So I've had my vehicle for about a month. I plan to keep it for a long time (hopefully 10-20 years) and am very interested in preserving the battery as long as possible, as I'm sure many others are. I've read a ton on this and have found that the general consensus is 50-90 percent for day to day driving/plug in as much as possible. Set it and forget it type deal. I've also read that keeping the vehicle between 50-62 percent is ideal for long term battery life. My question is: is there any scientific theory backing up the 50-62 percent claim? I can't find anything scientific to back that claim. Thanks in advance.