Product arrived and was assembly. Difficutl to dissasembly for input baterry cells.
The description in spanish it's not correct, about materials it says plastic and leather, there is no leather, just graved plastic. The charge of the batteries is done in paralell not by cell, then it's impossible to know the capacity of each cell and life, you obtain the total capacity. So, before inserting the Liion bateries be aware about the voltage/capacity/internal resistance for each battery. Place a adhesive strip on top of the battery cell and realize that are properly placed before closing with the battery top cover because the holder can't fix the battery properly.