Each cylindrical cell must be individually connected in parallel and series configurations to busbars to create large battery packs. This process adds complexity in the construction and additional points of failure for ESS applications. . Lithium Iron Phosphate (LiFePO4) batteries have become increasingly popular for residential and commercial energy storage systems (ESS) due to their superior performance and durability. In the past, cylindrical cells were the most used battery cells, but with advancements in technology, prismatic. . How many lithium iron phosphate (LiFePO4) can safely be connected in parallel, in order to achieve higher power output (and capacity)? Wired directly together, without components such as resistors or power transistors limiting current flowing between parallel cells. For the purpose of this blog, all cells are lithium iron phosphate (LiFePO4) and 3. Each of these types has distinct characteristics that make them suitable for various applications.