From Hong Kong I ordered a copy of the King. "Sky Ray King", also known as "Fandyfire UV S5". Since parallel fit in four 18650'er, but they are in no battery cage. Thus, the positive poles loops directly on LED driver gold slip ring. The first time you try this battery I have made a fat scratches in this slip ring. This is because one of the four holes on the raised Pluspolkappe is not deburred or the cap is wrong and thus grind the holes on the slip ring. So I have the Weiss batteries now in the Fenix TK35, where they, scratch-free and fit well in the battery cage and EagleTek now sitting in the King. The not grind and I'm happy.
However, I have to deduct a star because of shrinkable sleeves for the batteries is not adapted very clean. Also because of the positive pole caps not deburred or decentered, I am not convinced of the mechanical quality at 110%!
Also compatible with any FENIX TK35 and SKY RAY KING or FANDYFIRE UV-S5
