>>298239043
I use pic related for my trackers and other devices and they work fine, not had issues since I first used them with my phone about a year ago. A lot of these cables are quite similar and I'm pretty sure most of them all come from the same factory and are just rebranded by other companies. Honestly just buy one from a company that has lots of good reviews on Amazon or similar. 

The actual magnetic connection is quite loose and that's by design. If you try charging your trackers/ controllers from powerbanks while playing you may have issues but for regular overnight charging you won't have an issue. I've had to remove the plugs a few times before on trackers and my other devices with no issue - I suggest using something plastic (like the clip of a Biro pen cap or something) to get them off just to be safe.