It takes 5 minutes to refuel a helicopter with liquid fuel, and it is good for another 2-3 hours. Refuel, 2-3 hrs work, and so on.
It takes overnight to recharge a battery pack, and it is good for maybe 45 minutes. Then on the ground till recharged, or have another massive, heavy and expensive battery pack to swap out.
A quantum leap in energy density in batteries is needed for it to happen for a USEFUL human-carrying machine.