There is no doubt that high capacity lithium ion batteries are transforming energy management systems for several industries. The convenience of their compactness allows them to be used for a variety of applications, from electric cars to mobile gadgets. The complex industry mechanics easily explains how these batteries are so effective in sustained P/O and lifespan. As global industries progress, deploying green energy technologies becomes inevitable. Here the high capacity lithium ion batteries score better than their counterparts on the TCO criteria.