I'm still using my Sigelei 150 currently with a Griffin tank. My problem I've been having since about a week ago is when the batteries reach around 50% the mod stops working and just flashes the Check Atomizer screen. I'm using LG H4 batteries on .3 coils. Also the charger is an Efest LUC. Everything has been fine until about a week ago. I'm not sure what's the issue here the mod or the batteries. I also tried different batteries and they're having the same issue. Has anyone had this happen to them? Any suggestions or info?