Chosen Solution
Will an iPhone 6 battery work on a iPhone 6s? (Same for 6S+ and 6+) Will an iPhone 5s battery work on a iPhone 5c? Just curious as to what people’s answers would be here.
5s battery is compatible with 5c, a seller told me, and for 6S and 6 here is the blog which explained more detailed information maybe you can check Exchangeable Battery for iPhone 6S+/6+, iPhone 6S/6?
iPhone 5C and 5S are compatible with each other if I remember correctly (rarely they can have APN issues, same as some iPhone 5 batteries can), haven’t ever swapped the 6 and 6S because they have a different mAh reading
