I replaced a swollen battery in my iPhone 5 with an iFixit battery. The phone worked fine for several months until the replacement battery swelled. Any idea why this happened?
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These are two most likely reasons:
- The batteries are from a bad batch from the supplier
- The charging cable or charger you are using is of cheap quality (no-name brand / not original).
These can actually damage the battery and cause issues like this if the power coming from the charger / cable is not stable / clean.
The charging cables (that are MFi certified) have a chip in them for surge protection to protect against power surges and to avoid the battery from bloating.
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Thanks for your prompt answer. My question should have included the information that the iFixit battery replaced a three year old one and that I am using an Apple cable and and charger.
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