Really need help with my fast draining phone!

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A month ago I posted this thread: http://forum.xda-developers.com/show....php?t=1650113

And I still cannot fix the problem. I sent the phone back to repair but it didn't help at all! The repair description said that they did a 'software update'. It took about 3 weeks for my phone to return so I don't really want to do it again. Unless I really have to.
I have tried many stuff to fix this problem:

Bought 2 new batteries
Clean ROM install with NVFlash
Installed different basebands and rils
Formatted the batterystats
Tried different kernels and ROMs (custom and official)
Pulled out SIM/SD Card

Please does anybody know a solution for this problem? I really want my phone back!

Originally Posted by IntenseColor

A month ago I posted this thread: http://forum.xda-developers.com/show....php?t=1650113

And I still cannot fix the problem. I sent the phone back to repair but it didn't help at all! The repair description said that they did a 'software update'. It took about 3 weeks for my phone to return so I don't really want to do it again. Unless I really have to.
I have tried many stuff to fix this problem:

Bought 2 new batteries
Clean ROM install with NVFlash
Installed different basebands and rils
Formatted the batterystats
Tried different kernels and ROMs (custom and official)
Pulled out SIM/SD Card

Please does anybody know a solution for this problem? I really want my phone back!

Wow your battery drain (Screenshots from your first thread) is really huge. Let's try to solve that mystery together
But there is a chance that your phone really is faulty after all you tried already.

Please insert the original battery and fully charge it.
I don't use stock roms but think you should flash an official kdz first without any custom kernels. V20q or V20s (maybe with flix tweakpack). DONT use titanium backup etc, leave it stock.

You should install battery monitor widget by 3c to get information on your mV consumption.
In your Screenshot your reception wasn't good, please set it to "2g only" for now (or even consider to disable data totally and check how it behaves with wifi only).

Use your phone normally. How is your battery?


Sent from my LG-P990 using XDA

Thanks for responding.
I have tried to install the latest firmware with the LG update tool and the drainage was about the same. I did not install anything else on the device then.
Currently I am on the latest CM7 kang by temasek and baseband version v20s with 420 ril (also v20s daemon, I don't even know what this is).
I'll try battery monitor widget.
The reception at where I live is not so good even with 2g only. But I don't think that's the case becuase I tested with airplane mode activated and have also removed the SIM card.

Thanks again.

Just wanted to report that battery monitor widget is showing a power consumption of about -130 mA while on standby.
I think this is a very big number. And I think I had about -10 mA before this problem.

Originally Posted by IntenseColor

Thanks for responding.
I have tried to install the latest firmware with the LG update tool and the drainage was about the same. I did not install anything else on the device then.
Currently I am on the latest CM7 kang by temasek and baseband version v20s with 420 ril (also v20s daemon, I don't even know what this is).
I'll try battery monitor widget.
The reception at where I live is not so good even with 2g only. But I don't think that's the case becuase I tested with airplane mode activated and have also removed the SIM card.

Thanks again.

I had the v20s deamon installed too and I also had a pretty huge battery drain.
So my suggestion : remove it (by installing clean rom again).

As Tonyp already mentioned : try to install an original LG rom with it's default BB en RIL (use NVFlash to flash it). Don't use any other kernels or tweaks. Just the default.
Also don't restore anything (for instance with Titanium Backup or other program).

And set your phone to use 2G only, because a bad reception can indeed drain your battery (and fast too !), because it constantly seeks the network. Setting it to 2G only (it's mostly the strongest signal) can avoid battery drains.

And finally try to recalibrate your battery, there are tools available for that in the Google Play store.

Recalibrating the battery is a hoax. At least if you mean to wipe the battery stats (what most tools do). Real recalibrating would be to completely drain the battery (till the 2x turns of - not more! A completely empty li-ion battery would damage it!) and fully charge it again. But that doesn't improve the battery life, it will only improve the battery reading precisness.


Sent from my LG-P990 using XDA

Same results with stock based roms too?

CM roms are battery hungry

Yes, I got the same results on stock ROMs. I tried to 'cleanly' install the v10b firmware via NVFlash without installing else on my phone many times. And the problem still persist.