Energy density

Energy density is the amount of energy a battery stores relative to its mass (gravimetric, Wh/kg) or volume (volumetric, Wh/L), determining how much range or runtime a given size and weight can deliver. It is shaped chiefly by cell chemistry, with high-nickel NMC favouring energy density and LFP favouring cost and longevity. Energy and capacity characteristics are among the general battery characteristics surfaced in the public tier of the battery passport.