Weatherproof permanent battery lead with state of charge monitor for the 12V LiFePO4/LFP battery in your parked performance vehicle - 24/7 battery status at a blink of an LED With M6 / 1/4" - M8 / 5/16" ringlets that perfectly fit to powersport and most automotive battery terminals, and 15A fuse that protects the battery 2 automatic modes - battery charge level monitor (single LED blink mode) & charging system test (arrow mode) SAE quick connect charge port for charging battery when needed -40?F rated cable and electronics - premium quality. CORD W/TEST LITH JAR/20