We will be making heavy duty lithium ion battery packs which addressing problems of energy storage for longer period in term of hours. Electric vehicle assemblers and manufacturers always need high duty durable batteries for their vehicles , and we got a solution to that. Traditional ways of storage has many limitations and hazard although people have ways of power energy available to store. Our battery pack can store power energy for any available source, to use it later for a longer time with durability. it is customize-able to any shape and size even in any current and voltage rating without having much larger size and mass.