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Why Charging Your Gadgets Over 80% Is Such a Bad Idea | iFixit News
(www.ifixit.com)
This is a most excellent place for technology news and articles.
To be clear, you are still taking about rechargeable batteries right? I agree those should be replaceable. I sure as hell don't think phone should use single use batteries!
Yes, 18650 or a standardized rectangular equivalent.
A standard would be nice.... I mean all phones are basically the same size and shape.