Jet Fuel - What's the Energy Density?

The issue for batteries replacing jet fuel is that it just doesn't compare in terms of energy density like jet fuel. The reason it's so amazing is that it's super duper concentrated. So if you get a battery that could do the same amount of work as jet fuel, the battery is going to be a lot heavier. That's disturbing. Imagine if your stomach was like 95 % of your volume, while they'd take a lot of toast.