Just received my Seidio 3500 battery and after a days use I have to say i'm very impressed. Up times been about 13 hours and awakes been 2 /12 hours with 78% left. This battery will not die...that's the good news. The bad, yep it is thicker and heavier than stock, I figure I'll use it when I'm in the field and can't get to a charger. I didn't have battery problems and could get at least a full days with moderate use. I recommend it to anyone with battery problems or if you're away from a charger or outlet. Thanks again Seidio for another great product.