This data-file is a breakdown of lithium ion battery materials and their costs. A typical lithium ion battery has a cell-level energy density around 250 Wh/kg, and weighs 380 grams, of which 40% is cathode metals, 25% is anode materials, 20% is current collectors, 15% is electrolyte and separators. Total cost is around $150/kWh, half materials, half manufacturing.