How to fill a hydrogen tank using hydrogen bottles?
Solution 1:
I don't think you can fill a hydrogen tank with bottles, the intended use is that you fill the bottles with the tank. As far as I know, hydrogen and oxygen can only be tranferred using conveyors. You could consider using another ship to tow your ship to a connector on the base, that's probably the easiest solution. You could also fill a tank and ferry it between to get your ship off the ground, but you'll need power on both grids to connect them with connectors or merge blocks.