this is the new release high density battery Mini version of the older 25000mAh 100W INIU.
early slight discount is a common tactic to get people to try the product and get reviews.
cheaper than the Xiaomi 25000mAh 100W PD powerbank which was often posted for $139.
this INIU is much more compact and can also do 100W PD out of a single port. it achieves it with high density battery + stacked circuit inside.
if you have doubts about 100W output, many INIU powerbanks have been tested to achieve the output spec, the tests did mention it gets toasty when doing it though. marketing says 100W in/out but imo it might be 65W in, because that's the case with the smaller 20k Mini model (65W out but 45W in) but I could be wrong.
Xiaomi 25k: 18.8 x 8.13 x 2.79 cm; 580 Grams
INIU 25k: 11 x 7 x 3.6 cm; 440 Grams (9mm thicker but only 58% of the length of Xiaomi, 140g lighter).
Also available INIU 20000mAh (65W output max) new release Mini version is $76.49 delivered.
https://www.amazon.com.au/INIU-20000mAh-Compact-Portable-Cha…
in my opinion the 20k is slightly more impressive capacity to weight than the 25k but doesn't do 100W out. the 20k does 65W max out, and 45W in.
INIU 20k: 11 x 7.1 x 2.9 cm; 324.1 Grams.
this 20k one in particular was listed a month ago on amazon which then got removed. it's now back but looks like they combined the listings of the old and new Mini together as "options" so be careful not to click the wrong one.
also worth mentioning, even though Xiaomi is bigger heavier and more expensive it has been said it uses high quality Samsung 21700 batteries inside.
the ultra cheap (2 year old stock) Limeta 10000mAh powerbank deal I posted is also said to use Samsung 21700 inside, but this info did not seem that important to most ozbers. https://www.ozbargain.com.au/node/890654
btw the negative review for the 25k claiming only 16000mAh 80Wh capacity is stating the output capacity written on the powerbank. I see this on powerbank reviews all the time, a 25k powerbank can never have 25k output capacity it's impossible. there is energy lost to heat.
some brands won't even have the output capacity printed at least INIU has it on the powerbank. INIU also tested to perform better than most in terms of % output capacity and also input to stored to output capacity.