I had bought there 1year the same type of charger to a low gadget site well-known Chinese range, but the plastic it to literally exploded after 6 months insertion force into the cigarette lighter . Patched with tape, after 1 year, it is ultimately one of the USB sockets which is torn.
In short, I buy this model for something solid and I'm not disappointed: the plastic body is in one piece (actually one piece) and aluminum ring is in good order. No worries amperage, it recharges very well. Satisfied!