That hydrogen cartridge I assume is about the same size as the battery and contains 5 liter, roughly a gallon. Hydrogen at 300 bar is 0.75 kWh / liter, so 3.75 kWh. Then it goes through a fuel cell at 50% efficiency and you get 1.9 kWh usage power. Not better than the battery. And if you want to power a car with, say 60 kWh battery car, it means 32 hydrogen canisters to swap.
There is also liquid hydrogen that has 2.36 kWh per liter. With 5 liter you get 5.9 kWh usage power per canister, almost triple the battery, but don’t park these indoors. 10 of these are needed for a 60 kWh car.
For those scooters, the battery solution already works good.
The numbers are kinda meh for this. You have for example the gogoro scooters with swappable batteries. Each battery has about 2 kWh, weighs 10 kg.
That hydrogen cartridge I assume is about the same size as the battery and contains 5 liter, roughly a gallon. Hydrogen at 300 bar is 0.75 kWh / liter, so 3.75 kWh. Then it goes through a fuel cell at 50% efficiency and you get 1.9 kWh usage power. Not better than the battery. And if you want to power a car with, say 60 kWh battery car, it means 32 hydrogen canisters to swap.
There is also liquid hydrogen that has 2.36 kWh per liter. With 5 liter you get 5.9 kWh usage power per canister, almost triple the battery, but don’t park these indoors. 10 of these are needed for a 60 kWh car.
For those scooters, the battery solution already works good.