I had a 12 VDC battery die, recently. it turned out that when I was putting in my sunshade, I accidentally pressed the emergency flasher. I know this because when I got a jump, the flashers were on when the car turned on.
No drain on battery when plugged in that I know of for Gen2. At least it is low enough that it never affected the Gen2 leaf’s I have owned ( 2018 SL, 2019 SL plus, 2023 SV Plus, 2024 SV Plus ).
On my 2024 Nissan Leaf; While I was putting in my sunscreen ( black side out for snow/ ice ) I accidentally hit the emergency flashers. I did not notice that they were on. It was about 5 PM, my car was plugged in, on a timer for midnight charging. It was about 20 F at the time and about 16 F...
I love ECO as it keeps my economy high. I also use e-pedal both are on all the time. When I think about it around town I use B instead of D too. All will increase the range of the EV.