I've ordered 32 4 batteries for the flashlight Fenix PD at ENERdan. They were delivered fast and packaged well. It is particularly pleasing that they were delivered in a precisely matching protective box (1 for 2 batteries). I'm very satisfied. I invite good charger (NiteCore Intellicharge I2) and let the battery could easily and without much heat. The voltages of the individual cells are identical. During operation of the lamp, the batteries themselves were in Turbo mode is not overly warm, reaching the specified work of burn time. The price-performance ratio (compared to the original-Fenix- and batteries from other manufacturers) is superb. Therefore my full purchase recommendation. Can give no rating I over the long-term behavior.