The pitfalls of bying Lithium batteries (article)

pianotuna wrote:
15 is 200% less than 45.

It is not half-empty, it is half-full :)

When you reduce 45 by 100%, this 45 minus 45 =zero. Can't reduce a material item any further without resorting to devices kept under guard in Area 51.

But you can increase 15 by 200%, yes.