I bought two packs of 3 of these cables and they bang and spark when removed from the unit. All six do. I've tested them with a Lenovo tablet, GoPro Hero7, GoPro charger, Pixel 2 XL, Galaxy S8 Active and OnePlus 6t. This behavior was the same for everyone. I've also tried different chargers to see if this is an ongoing problem. Every charger I've used has exhibited the same behavior. This represents terrible quality control standards which means I will not be purchasing from this company again. Especially since others have complained about the same thing, but the seller didn't bother to reply. Garbage product from a garbage dealer.