Do you guys take around extra batteries?? Personally I would have them in long workdays or travel. The last OEM battery completely worn out recently so I was looking for a replacement battery for my Samsung Galaxy S3 and picked up a new one(3500mah) from MPJ after some extensive research on the google. The capacity seems to be a little more than the stock battery, which is about what I expected - certainly acceptable given this price. I ordered my previous OEM batteries from amzo but it will be pretty iffy when buying non OEM batteries on it, so I got this one from official web.