMH, NiCad, etc).
Li-Ion batteries are protected from deep discharges in two ways:
1. The Phone, it will stop you from discharging too low.
2. The battery itself. Each Li-Ion battery contains circuitry that stops it from discharging too low.
Basically both have to fail to have you end up with a dead battery -> rarely happens.
Li-Ions take the heaviest duty when charging the top 90-100% charge, charging just that bit stresses the battery more than from 0-80% (ofc 0 not really being 0 ) Note: This only has an effect on battery LIFE, not battery capacity! -> if you keep charging your battery from 90-100% (for example by keeping it plugged in after driving to work, then recharge after driving home, basically always going from 100-90-100 you're really doing your battery a disservice life-cycle wise)
If Li-Ions are not in use for a while they should be stored at around 60-70% charge.
Now as for batteries in Android devices, I'd estimate that most causes of extreme battery drain are due to rampant programs/too many internet accesses.
Everytime you log onto the internet, or change speeds (3G -> Edge-> whatever) you take a lot more power than usual. Try to ensure that all your programs that regularly access the net, do so together (HTC Sense interface tries to do this)
Rampant Programs: Especially services that need to poll the clock a lot, or keep updating their info, keep their FPS high (games) It is for this reason I try to avoid installing a lot of programs at once, and keep it one at a time (especially for system programs) to see if there's a inordinate change in battery life.
Oh and do turn off unneeded things like bluetooth, wifi, and GPS if you don't need them... but thats a given.
Gee typed more than I was planning, just get tired of seeing these threads all over
Jacina said:
Li-Ions take the heaviest duty when charging the top 90-100% charge, charging just that bit stresses the battery more than from 0-80% (ofc 0 not really being 0 ) Note: This only has an effect on battery LIFE, not battery capacity! -> if you keep charging your battery from 90-100% (for example by keeping it plugged in after driving to work, then recharge after driving home, basically always going from 100-90-100 you're really doing your battery a disservice life-cycle wise)
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Sorry but I disagree with that. Have you got any evidence to back that up ? Continually charging the battery from 90% to 100% should be fine and shouldn't shorten its life at all. Chargers will sometimes reduce their charge when the battery is nearly full, and a slower/lesser charge will actually increase its life (I have no idea whether the DZ's charger does this or not).
Jacina said:
Li-Ion batteries are protected from deep discharges in two ways:
1. The Phone, it will stop you from discharging too low.
2. The battery itself. Each Li-Ion battery contains circuitry that stops it from discharging too low.
Basically both have to fail to have you end up with a dead battery -> rarely happens.
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Coming from the Touch Pro 2 forum, there are somewhat occasional posts by users that discharged their batteries too low, and get stuck in a boot loop. Leaving the battery on the wall charger (USB is not enough) for a long period of time seems to solve the issue in some instances, while others are forced to replace the battery.
As you said, instances of this are relatively rare. I've drained my battery until the phone shuts down plenty of times on accident, with no ill results. But best to play it safe and not do it intentionally.
When you mention the phone prevents the battery from discharging too low, is that the hardware, or the OS? I guess either way, maybe the Desire Z or the Android OS are better at this then Windows Mobile and the Touch Pro 2. But I still wouldn't discharge the battery too low intentionally.
I'm pretty sure on the Touch Pro 2 it was software based (hence actually allowing you to boot before saying "not enough charge" )
I doubt that ANY charger that comes with a phone is anything but a normal "charge till full" charger...
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
All information is gathered there. (other articles there are also highly informative)
nivlheim_o_O? said:
On my DZ I usually get 15~20h of battery life and it's O/C @ 1.4Ghz
3G & wifi : always on
facebook, gmail, emails, news, weather updates each hour
about 1h per day of audio streaming (deezer, Synology DS audio)
1~2h of internet and games per day (baseball superstars, angry birds, psx4droid...)
less than 30min of calls per day and about 20-30 sms...
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That is intense, are you serious?!
I barely make it through the day and I don't game or make many calls. usually just texts and emails.
My update intervals for emails are much more frequent though.
Lucky !
im usually not getting more than 10 hours on a charge... :s thinking about getting the 1800mAh mugen battery...
Sh0rty007 said:
im usually not getting more than 10 hours on a charge... :s thinking about getting the 1800mAh mugen battery...
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Are you using it pretty heavily? I just got the phone Tuesday, and still playing with it a lot, so I can't comment on battery life yet. But what is your screen brightness set to? If you look at the battery use graph, you will see that the display uses the most power, and with any smartphone, the biggest culprit of short battery life. Turn the brightness as low as you can tolerate for your "average" viewing conditions. Also, be sure you've calibrated the battery meter as I've described in Post #8 above.
A word of caution as far as the Mugen extended battaries: one of the users here did a bunch of battary tests on OEM and different aftermarket brands, on various phones. The Mugen 1800 mAh batteries did not rate any better than the OEM 1400 mAh. Mugen tried to explain away the test results. But judge for yourself.
http://forum.xda-developers.com/showthread.php?t=583927
My screen brightness is just 25 or 45%. And i really don't make it to the end of the day.
I now have setcpu, so that when my screen is off my cpu is running on 300mhz. Think i can make it now through the day.
I use my phone a lot, thats true. But only to view the market or twitter things..
Ow and i don't use live wallpapers...
I think there is a lot to be said for keeping things turned off if you do not use/need them too much.
I leave my phone charging overnight (between 11pm and 6:30am). So when I leave the house in the morning it is fully charged.
I keep Wifi and 3G turned off unless I need to use it and I keep brightness to a minimum - again, only increasing it if I need it.
Normal usage for me would be about 1 hours music listening during my commute to work, a couple of texts a day and about 10mins worth of calls a day.
On top of that about 4 hours worth of data use (both Wifi and 3G) and I usually find I still have over 50% battery life left when I plug it back in around 11pm before going to bed (according to the Mini Info widget).
Granted this is fairly light use compared to some people, but I think if you take the time to control your app usage you should see better performance results!
so I got Need for speed for my Xperia S (great game by the way, would recommend) the only problem is it is un UTTER battery drain, I'm talking rapid draining even having the screen brightness on low. Do you think the battery is getting damaged by my heavy use in this way? I'm charging it to full, playing it for a good hour and then it needs to be recharged so I plug it in.
cheers
adsada arc said:
so I got Need for speed for my Xperia S (great game by the way, would recommend) the only problem is it is un UTTER battery drain, I'm talking rapid draining even having the screen brightness on low. Do you think the battery is getting damaged by my heavy use in this way? I'm charging it to full, playing it for a good hour and then it needs to be recharged so I plug it in.
cheers
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No you are not damaging the battery. Hd games drain your battery. Dont worry it happens with every phone. Please post questions in question and answer section.
Sent from my LT26i using xda app-developers app
How about if I play while the phone is charging, does this affect it in any way, like how with a laptop you should take out the battery if its plugged into the wall to extend the battery's life?
adsada arc said:
How about if I play while the phone is charging, does this affect it in any way, like how with a laptop you should take out the battery if its plugged into the wall to extend the battery's life?
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No it wont affect your battery...I have been doing that for the past 10 months
Sent from my LT26i using xda app-developers app
It's a difficult question. From one perspective it's better to keep the phone plugged in because a Li-ion battery has a finite amount of recharging cycles. The worst thing you can do is to completely discharge your battery, then completely charge it again and so on several times. Which is what you've been doing and these are wasted recharge cycles.
But constantly charging your phone will also make it hotter and that combined with an intensive game will make your phone too hot, which might result in some components overheating and a reduced life expectancy.
So I'd advice to keep your phone plugged in if possible, but don't play for hours.
When you compare to laptops, it's indeed better to remove the battery when you're plugged into the wall (keep in mind that the battery doesn't lose its charge though, there's nothing worse for a Li-ion than being completely empty). But there's no phone you can run without a battery so you can't do that . It's also a question of luck. I never remove my laptop's battery and it still easily lasts 2 hours after having it for 2.5 years and using it a LOT (when plugged in mostly). It was just a cheap laptop with a 6 cells battery. Most of my friends that have a laptop that old or older (and also more expensive) can barely keep it charged for more than 10 minutes now.
No,
nowadays you can't damage your battery in any way as I know.
But it is recommended to charge your phone to 100% and turn all notifications off then let it on sleep mode till your Phone is going off by itself.
This doesn't improve the Battery lifetime or something like that but it is recommeded
thanks for the advice everyone
I recently bought a S4 Mini (i9195) and I noticed it has a decent battery life.. until 5%. When the battery reaches 5% I get a huuuge drain.. it's like, draining to 0% in about 1 minute. And it happend all the time. Whats wrong with the device? :crying:
I'll try that, haven't noticed what happens at 5%.
Im shure mine has 3%/hour battery drain over night so I'll spect from 5% at least one hour at idle
Sent from my GT-I9192 using Tapatalk 4
Doesn't happen to me but I've experienced that with my old phones. Always happens when I charge my phone when it's far from empty and unplug it when it's far from full, multiple times.
Like I used to plug it in whenever I could find a power source so that I can play my games throughout the day. And I usually have to leave halfway for other things so I'll unplug it when it isn't fully charged yet.
Then after a while I noticed that the battery was draining quickly when it was at lower percentages but draining slower at higher percentages.
It slowly became more constant as I learnt to charge it when it was completely dead and unplug it only when it was full. (I bought an external battery pack USB charger to help with this)
I think this calls "memory effect" or?
Lithium batteries do not have memory effects anymore.
If the phone is new, try charging it completely and discharge it completely a few times. If it then still persists, the battery is probably not calibrated right.
The real size of a battery is not as stated on the cover 1900, but varies around it, depending on the manufacturing. Similar to CPUs, that get tested and then categorized for certain speeds.
So could be that you have a less optimal battery and therefore the calibration to 1900 as expected by the system is not right. So when you see 5% you are already much lower in reality.
I am new to Android, so I do not know if there are battery calibration tools out there, but I guess so.
Greetings
Christian
Solved my battery drain by updating google maps to latest version
Sent from my GT-I9195 using xda app-developers app
Nope, the system will just shut down at about 5% to prevent a deep discharge of the battery which is really bad for li-poly/li-ion batteries.
I just bought a lenovo p2 after hearing some impressive review pf its battery.But my phone discharged 25% in 4 hours.My 3g connection was on,I played coc,played some music.Is it a battery problem or is it normal?
Your battery will take several cycles to achieve full capacity... let it run down, then slow charge it (NOT with the fast charger supplied) and see how it goes... you should see 2 days of use, although videos and music etc will negate that.
Rooster#1 said:
Your battery will take several cycles to achieve full capacity... let it run down, then slow charge it (NOT with the fast charger supplied) and see how it goes... you should see 2 days of use, although videos and music etc will negate that.
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The only thing I disagree​ is to use a different charger. The supplied charger will automatically switch b/w QC and normal charging (it's not entirely related to the charger either, with processor having some role in it)
Quick charging creates heat in the cells... the worst thing you can do to a battery ! Far better to slow charge, which is more likely to achieve maximum capacity.
Once the battery is "conditioned" then yes - use the fast charger, but the same laws of physics apply... the battery life will be reduced overall, but its a trade off against convenience, and how long you personally plan to keep the phone.
-If you lost 75% of charge in 4 hours that is too much... probably because there was a bad first estimation of the level of charge?
-If you lost 25% battery in 4 hours of intensive use (so you still have 75%) that sounds ok to me.
Also I dont use the fast charger, because battery gets a bit warm if you use it, although that is normal, excesive heat could deteriorate the battery in the long run.
Guys i think the problem is solved.The first 50% charge drains in say 6 hour but the rest 50% lasts like9-10 hours.