10 - 30 minuten
I bough a "new" iPhone 4S from a third party seller. These 64GB 4S models are hard to find new. Turns out the phone wasn't new even though it looked new. The Phone had been activated once before and had probably been sitting on the shelf for 3 years which I'm guessing did a number on the battery. It was acting super funky. It would charge in 30 min then drain on standby over 24 hours. And randomly shut off automatically. And since the phone was out of warranty I opted to keep the phone and do my first iFixit repair.
Got the kit in the mail much faster than I expected. The whole battery replacement took about 20 min. The only snag I ran into was the ribbon cable for the battery took some encouragement to fit. But I finally coaxed it into place. After a full charge the phone has been acting much more normally. It's still not as optimal as I had hoped, but it's way better than it was. I wonder what the shelf life of these replacement batteries are.
Plastic tweezers... or some other kind of non-conductive tiny-grabby-tool would have been helpful. I used metal tweezers and I was paranoid I would scratch a contact or short something or cause a static electric spark to kill something. Oh, and make sure you have plenty of light.