FeaturesMonitor charge of stored power sport vehicle 12V lead-acid battery or confirm if the vehicle charging system is working correctly2 automatic Modes – Battery charge level monitor (single LED blink mode) & Charging system test (arrow mode)4 LEDs cover ‘full to empty’ voltage range of all 12V batteries, including higher voltage AGM for power sport (4th vv LED = 12.7V )Battery charge level : LED matching charge level blinks every 3 seconds (long term draw less than 0.2mA)Vehicle Charge system : LED arrow mode activates when charge voltage reaches minimum 13.5V (v green LED) or ideal range of 14V+ (vv green LED)5A fuse with 5/16" / M8 ringletsSpecs Color/Finish: Black Features: Weatherproof Length: 40" Application: Electrical System Product Name: Cord Style: Combination Type: Battery Monitor Units: EachApproximate Package Weight & Dimensions Weight: 0.4 Height: 2.25 Length: 7.75 Width: 5.2