It may be a pain in the butt to do so, my 2014 Dell XPS 13 it is serviceable - the RAM is still soldered onto the mainboard unfortunately, but aside from that every other component can be replaced. I fail to understand why I can't even replace the battery safely in a modern MacBook without a headache.
All of those look like "compatible" knock-offs, not genuine OEM parts. Looks like Dell doesn't sell any official replacement batteries for that machine.
