Develop Bugs

[Q] Battery drain application

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

Does the official Sprint 2600mAh battery suffer from the "charging bug"

So most people are familiar with the seeming "bug" that if you slap in a huge extended battery (Seido 3600mAh one comes to mind) if you are charging via USB it would only charge up to the 50-60% mark
I'm seriously thinking about getting a sprint extended battery - but does this bigger battery suffer from the same "problem"
I know this one is Lithium Polymoer instead of Li Ion... does that change anything?
All I know is that I refuse to take my battery out every 24 or 36 hours to "wall charge" it directly.
Thanks in advance for you input!
J

Mine has been charging perfectly... have had it two days, and it's been great

thanks for the quick reply -- I'll try and pick one up here in the next few days. I'm sure I can take it back if the huge back or if i had any charging issues
would be nice to go 24 hours and not have to worry about the battery at all

I have loved it... i have been able to actually use my phone.... and i even had them credit me $20 for buying the battery

You could have posted in the thread in this section, just a few posts down. But to answer your question, I have not had any issues yet. I know it drops by 3-4% a little quick (30 minutes - 1 hour) but that is the only major drop I see.

accelerus said:
So most people are familiar with the seeming "bug" that if you slap in a huge extended battery (Seido 3600mAh one comes to mind) if you are charging via USB it would only charge up to the 50-60% mark
I'm seriously thinking about getting a sprint extended battery - but does this bigger battery suffer from the same "problem"
I know this one is Lithium Polymoer instead of Li Ion... does that change anything?
All I know is that I refuse to take my battery out every 24 or 36 hours to "wall charge" it directly.
Thanks in advance for you input!
J
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Li-Po is actually not going to change anything except that you can put more cells in the same size battery, therefore increasing the length between charges.

Most of the LI-Ion batteries used in phones are LI-po now adays anyways. The orignial evo batteries are. and most of the extended batteries are as well.

skydeaner said:
Most of the LI-Ion batteries used in phones are LI-po now adays anyways. The orignial evo batteries are. and most of the extended batteries are as well.
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Actually, they haven't used Li-Ion batteries in most consumer electronics for several years but the name has become a generic descriptor for an entire family of cells which include LiPos.
The complete name for LiPo is lithium-ion polymer and they differ from lithium-ion cells in several ways including:
The electrolyte in a Li-Ion cell is a gel (liquid) while the electrolyte in a LiPo cell is a solid polymer.
The layers in a Li-Ion cell need to be tightly compressed so they're typically rolled and housed in a tight-fitting cylindrical case, but the layers in a LiPo cell don't require that compression which is why they can be manufactured in that handy flat form factor so easily.
The nominal working voltage of Li-Ion cells is 3.6V and it's 3.7V for LiPo cells.
LiPo cells have a higher energy density (capacity/weight) than Li-Ion cells.
LiPo cells can be charged and discharged at significantly higher rates than Li-Ion cells.
The bottom line is any small consumer electronics battery pack which is flat and square and is marked as 3.7V (or a multiple of that number for multi-cell series-wired packs) is a LiPo pack regardless of what it says on the pack or in the literature.
Pete

I have owned both batteries and I'm quite familiar with the bug OP is referring to. I can say unequivocally this battery has the same issues the 3500mah Seidio battery does. If you charge this battery, while the phone is on, to max and then unplug, you will watch your charge drop from full to in the 60s in the first hour or two. The drain then tapers off significantly at that point.
I haven't really had an opportunity to put this one through it's paces yet and it may stabilize over time. I'm thinking that this new one might provide the same amount of battery life as the Seidio 3500mah one due to this bug.
EDIT: See my post on the following page. The battery/system seems to have calibrated itself.

You mean to tell me that this battery was a waste of money for me? If so, let me know. It will go back tomorrow

Strange, I don't have this issue at all and I've had the battery for almost a week. It tends to drain quickly to 95% then level out.
Sent from my HTC Evo 4G using XDA App.

SpezXVII said:
Strange, I don't have this issue at all and I've had the battery for almost a week. It tends to drain quickly to 95% then level out.
Sent from my HTC Evo 4G using XDA App.
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My second charge drained to about 60% just like the first. I just pulled it off the charger for the third time early this morning and I am not noticing the drain anymore. I'm thinking it must have calibrated itself.
I've been off the charger for 1 hour 50 mins and I still have 93% remaining!
This is much more like the stock battery. If it continues to act this way, this battery beats the Seidio one by a mile. It's been a couple months since I've used the EVO. Has something been changed in the CyanogenMod Supersonic kernel to support extended batteries?

Shouldn't it be draining slower than stock battery?

I ahve the Seidio battery and I have never seen the battery drop to 60 percent or anything else like what people are saying. I am on CM 6 RC1 but even with any of the other dozen ROMs I have never had an issue. If my battery dropped to 60 percent a short time after unplugging it I would have sent it back the same day.

I charged my battery from 5% to full last night via usb charge. I pulled it this morning at 7:00 and it dropped to 93% quick mainly because it was on the charger well after it had reached 100%. Since 7 am Its dropped as it should. Im currently at 71% 8 1/2 hours later. So I wouldnt say all of these batteries have the 3500 seidio issue. What rom is everyone whos having the issue running?

They may have fixed something in the kernel recently to avoid this. Look up the old threads about the 3500mah battery. The battery calibration issues were universal.
Sent from my PC36100 using XDA App

looneylu said:
Shouldn't it be draining slower than stock battery?
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The EVO stops charging at 100% and will not charge until it drains back to about 90%. The phone will continue to show "full" until you pull the plug. It will then show the true charge level.
Sent from my PC36100 using XDA App

illogic6 said:
The EVO stops charging at 100% and will not charge until it drains back to about 90%. The phone will continue to show "full" until you pull the plug. It will then show the true charge level.
Sent from my PC36100 using XDA App
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Thanks for clearing that up. I didn't read your previous post, I guess

So do you guys suggest to get this instead of the Seidio ?

Someone take a logcat dump and look at the battery parameters of charging/not charging and you'll know if they've fixed the issue or not.
The meter will self adjust to the 1500Mah based on voltage and you think you'll get a full charge but you won't. Slapping it into an external battery charger after "fully" charging it thru the evo will open your eyes to the issue.
Here's hoping, now there's a sprint official "OEM" class extended battery that they'll get HTC to compile in additional battery drivers other than just the 1500mah one it shipped with.
Sorry folks, if you can't charge it externally, you're not going to get the FULL capability of the battery. There are ways to tricking it into taking more. Charge it fully with phone on, unplug, power it off, charge some more, unplug power on, charge more, etc.
This will continue to add just a little bit more to help bring it up, but you'll never get it full unless you can charge externally or HTC adds devices.
You can pull the source code yourself and confirm this info. You can also confirm the issue still exists with an external charger.

EVO will NOT fully charge a 3500 batt

The EVO, WILL NOT fully charge a 3500 battery without a SBC KERNEL. PERIOD!
Due to the charging algoritm that HTC uses in their Sense kernels, the charger will not stay active long enoigh to charge it 6 hours. Yes, it takes 6 hours to charge a 3500,not 2.5 hours.
If you continue to use any 3500 battery without using SBC, you will kill the battery in short order. Charging a lith ion bettrry to 80% day after day, will drastically reduce run time.
I have tested this and documented it on this site for many months.
Sent from my PC36100 using XDA App

That is true because the evo wasnt made to charge the 3500 batts, but also unless you have the seidio 3500MAH battery most likely the batts arent going to last you long to begin with, because those cheap ebay ones everyone buys well lets just say you get what you pay for!

eggsack said:
The EVO, WILL NOT fully charge a 3500 battery without a SBC KERNEL. PERIOD!
Due to the charging algoritm that HTC uses in their Sense kernels, the charger will not stay active long enoigh to charge it 6 hours. Yes, it takes 6 hours to charge a 3500,not 2.5 hours.
If you continue to use any 3500 battery without using SBC, you will kill the battery in short order. Charging a lith ion bettrry to 80% day after day, will drastically reduce run time.
I have tested this and documented it on this site for many months.
Sent from my PC36100 using XDA App
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Could you please let me know where you are getting your data for this statement? It is patently false and, if you would like, I can provide you with the correct electrical, charging facts based on actual data, not hyperbole.
Thank you
OotR

My Evo charges my seidio 3500MAH battery just fine.
Lasts 10 hours with medium to heavy use.

Dragonfyr said:
My Evo charges my seidio 3500MAH battery just fine.
Lasts 10 hours with medium to heavy use.
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Yes, it will. It would charge a 7000mAH battery if you could stuff it in your phone.
I mean... if you think that the Evo charger has a "timer" on it to only charge for x amount of time.... just read HTC instructions where it tells you to "... charge for at least 8 hours before use...". So much for the timer idea.
The charge is based on putting a set voltage into the battery at a set current. Then, when the voltage is reached and the current drops by a certain percentage, the foldback in the charge controlling chip will lower the charge voltage and the current. Some chargers, in Stage 4 of a charge will "up load" a small charge to "set" the battery based on individual cell properties. That is a way to balance the battery.
At any rate, the Evo charger ( or just about any other charger ), including a USB connection, will charge a 3500mAH battery just fine.
OOOPS.... I meant to add this, from several manufacturers data sheets on Li-ion batteries:
""It is important to note that trickle charging is not acceptable for lithium batteries" But hey.... What do the battery makers know? LOL
See ya'
OotR

OneoftheRabble said:
Yes, it will. It would charge a 7000mAH battery if you could stuff it in your phone.
I mean... if you think that the Evo charger has a "timer" on it to only charge for x amount of time.... just read HTC instructions where it tells you to "... charge for at least 8 hours before use...". So much for the timer idea.
The charge is based on putting a set voltage into the battery at a set current. Then, when the voltage is reached and the current drops by a certain percentage, the foldback in the charge controlling chip will lower the charge voltage and the current. Some chargers, in Stage 4 of a charge will "up load" a small charge to "set" the battery based on individual cell properties. That is a way to balance the battery.
At any rate, the Evo charger ( or just about any other charger ), including a USB connection, will charge a 3500mAH battery just fine.
OOOPS.... I meant to add this, from several manufacturers data sheets on Li-ion batteries:
""It is important to note that trickle charging is not acceptable for lithium batteries" But hey.... What do the battery makers know? LOL
See ya'
OotR
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I thought that post was a little fishy. I am a R/C car guy and lithium batts have been around for a while...uh they really don't have a problem with what is known as memory so even IF the battery charger cuts off after a while...and I'm pretty sure it doesn't, it would still be okay. But whatever, I mean, I could be wrong and stuff. Thanks for the clarification, BTW.
That is the problem with a lot of forums. I appreciate the fact that you substantiated your remarks with citation. Maybe the moderators should require APA guidelines for all users.

how fast can Arc S charge?

how fast can Arc S charge?
how many Voltage recommanded for the charger?
is 1000mA max support, can it be higher like 2000mA?
thank you

All I know is that the default charger is 850mAh, and that already chargers pretty fast. half-full in an hour.

sdk16420 said:
All I know is that the default charger is 850mAh, and that already chargers pretty fast. half-full in an hour.
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do you think it can be faster?

i would say mine charges full in an hour

charge current is programmed in phone's firmware below 1A for AC chargers and below 500mA for USB (don't remember actual values), so even if a 2A charger is used, charge time will not vary.

Mine goes about 1% a minute, I find it good enough for me.

Full charge takes about 1,5h so for me it's not long. But comparing to Xperia S and 0,5h Arc S charge takes ages

When it gets to 90% or maybe even 85%, it slows down its charging, and displays the LED as green, it then continues to charge, this is the economic techniques of the charger, at least that's what I remember from the manual. So it saves energy as most people charge their phone at night, as it gets plugged in for longer periods of time.
This was the first device that introduced me to that concept, the iPhone 3G I had before focused on faster charging. I am unaware of any other products that use green charging methods, however I'm certain other devices will do.
Sent from my LT18i using xda app-developers app

stu15 said:
When it gets to 90% or maybe even 85%, it slows down its charging, and displays the LED as green, it then continues to charge, this is the economic techniques of the charger, at least that's what I remember from the manual. So it saves energy as most people charge their phone at night, as it gets plugged in for longer periods of time.
This was the first device that introduced me to that concept, the iPhone 3G I had before focused on faster charging. I am unaware of any other products that use green charging methods, however I'm certain other devices will do.
Sent from my LT18i using xda app-developers app
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charging a lithium based cell requires a first step using a constant current supply, until voltage reaches 4.2 volt; beyond that point, charging switches to constant voltage, providing the last 10% or so of charge to the cell.
every li-ion charger does so, but someone signals "cell charged" (i.e. green led) when charger actually stops supplying current, others when transitioning from constant-current to constant-voltage mode.
and if that last 10% of charge is not so vital for you, i suggest to disconnect charger as soon as led turns green, because at that high voltage, corrosion of battery's anode is faster and so life of cell and it's capacity is reduced on the long run.
ww w.societyofrobots.com/robotforum/index.php?action=dlattach;topic=13150.0;attach=5296;image
(remove spaces from link, i'm below 10 posts)

_Homer said:
and if that last 10% of charge is not so vital for you, i suggest to disconnect charger as soon as led turns green, because at that high voltage, corrosion of battery's anode is faster and so life of cell and it's capacity is reduced on the long run.
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MYTH NO. 2: Overcharging your lithium ion battery will reduce its battery life
One of the most common myths that we have heard about lithium ion batteries would be the need to plug it from its charger after being fully charged, since overcharging the battery/device will reduce its battery life. The truth is, lithium ion batteries cannot be overcharged or can be reduced of its battery life through overcharging. What’s good about these batteries is that that already have built-in circuits that will cut off the power once it has been fully charged.
However, it is a good idea to unplug or remove the battery once it has done charging because the heat from poor ventilation or from charging will cause it to blow up. Another reason why this is an important note worth remembering is that batteries discharge faster when heated thus, reducing its lifespan.
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http://www.androidauthority.com/the-top-3-android-battery-myths-46924/

Someguyfromhell said:
http://www.androidauthority.com/the-top-3-android-battery-myths-46924/
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that it's true, and is a residual myth from the age of stupid charger that went on charging forever after 100%.
perhaps I was not talking about overcharging, but to terminate charge before the constant-voltage part (at about 90%) if you want to slow down capacity reduction and so prolong battery life.
life of li-ion cell is optimal at 40% charge, but obviously a cell kept at 40% is useless :laugh:, so only thing I can suggest is to avoid reaching full charge if you can.
it's a form of perfectionism, let's call it so

I undervolted my phone, turned off WiFi, sync, brightness and put it on powersaver, charged at 1% a minute which is much faster than its normal charge. Good for me to know, obviously turning the phone off is basically the same
Sent from my LT18i using xda app-developers app

jman2131 said:
i would say mine charges full in an hour
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me too my phone charges full in an hour

agree about full charge with 1 hour

mine is sometimes less than 1 hour with original charger. with PC or non original chargers more than 2 hours. sometimes 3

ash-ta said:
me too my phone charges full in an hour
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the same for me

agrCale this
what about charge from PC?

Charging habits

What is the best charging habit for the oneplus 3?, I mean, whet to charge it (percentage left?) And to what percentage?

5% - 20% i guess
Sent from my ONEPLUS A3003 using Tapatalk

Try to keep the battery level between 25-75% (30 min charge time). Some people also recommend discharging and then fully recharging the battery once a month or so (I personally do not do this).
Sent from my OnePlus3 using XDA Labs

Soumitra.5693 said:
Try to keep the battery level between 25-75% (30 min charge time). Some people also recommend discharging and then fully recharging the battery once a month or so (I personally do not do this).
Sent from my OnePlus3 using XDA Labs
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Yeah I've read lithium batteries prefer to be in that range.

Here's a good summary table. OP3 and most modern phones use a lithium ion battery
http://batteryuniversity.com/learn/article/do_and_dont_battery_table

Fully discharging/recharging (more commonly known as a full cycle) myth come from the nickel-cadium battery. Since then we have the NiMH battery and now we have the lithium battery.
Ni-Cd battery have the memory effect, when recharging repeatedly not fully discharged cell resulted in a loss of capacity.
Ni-MH minimize this effect and li-ion virtualy don't have memory effect. I mean by that, fully discharging the battery and recharging it totally won't restore the lost capacity, in the case of Ni-Cd it restore the capacity, that's why so many people recommend to do it not knowing it's useless and in the case of li-ion, is not good as it prefer incomplete cycle to full cycle.
Quick charging is bad too, yes dash charging is so usefull when you need to charge it quickly but if you care about your battery life, don't use it every night.
Anyway whatever how you treat your phone battery, in 2-3 years the battery will lose most of his capacity