48 Volt LED Led Display Golf Cart Trucks RV Boats Lead-Acid Battery Indicator Meter Gauge Works with 48V Lead-Acid Batteries in Forklift trucks, Golf Carts, RV's, Boats, Scooters and electric vehicle. etc 10 LED Bar Display, Colored LED Indicator Status When your batteries are fully charged, the far left LED will illuminate green IP65 water Resistant Note: Only applies to the accumulator(Lead-Acid Batteries)