So I was trying to work out how to make a crack crossover work and I realized I am very not-clear on a vital aspect of The Martian canon. That is: how many surface-to-orbit vessels are there, and how do they work?
The Ares crew took some kind of lander down to the planet, which remained there(?), since Mark uses the jet fuel to make water, yes? He's all happy that Martinez piloted them so well, there's still stuff left. And they took the MAV back to the Hermes, and the MAV had been pre-sent so it could charge itself.
However, the original lander is not good enough for getting back to orbit, since Mark has to go to the other MAV. But is he going there since that would be a good place to meet up with the next mission, or is he going there because there'd be no way for him to go up from his site to meet up with the rest of the new crew on the Hermes? Can the original lander not "charge itself" like the MAVs can? I do not remember if they took it apart to make the Habs/the rovers/anything else, so it's possible it's not even in the correct form to be useful for that purpose anymore.
Anyone remember this off hand? Am I doomed to a deep-dive canon review over this? Basically what I want to be able to do is have Ares 3 go up to the Hermes, wait a couple days, then take the MAV, or something else, down to the planet again.