A cursory search hints me that the XPS 13 battery is not removable, and, according to some reviews, downright soldered, while the Alienware one is a literal brick. To me that makes the case, even today.
I don't care about popping a lid off every three years; swappable batteries, to me, is nonsense. What makes me irate though is a) the fact that they're downright glued when they could be held in place by other, readily serviceable means†, and b) in 2013-2015 I could code/compile stuff and still have a sizable portion of the best-case battery life, while today the battery size is dwindling, compensated by enhanced power management to maintain the "10 hour" figure, but it falls apart under any load that does not involve browsing or watching some hardware-decoded video. We should be shooting for 20, 30, 40 hours of use on battery, not the current "good enough" status quo.
† Clips, double sided tape, whatever. If it's a problem to not use glue then it's a worthy engineering challenge to use some goo that comes off easily. The current glue situation is a lazy copout, it's Steve Jobs's "plywood on the back".
I don't care about popping a lid off every three years; swappable batteries, to me, is nonsense. What makes me irate though is a) the fact that they're downright glued when they could be held in place by other, readily serviceable means†, and b) in 2013-2015 I could code/compile stuff and still have a sizable portion of the best-case battery life, while today the battery size is dwindling, compensated by enhanced power management to maintain the "10 hour" figure, but it falls apart under any load that does not involve browsing or watching some hardware-decoded video. We should be shooting for 20, 30, 40 hours of use on battery, not the current "good enough" status quo.
† Clips, double sided tape, whatever. If it's a problem to not use glue then it's a worthy engineering challenge to use some goo that comes off easily. The current glue situation is a lazy copout, it's Steve Jobs's "plywood on the back".