RE: lithium batteries
I am also one person that doesn´t understand why use LiPo´s in turbine jets. We don´t need such energy density or endurance as our wing loadings aren´t affected by this negligible gain in weight and our flights aren´t longer than 10 minutes.
And for those who enjoy doing 20 flights a day, there are excellent quick charging batts and field chargers that allows doing it safely. (and likely with as little weight)