High energy density demonstrating (> 1600 Wh/L) 405 Wh/kg 6X the energy density of a traditional Lithium Ion battery. The next generation Lithium Metal Air (4400 Wh/L), 680 Wh/kg, 10X a traditional lithium ion battery. XNRGI batteries have high currents for fast charge and discharge, long cycle life, safe, and low-cost high volume batch fabrication.