Newly flashed rom, charged it full, and recalibrated battery.
only 6% battery drain while sleeping
But when im using it, it could use 1% battery after 5 minutes, but then suddely the next minute it has dropped 2-3%.
Sometimes it holds the battery, but then suddely it drops like crazy.
I havent let the battery die after recalibration, but i thought that after resetting the battery stats it should be more linear battery drain when im doing the exact same operation the whole time, so i guess it would drain the same amount of battery, not being that jumpy
b1rken said:
Newly flashed rom, charged it full, and recalibrated battery.
only 6% battery drain while sleeping
But when im using it, it could use 1% battery after 5 minutes, but then suddely the next minute it has dropped 2-3%.
Sometimes it holds the battery, but then suddely it drops like crazy.
I havent let the battery die after recalibration, but i thought that after resetting the battery stats it should be more linear battery drain when im doing the exact same operation the whole time, so i guess it would drain the same amount of battery, not being that jumpy
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using Current widget or battery monitor to observe how many mA it consume every one or five minutes? average 2-10mA is normal
Related
It's a 3500mAh extended battery.
I put it on the charger and it doesn't charge, the charging light just flashes and battery monitor widget just shows it discharge until it hits zero and then it charges up to 100% really fast (but it doesn't get a good charge, since reading feeds for 30 min took it down to 60%)
Last time I fixed this by bump charging with the phone off and then it lasted for a week or so pretty good.
Well it did it again last night, so I tried bump charging and resetting battery stats. After reboot it fell to 85% pretty fast.
Another odd thing it's done is it will be at like 65% and then after a reboot it will sit at 1% for the rest of the day until the battery dies. Pulling the battery out and putting it back in fixes this.
Is this just a crappy battery or is something up with the phone's charging circuits?
What rom/kernel are you on?
I have the 3500 battery, too, and I'll go from 100% to 90% pretty quickly. Calibrated twice, too. I figure that's just an issue with the nonlinear (or at least different voltage curve trends from 100%-0%) voltage output of the extended battery.
Sent from my SPH-D700 using XDA App
ACS 1.1.0 don't know if that's related though.
What worries me more is the not charging issue.
Sent from my SPH-D700 using XDA App
Have you tried calibrating it and clearing your batt stats in CWM?
Do you BONSAI?
Tried clearing batt stats a couple times... Now when the phone restarts, it thinks that the % is really low even for the STOCK battery...
Been sitting at 16% for 3 hours with use. (was 55% before reboot)
orb360 said:
Tried clearing batt stats a couple times... Now when the phone restarts, it thinks that the % is really low even for the STOCK battery...
Been sitting at 16% for 3 hours with use. (was 55% before reboot)
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What were the conditions when you cleared the stats? You need to either fully charge the battery on and external charger or when the phone is off. Then boot into CWM and clear the stats.
Do you BONSAI?
I bought a new battery today, a Chinese knock-off battery which claims to have a capacity over 2000. I live in Mongolia, so that's basically my only option if I want a replacement battery, since there's basically no postal system here.
When I first put in the battery, it showed a 59% charge. After a few minutes and maybe a reboot, it showed a 20% charge. It consistently drained down to zero, and I'm charging it now.
I've experienced really strange battery drain with the former battery (also a Chinese knock-off) where it loses maybe 10 percent an hour on idle, so I figured the battery needs to be replaced. Is there anything I can do to calibrate it? I have a feeling that the charge is actually more than is being shown, but no way to confirm my suspicions. Am I right just to try to charge it to 100% and discharge it to 0% until the battery life gets better, or is there something else to do? I should mention I've tried resetting the battery stats in CWM with no real effect.
Thanks from Mongolia.
Go into recovery when battery is at 100% and go to advanced then clear battery stats or download battery config for rooted devices and clear battery stats that way.
Nelinski said:
Go into recovery when battery is at 100% and go to advanced then clear battery stats or download battery config for rooted devices and clear battery stats that way.
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Clearing battery stats achieves nothing other than deleting the stats on the what has been using battery power. Battery calibration isn't required on our phones.
duraaraa said:
I bought a new battery today, a Chinese knock-off battery which claims to have a capacity over 2000. I live in Mongolia, so that's basically my only option if I want a replacement battery, since there's basically no postal system here.
When I first put in the battery, it showed a 59% charge. After a few minutes and maybe a reboot, it showed a 20% charge. It consistently drained down to zero, and I'm charging it now.
I've experienced really strange battery drain with the former battery (also a Chinese knock-off) where it loses maybe 10 percent an hour on idle, so I figured the battery needs to be replaced. Is there anything I can do to calibrate it? I have a feeling that the charge is actually more than is being shown, but no way to confirm my suspicions. Am I right just to try to charge it to 100% and discharge it to 0% until the battery life gets better, or is there something else to do? I should mention I've tried resetting the battery stats in CWM with no real effect.
Thanks from Mongolia.
Click to expand...
Click to collapse
if you want to increase battery life for your new battery, charge it fully to 100% whenever you charge it will increase charge storing capacity of the battery
duraaraa said:
I bought a new battery today, a Chinese knock-off battery which claims to have a capacity over 2000. I live in Mongolia, so that's basically my only option if I want a replacement battery, since there's basically no postal system here.
When I first put in the battery, it showed a 59% charge. After a few minutes and maybe a reboot, it showed a 20% charge. It consistently drained down to zero, and I'm charging it now.
I've experienced really strange battery drain with the former battery (also a Chinese knock-off) where it loses maybe 10 percent an hour on idle, so I figured the battery needs to be replaced. Is there anything I can do to calibrate it? I have a feeling that the charge is actually more than is being shown, but no way to confirm my suspicions. Am I right just to try to charge it to 100% and discharge it to 0% until the battery life gets better, or is there something else to do? I should mention I've tried resetting the battery stats in CWM with no real effect.
Thanks from Mongolia.
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Click to collapse
See this post:
http://forum.xda-developers.com/showthread.php?t=1312273
Never, ever I repeat never let your battery drop below around 5%, and always charge it before it reaches zero. I use the Guage Battery widget v3 pro as it is very accurate, but you can also get the free version. You can & should use the free battery calibration tool from the Google play store, simply install it & charge the battery to 100% then run the calibration App. simples
Sent from my GT-I9100 using Tapatalk
Have a Desire Z with an extended Mugen battery. On both CM7 and now Mimicry 1.5 the battery will drain down to 1 or 2% in a fairly linear fashion. The phone will then work fine for quite a few hours more with the battery meter stuck at 1%. Is this an issue with the battery? Or the ROMs?
Most searches for battery calibration bring up mention of removing batterystats.bin....
Charge fully, then drain until it shuts itself off. You are now calibrated.
Authorita said:
Charge fully, then drain until it shuts itself off. You are now calibrated.
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As detailed by Mugen themselves? Done that numerous times and still the same.
Have done a little more digging and think this might be a battery issue, just ordered a new Anker battery to try. When looking at the stats on battery monitor widget the battery hits 1% at 3405mV. 3 hours later with normal usage it's still at 1% and 3405mV.
I recently bought a S4 Mini (i9195) and I noticed it has a decent battery life.. until 5%. When the battery reaches 5% I get a huuuge drain.. it's like, draining to 0% in about 1 minute. And it happend all the time. Whats wrong with the device? :crying:
I'll try that, haven't noticed what happens at 5%.
Im shure mine has 3%/hour battery drain over night so I'll spect from 5% at least one hour at idle
Sent from my GT-I9192 using Tapatalk 4
Doesn't happen to me but I've experienced that with my old phones. Always happens when I charge my phone when it's far from empty and unplug it when it's far from full, multiple times.
Like I used to plug it in whenever I could find a power source so that I can play my games throughout the day. And I usually have to leave halfway for other things so I'll unplug it when it isn't fully charged yet.
Then after a while I noticed that the battery was draining quickly when it was at lower percentages but draining slower at higher percentages.
It slowly became more constant as I learnt to charge it when it was completely dead and unplug it only when it was full. (I bought an external battery pack USB charger to help with this)
I think this calls "memory effect" or?
Lithium batteries do not have memory effects anymore.
If the phone is new, try charging it completely and discharge it completely a few times. If it then still persists, the battery is probably not calibrated right.
The real size of a battery is not as stated on the cover 1900, but varies around it, depending on the manufacturing. Similar to CPUs, that get tested and then categorized for certain speeds.
So could be that you have a less optimal battery and therefore the calibration to 1900 as expected by the system is not right. So when you see 5% you are already much lower in reality.
I am new to Android, so I do not know if there are battery calibration tools out there, but I guess so.
Greetings
Christian
Solved my battery drain by updating google maps to latest version
Sent from my GT-I9195 using xda app-developers app
Nope, the system will just shut down at about 5% to prevent a deep discharge of the battery which is really bad for li-poly/li-ion batteries.
its not that old, maybe 6 months old, about the last 3 times that my battery has nearly fully discharged, its not got all the way to 0% and has been going off at 3% but then when i plug the charger in and turn the tablet back on the battery shows as 0%
i also noticed the other day it was at about 4% battery and i wa son a pool game, the screen started flickering on and off, and then it turned off, not sure if that's just because it was on the very end of the battery, but was still around 4% anyway so should have been ok till 0%?
any ideas if i have something wrong or is it normal?
James
The tablet will shut off once the battery is depleted. Anywhere under 10% is normal. Letting your device run that low is hard on the battery and will reduce its lifespan.
Read this: http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
The battery meter is not even remotely as accurate as you expect it to be. Its just an estimate of battery voltage versus how you are using the device. Don't expect it to be accurate to within a few percent, or even 5-10%.
Heck, I've had some devices show a drop of 20-30% and shutoff. Probably just some metering error, and it didn't happen often. But that tells you how inaccurate the meter can be.
As another mentioned, deep cycles are not good for the long term life of Li ion batteries. Charge fully and frequently.