Battery Drain with Bluetooth

I seem to be the only participant on this forum that has no problem with my Korean made hearing aids connecting directly via regular Bluetooth to my LG Android phone, ALead wireless Mic, and laptop Windows computer. My rechargable hearing aid batteries are not removable and run 12 hours with no problem. The aids are always “connected” to my phone when wearing them. I suppose I could connect them to my new 2018 Nissian Leaf car but I won’t bother with that.