OPTIMATE MNTR O-127 20PK

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