I'm reading some guides and posts about battery calibration...
I'm trying to do it with battery calibration apk, but I can't understand when battery is really full even if I use current widget (it stucks at 10mv, it does not come down to 0).
how do you calibrate?
Do wipe status as long as u riched this value as a maximum. .. restart. .. let it with out charging till it gets to 1% then charge it again till 100% do that a couple of times ur battery should be calibrated for good; )
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To know when its fully charged you need to be watching ma not mv. As ma is the flow of electricity that your battery is currently receiving, as long as your phone is on it will not hit 0 as your phone will still be consuming battery so it will always sit between 10 and 20ma when fully charged. As long as your happy its sat around that mark for a few minutes then its charged. But best way to calibrate in my opinion, is to just discharge to 5% and charge overnight. Wiping battery stats does nothing as your phone creates a new battery stats file on its own after every full charge and battery stats.bin only contains information of what's been using your battery like in the settings menu. This has been confirmed on xda portal by a Google software engineer.
Your phone is clever enough to figure out what charge your battery has by measuring amps and volts once its been discharged and charged a couple times as by then it will have a established the minimum and maximum mv your battery can hold and battery stats file does not hold this information.
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Second day with the battery. I ran it down today to the point where it shut off and wouldn't turn on. I charged it with the phone off for about 30 minutes and turned it back on. The charge was 54%. Did it really charge that fast?
Sent from my HTC Sensation 4G using Tapatalk
I just checked mine and it shows that over the last 20 minutes mine has gone from 1-99% & that's just ridiculous.
Also it seems that even after 2.5 hours of charging with the phone off (first two times with the anker) it still doesn't turn the led to green
sent from HTC Sensation
Same issue..
I have the same issue...ran Anker battery down and recharged for 5 minutes, battery widget showed 54% charge, the System Returned charge was like 5% so there is an obvious disconnect there. I get a green light if I charge for 3+ hours, just left it charging at work. Until we get the Sensation rooted and can reset the battery stats, this probably will remain an issue.
I guess you can temp root it and reset the battery stats but I'll wait for perm root.
I read somewhere in this forum that you have to configure the phone to somedegree to show the correct battery status, no idea how though
unixman2000 said:
I have the same issue...ran Anker battery down and recharged for 5 minutes, battery widget showed 54% charge, the System Returned charge was like 5% so there is an obvious disconnect there. I get a green light if I charge for 3+ hours, just left it charging at work. Until we get the Sensation rooted and can reset the battery stats, this probably will remain an issue.
I guess you can temp root it and reset the battery stats but I'll wait for perm root.
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My Anker should be here in a few days. As you suggested, you guys just might need to reset the battery stats. So you'll know, I used a battery calibration tool and it worked great under temp root. With stock battery, my % would spike pretty quick one way or another....it did help give me more steady readings. No worries there....
I have a similar issue with the stock battery, if I'm charging and I restart it the battery % jumps.
Just charged up my new anker yesterday for about 9 hours. Popped it in this morning. I will do three full overnight charges and full dicharges and report back. My chichitec got the same conditioning and its lasting about 25 hours for me. We will see. Got this thing for 9.50 so it won't be the end of the world. Seems good so far. At 99% and had it off the charger for three hours. Phone call and some email and xda.
Once we get root ill be wiping the battery stats for sure though.
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unixman2000 said:
I have the same issue...ran Anker battery down and recharged for 5 minutes, battery widget showed 54% charge, the System Returned charge was like 5% so there is an obvious disconnect there. I get a green light if I charge for 3+ hours, just left it charging at work. Until we get the Sensation rooted and can reset the battery stats, this probably will remain an issue.
I guess you can temp root it and reset the battery stats but I'll wait for perm root.
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Click to collapse
Use battery calibration app it wipes stats.
Sent from my HTC Sensation 4G using XDA Premium App
Hoggles said:
My Anker should be here in a few days. As you suggested, you guys just might need to reset the battery stats. So you'll know, I used a battery calibration tool and it worked great under temp root. With stock battery, my % would spike pretty quick one way or another....it did help give me more steady readings. No worries there....
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Click to collapse
care to walk me through how to do this (not the temp root) so I can reset my battery stats?
I'm having this issue with my Chichitech battery. There's no damn way it's at 99% after letting it charge from 0% 3 hours ago.
This happened twice today..
For e.g: If my battery is showing 15% and then i restart my phone it suddenly shows 50% remaining..
Am using Battery Indicator to show me in % how much is remaining (though even the htc battery shows the difference in this case)
Any idea why is this happening and how to solve this??
Oh and how to stop the: Show Me app?? Keeps restarting and sucking my battery..
Could someone please help me out here with this weird problem??
It keeps happening everytime i restart my Sensation..
Try wiping your battery stats from CWM.Then charge battery fully>drain fully>then charge again it should be calibrated. oh and use startup cleaner in the market.
arturohernandez said:
Try wiping your battery stats from CWM.Then charge battery fully>drain fully>then charge again it should be calibrated. oh and use startup cleaner in the market.
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Its a 1 day old Sensation.. Havent rooted it yet..
I saw the same with my mine. I allowed the battery to drain until the phone shut off and recharged over night to 100%. I did that for a few cycles and mine seems fine now.
The battery % indicators only show what the phone software *thinks* it currently is.
The Sensation battery ranges from approx 4200mV (full) to 3000mV (empty).
The problem is sometimes the phone thinks those numbers are different. E.g. when you turn on your phone for the very first time, or flash a new ROM, if your battery was half full at 3700mV the phone would then think that was the 100% level (why they say charge a battery fully for a long time before turning your phone on for the first time).
This leads to various funnies such as a battery seemingly staying full for ages (the phone thinks 100% is much less than 4200mV so until you drop to the phones level your battery %age doesn't go down), and seemingly rapid drains where you end up with less than 10% left - but probably find in reality if you left it your battery would go on for ages at 0%.
Over time it learns, but best to wipe your stats after a long charge so it knows that 4200mV is 100%, and then don't charge your phone again until it physically runs out of juice so it knows what is 0%.
Another useful tip is to install the free BatteryLife widget from CurveFish from the market. That shows you the current voltage level as well as %age, so armed with the knowledge that full = approx 4200mV and empty = approx 3000mV you get an exact idea of how much you have left.
Mine does the same thing even draining/charging for few cycles
Sent from my HTC Sensation Z710e using XDA App
chrisw99 said:
The battery % indicators only show what the phone software *thinks* it currently is.
The Sensation battery ranges from approx 4200mV (full) to 3000mV (empty).
The problem is sometimes the phone thinks those numbers are different. E.g. when you turn on your phone for the very first time, or flash a new ROM, if your battery was half full at 3700mV the phone would then think that was the 100% level (why they say charge a battery fully for a long time before turning your phone on for the first time).
This leads to various funnies such as a battery seemingly staying full for ages (the phone thinks 100% is much less than 4200mV so until you drop to the phones level your battery %age doesn't go down), and seemingly rapid drains where you end up with less than 10% left - but probably find in reality if you left it your battery would go on for ages at 0%.
Over time it learns, but best to wipe your stats after a long charge so it knows that 4200mV is 100%, and then don't charge your phone again until it physically runs out of juice so it knows what is 0%.
Another useful tip is to install the free BatteryLife widget from CurveFish from the market. That shows you the current voltage level as well as %age, so armed with the knowledge that full = approx 4200mV and empty = approx 3000mV you get an exact idea of how much you have left.
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Yeah... I went to sleep with 100% charged and when i woke up it was yet 100% charged.. And when i check the battery stats it shows 0s but i was asleep for 8 hours.. Any way to solve this on an unrooted phone?
I had the same problem today too! Thought my battery was kicking ass...turns out it was 18% when I restarted my phone
sent from my s-off sensation!
byrdman164 said:
I had the same problem today too! Thought my battery was kicking ass...turns out it was 18% when I restarted my phone
sent from my s-off sensation!
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What did you do about it?
Anyone know what to do about this to an unrooted phone??
Or is this a defective piece and i should get a replacement??
Mines has done the same but I haven't had the chance to calibrate it yet to know if that'll help. It has helped on previous phones. I don't think your device is defective though.
Aspeds2989 said:
Mines has done the same but I haven't had the chance to calibrate it yet to know if that'll help. It has helped on previous phones. I don't think your device is defective though.
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Click to collapse
How do you calibrate an unrooted device??
I think it calibrates itself after a few charge/discharge cycles. Always charge it a lot longer than when the green light comes on (because if the phone thinks the 100% level is a lot lower than it should be, that green light may come on early), and for the first couple of charges let it dry out rather than topping up.
And install that BatteryLife widget from CurveFish, then you can look at the voltage. 4200mV = full, 3000mv = empty, regardless of what your battery %age says. Mine currently says 51% and 3753mV.
Having the same problem here, restarted my phone afew times now and the battery % keeps going up, then dropping rapidly! :s
Sent from my HTC Sensation Z710e using XDA Premium App
Why does my Desire S take more than 2 hours to charge from 75% to 100%?
It gets to 75% quick enough...
Use some battery calibration tool from the Market once at 100 %. It should fix this
I have this exact same problem and have tried calibrating, charges to 70-80% really quickly then takes ages to charge every one per cent after that and battery monitor widget says I'm on ~4200mv already. Maybe the calibration isn't working but I've tried the calibration app and the deleting stats in recovery method. Not sure what next.
Sorry for partial thread hijack!!
Sent from my HTC Desire S using xda premium
Did u check
could be a problem with your charger? or power supply
Thanks for the info guys, I am not rooted, can I still wipe battery stats?
Also some Google engineer posted that wiping battery stats doesn't help.
I use my blackberry curve charger with desire S, may be I will try to use official charger....
Will post the time it takes once I have the stats...
Swyped from my Desire S
It can be your Battery issue? Still under warranty? get it replaced xD
sometimes the charger you are using isnt made to charge the battery. meaning if you are charging thru a different charger it might take longer. or it can be that your battery is weak if the 75% gets chrrged quick
Stats
Stats collected using HTC Desire S charger...
Checkpoint Time Duration Comments
Start Charging 4:18:33
70% at 5:43:41 1:25:08 7% to 70%
80% at 6:45:40 1:01:59 70% to 80%
90% at 8:13:11 1:27:31 80% to 90%
100% at 8:45:11 0:32:00 90% to 100
No issues like that. I suspect your system is reading the wrong stats.
Mime takes around 2 and a half hours to charge from a near flat battery.
Sent from my HTC Desire S using xda premium
suku_patel_22 any luck in resolving ur issue? or is it a faulty charger/battery? now is about 2.30am, started charging my phone since around 10/10.30pm. Had 2 htc charger, both giving me the same charge rate(coincidence?). Gonna try charging using usb via computer tomorrow to determine is it the charger that is at fault(if it charged faster on the computer).
-----------------(edit 1)-----------------
been reading, one post( i know shouldn't have stop searching after see-ing the 1st post that pop up in google) someone mention it is a rom related problem? but like many post in q&a the op just disappears.
When I get to about 10% left, the phone suddenly says that there's 1% left, and turns off. Im on ARHD with faux 004. Tried the 005, but same problem there. The problem happens with both the Anker 1900 and EVO 3D battery, so its not the battery that's failed.
Tnx guys!
Sent from my HTC Sensation XE with Beats Audio using XDA Premium App
Yeah I have that issue too.. The thing is battery is not properly calibrated.. Also you can see that once you charge your device with that 1% left within 2 minutes you'll see that battery is 12-15 % charged.. Which is not possible
Also once you got 100% you'll have 100% even after 1 hour of usage.. That's how it works in my case with anker battery
sent from my blazing fast pyramid through sonic waves
You need to properly calibrate the battery. To do this go to the play store and download an app called "current widget". This is a widget that will tell you the physical mah values of your battery, in other words, how much juice you have left when your phone is not charging. Make a widget in your home screen and put the phone to charge, when its plugged in the widget will tell you how much mah of charge is needed to be 100 % full. Do not disconnect the phone when the led light turns green as it is not yet fully charged. You can see that when the light turns green that the mah values have not reached "0" So when the mah values reach to "0" or somewhere near 0 (<10), your phone is 100% charged. At this time, with the phone still plugged in go to the recovery menu or another app that can "wipe the battery stats" and reboot the phone. Your battery is now successfully calibrated and should fix your battery % issues.
Yeah, same as me then. But the battery is calibrated as oneonesix says, so its a bit wierd.
Sent from my HTC Sensation XE with Beats Audio using XDA Premium App
My battery has been acting funny lately. Some nights I go to bed with the battery at 100% and when I wake up it's still at 100%. Other nights it loses 10-15% (in about 9 hours). I don't have anything running in the background that I'm aware of that would cause such a discrepancy. A couple nights ago the battery lost 10-12% overnight with the phone turned off! Still the phone was apparently awake all night. How is that possible?
I'm too lazy right now to post a screenshot since xda only accepts urls.
The same here after flashing a new custom rom.
After turning on the phone and making this screenshot percentage immediately went down for 10 to 15 %.
You can check things like that pretty good with apps like Battery Monitor Widget.
Did both of you try to recalibrate the battery?
Do a full cycle charge to 100% use it till 10% then wipe battery stats and charge phone to 100 again
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k1llacanon said:
Do a full cycle charge to 100% use it till 10% then wipe battery stats and charge phone to 100 again
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Why would you only go down to 10? Might as well drain the battery completely. It's not going to damage anything unless you let it sit around dead for weeks, possibly even months.
It's never good to completely drain a lion battery
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k1llacanon said:
It's never good to completely drain a lion battery
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Actually, for a proper cell calibration, it is best to drain the battery completely. Many agree and I have never heard a dev say that draining it dead hurts the battery. It is essential for each cell to be empty in order to properly and fully charge a li-ion battery (without this, % figures will be non-calibrated over time). Just like it is of good practice to let the device charge and extra hour or so once the indicator light turns green (to ensure 100% after trickle mode).
Rule 1: Battery calibration does absolutely nothing. Deleting battery stats will never, ever do a single thing to help your phone's battery calibration.
Rule 2: Standby drain is almost always because of partial wakelock or kernel wakelock. Install Betterbatterystats to figure out what the issue is.
Rule 3: If your phone is in a good reception area and still experiences heavy standby drain, charge the phone until it reaches max voltage (4.2 or 4.3), then use it until it shuts off, then go to hboot until it shuts off, then charge to full again, preferably with the phone off. Wait about an hour after you first see the green light to turn it on.
After that, enjoy. If you still have issues, I would suggest backing up everything and attempting an ruu flash with the battery at 100%.
I failed to mention it, but I haven't rooted or installed a custom rom.
I'll try better battery stats to see what I can find out with that.