Power Leak

@mypants You say that you leave the phone connected to your PC to sync it.
I have had a problem syncing my phone via USB since day 1. I have tried many times to sync that way but nothing but problems. Sometimes the battery will charge properly, other times the battery will become extremely hot and rapidly discharge. No one has any reasonable answers.It charges fine with the wall charger. I've tried to return the phone to Amazon, but they now tell me a replacement won't be available until June 28th.
I can sync using a bluetooth dongle, so I can live with that for now

Not sure I understand what to look for?
I use memaid went into the CPU usage menu, plugged in the USB. The only thing that changed is the repllog file appeared, but has 0% activity, idle processes jump between 96 and 99% of activity.
If I missed something,can you explain further?

Maybe you know what this is for?
In the windows folder, there is an App called "switchUSB". It gives you 2 choices - Microsoft USBfm, which is the one that is checked off and the second, that says "QC composite - DUN, DIAG, NMEA".
I tried enabling the 2nd and when I plugged it into my PC, it said Driver not installed, so that didn't help me out

Ok a couple things of interest to note.  Yesterday I was having the same power issues, barely used the phone early and suffering horrible battery life.  I finally hard reset.  The only thing I installed after HR was SPB shell naked without skins or anything.  My phone made it through the rest of the day without much issue.  

Now something odd, the phone was on the wall charger for about 11 hours and when I woke up the battery was at 98%.  I got ready for work and when I took the phone off the charger 30 mins later it was still at 98%.  Don't know what the issue with that could be.  I prolly should have soft-reset with it on the charger.

This morning when I got to work the battery was down 2% (96% remaining) while installing skyfire, ucbrowser, and s2u2.  I went and installed Resco Explorer and SKTools as well and DotFred Taskmanager.  I am going to leave it alone for awhile and monitor battery usage.  At this point though I think I've found my power leak was coming from a memory leak in a program though.  I am going to take it slow and install a couple things at a time monitoring power consumption and waiting a bit (half-day or so) before installing anything else so I can try to figure out exactly what it is that was zapping my battery.

Try band switching at this post. http://www.lg-expo.com/lg-expo-tips-tricks/disable-3g-and-select-bands/ If you have not done it. It does help some.