Hydrogen vs. Battery Electric Cars

7:40. I do not understand why , for reaching 400miles, an electric battery car is 1500 kg more weight.
In fact, we drive (with heavier cars) 5 km/kwh (speed 100km/h). That is now ca 4 kg of battery. 400 miles, 640 km, tells me that I need ca than 500 kg of battery.. Even with some extra strength in a car to carry this weight it cannot be more than 650 kg in total weight for battery. And we do not need a chemical factory in the car (the fuelcel) Difference in weight is not more than a third to 40% of what you are telling. Also, in contrary to your story....when you want more range in a hydrogen car it's going to be heavier. Because the fuel tank, high pressure tanks (800 bar I'm told) do have a mass.And when doubling the tank the mass will also get much more...to keep that 800 bars at bay, even in accidents.
You're telling that charging an bev takes 30 minutes average. New technology on batteries , laboratorium , claim minutes of charging. My car can charge from 10-80% in 18 minutes, not 30 minutes at a decent (800volt 350KW) fast charger. (Yes the ioniq 5 is already delevered in my country, range close to 300 miles).
For charging a fuelcel car you MUST go to a filling station (the same as for petrol cars). BEV cars can be charges at or near home (yes also when not heving a private parking or garage) when the government is taking environnement seriously like in the Netherlands. When you buy a BEV in my country just ask your town to build a public slowcharger near your house and they will do on all locations whene there is no one near by or when there are not enough slow chargers near by. Slow charging is all up to 10KW charging (3 phase) or in otherwords...every morning you're starting the day with a fully charged car and can go on for 300 miles without chatrrging (depending on the type of car more or less) . Mayb on 2 or 3 trips a year you''l need a fast charger. For hydrogen you'll need stations for refilling for every 300 miles. In other words....much more hydrogen stations needed than fast chargers when we extrapolate to hugh numbers (all cars om hydrogen or all cars on battery). Hydrogen stations have theit own problems for refuelling...I advise youtube on this subject from Tesla Bjorn (Bjorn Nyland) from norway and the video' s about this subject from engineering explained (an USA channel). Also I van tell that in Norway already one hydrogen fuelling station exploded. Easy to find on internet.

11:40 If the grid is down you cannot charge a BEV, taht's correct. But you can use some electricty from your BEV for keeping your fridge cold. (V2L). But also you cannor refuel your petrol car. Gazstations NEED electricity for pumping the fual. The same for hydrogen...They use electricity for compressing the hydrogen to the 800 bar.

No ' I'm not against use of hydrogen , but only at those places where the battery is not a technical option, because being good for the environnement means....as efficient as possible using the energy. Also not all batteries need to bee li-on...other options like iron when weight is less an issue can be very usefull.

Why should the grid fail at night when we start charging all our verhicles? 15 miljon? On average A car will be charges easily with 4KW during the night *Half a battery*  most even need less enery. And at night (Californie) we do NOT need so much airconditioners at homes, factories are using less energy. I calculated that in the Netherlands the grid will not get any issue when driving all normal cars electric. Average distance a day 36 km of at max 8KWH (1 KWH /hour needed   during a full night) Would be a very bad grid when it fails at such use. It's a big mistake to multiply number of cars with 50-100KW charging all at the same moment. We also do not expect that all petrol cars can refill at exactly the same moment....(The queue would be inmens if 15000000 cars wants to refill at only 8000 gaz stations).

Also the man telling about taking 4000 trucks offline during night for recharging....I suppose it will be a 7*24 business....well A battery can charge at 3C from 10-80% (my car). This does not alter when the battery gets bigger. So only for lunch brake or coffee brake it is enough time for charging (This will be using hyper chargers...maybe even 1MW).


ps My child was already busy wihth experiments on fuel cell AND (solar) battery cars in 2007 and 2008 at the high school. He's now an engineer, also on his curriculum as student being part of one of the (poduim reaching) dutch solarteams who did take part in the world solar challenge in Australie. I have my background in this on both, hydrogen AND battery technologies. And make my compares only on technical impact on environnement. NOT on political nonsense about this subject....as burning "bio fuel" (woods) for generating electricity which we see in my country....