Hello
Is it normal that the phone shut downs at 3488mV ? I've read that the battery discharges at 3200 or 3220 mV, so i'm kind of intrigued
About 3200 mV is the absolute lowest voltage below which a Li-Ion battery should never go, but it can decide to shut down even before that. It all depends on the usage pattern. I'd say this is nothing out of the ordinary.
atrix's hw/sw roms and kernels are not good in reading real voltage values.
What I know i batteries work 4200mv-3580mv
below 3,6 volt is 0% of the battery. I may be wrong but.
I have original and 3rd party batteries. 3rd party one draind to 1% in 5 hours and lives about 10 hours while showing 1%.
whenever I pull out and pull in battery, the percentage changes : 40% > turn off device and pull put battery > pull battery in > boot device > it shows over 40%
Related
Hi,
The battery voltage (located in: CM7 spare parts >battery information) on my galaxy sii is reading between 3646 and 3648. First, I'm not sure if that is low, or if it is necessarily good or bad. I just can't seem to find an answer for this anywhere on the Internet, so I made started this thread.
Second, I was wondering what everyone else's battery voltage reading was on their galaxy s2.
Oh, and I also just did a battery calibration. ... If you didn't watch the video, Then I'll fill you in. I wiped my battery stats through recovery mode, then I let my phone drain its battery. BUT, in the process, my phone crashed (the screen froze) at around 1-5%. So I left it overnight and it eventually died. Then I plugged it in and left it till it fully charged to 100%. SO i was wondering if that could have messed up my battery voltage (the crash)?
Sorry if this was hard to understand... But I hope someone out there can help me with battery voltages! ><
J
Never drain battery to zero. Read plenty of users with different phones and ROM having issues in the past after draining to zero.
Should be approx 4200mV at 100% (approx 3500mV at zero).
1. I just drain to 1-2% (>3510mV) to be safe.
2. Charge uninterrupted to 100% and mA stops actual charging at approx 4200mV. As you will see, battery continues to charge for a time (mV increases) after 100% is reached.
3. Immediately delete battery stats. I use app Battery Monitor Widget to monitor current mA & delete without restarting, give SU permission (phone uses power to boot into CWM, and therefore not accurate at time of delete with this method).
4. Immediately unplug.
Done.
Sent from my GT-I9100 using xda premium
i hv bnattery problem for 3-4 month
still cannot solve the battery problem
i think i have done some wrong steps in the battery calibration
when my battery is fully charged in a battery changer(charger for battery only)
when i put the battery into the phone, it's shows that there is about 30% of battery
when i further use the battery, the battery level rise (without charging!) to 100 then drop to 0 and turn off
the time that the phone can use from 100% to 0% is quite short
when every time after charging, the battery level is 100%
it won't charge to the "real" full battery level, ie ~30% (SORRY FOR MY POOR ENGLISH)
how should i calibrate?
i used the battery calibration app, but no use.
Charge to 100 then use battery calibrator from market very simple
Sent from my SCH-I500 using XDA
If your recovery is ClockWorkMod, then there is an option to "Clear Battery Stats". Just try to see whether it helps.
~Cheers
It's a few days late, but battery calibration is unnecessary on modern batteries (Lithium). All the apps do is delete a small file that records power usage, they do not affect battery life in any way. This file is cleared automatically (by the system) when the phone is fully charged.
Further, full charge/discharge cycles will actually have a net harmful effect on your battery life. A lithium ion battery has a limited number of charge/discharge cycles it can sustain before becoming more effective at being a paperweight than powering anything. The full cycles you are doing simply eat into the battery's overall life expectancy.
For instance, it is better to charge from 50% to 100% multiple times than it is to go from 0 to 100 once.
Personally, I would just replace the battery.
I would suggest u to calibrate the battery in the clockworkmod recovery too
if this wont has any effect take into consideration that your battery might be damaged
i faced this problem one year ago with a galaxy spica the battery was shown as full and after a restart it was almost empty and calibrating the battery did not had any effect
so have a try and report afterwards
If, after rooting or more likely that case after flashing a new rom, you often have battery reporting errors (as mentioned above), and re-calibrating the battery along with some steps I will outline for you below will ensure that your battery is getting a full charge, and the battery reporting accuracy is right on. I run my device in performance mode all the time, and with a CPU overclock of 1.25GHz and various tweaks, I have about a day an a half to a day and a quarter of full runtime from my battery. This is with moderate to heavy usage (calls, emailing, text, gaming, web browsing, etc.) so you should have no problems getting acceptable battery performance after following these steps:
1. Take the case off your device (one of the latter steps involves taking the battery out from the phone while it's plugged in. Make sure your case won't stand in the way.)
2. Install Battery Calibration app from the market
3. Plug in your device to charge while it's on, wait till it gets to a 100%
4. When the charge is 100%, open the BatteryCalibration app and lookup what the charge is in MV while at 100%. Write it down.
My Atrix 2 was showing ~3400MV while at 100%, which is definitely not the maximum capacity.
5. Discharge your device completely until it shuts off.
A good way of doing this quickly is by turning on wifi, and a video player.
6. Without turning on the phone plug it into a wall charger and let it get to 100%
7. When it's at 100%, without unplugging it from the wall charger, take off the battery cover, and take the battery out.
Your phone will "reboot" and show a Missing Battery icon.
8. Without unplugging the phone from the wall charger or turning it on, put the battery back in and wait until the phone recognizes the battery.
9. Your battery should now be recognized by the phone, and showing a charge % significantly lower than 100%.
Mine showed only 5%.
10. Let it sit there charging for 2-3 hours (or more).
My phone wouldn't charge past 10%, but yours might. The numbers don't matter much as the phone is definitely getting additional charge that could have been lost while flashing ROMs, etc.
11. After 2-3 hours (or more), turn the phone on while holding the volume down button and get into CWM.
Do not disconnect it from the charger still!
12. Wipe battery stats in CWM, reboot.
Do not disconnect it from the charger still!
13. When the phone turns on, go into Battery Calibration app again and look up your MV numbers -if you were like me, they should be significantly higher than before. After this whole process I had 4351MV at 100%, comparing to 3400MV before calibration.
Do not disconnect it from the charger still!
14. Before going to sleep - Install Watchdog Task Manager Lite from the market. Go into it's preferences, set CPU threshhold to 20%, check "Include phone processes", check "Monitor phone processes", check "Display all phone processes", set system CPU threshhold to 20% as well.
Do not disconnect it from the charger still!
15. Make sure your wifi and data connections are off. Now finally unplug the phone from the charger.
Go to bed, let your phone sleep too.
16. Success! Next morning check where your battery % is at and if you followed the instructions correctly / got lucky like me, your battery life should be 90% or more.
I went to bed with 98% and woke up to 94%. So, I consider this mission a success.
Sent from my Atari Falcon030
How do you override the default android manufacturer info on battery capacity?
E.g
I'm using Xperia C5503, rooted of course. Original battery comes with 2300mAh. I've got a new fatty 3rd party 3400mAh but the Android gauge simply can't get the correct reading of the new battery capacity. I tried setting the new capacity inside of 3C battery monitor pro but seems it's only for internal comparison, calibration also doesn't help probably because it's only meant to calibrate original 2300mAh not anything more or less.
So the result is reading stuck at 1% lasting for 10 or more hours, it's really frustrating. Any ideas?
Well, to reply to myself - I found it.
The solution to 'fix the gauge' with extended battery is to not let it drain to 0% but instead to drain only to the low battery indicator! I used 10% remaining indicator mark (didn't tried with 15% as suggested @batteryuniversity or 5% when battery saving mode switches on), then the crucial point is to switch the phone off and let it recharge in powered off mode till 100%. Repeat the procedure 2-3 times and it should be good.
The charging circuitry needs to learn what the max and min are, so it can then stretch its range to fit the battery's new and much larger capacity.
As a result now I have 3400mAh that holds around 3d6h with more than 8h of screen time. Hope that helps to someone too.
Hi, I've been having problems recently with my ZTE Blade Spark (Z971). I only have about 3-4 hours of battery life with active use (browsing the web or watching videos), and this is with screen brightness turned to the lowest, airplane mode on (though wifi is on), etc. I've been using this phone for about 2 years, and it was much better before. The battery is supposed to be over 3000 mAh, but according to AccuBattery, my phone is only charging to about a third of this capacity. Also, when I tried to calibrate my battery, I noticed that when I ran down my battery to 0%, and plugged it in, the on screen indicator immediately showed ~30%. However, when I immediately unplugged it and tried to turn the phone on, it wouldn't turn on. Calibration didn't really work either. Is there anything I can do to fix this?
Two years of use will usually kill 30-50% of the battery capacity.
Accubattery can tell you the estimated capacity on the "Health" tab.
It may be time to change the battery.
But this is a lot worse than 30-50%, according to AccuBattery, im only getting a capacity of about 1000 mAh, which means the battery lost around 2/3rd's of its capacity. Is there anything I can do to fix this, or do I have to replace the battery at this point.
Couple of weeks ago I changed battery on my phone and everything was fine until phone was at 20 percent and thats when it turns off it is happening since I replaced battery and since then I found that battery is actually 5000mah instead of 4000mah on orginal battery that came with phone. So I tought that maybe phone turns off because it thinks it is on 0 percent charge because the phone is set to use 4000mah battery and I was wondering If there is any way to modify capacity to match with the new battery and maybe that way stop the issue
I doubt it's 5000 mAh unless it's physically larger than the original or a different battery type.
Allow it to run till auto shutdown then charge to 100% three times.
Is your SOT good now? That's what really matters. If so I wouldn't worry too much about it. 20% is a good low cut off voltage as it reduces the strain on the battery.
Check the cell's full charge and auto shutdown voltages. Is the battery itself shutting down prematurely?
blackhawk said:
I doubt it's 5000 mAh unless it's physically larger than the original or a different battery type.
Allow it to run till auto shutdown then charge to 100% three times.
Is your SOT good now? That's what really matters. If so I wouldn't worry too much about it. 20% is a good low cut off voltage as it reduces the strain on the battery.
Check the cell's full charge and auto shutdown voltages. Is the battery itself shutting down prematurely?
Click to expand...
Click to collapse
It is different type of battery than original new one is dual cell and SOT is better now also did charge it from shutdown to 100 three time already full charge when left charging overnight showed capacity of little less than 5000 but dont know how to check autoshutdown voltage and if battery is shutting down prematurely
Dzonins said:
It is different type of battery than original new one is dual cell and SOT is better now also did charge it from shutdown to 100 three time already full charge when left charging overnight showed capacity of little less than 5000 but dont know how to check autoshutdown voltage and if battery is shutting down prematurely
Click to expand...
Click to collapse
Best to always go with OEM or as close a match as you can. No reason a dual cell parallel connected be superior to a single cell unless it's a different battery type. That could throw off the preset power controller values. An interesting mystery.
If your SOT is the same or better than the original battery when new I wouldn't worry about it. Especially if it causes no operational issues. Battery voltage can be seen with various 3rd party apps like DevChek and Accubattery.
blackhawk said:
Best to always go with OEM or as close a match as you can. No reason a dual cell parallel connected be superior to a single cell unless it's a different battery type. That could throw off the preset power controller values. An interesting mystery.
If your SOT is the same or better than the original battery when new I wouldn't worry about it. Especially if it causes no operational issues. Battery voltage can be seen with various 3rd party apps like DevChek and Accubattery.
Click to expand...
Click to collapse
Yeah but sadly there were no single cell in the shop and voltage is 3.8 but i find it little frustrating when it turns off 20 percent instead of 1 it just a little inconvenience