Watch out for ebay sellers. Many are selling used batteries as new!
10 - 30 minuten
The original battery in the phone would only last a few hours without having to charge it and the phone would often shut down at 30% battery left so a new battery was needed. I purchased one from an Ebay seller with a good rating stating in the listing that the battery was new, upon receiving the battery I noticed glue marks where the battery was previously installed in a phone. I continued with the install anyways. Upon finishing the install I completely charged the phone and immediately after unplugging it from the charger the phone shut down. It would do this over and over unless kept plugged in. I finally ran a test on the battery to view the charge cycles and found that it had 42 charge cycles on it. This is the point that I realized there was no way this was a new battery and immediately removed it and started the return procedure with the seller. Fortunately I found IFIXIT and they had stellar customer reviews in iphone batteries so I decided to give them a try.
Upon receiving the order from IFIXIT I was happy to see they shipped the battery and repair tools in a nice professional box made specifically to protect the items being shipped. So I unpacked the battery and tools and began the repair which was very simple and took about 5 minutes. This time I ran the battery charge test immediately to find the battery had only 1 charge cycle on it which is normal for a new battery as the manufacturer tests the new stock before shipping to the distributor. Now my phone is as good as new and the battery easily lasts all day with normal use like it used to.
Advice yes... Be careful purchasing batteries from other sellers as many dishonest sellers are selling used batteries as new. I'm happy to say that IFIXIT isn't one of them and I will purchase parts from them again (if needed) in the future.