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Man, I hate starting new threads! I did a simple search and couldn't find this problem anywhere else, so here goes:
Earlier in 2009 I bought an extended 2400mAh battery for my Kaiser (8925). Everything is working just fine, except that I noticed that the phone doesn't seem to notice that the battery life is much better for this new battery.
What I mean is: after a few hours of usage, the battery level drops at a normal rate.
Once the phone tells me the battery is almost dead (and sometimes the phone will shut off if I ignore this), I can shut down the phone, remove the battery, wait a few seconds and then replace it and boot back up the phone.
At this point, the phone will usually tell me that the battery is at 33% to 36% charged. Notice that I did not charge the battery, I just removed it and put it back in.
When I first got the battery, I cycled it completely three times in the phone, removing it twice and replacing it to ensure that the battery was completely drained before charging it to 100%. (Yes, I know that is only recommended for metal-hydrates, but I feel better doing that anyway).
On the top-end, it usually takes about two hours to charge the phone from 30% to 99% via a standard USB2.0 connector.
However, the phone will report that the battery is not fully charged for nearly an hour after reaching 99%.
I know what you are probably thinking; Why is this guy complaining about his battery performing better than his phone reports?
Well, it IS kind of annoying. I would like the phone to properly report the remaining percentage for my own benefit. I really hate having to guess at how much time I have left before I need to drop it off at a computer or wall outlet while I find something else to play with for three or four hours.
So... Does anyone know how I can convince my phone that the battery is pretty awesome and to start reporting the actual battery life?
I just got some new batteries for my i-9000. I am wondering, I have always heard LIthium batteries do not like to be fully discharged. I want to perform a calibration on the new battery, but all the battery calibration apps say
1.Fully charge the battery
2.Press calibrate battery button.
3.Run the phone fully flat until the battery dies.
4.Fully charge the battery to 100% uninterrupted.
Now, step 3, going all the way until the phone dies, is that a good thing to do or a bad thing to a new battery?
Letting your cellphone's battery drain until the phone dies is a normal thing that won't damage your battery, because the battery won't really go to 0% charge.
Cellphones always shutdown it-self when the battery levels get too low (like 3%), to avoid the damage it would do in the Li-ion battery if it would go to 0%. So you have nothing to worry about.
yeah mine shuts down around 2-3% percent for that reason. You'll be fine.
thanks.
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just doing it once when you get a new phone or after noticing horrible battery life on a newly flashed ROM can work wonders
other than those times, I only let my phone get to 20-40% before I plug it back in
I Use BOS Gingersense Port From Kingdom, My battery is good and i didnt do that whole discharging,recharging crap.
calibration works for me...
Calibration even worked for me too, on my Galaxy 3. Previously i was getting backup of only 1 day, but after calibration i get around 1.5 days. I know its not much improvement, but still its worth.
And you don't need calibrate frequently. Just once in two weeks is fine. And I've heard that deep discharge once a while is infact good for the battery. Correct me if I'm wrong.
waiting for phone to completely die right now. One question though can I turn on phone while charging or should I just leave it off after dieing?
I called Sammy, they told me letting the phone turn off by itself because the battery can't power it is bad for the battery in the long run, they said you can't really see the bad effect that time, they told me, we have learned on are testing that when you see the low battery message pop up that is where you need to charge the phone, that warning is where the calibration starts, now draining it to the point that the phone turn itself off is bad for the battery. Do you believe that?
Sent from my SAMSUNG-SGH-I997 using XDA Premium App
Only if you leave the cell empty.
It's best to recharge a cell as soon as possible if you have discharged it.
Discharge/charge cycles should be kept to a minimum, ie when you first get the battery, when you are sure you need to recalibrate, and when you've got no choice.
Top up charges are best for lithium batteries.
The charging circuitry in the phone should protect the battery from over discharge. It also protects the phone from overcharging. However, just like a spring, it's the constant charge/discharge that damages a battery. I would not run it down every day but it should not damage the battery, only cause it to wear out faster.
Source: I'm an electrical engineer.
Try to avoid frequent full discharges. Occasional full discharges are okay.
Lots of uncertainty here, lol.
A new Li-Ion cell will output ~4.2V when fully charged and ~3V when it is totally discharged. Every single smartphone I've owned would shut down before the cell dropped below 3.5V. Draining your phone's battery until it dies will not hurt the battery or your phone. No worries about batteries catching fire.
Repeated or frequent full discharges will wear your battery out much faster, though.
I've brought my Desire Z back for reparation (Mainboard died and replaced by an official repair center).
I've bringed it with my stock Battery fully loaded (I took it from the charger and 30 minutes later it died). When i picked it up, the battery was totally empty. Nothing in it. The Phone didn't even turned on!
It taked a while on the charger, but finally it turned on and was charged to 100% in normal time.
Since that, I experience a huge battery drain. When I release my phone from the charger on 7.30AM, it is dead on 4.30PM with no use! No SMS, phonecall, nothing. Only Gmail sync.
I've tried different ROM's (With- and without sense) and did restore my phone to stock. It doesn't solve my problem, the drain still stays huge, even with no apps installed!!!
I've tried another battery > same problem!
What can this be? Normally, my Desire Z last about 1,5 days oder 2 days when nothing happens. Why it's draining so fast, even if it's not used?
What can I do to resolve this ??
JassyNL said:
I've brought my Desire Z back for reparation (Mainboard died and replaced by an official repair center).
I've bringed it with my stock Battery fully loaded (I took it from the charger and 30 minutes later it died). When i picked it up, the battery was totally empty. Nothing in it. The Phone didn't even turned on!
It taked a while on the charger, but finally it turned on and was charged to 100% in normal time.
Since that, I experience a huge battery drain. When I release my phone from the charger on 7.30AM, it is dead on 4.30PM with no use! No SMS, phonecall, nothing. Only Gmail sync.
I've tried different ROM's (With- and without sense) and did restore my phone to stock. It doesn't solve my problem, the drain still stays huge, even with no apps installed!!!
I've tried another battery > same problem!
What can this be? Normally, my Desire Z last about 1,5 days oder 2 days when nothing happens. Why it's draining so fast, even if it's not used?
What can I do to resolve this ??
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try a new battery? Reset battery stats and give it a few days to actually get accurate readings? 8 hours isn't unheard of especially if your battery is giving up the ghost. give those thigns a try and maybe turn off sync and/or data to see if that makes a differance.
killj0y said:
try a new battery? Reset battery stats and give it a few days to actually get accurate readings? 8 hours isn't unheard of especially if your battery is giving up the ghost. give those thigns a try and maybe turn off sync and/or data to see if that makes a differance.
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Thanks! I've already tried a new battery, but that makes no sense.
I'm now draining it to zero, i.e. when it's fully dead, and then charge it to 100% for 8 hours. When it's charged, i'll wipe battery stats. Let's see.
When anybody has more tips, i'm pleased to hear them!
Here's a tip: don't drain your battery to zero. This is a great way to shorten the life of the battery, or completely ruin it.
For purposes of battery meter calibration, draining to 10-20% is plenty sufficient.
There should be no problem draining a battery to zero as shown by software. There is a myth/misunderstanding that this is a bad thing because people confuse it with the fact that Lithium Ion batteries can be permanently damaged if they are drained too low.
BUT any device using such batteries will have its circuitry setup to have 0% set to a point above this damaging threshold.
So the "too low" point in hardware is likely to be below the zero point that the phone's firmware and software will let you go to.
Sent from my Desire Z running CM7.
redpoint73 said:
Here's a tip: don't drain your battery to zero. This is a great way to shorten the life of the battery, or completely ruin it.
For purposes of battery meter calibration, draining to 10-20% is plenty sufficient.
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x2 I concur with this. No need to fully discharge the battery, one it probably doesn't even fully discharge because I'm pretty sure the software is saving you from yourself, plus when the battery stats are uncalibrated I'm fairly certain it reads as discharged but in fact is only partially thus the calibration is off. Lastly I'm if the opinion that throwing different charge levels works better because it more closely resembles real life charging situations. Also letting it charge for that long does nothing because the phone charges only a trickle when full in order to not ruin the battery, similar to a laptop. Overcharge protection....
Thanks again!
Now I did charge it to full and wiped Battery stats.
After 1hour 30 minutes, it lost 10%. Did only send 2 short mails with Gmail.
Here is the usage chart:
- Screen 54% (Time active 4m 51s), Brightness ~20%
- Mobile Stand-By 20% (Time active 1u 26m 13s)
- Phone inactive 18% (Time Active 1u 21m 21s)
- Gmail 5% (CPU Total 31s, CPU Foreground 25s, enabled 51s)
- Android OS 3% (CPU Total 21s)
CPU is on idle ~10%, as always. I don't see any apps that are burning my battery.
s there something abnormal here?
just compared it with my statistics (running virtuous affinity)...
Mobile Stand-By seems to be very high... i have 4% (time active 2 h 30 m)
maybe radio related?
hoffmas said:
just compared it with my statistics (running virtuous affinity)...
Mobile Stand-By seems to be very high... i have 4% (time active 2 h 30 m)
maybe radio related?
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This stats come from Virtuous Affinity also. I'd had never had any problems with such a drain with my 'old phone'. As soon as I got it back from the repair center, the battery drain is huge.
I've reflashed the latest radio for my phone, made a Superwipe and made a fresh install of Viruous Affinity. Let's see.
I think that 'Cell Standby' is killing my battery. It is at the top of the usage list with 38% and it's all time active. My phone was left it's charger at 7.15AM, now at 9.00AM it lost 20% of it's battery on idle use only. On 9.00AM, I've turned my phone on airplane mode. Let's see if that works.
I will recover the phone to stock tonight. If this isn't working, I'll return the phone to the store.
Even with the phone on airplane mode the battery is heavily draining. My last escape is to remove the SD Card. If the draining continues, then I will bring my phone back.
Does the battery came hot? Like more than normal?
With temp+cpu app you can monitor your temperature.
Because if on idle the temperature's around 25-28 C, you should be alright.
And then you can consider what steviewevie said; lithium battery can be damaged if you go on a too low voltage. Even if the phone as his ''protection'' to not get the battery to a critical level, the battery can loose power even if its not used.
Lithium ion, its cool but not perfect.
Try a OEM brand new battery.
steviewevie said:
There should be no problem draining a battery to zero as shown by software. There is a myth/misunderstanding that this is a bad thing because people confuse it with the fact that Lithium Ion batteries can be permanently damaged if they are drained too low.
BUT any device using such batteries will have its circuitry setup to have 0% set to a point above this damaging threshold.
So the "too low" point in hardware is likely to be below the zero point that the phone's firmware and software will let you go to.
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Click to collapse
I've seen plenty of people on XDA with this phone and others that have rendered their battery unable to charge by letting it discharge to zero. Yes, there are failsafes meant to prevent over-discharge, but they apparently do not always work. The damage is not "permanent" in that its just the protection circuit of the battery kicking in. But the only way to bring the battery back from "sleeping" is with a special battery meter with boost function, which most people do not have access to. So for all practical purposes, its cheaper to just buy a new battery.
http://batteryuniversity.com/learn/article/low_voltage_cut_off
Yes, over-discharge will not LIKELY kill your battery in this way. But there is no point in taking the risk. The battery meter is far from accurate in the best of conditions. So there is zero benefit to letting the battery drain to zero, as opposed to 10 or 20 %, just for the benefit of calibrating the battery meter.
Also, even if over-discharge does not instantly "kill" the battery, running full cycles at the least will shorten the overall life of the battery. Its best to avoid full cycles and charge often.
http://batteryuniversity.com/learn/article/do_and_dont_battery_table
Now this is just my experience from reading the experiences of others on XDA. I know there are hardware techs that can give much more first hand experience with batteries and may disagree. But as I figure, better safe than sorry. Especially when you consider there is no real benefit to letting it drain to zero on purpose.
oVeRdOsE. said:
Does the battery came hot? Like more than normal?
With temp+cpu app you can monitor your temperature.
Because if on idle the temperature's around 25-28 C, you should be alright.
And then you can consider what steviewevie said; lithium battery can be damaged if you go on a too low voltage. Even if the phone as his ''protection'' to not get the battery to a critical level, the battery can loose power even if its not used.
Lithium ion, its cool but not perfect.
Try a OEM brand new battery.
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Click to collapse
The temp of the battery don't exceed 28 degrees, I test this with Battery Indicator Pro. When discharged, the Voltage is around 3,6 (Which is normal behaviour). When charged, it,s 4,2V which is normal also.
I have already tried a new battery, and it doesn't make sense. Same behaviour.
I'm really clueless, because it drains the battery always. Airplane mode an removal of the SD card makes no difference.
I will return to stock tonight, charge again, and see if it behaves the same. When yes, then I will return the phone as I don't accept such behaviour (Normally, my Battery last 30+ Hours on idle).
Thanks for your tips and help for so far! I will report.
Ive read that the way weve always used with the wiping of battery stats actually doesnt do anything.
I got a GTmax 3500 mah battery but the phone turns off at 0, even though it has power, its sitting at the recovery screen and is just fine. I was wondering, do i just leave it here to drain it, or do I have some other method of calibration. Im pretty sure its going by its old stats because it drained in 12 hours and turned off. I SHOULD get ~23-24 hours on the new battery.
Yes, it has been determined that the battery stats file we used to wipe does absolutely nothing to prolong the battery's charge on any Android phone. The only thing it does is wipe out the statistics that we see for what is using the battery. Personally, I've never noticed any difference in battery longevity when wiping the stats file, so I stopped wiping it long before this information came to light.
As for your issue, the phone turning off at 0% seems pretty normal to me. I'm not really sure what your concern is. Just because you can access the recovery screen doesn't mean there is enough power to let the phone run normally. I would let it charge for several hours before using it again or at least leave it on the AC charger while you use it. It is also not a good idea to let the phone discharge down to 0%, as this can shorten the lifespan of the battery. Typically, the battery power meter is pretty accurate. Plus the battery should be fully charged before use. It is speculated that if you condition the battery itself (fully charge, then fully discharge (the one and only time this should be done), and fully recharge it again), you may see better life. Considering that on a typical day, I get about 5 hours of heavy use before I have to plug it in, I would welcome 12 hours without having to charge.
DarkShim said:
Yes, it has been determined that the battery stats file we used to wipe does absolutely nothing to prolong the battery's charge on any Android phone. The only thing it does is wipe out the statistics that we see for what is using the battery. Personally, I've never noticed any difference in battery longevity when wiping the stats file, so I stopped wiping it long before this information came to light.
As for your issue, the phone turning off at 0% seems pretty normal to me. I'm not really sure what your concern is. Just because you can access the recovery screen doesn't mean there is enough power to let the phone run normally. I would let it charge for several hours before using it again or at least leave it on the AC charger while you use it. It is also not a good idea to let the phone discharge down to 0%, as this can shorten the lifespan of the battery. Typically, the battery power meter is pretty accurate. Plus the battery should be fully charged before use. It is speculated that if you condition the battery itself (fully charge, then fully discharge (the one and only time this should be done), and fully recharge it again), you may see better life. Considering that on a typical day, I get about 5 hours of heavy use before I have to plug it in, I would welcome 12 hours without having to charge.
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Thats strange. I got some friends with iPhone 4S and they get over a full day with some moderate use. I get 12-16 hours tops. I can easily drain it in 8 hours. Doesnt seem like it should require mid day charging.
Rekzer said:
Thats strange. I got some friends with iPhone 4S and they get over a full day with some moderate use. I get 12-16 hours tops. I can easily drain it in 8 hours. Doesnt seem like it should require mid day charging.
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Under volt, setcpu, good kernel, brightness etc.
Sent from my SGH-T989 using xda premium
Rekzer said:
Thats strange. I got some friends with iPhone 4S and they get over a full day with some moderate use. I get 12-16 hours tops. I can easily drain it in 8 hours. Doesnt seem like it should require mid day charging.
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It is very difficult at best to compare iDevices and Android devices. The hardware and software are completely different. Regardless, I also know folks with the iPhone 4s. About half of them drain their device within 5 hours. Constantly doing stuff... The batteries on most smartphones are just not up to standards with today's hardware. At any rate, the rest of the folks I know with the iPhone 4s are more moderate users. They get about 7-8 hours. One person claims she gets 9. It depends on usage. Plus, as avarize stated, underclock, a decent kernel, screen brightness, etc... And SetCPU is a great app (even for non-rooted devices). Also, constant text messages tend to drain devices. It just depends on how you use it.
So, I bought another battery. Will this sort it?
Also, what's the usual procedure?
Should I charge the battery to full in the phone (turned off) then boot, set up, then charge again and reset battery stats?
The problem is that the battery control chip doesn't take into account that the battery ages.
Resetting battery stats or charging while turned off will only clear the stats you see in the settings menu. This guide will make your battery drain to 0% again: http://forum.xda-developers.com/showthread.php?t=1534892
I don't know what a new battery will do though.
I gathered that, but as the phone is going to a new user (my stepson) we got him a new battery anyway
I just wondered what the correct procedure is. I know you need to do a first charge with a new battery, as with a new phone, however, this phone obviously has a working ROM already on it.
So, the phone is charging now, switched off. Should I turn it on, use a little, then use the battery calibration app to delete the stats and then drain to 0%?
Kryten2k35 said:
I know you need to do a first charge with a new battery, as with a new phone
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Well, that assumption is probably inherited from the NiHM batteries in the past, because it's not needed with Li-Ion batteries. In fact charging to 80% is better than charging to 100% and keeping it plugged in.
You can read more about it here and here.
Kryten2k35 said:
So, the phone is charging now, switched off. Should I turn it on, use a little, then use the battery calibration app to delete the stats and then drain to 0%?
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Just charge it and use it for a full cycle. If it shuts down at 15%, you can try the battery calibration from the thread I mentioned above. If it doesn't, you're battery capacity is the same as the one the battery chip has calculated, which is good.
So, why does the first charge take so long?
This thing is still charging and it's been on the charger for 3 hours, whereas usually it'd be charged fully by now.
Been like that for every Li-Ion battery I've ever had (including my S3, took around 6 hours to charge, usually takes 3).
EDIT:
Just to clarify, I don't intend on leaving it past the green light. As soon as it says it's full I'll be taking it off charge and not trying ot overcharge it. But I still have the orange charging light after 3-4 hours.
To be honest, I don't know. Maybe it's a safety to prevent overcharging. Coincidentally, I've got exactly the same issue now. I asked about it in the calibration thread. I suppose it's normal, but I'm not sure about that.
Kryten2k35 said:
So, why does the first charge take so long?
This thing is still charging and it's been on the charger for 3 hours, whereas usually it'd be charged fully by now.
Been like that for every Li-Ion battery I've ever had (including my S3, took around 6 hours to charge, usually takes 3).
EDIT:
Just to clarify, I don't intend on leaving it past the green light. As soon as it says it's full I'll be taking it off charge and not trying ot overcharge it. But I still have the orange charging light after 3-4 hours.
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my battery took just over 6 hours to charge the other day from completly dead
Sent from my HTC Desire