iPhone 4 Battery Replacement
I did my battery today. It was easy. Battery was completely dead when I put it in, so I retried my old one to make sure I didn't mess up the install, then reinstalled the new one. After I plugged it in about 10 minutes, I finally got the charging indicator and 5 minutes after that, it turned on with the charger connected. My original battery was VERY glued in and took a bit of careful prying. It took about 4 hours to get to 100% charge. Very pleased with the outcome so far. I will update if I have any problems, but hopefully not!