saywhatt

so the thing is i accidentally done the wrong battery calibration and etc. so what i did was just i let the battery drain til it turned off and then charged it to 100% and i deleted the battery bin thingy again (i didnt calibrate it anymore) and now my battery sends wrong readings in my notification bar and the battery widget when hits 40% below.. I have to check the Status in the Settings area.

what do i do? please help me.

PS: i rooted my phone before calibrating it..

D-U-R-X

I did not calibrate before I rooted my Desire HD, but have done since.

This is the advice I was given:

Firstly, download Current Widget - this allows you to see when your battery is no longer drawing power from the charger and then download Battery Calibration (obviously to sort the battery stats).

Have the phone on charge until current widget shows that there is 0mA showing (as in no more power being drawn by the battery) and then use battery calibration to reset stats. Unplug and run the phone down (I do it until the phone actually turns itself off)... from there, you should be good to go... battery shold be calibrated.

I was also told that, each time you flash a new ROM, it's best to re-calibrate the battery.

By the way... I'm not trying to teach my granny to suck eggs, I just thought I'd give you the same advice I was given, in the hope that it helps you out!

Let us know if this sorts your problem!

__________________

saywhatt

thanks.. i got another problem though..

my phone got suddenly stuck in boot loop.. dunno why..
can anyone help me? please? i dont wanna pay to samsung s.center again

D-U-R-X

What did you do to get in to a bootloop?

By rooting, you (usually) void your warrantee... this would mean that you (probably) wouldn't be able to get it fixed for nothing.

Matt31

Did you overclock your cpu?
Sometimes that causes a boot loop......a quick re flash will fix you right up.


Im also try the Battery Calibration app, wonder if it works.
Has any used it before?

D-U-R-X

I have used it... yes - it resets the battery stats, so your phone knows when it's fully charged.

I'd do as I have said in my post above and also download current widget, as this will let you know when your battery is no longer drawing charge... you would be surprised at how long after your phone tells you that it is fully charged that it still draws power for!

Matt31

Well, I did the battery calibration more than a day ago, and i'm still on the same charge! This is amazing to say the least....before, I would never get more than 8 or 9 his out if it...I'm well over 30 now

D-U-R-X

Good to know that it sounds like it's done some good. I felt the same, that the battery life had improved, but then I've seen this in the Desire HD device forum...

So, who knows whether or not it actually does anything.

Matt31

No way, I can guarantee that it works.

For the longest time, my batteries have had to be charged every day when I got home for work, so it didnt die on my while I was sleeping.

I charged my battery full, used Battery Calibration and yesterday I got 30+ hours out of my phone, instead of 8 or 9 hours.

This can't be a placebo effect!

D-U-R-X

Was just passing on the info I'd seen in my device sub-forum... like I said, who knows if it makes any difference. I'm gonna stop calibrating each time I flash a new ROM and see if I notice any detrimental effect!

Matt31

I know, you are just the messenger.........but I just can't believe it.

I swear, I would go to work around 2pm with 100% battery, and come home at about 10pm with about 30-40%.
At work, I would use Kakao talk a little bit, and the dictionary. That is it!


Today, I went to work at 2pm with about 90% battery and now (almost 11pm) with 65%......still draining faster than I think it should, seeing how I hardly use the phone at work.....but thats a 30-40% turn around.

D-U-R-X

Glad you're sorted... hope your battery plays nicely from now on!

Matt31

Battery still seems pretty sweet for now.

Question though, I know that wifi uses the battery more, but when I am at work and at home, isnt it better to use the wifi?
I am on a data plan, but dont usually come close to the 500MB limit.

I want to limit the connectivity, but I also communicate mostly through instant messaging, so I need to be connected to something.....I dont know what to do

D-U-R-X

I leave WIFI on ALL the time, unless I know I'm going to be out of WIFI reception for a long time. I connect to WIFI @ home and @ work... only tend to turn it off when I go out on a night out and I've never really had an issue with my battery.

Hope this helps you decide what to do!

Matt31

yah, usually what I do as well.....guess Ill keep on keeping on
cheers

adzidek

don't know if this was mentioned already, but are you making sure your phone is at 100% before making any system changes (kernel, modem, ROM, etc)?

Matt31

I wasnt before, that is why I did the Battery Calibration.
Made sure it was charged to 100% (even though it would drop right down to 94% after) and made sure it stayed at 100% when I unplugged it.

Then ran the app.......all is good now.