im currently playing Dalek Mod update 43 and loving it. But there is something I would like to know more about. So in the mod there are these items, Solar Cell and Oxygen canister, I have an idea on how they work. But I cannot seem to use them and I would really like to know what they're for if that's ok.

thank you.

 The canister is for U44 from what I've heard and the cell is for recharging K-9.