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
Just bought a 3500 mah battery. I heard if charged with the evo it will only charge it to 1500 mah. Is that true? If so do I have to charge out externally or is there another way?
Sent from my htc evo 4g. ALL HAIL EVO 3D!!!
No, not true at all. At first, yes, because it's used to the 1500 mAh stock battery, but it will start being fully used after a few charging cycles. Just give it time, and it'll be fine.
You don't need anything extra.
You can also wipe battery stats to make the process a little quicker.
I can verify what JustRuin wrote - I actually gathered data from Current Widget and Bat Stat, and compiled them into a spreadsheet (hey, I was bored at work, and it beats calling customers). What I found is that the phone will display that it's full in terms of percentage, once it's charged to what would be 1500 mAh based on the percentage it's showing when you start charging. For example, if you're showing 33 %, that would be 500 mAh out of 1,500 mAh for the stock charger. If you then charge it at a net charging current of, say, 1,000 mA, the light will turn green and the phone will show 100% in about an hour. but the voltage will still be down around 3.9v, and the net charging current will continue at the same level until the voltage reaches around 4.2 volts. On the stock battery, the charging current will start dropping after you reach 60%, and by the time you're around 90%, it will barely be charging at all. On the 3500 mAh battery, charging current stays consistent until you're around 4.15 -4.2v. If you simply leave it on the charger for a couple hours longer, you'll have a full charge and no problems with battery life.
hercules rockefeller said:
I can verify what JustRuin wrote - I actually gathered data from Current Widget and Bat Stat, and compiled them into a spreadsheet (hey, I was bored at work, and it beats calling customers). What I found is that the phone will display that it's full in terms of percentage, once it's charged to what would be 1500 mAh based on the percentage it's showing when you start charging. For example, if you're showing 33 %, that would be 500 mAh out of 1,500 mAh for the stock charger. If you then charge it at a net charging current of, say, 1,000 mA, the light will turn green and the phone will show 100% in about an hour. but the voltage will still be down around 3.9v, and the net charging current will continue at the same level until the voltage reaches around 4.2 volts. On the stock battery, the charging current will start dropping after you reach 60%, and by the time you're around 90%, it will barely be charging at all. On the 3500 mAh battery, charging current stays consistent until you're around 4.15 -4.2v. If you simply leave it on the charger for a couple hours longer, you'll have a full charge and no problems with battery life.
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so what your saying is that even tho the light is green, the phone will still be charging?
Yep, it's definitely charging.
This is why i dont use sbc. I went a whole day without charging. From 7:30am to just about 15 mins a.go and i still had 50 percent left on my battery. simply just unplugging it and plugging it back in before i take my shower in the morning and i stay at 100% for about 2 hours.
Hi,
I'd like to have your opinion about how to preserve the health of our One X Battery in the long run... I've done some full charge/full discharge cycles to properly initialize the battery but now I'd like to understand what is the better way of charging this Li-Poly battery... I've read on the web that Li-Poly batteries are "happier" to be charged when not at 0% (i.e. around 10%) and also it is better not to fully charge them (this seems quite strange to me) to preserve their capacity (but you do not use the full capacity if you disconnect them at 95%, for example...).. Is there any "official" or at least scientific "How To Preserve Your Battery" guide that addresses Li-Poly batteries?
Second question: do you think it is better to charge via USB rather than via Power-line, since it is a slower charge (~5 hours VS ~3.5 hours)?
I believe that because, like most modern phones, the battery has a charge timer and a circuit to prevent overcharge, it doesn't matter too much much about the speed of charging. Everything i've looked at about Li-Poly cell batteries instist on an even charge across cells, which i'm sure HTC have ensured.
Apart from that the usual would apply, avoid leaving it plugged in for long length of time (i.e. over night) as trickle charging can damage most types of batteries ensure you discharge it fully now and again, i'd avoid going to 0% from what you've heard but no mobile phone actually fully discharges the battery (hence you can still switch it on after it has died).
I know the HTC one has an internal battery, but like any other battery if you look after it it should last at least 2 years loosing only a small portion of battery life.
If i find any decent guides i'll post them here.
Hi,
I recently bought the 2GB RAM variant of the ASUS ZenFone 2 (ZE551ML). I noticed that if the phone was kept on charge for an extended period of time, after the battery had reached 100%, it would take an exorbitant amount of time to go from 100% to 99% and would discharge normally after. During this period the battery section under settings would not report any usage statistics either.
However, if I disconnect it before it hits 100, I noticed that the rate of discharge is how it should be.
If I leave it connected to the charger after it hits 100, CPU-Z reports a battery voltage of 4278mV and once I disconnect it starts discharging from 4227mV. I read somewhere that 4.2V is the max safe limit for a Li-Po battery.
I'm concerned if any of this is an indication of the battery getting overcharged. Any inputs would be appreciated.
Thanks.
The last 1% is the phone trickle charging so it does not overcharge. Some phones stop charging when the battery hits 100%, like the Nexus 4. Other phones keep trickle charging and pull energy from the charger over the battery like Nexus 5 or the Asus Zenfone2.
I agree with the previous poster, the phone trickle charges at the end.
As for leaving your phone on the charger overnight etc, I wouldn't worry, I do it all the time. The phone battery wouldn't overcharge if left on the charger for a longer period of time, it would just stop charging and the phone would draw power from the adapter.
saurav1990 said:
Hi,
I recently bought the 2GB RAM variant of the ASUS ZenFone 2 (ZE551ML). I noticed that if the phone was kept on charge for an extended period of time, after the battery had reached 100%, it would take an exorbitant amount of time to go from 100% to 99% and would discharge normally after. During this period the battery section under settings would not report any usage statistics either.
However, if I disconnect it before it hits 100, I noticed that the rate of discharge is how it should be.
If I leave it connected to the charger after it hits 100, CPU-Z reports a battery voltage of 4278mV and once I disconnect it starts discharging from 4227mV. I read somewhere that 4.2V is the max safe limit for a Li-Po battery.
I'm concerned if any of this is an indication of the battery getting overcharged. Any inputs would be appreciated.
Thanks.
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Depends on the battery. Some are rated for 4.35. My Zenfone 2 charging to a solid 4.3+. The voltage will always read lower when removing the charger. After removing the charger, use your phone for about 5 minutes. This is your solid voltage. I wouldn't worry about 4.25. This is no problem.
Chinaphonearena said:
Depends on the battery. Some are rated for 4.35. My Zenfone 2 charging to a solid 4.3+. The voltage will always read lower when removing the charger. After removing the charger, use your phone for about 5 minutes. This is your solid voltage. I wouldn't worry about 4.25. This is no problem.
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Mine goes beyond 4.3, I'm seeing as high as 4.33...Can you confirm the voltage that's listed as safe for the battery?
So I bought myself a decent USB multimeter (RuiDeng UM25C) because I was curious about my Mi 6 battery capacity after 20 months of everyday heavy usage.
I was avoiding charging to 100% all this time (max to 70%), only charging to full once a month maybe and never using a phone during charging. I also rarely discharged to less than 30%. The full charge counter in /sys/class/power_supply/bms/cycle_count is showing 642 full accumulated charge cycles, so quite a lot.
USB meter showed 14300 mWh after a full charge 0-100% (which is 110% of the original capacity 12900 mWh, impossible). So I did a search and found an article saying that Quick Charge 3.0 has around 90% charging efficiency.
So I made a quick mathematics and calculated that the battery should have taken in 14300 mAh x 90% = 12870 mAh (the rest of energy dissipated as a heat), which is basically new battery's capacity (which is again quite improbable, even with my special battery treating ).
My question is: is this calculation wrong? And if it is totally wrong - what should I count in additionally to get the more proper mWh estimation?
Thanks for any help