Lithium-air and all other -air batteries have outsourced part of their mass to the atmosphere, which is also part of the reason why liquid motor fuel has such high apparent density. The joke with lithium-air batteries is they absorb oxygen when they discharge, so a dead battery is full of lithium peroxide and weighs significantly more than a charged one.
Is that around the expected range, presuming a new battery is a drop-in replacement?
Lithium-air has an energy density of 11,140 Wh/kg, yielding 32,639 km, which doesn't seem possible.