Feature1. Real-time display of battery health, temperature, charging and voltage values2. Battery starting and monitoring systemcharging system 3. Data abnormality alarm to remind you of the battery status in time4. Powered by solar panels, with Type-C charging interface, very low power consumption, one charge can be used for a week5. 433MHz accurate transmission, status monitoringbattery in real-time 6. Intelligent vibration induction, intelligent screen off and bright screen, automatic switch on and off, consumptionlow power 7. Patented algorithm, the longer the time, the more accurate.8. Applicable to all 12V starter batteries, multi-purpose, can be used in cars, trucks, yachts, motorcyclesThe main functionBattery test; Crank test; Tension test; Charging Test; Diapaly Health; Cost View; Type-C Charging; solar charging; Wireless TransmissionWide ApplicationCovers all 12V 100-2000CCA batteries including regular flooded, AGM flat plate, AGM spiral or gel batteries. Works on cars, trucks, motorcycles, RVs, SUVs, ATVs, boats, yachts, lawn mowers, and even golf carts.Installation steps:Step 1: Attach the Negative Connector (Black) Firmly To the Negative Battery Terminal.Step 2: Attach the Positive (Red) Connector Firmly To the Positive Battery Terminal.Step 3: Attach the Device To The Battery Surface With The Supplied Double-Sided Tape. Please Clean the Battery Surface Before Repairing.Step 4: No Installation Required, Just Place It In Front Of The WindshieldCharging Mode:ChargingType-C Charging Solar PowerBuilt-in Shock SensorAutomatic switch, no prior notification requiredTwo Modes:Daylight Mode ModeEveningAll Car Tester 12V BatteryTestTest CrankLoad Start Test Charging TestBattery VoltageSpecifications: DisplayBuilt-in lithium battery capacity: 750mAhCharging input: solar panel, TypeC Display: Monochrome LCD display with lightBackground Protection: FuseDefault Operating temperature: -20-70C Storage temperature: -30-80C