The Dual Pro Battery Fuel Gauge (BFG) measures your battery's charge with unparalleled precision and accurately displays the information with easy to read color coded LEDs. Dual Pro BFGs are DeltaView® Link (DVL) compatible which allows you to monitor the state of charge of your batteries right from your iOS™ or Android™ mobile device. Since the BFG uses intuitive technology, it fits and adapts to a wide range of applications. The Dual Pro Battery Fuel Gauge represents greatness in performance, quality and versatility.
I needed this to monitor the forklift battery that is powering my home UPS system. Bluetooth? What????? Too cool! Range is standard Bluetooth range which is around 30’ max. I think that’s an FCC thing. The only issue I had was that it needs 12VDC to power it and because the milliamperes vary when operating, a drop-down resistor cannot be sized to alow it to be connected to the same 48VDC that it is monitoring. Not a biggie. I just added a 5ah SLA battery with a tiny Battery Tender on it to power the fuel gauge. Made the negatives common and voila! Works like a champ!