My Fenix 6S Pro used to click nicely onto the charging cable, but for a while it has slotted in more softly - now for the first time, it has failed to charge to 100% overnight - I have since given the connections a decent clean and am keeping my fingers crossed. If it becomes unchargeable despite what I do I think I will go for an Instinct - the top models are now well over £1,000 - crazy.