I don't know why but I never tried to put a 21700 in my old Efest LUC V6 charger. I thought I read they wouldn't fit a long time ago maybe. Samsung's can go in there but they're just way too tight. I don't want to damage wraps. Molicel's fit a lot easier. They're just like the Ijoy 20700s I throw in there. I just hold the spring down with one hand and slide them in from the side.
I have another charger I use for bigger batteries too so I'll mostly use that anyways. I just wanted to post my findings.
I have another charger I use for bigger batteries too so I'll mostly use that anyways. I just wanted to post my findings.