Batteries are definitely PART of the final solution. How people fail to understand that using hydrogen requires 3x the amount of solar power one would need otherwise.

Weight isn't a consequence for most vehicles and for grid storage.

Long distance air travel will probably require something else, but that could easily be biofuels created for that purpose.

Incidentally, a hydrogen-powered Toyota Miral weighs about 10% MORE than a Tesla Model 3.