here is the link to ebayIs it a charger or inverter? Kind of hard to comment on it when you only mention "VP". Link?
I'd be inclined to stick with something like this one which is rather popular here on the forum. I've also seen them in the classified section from time to time for $30 - $35.here is the link to ebay
120W Charging Board Plate Battery Charger Power Adapter for DJI Phantom 3 New | eBay