One thing I haven't seen mentioned is that this will inevitably make batteries smaller.
If you are supposed to be able to open the phone and remove the battery manufacturers need to design a way to remove the cover, shield other components, create a compartment for the battery, and use sturdier batteries. All of those things take us space. Manufacturers aren't just going to make phones thicker so that physical space has to be eaten by something... and it's going to be the battery.
I really liked having a removable battery on my phone 10 years ago in case I had a particularly long/intensive day. But now that I make it through a day without worry this could actually be sorta annoying.
If we are gonna get removable batteries there needs to be a standard battery format so that each company won't have its own special battery design. One battery design for all devices. This way the battery will work in whichever phone you put it in.
I don't believe so. A battery standard would specify the interface, not the actual battery design from a technical standpoint. It would specify:
size and shape, i.e. where connectors go, assuring it fits in a phone
voltage and amperage provided
The rest is up to the battery manufacturer and is completely open to innovation. You want to put a Li-ion battery in there? Just make it the right shape and as long as it can provide the output required, it's fine. Want some future-tech fusion battery? As long as it's the right shape and puts out the required power!
I mean, I use a fairphone (with removable battery) and in a normal day it can go a whole day without going below 20%. And even if I don't comsider ot too much of a hassle bringing an external battery for recharge with me when I know I'm gonna use it a lot or will not have time to recharge during the night.
sure, but we're at a point with battery chemistry where that no longer really matters that much. the fairphone 4 is already at 3900 mAh and with both phone electronics constantly getting smaller and battery chemistry improving, it's highly likely that this year's fairphone 5 will not only crack the 4000 mAh barrier but fly past it. with a modern mid-range soc (which is really all you need to have a smooth experience outside of games) it' more than enough to get you through the day with a good margin to spare. and that's already a user-servicable design that no doubt guided eu legislature on this issue.
Do you have any source to that? Manufacturer saying "replace the rubber seal which blocks water when you replace the battery, else you're operating the device incorrectly and thus caused avoidable damage, and warranty is now void," sounds ok and legal to me. It'd be similar to leaving your battery door literally open then you complain water got in.
edit: the problem with this is that companies won't listen to the law because they know that you probably won't sue them, and even if you do sue them they don't care because they will receive a slap in the wrist.