Battery Fuel Gauge - DeltaView; Link Compatible - 12V System (1-12V Battery, 2-6V Batteries)The Pro Charging Systems (PCS) Battery Fuel Gauge (BFG) measures your battery’s energy state with unparalleled precision and accurately displays the information with easy to read color coded LEDs. Our BFGs are DeltaView; Link (DVL) compatible which lets you to monitor the state of charge of your batteries right from your iOS™ or Android™ mobile device. Since our BFG uses intuitive technology, it fits and adapts to a wide range of applications. We take great pride in the performance, quality and versatility of our products backed by exceptional customer service.2.25” Diameter x 2.5”LRequires 2” cutoutCable Length:13.0’Features:Nine LED array shows level of battery pack depletionLED array flashes while charging the battery packLow Battery Voltage LED Indicator - Red indicator flashes warning and stays on when charging is requiredStatus self-adjusts while charging is in progressDeltaView; Link App compatible to conveniently check the status of your battery pack from your wireless deviceRugged PC ABS polymer case/water resistant designFor use with Lead Acid (Wet Cell) and AGM batteriesInstallation is simple and requires a 2 inch diameter cutoutAccurately Displays Battery Pack State/Charge StatusWith DVL - View Charge Status From Your Wireless DeviceTROUBLE FREE — Easy Installation - Connect It and Forget It!Advanced Microprocessor Constantly Evaluates Battery Pack StateDurable, Water Resistant - Made in the USA and Built To LastUsed in Many Applications Such As:Golf CartsHunting BuggiesElectric Utility VehiclesLSVsAerial LiftsLift TrucksScrubbersLawn EquipmentEmergency VehiclesBoats and More...