The single biggest killer of DC-DC charger performance is heat. It begins to kill their efficiency over 55°C, with zero charge being supplied over 85°C. Being a fully sealed unit, they won’t let dust or water in, but at the same time, aren’t great at letting heat out. Introducing the Longranger Stainless Steel Mounting Bracket. It’s specifically made for the 200-Series LandCruiser, and fits up between the grille and radiator – specifically where Redarc suggest it be mounted to get it away from engine bay heat and ensure it’s always working at full efficiency.