I cant help it but wonder if the L521 battery is really that good, do I have the right setting or I'm I just lucky? I say so because my phone is showing some amazingly good battery times. I charge it before bed and take it off from charger and set it on battery save mode since I don't need updates when sleeping. When I wake up the meter shows 99% or a couple of times even 100%. And then I take it off battery save and start using it normally as I usually do and by that I mean several calls, web browsing and some other apps all while doing background updates. By around noon it still about 80%. I dont want to be technical here but I know a phone with good battery when I use one. Before buying this phone I read all kinds of negative reviews about how terrible the L521 battery is and honestly I was concerned. But now that I am using it in real times I must say that I am very happy with the kind of result I am getting right now (might change I dont know) and wonder what other people are getting. Maybe its because I dont use it to play games or spend hours watching videos.