If you didn't make a NAND backup before hacking, it is currently impossible to make a clean NAND. Also, AutoRCM does not drain the battery; leaving the console mistakenly in RCM drains battery. Either do not turn off the console and leave it in Sleep Mode or power it off properly by ensuring you always power it off in RCM with either a manual shutdown (holding the power button for 12 seconds) or using the Power Off function in Hekate. And ChoiDujourNX installs AutoRCM by default.
Right now I have an untouched launch console. I'm just trying to figure out the right steps. Assume a completely stock untouched system, how do I make a clean backup? Isn't some level of hack necessary to run the programs that make a backup? Thanks for the reply!