[CAR BATTERY TESTER] You may be wondering if the battery needs to be replaced or if it just needs to be recharged. Our car battery checker tells you the condition of the battery by a battery and alternator test. Save your trip and money by avoiding sending good batteries to car manufacturers. [12V BATTERY TESTER] The car battery tester is for all 12V charging systems, including regular flooded batteries, AGM flat plates, AGM and GEL spiral batteries for vehicles, forklifts, hybrid cars, SUVs, vans, boats, motorhomes, motorcycles, travel trailers. [6 LED INDICATORS] The 12V battery analyzer is perfect for both home and commercial use. Six LED lights indicate the status of the battery and alternator, green means good/full, orange means medium, red means low. Intuitive, simple and clear. No need to know the voltage, we tell you directly the quality of the battery and alternator. [DURABLE DESIGN] The reverse protection function prevents depletion caused by misuse between the battery terminal (+) and the cable terminal (-). Pure copper wire and clip provide excellent conductivity and high sensitivity. The non-slip design allows you to use it flexibly, even with gloves on.