I think your analogy is a little off. It's a little more like describing a car fire (Chevy Bolt) by the name of the battery cell manufacturer (LG Chem) whose battery is burning. There's a lot more potential energy in battery cells than in lumber.
Burning wood has a energy density of roughly 10 MJ/kg. Lithium batteries have about 0.875 MJ/kg of electric energy. Lithium metal burns at about 43.1 MJ/kg. So yeah. By a factor of 4 at least.
