So if you want phones to be usable for longer period, you need to standardize batteries.
> Replacement batteries for any model will have to remain available to users for at least five years after the last unit of the product is placed on the market, the regulation also states.
Both seems pretty non-ideal if it decides to go exothermic and start a fire. Neither will be actionable (what, I'm going to sue a nameless company in China?).
I am sure of this: Until this battery chemistry is sorted out to be unilaterally safer (which may never actually happen), or we switch to something else that is safer, or third-party manufacturers start bringing their face to the table instead of deliberately hiding in the shadows, I'm sticking to batteries that are sold by the company that made my phone.
I don't have room in my life to save a few dollars by buying cheap lipos from unknowable sources. There's too many corners that can be cut to save on process expense and QC, and they far too often are cut.
And to that end: A standard, legislated promise of 5 years of availability from sounds a lot better than what we have today.