4-in-1 DEF Antifreeze Coolant Refractometer for Automobile Antifreeze System, Diesel Exhaust Fluid, Battery Acid and Windshield Washer Fluid electronics_best_sellers_Jan2025 rated current: 3A

rated current: 3A

or USB4 port

2" Dacromet coated bolt to prevent rust and 1x wire adapter (only for Coleman system)

and engineered to last for the life of your vehicle

also monitor the voltage

4-in-1 DEF Antifreeze Coolant Refractometer for Automobile Antifreeze System, Diesel Exhaust Fluid, Battery Acid and Windshield Washer Fluid electronics_best_sellers_Jan2025 rated current: 3A4 in 1 DEF Antifreeze Coolant Refractometer for Automobile Antifreeze System, Diesel Exhaust Fluid, Battery Acid and Windshield Washer Fluid Product Features Function 1: Measuring freezing point of automobile antifreeze based on ethylene glycol or propylene glycol. Measuring Range: 50 to 0 C. Function 2: Measuring specific gravity of battery acid and provide a quick reference of battery charge condition. Measuring Range: 1. 10 to 1. 40 kg l Function