I relocated mine to up in the tail section several years ago,wonder if that would void a recall/replacement?Five years on it now(and on OEM battery)and never an issue so doubt I'll bother with it.
The relocation kit should not void the warranty, however there is about a $40 upcharge for taking the tail section loose to get to it.
I have taken all the bolts out so the tail section can be slid back and should not cause any extra time to do the replacement. It actually looks like it should be less time than if the unit was in the original place with the under belly wing installed.
Yes, this recall supercedes the 2011 recall and you get another new unit, even if it was replaced once.