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:shock: we all know that xda2 stanby time accdg to O2 is 11hrs....HEllo!!
my unit lasts only for 6 hrs! Even if im lowering down my brightness
to the lowest. Can i charge my Li-ion bat even it still has 50%? will it
affect its life?...thnks
No, Li-Ion do not suffer from memory effect. That was the main problem with older Ni-Cads and to some extend in Ni-Mh.
On the contrary, never use up the whole charge of the Li-Ion battery, this will exhaust the battery and shorten its life.
Li-Ion can be charged when it has any amount of charge in it, But you must use the OEM charger, any other charger may harm the battery as it cant detect when the battery is full. Li-Ions are very sensitive for over charge and may be damaged.
But has in mind two things about Li-Ions, their life limit is about three years in the average and that Excess charging and discharging will use the cycle count (each time you connect your battery to a charger is called cycle, even if it is for a short moment) so don't use up your cycles limit which is about 500 in Li-Ion.
Also, be aware of heat, never make your battery suffer from heat and temps close to or above 60 C, each time you do that you lose about 20% of the capacity of your battery. (if you leave the battery in the direct sun for a while in some places in the world, this can easily make it's temp pass that limit, and the internal thermometer in the battery cant stop this damage, it is designed to stop charging the battery when it's temp rise while being charged).
Hatamata, that was very usefull information to share with us about the Lithium batteries..
Thanks a lot.
Nothing to thank me for my friend, I owe this site a lot
Can someone help me out here this is for an Orbit 2 less than 1 week old. I charged the device this morning so by 09:00 it was on full power. By 14:00 its down to 75%. Usage below:
10 minutes phone calls
I have my email set to retrieve from Yahoo every 15 minutes
On battery the screen is set to 50% - 75% brightness
Co-pilot has live function and traffic updates, but I presume that is only when its actually turned on and running Co-Pilot
What is going wrong?
Firstly, did you give it 3 charges of 16 hours plus? I didn't, and don't have as good a battery life of some others that did.
Also, have you got Windows Live connected and checking your hotmail constantly? That killed my battery.
Finally, I leave HSDPA switched off, as I find it chews juice without being THAT much faster; 3G is fast enough browsing and downloading for me.
Good luck, keep us posted.
I've got a HTC TyTN (hermes) and i get the same problem: my battery wears off in maximum 3 hours after i fully charge it. all the connections are turned off,except for the phone function. also, while it's charging, no matter if it's charging through the usb or the AC charger, the battery gets very hot. PLEASE can anyone help
(i have the black satin normal rom, with the 1.43.00.00 radio version installed)
I all so have battery questions. This devise was advertised as an 7 hour talk time on GSM. Compare to my T-Mobile wing witch was only 5 hour talk time.
I don't use phone a lot during day only 5-10 min phone calls and every 60 min e-mail check. And T-mobile Wing (p4350) was going for 3 days no charge no problem. And This I have to charge every day. At the end of the day i have only 60% And T-Mobile USA don't have 3G eat.
I don't get it this phone supposed have one of the best battery life out of HTC phones. And I did charge it wan i first got it for long time before i tern it on.
About chargin and discharge our phones, whe have to remember that we do not use NiCd/NiMh batteries any more.
I have some facts about Li-ion batteries!!!
Guidelines for prolonging Li-ion battery life!
Unlike Ni-Cd batteries, lithium-ion batteries should be charged early and often. However, if they are not used for a long time, they should be brought to a charge level of around 40% - 60%.
Lithium-ion batteries should not be frequently fully discharged and recharged ("deep-cycled") like Ni-Cd batteries, but this is necessary after about every 30th recharge to recalibrate any external electronic "fuel gauge" (e.g. State Of Charge meter). This prevents the fuel gauge from showing an incorrect battery charge.
Lithium-ion batteries should never be depleted to below their minimum voltage, 2.4v to 3.0v per cell.
Li-ion batteries should be kept cool. Ideally they are stored in a refrigerator. Aging will take its toll much faster at high temperatures. The high temperatures found in cars cause lithium-ion batteries to degrade rapidly.
According to one book,[35] lithium-ion batteries should not be frozen (most lithium-ion battery electrolytes freeze at approximately −40 °C; however, this is much colder than the lowest temperature reached by household freezers).
Li-ion batteries should be bought only when needed, because the aging process begins as soon as the battery is manufactured.[13]
When using a notebook computer running from fixed line power over extended periods, the battery should be removed, and stored in a cool place so that it is not affected by the heat produced by the computer.
/Krypto
BadTasteUK said:
Firstly, did you give it 3 charges of 16 hours plus? I didn't, and don't have as good a battery life of some others that did.
Also, have you got Windows Live connected and checking your hotmail constantly? That killed my battery.
Finally, I leave HSDPA switched off, as I find it chews juice without being THAT much faster; 3G is fast enough browsing and downloading for me.
Good luck, keep us posted.
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16 hours?!?!?!!?
It's a highly debated point, but it seems some who have done the old "3 charges of 16 hours" have a longer lasting battery than certainly I do.
In fact the O2 shop I bought the phone from advised the same, although I didn't actually do it!
Who knows the real best thing to do, all I know is I only get a day out of it, with light to medium use and HSDPA turned off.
Personally, I'm a little speculative of the 16 hour charge times.
I'm not gonna try to be an expert here, but aren't Li-Ion charge circuits designed such that when the battery reaches capacity, the charge cycle is complete? Ie. There is no further trickle charge to the battery? In that case, the 16 hour charge is not doing any good.
But in any case, I myself get 2 days fairly easily with about 1.5-2 hours of phone calls in an Edge area.
I am a firm believer a big difference comes from using of Standby and your signal strength. I've noticed where I go ski'in there is a very weak signal and my battery life drops to 40% or less in one day. So I think this is one major characteristic that will vary between all of us and will dramatically affect the battery life test results.
DaRacerz, you are absolutly right!
No trickle charge is applied because the Li-ion is unable to absorb overcharge. Trickle charge could cause plating of metallic lithium, a condition that renders the cell unstable.
So charging for 16 hours won't do anything.
I purchased a new 2250mAh extended battery recently from megacapacity.com.
In a full charge it gives me 18-20 hours backup with 1 hr talk time only. I don't even use Wi-Fi, GPRS. Just simple calls.
Is it normal? i dont think. Original battery 1050mAh gave better performance when it was in good condition. What could be the issue?
I have tried almost every ROM but its almost same in every case.
Anybody having 2250mAh battery? pl share your thoughts.
Is there some problem with device not charging optimally or battery is bad?
2250
I have a 2250 battery purchased from megacapacity itself. The first charge lasted for 50 hours. The battery at the time of recharge was around 20% but I recharged again. I am sure it would have gone for another 10 hours at least.
This is with moderate calls, browsing, solitaire, always on Microsoft Push mail and lot of email reading and writing. I was basically testing the battery backup; so kind of stressed my phone a bit to see the actual backup time available.
On a related note, I was definitely not happy with megacapacity as they didn't send me the correct battery cover for vox and never responded to any of my emails. So now my phone is without battery cover. And I am planning to buy one more normal sized battery because of this. Thanks to megacapacity.
Sankar
PS: - I am using fireburned 6.1 stable rom 1.4.
I am pretty happy with Polar CEll 1300 mAh battery. It gets me through the day with heavy use! It dies when I am IMing over Wifi for a couple of hours in the evening.
Is it device charging issue?
My device was also working good with original battery. I used it for approx 18 months. After that (couple of months back) it started giving problem shutting down device suddenly while in the call. Its calibration was totally disturbed, i happend due to high temperatures some time when in car, i think so.
In nutshell that battery was of no use to be thrown out. Then,
I bought 2250 mAh but its not giving expected performance, its lasts for max one day with normal use.
Could it be due to issues with device charging circuit? It gets charged fully in one hour. i suspect there might be some issue with device circuit.
or finally battery is not good?
Pl advise.
skchattha said:
My device was also working good with original battery. I used it for approx 18 months. After that (couple of months back) it started giving problem shutting down device suddenly while in the call. Its calibration was totally disturbed, i happend due to high temperatures some time when in car, i think so.
In nutshell that battery was of no use to be thrown out. Then,
I bought 2250 mAh but its not giving expected performance, its lasts for max one day with normal use.
Could it be due to issues with device charging circuit? It gets charged fully in one hour. i suspect there might be some issue with device circuit.
or finally battery is not good?
Pl advise.
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parthabhatta & h4waii,
You both have good experince with VOX battery, pl share your thoughts on this.
Hi,
Actually I use a battery bought from megacapacity but its 1100mAh. The battery is not giving me any problems and after a few calls, roughly one hour surfing and some music playing 20-30% battery is still left. So what I feel is being 2250mAh it should last atleast 80% more than 1100 mAh if not double. You can check the Power management battery bar while charging - whether it shoots up occassionally at random or gradually increases with increments of 1% till it attains 100%. If it shoots up, try with USB charging and see if the problem recurs. Give it a try and let us know.
Just be careful of using BIG battery.
parthabhatta said:
Hi,
Actually I use a battery bought from megacapacity but its 1100mAh. The battery is not giving me any problems and after a few calls, roughly one hour surfing and some music playing 20-30% battery is still left. So what I feel is being 2250mAh it should last atleast 80% more than 1100 mAh if not double. You can check the Power management battery bar while charging - whether it shoots up occassionally at random or gradually increases with increments of 1% till it attains 100%. If it shoots up, try with USB charging and see if the problem recurs. Give it a try and let us know.
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Click to collapse
Thats a good idea, sure i will check and let you know.
I charged my 2250mAH in an external charger, which removes any possibility of the device shutting off charge after it reaches a certain voltage. It allows the battery to make that choice. I had good use with it, very heavy usage and it would last drastically longer than the OEM 1100mAH unit. I'd recommend just buying a 1300mAH as the 2250 is very cumbersome to carry around on the device.
Again, I still have mine - if anybody wants to buy them.
There are a few issues with keeping the sheet in contact with the pins, else it will shut off randomly, I padded it with paper and pulled the pins out a bit.
i got mine a year ago from ebaystore dmc-batteries.
first i also got the wrong backcover, but they sent me very fast the correct one.
The battery is definitely not twice as strong as the original one.
At normal use I think the max is 1,5 day. Light use gives me 2 days but heavy use with bluetooth or wifi or gprs only 1 day.
as h4waii I had in the beginning some problems with the contacts and sudden loss of power because of that, but that disappeared with time
Still I can't make a point...I'cant determine were is good to buy (obviously referring xda user's opinion to how much the battery lasts) and where is better not to buy. LoL
TheBo said:
Still I can't make a point...I'cant determine were is good to buy (obviously referring xda user's opinion to how much the battery lasts) and where is better not to buy. LoL
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Click to collapse
dmc-batteries gave me good service and are quick and friendy in their replies. I recommend them.
Thank you birdibird , but my intention was a survey to know what brand (seller) of ezxtended battery lasts more than an other. Just that
Because I've read of battery lasting 4-5 days with normal usage and others not lasting more than 1!
Hello everyone
I was wondering if its ok to leave the transformer connected to the charger.
Is it like the Evo with trickle down when it reaches 100%
I dont want to over charge it. If it were my laptop i would disconnect the battery at full charge. But its not possible to do that with the transformer.
I want to keep my cycle count low and prevent over charing.
I also wonder what happens in a few years when the battery is shot...
Charging is what damages Li-Ion batteries... I'd recommend not keeping it on the charger all the time. Android will purposely not keep the battery at 100% to help avoid some damage.
Li-ion prefer to be around 20-80% charge.
When battery is 100% and you keep the charger connected, heat will begin to build up and eventually you will kill your battery.
I'd do as with a notebook: charge till 100%, then remove battery or charger (in case of the tablet charger ) . Then use your tablet and recharge when needed / desired. And from time to time a full charge / discharge cycle won't do any harm.
Just my 2 cents.
Regards.
These tablets don't automatically recognize when it's fully charged and turn off the charging?
Ravynmagi said:
These tablets don't automatically recognize when it's fully charged and turn off the charging?
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Click to collapse
They do. There are other threads asking why thier TF's don't show 100% when unplgged from the charger. Same as it does on my Evo.
I think pretty much every modern device recognizes a full charge and responds accordingly. In fact, MacBooks will throttle performance if the battery ISN'T kept in while the system is running on A/C.
Heat will damage a battery, but it's not heat from charging but heat from operation. If a notebook is poorly designed and the battery is near a heat source, then removing the battery might be a good idea (except with the aforementioned MacBooks), but that's independent of the charging issue.
I think it's fine to keep it plugged in. These devices are smart enough to manage such things. Of course, the TF's charging cable's so short it's hard to use when plugged in, but that's a different issue entirely.
CalvinH said:
When battery is 100% and you keep the charger connected, heat will begin to build up and eventually you will kill your battery.
I'd do as with a notebook: charge till 100%, then remove battery or charger (in case of the tablet charger ) . Then use your tablet and recharge when needed / desired. And from time to time a full charge / discharge cycle won't do any harm.
Just my 2 cents.
Regards.
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Click to collapse
From what I understand this process cannot and will not kill the battery. This did happen in the old type of batteries with the ,emory effect but these new batteries and the OS's management system for charging does not allow the battery to be killed.
it will heat up and that would happen as there is a flow of electricity but not to a level that would kill the battery.
Cheers
IS it normal to go from 4% battery to 99% in under 3 hours ?
I thought this was supposed to take 8 hours to charge.
Cheers,
gpearson1968
gpearson1968 said:
IS it normal to go from 4% battery to 99% in under 3 hours ?
I thought this was supposed to take 8 hours to charge.
Cheers,
gpearson1968
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Yes that's normal. It's meant to take about 3hrs.
Thanks guys...
Still dont know about it. Because I think its like my EVO and technology got so good that my battery is protected.
I really dont want my transformer to become a expensive paper weight or non-mobile because after a few years it has 45 mins battery life.
I've got the first full charge and full depletion done. Is it ok to use while charging now as long as I fully charge and fully deplete it a couple more times?
error12 said:
Thanks guys...
Still dont know about it. Because I think its like my EVO and technology got so good that my battery is protected.
I really dont want my transformer to become a expensive paper weight or non-mobile because after a few years it has 45 mins battery life.
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Click to collapse
batteries will degrade over time....would you be keeping this tablet for over 2-3 years? a simple battery change could work if ever needed
I am no expert, but I have spent some time searching around the internet looking for information on the best methods for improving the life of a battery. Most of the information I have found said it is bad to completely discharge a Li-polymer battery. The articarles stated it was best to charge the battery when it reaches 20% to avoid shortening its life.
Sent from my DROIDX using XDA App
Batteries are like muscles - they like to be exercised.
Leaving the unit plugged in WILL NOT HURT YOUR BATTERY. Period. The charging circuitry in modern devices is smart enough to cut current to the battery once it has reached a certain level of resistance.
Batteries do not like being deeply discharged. Most devices will shut off before the battery gets too deeply discharged, but it's never a good idea to tempt fate by running it until the device shuts off.
What really determines a battery's life is the number of cycles it has been put through. A cycle would be a full charge followed by a full (or to a lower end threshold) discharge.
The old original Lithium Ion batteries used in laptops would usually last about 300 full cycles or so - about a year if you used it on the battery every day. Partial discharges of course only count as fractions of a cycle.
Given the life of these types of devices, considering we'll likely upgrade to the next big thing in a year or so, I don't think anyone here will come close to 'wearing out' a battery.
EMINENT1 said:
I've got the first full charge and full depletion done. Is it ok to use while charging now as long as I fully charge and fully deplete it a couple more times?
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As stated, these are Li-Ion batteries, and they do not need to be trained. The only reason you might need to do any training is to calibrate Android's understanding of the battery (although I doubt you need to do a full discharge for that, either).
It's not going to suddenly kill it, but it will over time hurt your battery's life.
I went ahead and did a full discharge/charge cycle, but only because Asus said to do so in the manual. Maybe the copywriter just copied/pasted from a circa 1990's manual for a device with a NiCd battery, but I figured if they're suggesting it, I might as well do it.
I have little to no coding experience and am seeking some advice. I have recently acquired a Zerolemon extended battery for my note 4 and no matter I do or try I cannot get the battery to calibrate with the phone properly. Under heavy use the battery will drop to 1% after 18-20 hours and then hang there for another 10-12 hours.
So my idea is to use the battery voltage to give me a better idea of what i have left on the battery. After multiple cycles the numbers have been about the same. My max is 4.392v and shuts off at around 3.441v. So I came up with the formula
**100-((MaxV-CurrentV)x10) = Current % based on voltage**. My question is, how hard is it to write code to pull a value(current battery voltage) from the phone, and display the value in a widget on the screen. Is it something I could learn relatively easy or should I charge someone else with doing it?
Any help or advice would be much appreciated.