The revolutionary NiMH bipolar design enables Nilar to produce modular batteries that improve the volumetric power density and reduce the overall complexity found in battery pack construction.


Battery manufacturers commonly use cylindrical or prismatic design, all of which historically have shown specific limitations.

Bipolar design has historically been the Holy Grail of battery technology, but has historically been difficult to realize. Nilar’s bipolar design has managed to overcome previous issues through innovative thinking and modern technology. Furthermore, the design has performance advantages derived from decreased resistance which enables high input/output currents. Nilar’s design also increases the utilization rate of the active materials such as cobalt coated nickel hydroxide and metal hydride, yielding a very high level of utilization, above 95 percent, of the theoretical capacity.

The greatest challenge with a bipolar battery design is to prevent the battery from drying out; something that Nilar has achieved through the development of a seal with hydrophobic properties and a gas channel, surrounding each battery cell. The multifunctional properties of the seal also greatly reduce the complexity of the battery design as well as the manufacturing process.

Nilar’s patented bipolar design optimizes space and reduces part count, which has resulted in a decrease in battery weight compared to cylindrical and prismatic NiMH batteries.