What voltage were they reading on your LUC4? Also how many cycles have those batteries seen? Lastly with DUAL 18650 boxes you need to marry two batteries together, basically charge together alternate left and right slot in the mod and only use em in that mod.My Sigelei 100W+ said my Batteries were at 47% so I thought I would change the 2 Smurfs... when they went into the Efest LUC V4 charger they indicated as fully EMPTY! They are now charging...
Anyone have any idea what the story is?