Saving a few percent on 1 watt is a few tens of megawatts tops. You'd save orders of magnitude more by not forcing them into the trash heap with repair-hostile

Saving a few percent on 1 watt is a few tens of megawatts tops. You'd save orders of magnitude more by not forcing them into the trash heap with repair-hostile design, extreme fragility in the name of thinness that noone asks for and everyone immediately gets rid of with a case, and forced obsolescence via software updates