Anyone tried one of those yx 6 in 1 battery chargers? Is the outer body plastic or metal? Thanks

I just bought one. The outer body is metal. It feels like decent quality, but I've ready some sketchy reviews. It has 178 reviews on Amazon, mostly positive. I just wanted to check this forum before I hook my batteries to it . One strange thing I noticed about it, is that the plug that connects to the battery has less prongs than the charger that comes with the drone.

Any third party chargers you want to make sure of compatibility with your drone and that it works properly. Make sure that you read the reviews.