So far have had the phone for 3 days I am a moderate user texting and Twitter mostly along with taking pictures here is my battery life since last charge
I generally put my phone on WiFi at home and in the office. Typically, my battery utilities will estimate a 7-12 day runtime unless I start cranking on one of the games I've got installed on there.
Yes, WiFi is much easier on battery than HSPA or LTE. Still, that's amazing compared to my HTC One X, which would usually estimate no more than a single day, and generally less than that, in the same conditions.
I had AMAZING battery life with this phone while I had it as well.
I was able to go 2 days on one charge. the LG OGP is an awesome device.
I may have went back to iPhone, but I do plan to rebuy this phone as a 2nd device. I loved it.