For 12v battery drain problems you should check out CUSTOMER SATISFACTION advisory 15B04. This is not exactly a recall and so may not be on recall list but this is the problem with a lot of the early C-Max vehicles like mine. I bought 3 batteries in a row before finding this. If you need to buy a charger to keep charging your C-Max you should look into what is causing the battery to discharge.
https://ford.oemdtc.com/1696/15b04-12-volt-battery-test-and-module-software-update-2013-2014-ford-c-max