Interestingly if people start to buy extra batteries as you suggest then this will completely defeat the stated purpose of having replaceable batteries!
That being said, now they buy external power banks...
No it won't.
It's about reducing eWaste from the devices itself. Throwing away a whole device just because the battery is bad is much worse than just throwing away a worn out battery.
My 9 year old ThinkPad T470 is doing well with his 3rd or 4rd battery (and a new SSD and more RAM).
Also external powerbanks are pretty unpractical compared to a fresh new internal battery.
I can't believe you're arguing in good faith. Obviously just replacing the battery is better than replacing the whole device and all it's components just because the battery is bad.
The User above also said he bought two or three batteries, so he can swap them out when the battery is empty (I've also done this with my laptop) and distributing the charging cycles between the batteries, so they will all last longer.
If he wasn't a power user, he wouldn't drop money on two or three batteries in the beginning, and just buy a new one when the old goes bad.
The mistake in your argument is thinking that buying batteries results directly in e-waste. It first results in more working batteries being used over the lifetime of a device. Whether that results in more or less waste batteries in wallclock time depends on how that affects the time the device is used. If batteries are also standardized and thus device independent, the device becoming waste also doesn't mean the battery becoming waste automatically.
> My 9 year old ThinkPad T470 is doing well with his 3rd or 4rd battery (and a new SSD and more RAM).
But would it be doing well with only a new battery? Chances are a regulation that only regulates batteries won’t do much for tech that still is improving at a fairly decent rate.
It's running now with Fedora Linux, but it's still doing everything with 32GB RAM, and it's 2TB SSD what I need. (Editing Documents, doing some light coding, Python, R and browsing the Internet)
I also still get 10hrs battery life out of it.
I've thought already about replacing it, but it doesn't make any sense for me.
Especially that new ThinkPads in the T-Series have worse battery Life than I get right know due to their batteries being smaller and not anymore hot swappable.
Buying an extra battery is very different from buying an entire new phone and in no way it would offset the environmental gain of not buying an entire new phone.
Please don't engage in argument for argument's sake.
My 9 year old ThinkPad T470 is doing well with his 3rd or 4rd battery (and a new SSD and more RAM).
Also external powerbanks are pretty unpractical compared to a fresh new internal battery.