I don't know why, but I have 2 extended batteries. They both die as fast as the stock battery and they did work in the beginning when I first got them. My charge doesn't even go up anymore when charging. It will get stuck on a percent for example 23% and it will stay there and not go up to 100%. I haven't seen my phone up to 100% in months. It will stay on that certain number for a long time until after then it will just simply die fast. I want my phone to last me as long as everyone else says they have their phones last. Heck even 15 hours would be okay. Anything but just a mere 3 hours with extended battery, because that is unacceptable especially for extended. What can I do to get my phone to last as long as it should and is there anything I can do to stop the percentage from getting stuck so it can finally go back to 100% after charging? Thank you.