Tonny 12V Cigarette Lighter Car Battery and Charging System tester

Tonny 12V car battery tester to use the battery and charging system monitor , It protects the engine computer and 12-volt accessories from damaging surges when jump starting or recharging.The LCD screen displays the measured voltage with a bar graph to indicate battery charge level quickly identify the battery's charge status., 'Parts Diagram :Pivoting Head - Pivots for easy viewing and angle adjustmentVoltage Reading- Refer to battery state of charge chart for voltage reading levelsCharge Graph - Displays the measured voltage to indicate battery charge level Red LED - Indicates bad test resultAlternator test :15.11-16V Battery test : 11.99 - 0VYellow LED - Indicates potential problem or low voltage Alternator test : 14.51 - 15.1VBattery test : 12.00 - 12.60V Green LED - Indicates good test result Alternator test : 13.51V -14.5V Battery test : 12.61 - 13.5V'