One has to define "most powerful" but the largest to my knowledge is the BCI (Battery Council International) Group 8D. There may be larger special purpose batteries available but the 8D is the largest you're likely to find at any battery, marine, and truck supplier.
Even in very large storage situations like ships the practice is to use many 8D batteries. Anything larger is too difficult to be handled by a person as 8D batteries are approximately 140lbs.
It had the most powerful Navy.
The sylverback gorilla
The United Kingdom of Great Britain and Ireland were the most powerful. They had the largest GDP in the world, a huge industry and the largest Empire in world History
The largest and most powerful Muslim empire was the Ottoman Empire.
i think haiti had the most powerful
which U.S. bank has the most assets
AFL-CIO
The left ventricle is that largest and most powerful.
gulf stream is
fast Glycolytic
There were two , the Japanese battleships Yamato and Musashi which were the largest and most powerful of any battleships ever constructed .
The Gulf Stream