I know what you mean. When the battery is getting low, the taste of the juice changes for me. Since I realised this, I hardly every deep-cycle the auto batteries. I also experienced this with Ego Twists. After a few days I craved an auto shorty OVK because I felt like I'd been drinking the juice instead of vaping :scared:
I also found that after chain vaping a tank on the manuals, the juice gets a juicy taste but not a good juicy taste, almost like no vapor, just juice but no juice in my mouth!! Make sense?