Wh/kg is an insufficient metric for air batteries. One needs Wh/kg at full charge and separately or full discharge, or kg/Wh charged and additional kg/Wh per u

Wh/kg is an insufficient metric for air batteries. One needs Wh/kg at full charge and separately or full discharge, or kg/Wh charged and additional kg/Wh per unit Wh discharged, or something along those lines. (kg/Ah discharged could be used to estimate electrons per oxygen atom absorbed, too.)