Replacement Battery Quality SOLVED with CYCLE COUNTS
I am new to this site, but a long time use of the iphone 4 GSM 16GB. I have been using it since launch day in 2010. I have went through 2 devices and 2 sets of batteries. First device I had for 2 years, and had it replaced with my current device at the local apple store under apple care.
The second device, since I use the iphone a lot during my day, I charge it twice daily, even since new. I use the GPS, camera, and surfing a lot. Back in November 2013 I replaced the battery with a "new" one from a shady mobile repair shop. I didn't notice any gains in battery life. I kept using the battery until this month. Because I noticed significant deterioration in battery life.
Therefore I decided to set out on to replace the battery myself using ifixit repair kit.
But before I did, I did my research, and read about li ion batteries and charge cycles. Unfortunately apple doesn't allow us to know the current state of battery unless you jailbreak. I jailbroke my iphone, and installed applications that tell me the battery details.
The battery I had that was only 10 months old had 890 Charge CYCLEs!!! and already lost 30% of its useable capacity, meaning at full charge I was getting only 70% of what the battery originally had in capacity.
This angered me because I paid well over $30 to have it replaced.
I set out on google to read about the quality of ifixit batteries, because people buying batteries from amazon and ebay are having nightmare issues, with batteries failing and having charge cycles over 500.
I couldn't find any information for ifixit batteries. I ordered one anyways.
It came quite fast. I installed it (extremely easy) and ran the battery app.
I am happy to confirm that their battery was actually new, it had 0 charge cycles, and the capacity was showing 99.98% (like 1418 out of the 1420 mAh).
I thought this information might be useful for people who want to make an informed decision regarding iphone battery purchases from this site versus shady mobile repair shops and ebay.
Is this a good question?