Talk:Quick Thinking/@comment-108.81.82.82-20140526153129/@comment-24580901-20140529024803

It means how much health that a single point of energy is worth.

For example:

At rank 0: A single point of enegy is worth 0.4 health (40% effeciency), meaning a pool of 100 energy will be worth 40 points of energy.

At rank 5: A single point of energy is worth 2.4 health (240% effeciency). meaning a pool of 100 energy is worth 240 health.

While that is important, bear in mind that this converted health is also effected by armour, and so can be extended furthur with durable 'frames like Valkyr, Rhino, Frost, and Saryn.