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The problem: I followed the advice of a page published by CNet on the internet on how to replace your for iPhone 4S battery for $8. The suggestion was go on eBay, save money. I then followed the video instructions linked to in that article on how to do the battery swap.
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Actually the 1st replacement went as smoothly as dealing with screws that are maybe 1/64th of an inch with the tools that were not magnetized. However when I checked the battery with an app that reports the condition the supposedly new 2680mAH battery had 308 load cycles and showed a maximum of capacity of 1429mAH. And I found the replacement held it's charge for a shorter time than my iPhone's 2.5 year old battery.
I emailed the company. They did come up with a full refund asking I not give them any negative reviews on eBay. Then I went looking on DuckDuckGo and found iFixIt's site.
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Advice: save yourself the extra hassle of replacing a cheap replacement. Take a look at the pictures I've provided. ($8. battery on left; iFixIt battery on right.) The $8. replacement was near the end of it's life cycle. The iFixIt replacement had only one load cycle which results from testing as a new battery should. And the tools were magnetized which aided tremendously.
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