Originally Posted by lotus49
While the battery life on most smartphones is pretty poor, rather than have a fat battery and ugly cover, I just carry a spare charged battery. I need to use it about once a week.
Is there any reason why you wouldn't want to do that instead of using an extended battery?
Just buy a spare battery and change batteries if you run out. That's what I did with my S2 and that approach served me well for two years.
I was able to get the Mungen (SP) Battery for my S3 that served me well. I was hoping Mugen or someone else will come out with one where I don't have to swap the covers or constantly change batteries. My Mugen battery gets me about 2 1/2 days verses barely 2 days with the original S3 battery. Its a small difference but it works for me.