Announced September 9th, 2014, this device is Apple's first foray into smart wearables. iFixit's repair manuals are applicable to Apple Watch (steel) and Apple Watch Sport (aluminum).

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Batteries interchangeable between series?

Are Apple watch batteries interchangeable between all the different series? Say I need to replace a 38mm apple watch battery (original), can I use a 38mm battery for series 1 in the original?

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I'm pretty confident that you can use a battery from a Series 1 Watch in an Original Apple Watch. The internals between the Original and the newer Series 1 are almost identical. (The processor was about the only change.) In fact, if you order a replacement battery from ifixit.com, the batteries are listed as being compatible with either Watch. Also, the details about the used OEM batteries listing even says that they are taken from either an Original or a Series 1 Watch.

Apple Watch (38 mm Original and Series 1) Replacement Battery

Apple Watch (38 mm Original and Series 1) OEM Battery

Apple Watch (38 mm Original and Series 1) Replacement Battery Image
Apple Watch (38 mm Original and Series 1) OEM Battery Image

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Sorry no, The original Apple watch uses a different connector system for most everything and that includes the battery. See for your self here:

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Original Battery

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Series 1 & 2 Battery

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Hi,

Is the apple watch series 1 and series 2 batteries interchangeable ?

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