12V/24V Battery Tester, Voltmeter, Charging System Analyzer with LCD and LED Display, 23.6 inch Cable Length

[12V and 24V Car Battery Tester]: The AUTDER AD-808 car battery tester works with all 12-volt and 24-volt batteries for vehicles, cars, motorcycles, trucks, motorhomes, off-road vehicles, SUVs, boats, yachts, and lawnmowers, even golf carts. The accuracy of the car battery voltmeter is close to 0.01V, e.g. B. 12.29 V.

[Generator Charging System Analyzer]: In addition to providing a quick reading to see if a vehicle battery needs a crack or replacement, it can also test the generator's output condition to prevent battery damage due to overcharging or incomplete charging.

[Ease of Use]: We have creatively developed three speeds to test the alternator, 12V battery, and 24V battery. If you keep the dial in the middle position, the LCD screen will display the real-time voltage, and the LEDs will indicate the generator's status. When switching to 12V or 24V speed, the LCD screen displays the real-time voltage, and the LEDs indicate the battery status. [Reverse Connection and Overvoltage Protection]: During reverse connection, the error code "ERR" will be displayed on the LCD screen, and the built-in buzzer will sound. The test range for the digital voltage is 4 to 20V DC. If the voltage is outside this range, "LO" (< 4V) or "HI" (> 30V) will appear on the screen.