Personally, I have this two-set acquired principally for my Fenix PD32-UE (Ultimate Edition), where properly the battery sits, fits smoothly and works perfectly.
The one practical way is delivered in a useful plastic insert very well, or can be stored in a return in kind.
The 2 batteries came preloaded with me as I was unpacking and this joyfully stuck to refuel in the PILA charger.
The charged battery is inserted into the flashlight, you notice the fit where it nor hooked in length in diameter.
Lamp and battery are current as it should the - and keep it for my in sufficient quantity.
So far, it did not succeed, use the battery pack in the lamp aan a piece which attracts at least 7 amps at full load modes.
My personal decision to buy this increase were: brand quality, capacity, accuracy of fit and an integrated protection circuit against deep discharge and overcharge protection.
At a later time I will comment on the term precisely because I also in the Fenix TK35 where they will test the way, sit perfectly the batteries.
Delivery = 2 pieces battery with useable but a bit fiddly closure on the plastic box (here a star deduction)
Conclusion: For my subjective experience is obtained here for about 32 brand quality that do not need to hide in processing and performance within tolerable price segment.