I just bought the Hyperion extended battery and wall charger for the S3. I had a little trouble getting it to charge but once I figured out how to position the prongs it looked like it was charging. Last night I had it charging for a few hours and it seemed to be taking a very long time to finish so I put it in my phone to see what percentage it was and it was only around 80%. I took it off the charger because I didn't want it to be on there all night. Then this afternoon I tried it again. I had it on the charger for 5 hours. The light changed from a pink/purple to a blue which from what I read means it is finished charging. I put it in my phone and it says 87%. Am I doing something wrong? Or could it be the battery or charger? I let it finish charging in my phone and it says 100% but the LED light is still read and the icon still says its charging. Will it not tell me when its done charging like with the samsung battery?