Vampire drain is almost exclusively a rivian problem. I have two EV6s a Niro and have researched the Ford lightning. None have vampire drain. In fact I can park my ev6 for 2 weeks at the airport and maybe lose 1% at most. I believe in is going to have to do a total recall on these vehicles...
My battery loses 3% today. The r1t is maintained in a climate controlled garage. I even put it on camping mode. Looks like I'm going to have to dump of the vehicle and get myself a bronco.
Pick this up at Amazon for a hundred bucks. Actually work pretty well not the heaviest but rolls up into something about half the size of a sleeping bag.