You just described current Macbook charging chip situation. The only place to find Intersil isl9240 proprietary charging chip, the one Apple forbade Intersil/Renesas to sell to anybody but them, is in smart battery case for the iPhone XR (A2121). https://twitter.com/hashtag/isl9240
Every time you need a $3 charger chip (real price of isl9241, one at the end instead of zero) to fix a $3000 computer you have to buy a $130 apple gadget, desolder it, and throw that $130 apple garget including battery into garbage bin.
Every time you need a $3 charger chip (real price of isl9241, one at the end instead of zero) to fix a $3000 computer you have to buy a $130 apple gadget, desolder it, and throw that $130 apple garget including battery into garbage bin.
$3000 laptop turned to paperweight due to ISL9240 unavailability. https://www.youtube.com/watch?v=HJ2jyo7pAmE