I left my XDAIIi for a long weekend and when I came back it had fully discharged - annoying but not the end of the world.
I charged it up and it charged both the main battery and the backup battery (i.e both went from 0% up to 100% over a period of time). I did the initial hard reset install, then recovered my system from the backup copy - all as it should be.
I had cause to reseat the SIM card and to do this I obviously removed the main battery - really the first time since I have owned the unit - about 6 months now.
Re-seating took no more than 20 seconds, I placed the battery back in and switched on. I was suprised to see that it did a soft reset. Is this normal? Can't find it in the manual. If it is normal then what is the point of the backup battery?
If it's not normal - is there a way to test / change the backup battery?
Phil
It ALWAYS does a soft-reset after battery removal/replacement. The backup battery prevents you losing ALL your data apps etc. If it wasn't there, you'd do a hard-reset every time you did anything to the battery.
Nigel
Related
hi.. im new in this site...
i've been using xda 2i for years and i realize that the backup battery always stays at 0%... how can i recharge my backup battery or i must replace the backup battery instead? thanks...
That's a really strange behavior. My backup battery stays always at 100 %. Either your monitoring system / indicator is wrong, or your battery is defect.
Anyway, you can try to figure out and remove your accu pack, wait for several minutes and then put the accu pack back to the device. If all your data is lost and the system is acting like after a hard reset, so the backup battery is really gone.
A backup may be usefull before you start the test.
Hi everyone, well when i charge my battery all the way to 100% its fine, i use the device as an mp3 player as well which in my case brings down the battery 10%, but most of the time my battery meter is not accurate, for example it will say 54 percent but when i restart the phone it will shoot up to 75 or something, it always does that, is there any hardware problems or anything?
Battery Trouble
Hello MimoG3
This may or may not be related, but I remember after restoring from a backup a few months ago and removing the battery prior to this the device battery meter was very inaccurate. After the restore, the battery extremely low warning came up because it thought I had 0% battery. Long story short, after a while I noticed the battery was not seated properly. So I took out the battery, cleaned the contacts, and put it back in, and it worked fine again. Try cleaning all the battery contacts. Google "Clean battery contacts" or something similar if you do not know how to safely clean battery contacts.
Also, although I have not had this problem that your are describing, try posting your rom and rom version, radio, device information, battery s/n if possible, and other device info should it turn out there is a bad batch of batteries or devices.
-Dave
i have noticed when i restart the phone once in a while and when the battery is fully charged it will think its empty and shut off the phone, to fix that i take out the battery and it starts up again. also sometimes it freezes at startup until i take out the battery but that happens when i restart as well.
Leave your phone on playing music until it turns itself off because of low battery. Remove battery 10 seconds, put it back in and turn on again. Repeat until the battery is really empty and the phone turns off less than 5 mins after you turned it on. Plug charger, turn on, leave until fully charged. This should improve accuracy. Avoid removing the battery if not needed.
ive done something similar to that, i turned on the wifi, bluetooth and gps on so that it would drain the battery fast, then when it turned off i turned it on again with all those things off except the GSM Radio, then eventually it shut off once it stopped turning on i charged it all the way. it still didnt help
battery measuring is not really that much of an exact science
only way to tell the % is
when a batt being pulled current from the volts drop
the less juice left in the batt the more it drops
so the device measure the volts
and makes an educated guess how much juice is left
just after a reset the batt could very well perform a bit better
for a few mins voltWise
MimoG3 said:
when it turned off i turned it on again
Click to expand...
Click to collapse
Did you remove the battery? The phone doesn't usually reset the meter if you leave it in.
@rudegar: No, most recent devices including HTC phones don't only use the battery voltage but count how much energy they use / charge to the battery. That usually allows more precise measurement, but can also sceww up if uncalibrated, and is really annoying as it doesn't want to use higher capacity batteries correctly.
Hi guys.
On last Saturday, my phone could not receive the satellite signal for Garmin, then I decided on restart the phone. But the phone will never show the Window Mobile 6.1 screen, it stuck after showing the Xperia screen.
After hard reset, everything was fine until yesterday. There was 16% battery left, then I put it in the drawer and work. After 2 hours, there was a blank screen. I recharged the phone when I got home, and the charging period was as usual.
When the battery was full, I went to shower. After that I took a look at the battery, it was 96%!!!!!! 4% drop within few minutes.
So below are what I suspect.
1. Battery problem.
2. Phone problem.
3. The program that shows battery percentage is not accurate.
4. Something run on the backend that used up too much battery. (But I didn't install any extra program that will run at the backend)
Should I hard reset my phone again? Please help.
Try installing abcpowermeter to see power consumption of your phone, also try installing a taskmanager, that shows CPU ussage for running apps and post results. Also do not charge phone via usb, but with the wallcharger.
I've been reading around and is anyone successful with the sequence of
--Charge Phone while on
--wait until fully charged.
--unplug charger
--turn off device
--charge until fully charged.
--unplug charger
--turn on device
--when phone is completely done rebooting turn off
--plug charger again until full
--turn on device and move on
and how does that relate with the reset battery stats on clockwork mod?
can anyone elaborate D:
I tried that method and i didn't see a difference in battery life. Didn't wipe battery stats through clockwork.
I did it the other day when I first saw the post and I seem to be getting better battery life. Could be a typical placebo effect, but my phone sat on 100% for a couple of hours after doing this (with negligible use during that time, except for my compulsive turning on the screen every few mins to see if the battery had dropped - using Fightspit's Super Circle Battery Mod).
The two slight changes I made from the posted steps:
1. My first step was to wipe the battery stats using ClockworkMod. No special knowledge here, and I have no idea if this was a good idea or a bad idea, but I figured the best way to calibrate the battery gauge would be to start the process with no history. I didn't want to add to the old history, I wanted to start fresh.
2. I did the "unplug the phone, turn it on, when it's completely on, turn it off, plug in the charger, charge with phone off until you get the 'full' message'" part an extra two times. Just because. The first "extra" time, it took a few minutes to get the "full" message. The second extra time, the full message was pretty much instant and I was satisfied. I do not recommend doing what I did, because I have no idea whether it could ruin your battery in the short- or long-term.
Also note that my phone had a 43% charge when I first started this process, I didn't drain it until it turned off like some other calibration processes recommend.
Since I did this, I have just been letting it charge regularly overnight (phone on, plugged in) and it feels like the battery numbers drop more slowly with the same usage pattern.
Hello guys,
I've messed around with OC etc. and I had to take out battery couple of times. After that some of my apps had reseted settings (probably sqlite db corruptions - it happens). Strange thing: after that my battery lasted for 2 days. Before that I was lucky if I got one day on one charge.
Latetly everything went back to normal and no more 2 days without charing.
I didnt installed anything new etc. Maybe market installed some updates - thats all.
Conclusion: something is f*cked up with our phone .;-)
I think it has to do with lg's battery drivers not working well. If you pull the battery (while the phone is running), on next boot the battery level is usually lower. I think that this causes the levels of the battery to be determined again. Normal shutdown looks like it's saving the battery level somewhere instead of determining each boot.
I've noticed one time after a nandroid restore the battery level was the same as when I did the backup. In this instance, I flashed a new rom to try for a couple of hours, then did a nandroid restore. If I remember correctly, it was about 55% when I did the backup, and about 25% just before the restore, afterwards it was back to 55%.
A while again I tried using this method (battery pull) to calibrate the battery. Using the pre #40 cm nightlies, you could boot without the battery in, using the usb charge. The method I used was to charge 100%, shutdown, remove battery, plug in to wall charge which booted the phone and inserted the battery during the bootup animation. After bootup, the battery level dropped to anywhere from about 95% to about 75%.
It certainly looks like to me that the battery isnt getting fully charged each time.
So maybe with your battery pulls you were actually recalibration you battery and getting a full charge, but after a couple of charges, it was back to normal ie not fully charged.