BT-171 12V Battery Tester LCD Digital Auto Battery Analyzer Charging Cranking System Tester Car Battery Checker Diagnostic Tools Item Description Model Number:AT619 Type:Vehicle Battery Tester DIY Supplies:ELECTRICAL Brand Name:Aideepen Origin:Mainland China Certification:CE bt002 battery tester:battery tester bt168 battery tester menards:battery tester telvin bt2000 battery tester:battery tester bts 2002 lowes battery tester:battery tester checking battery tester replace:interstate battery tester Product material:ABS insulation material LED reverse display screen:yes Application:Auto repair industry Voltage:12V : BT-171 12V Battery Tester LCD Digital Auto Battery Analyzer Charging Cranking System Tester Car Battery Checker Diagnostic ToolsUSD 3.01/piece Bt-168 Pro Digital Display Battery Tester C D N AA AAA 1.2-4.8V Button Cell Battery Capacity Check Detector For 18650 BatteriesUSD 1.44/piece LED Digital Display Voltage Gauges Waterproof Round Panel Car Voltmeters with Terminals Waterproof Voltmeter Battery TesterUSD 7.94-9.48/piece ANENG BT189 Digital Battery Tester LCD Display 9V 1.5V Universal Button Battery Tester Volt Capacity Detector Capacitance ToolsUSD 2.33-2.97/piece 10A 50A 100A Battery Tester Multifunctional Battery Meter Current Voltage Power Energy Consumption Capacity Test InstrumentsUSD 5.18/piece 1.55V 3V Button Battery Tester LR44 CR2032 CR2025 Watch Battery Checker Portable Button Cell Coin Battery Power TesterUSD 2.47-2.69/piece DC 5-48V Digital Voltmeter Car Motorcycle Voltage Meter Round Waterproof LED Panel Monitor Display ATV Boat Truck Battery TesterUSD 4.39/piece DC8-90V Battery Meter Battery Capacity Voltage Monitor Gauge Indicator Lead-Acid Lithium Battery Tester for Golf Cart RV BoatUSD 2.59/piece Features: 1. Small and portable 2. High sensitivity, fast response, simple and convenient operation 3. Widely used in the auto repair industry: especially applicable to the maintenance and repair of automobiles, electric vehicle repair technicians, families and enterprises 4. It has the function of reverse connection alarm and overvoltage protection. The red clip is connected to the positive pole "+" and the black clip is connected to the negative pole "-". If the connection is reversed, the LED display will not display, and the REVERSE indicator will light up and give an alarm prompt 5. With LED reverse display screen, the backlight is also clear, and the test shows the reverse display screen, and the measured value can be clearly seen at night or in the dark to assist the measurement work, and easy reading 6. After the connection is correct, the LED display will display the real-time voltage of the measured voltage and the LED will light up to indicate the battery status 7. Test the state of the generator charging system: during the test, please keep the tester and the battery terminal correctly connected, and then start the generator. At this time, the output voltage will be displayed on the LED display, and the right LED indicator will light up to indicate the state of the generator 8. It is easy to complete multiple tests without installing batteries, and use live measurement Parameters: Product model: AT619 Product model: BT-171 Test voltage: 12V Test method: positive and negative pole test clamp Product material: ABS insulation material LED light: red/yellow/green/blue/white color light Product weight: 78g Description of LED lamp: FULL - full charge: LED light is on, and battery is in normal state MEDIUM - medium power: LED light is on, battery voltage is slightly low and needs to be charged LOW - low power: LED light is on, the battery is low and needs to be charged, and beep alarm EMPTY - no power: LED light is on, the battery is completely dead and needs to be charged High voltage: LED light is on, and the output voltage of alternator is high GOOD - Good voltage: LED light is on, and alternator output is normal DEAD-fault: LED light is on, battery voltage is too low, buzzer alarm indicates that there should be a problem with the battery. At this time, the battery should be checked by a professional engineer to see whether to replace it RECERSE-Positive and negative poles are connected reversely: LED light is on, battery tester is connected reversely with battery terminal, and buzzer alarm prompt Package include: Carton packaging Battery tester * 1+instructions * 1 Payment We accept payment only through PAYPAL Shipping We ship products worldwide through standard express courier service, it will reach within 7 to 10 days to abroad buyers, we ship the product after recieved clear payment and give full information about shipment to the buyer Return We accept product return 25 days from delivery date but product should be in original condition.