Battery Fuel Gauge - DeltaView Link Compatible - 48V System (4-12V Batteries, 8-6V Batteries, 6-8V Batteries) The Pro Charging Systems (PCS) Battery Fuel Gauge (BFG) gauges your battery's energy state with remarkable precision and presents the information clearly through easily interpretable color-coded LEDs. Our BFGs seamlessly integrate with DeltaView Link (DVL), allowing you to conveniently monitor your battery's state of charge directly from your iOS or Android mobile device. Thanks to its intuitive technology, our BFG is adaptable to a diverse array of applications. We stand behind the performance, quality, and adaptability of our products, supported by exceptional customer service.