Battery for a hybrid vehicle

I am looking for a Lithium-ion battery with high capacity (51+ kWh) for my hybrid vehicle. The primary purpose of the battery is to power the vehicle. The ideal freelancer for this project would have experience in designing and building high-capacity Lithium-ion batteries for hybrid vehicles. They should also have knowledge of the necessary safety measures and regulations for battery design and installation. Additional skills in electrical engineering and automotive technology would be a plus.