1.Car Battery Tester --- A great helper for checking the health, cranking and charging of the car battery, so you can accurately know whether the battery needs to be replaced or just recharged. Save your time and money. 2.12V Wide Application --- This universal battery tester fits all 12V charging systems, including ordinary flooded, AGM flat plate, AGM and GEL spiral for vehicles, forklifts, hybrid cars, SUVs, vans, boats, campers, motorcycles, travel trailers. 3.6 LED digital display --- 6 intuitive LED indicator lights display battery and alternator status, green means good/full, orange means medium, red means low. Super simple. No need to know the voltage, you directly indicate the quality of the battery and alternator. 4.More precision and fast response---2 copper clips more sensitive and precise, get results as soon as possible. 5.Safety and simplicity --- Reverse protection function prevents burnout caused by improper operation between terminal (+ ) of the battery and the cable terminal (-). The non-slip design allows you to use it flexibly even with gloves. Sold by grid cool store