Feature: 1. Real-time display of battery healthvalue, temperature, recharge and voltage. 2. Battery startsystem and chargingsystem monitoring. 3. Data abnormality alarm to remind you of battery status in time. 4. Powered by solar panels, with USB recharging interface, low power consumption, long working time. 5. 433MHz accurate transmission, real-time monitoring of battery status. 6. Intelligent vibrationinduction, intelligent screen off and bright screen, automatic switch on and off. 7. Patented algorithm, the longer the time, the more accurate. 8. Applicable to all 12Volt starter batteries, versatile, can be used in car, truck, yacht and motorcycle. Specification: Main functions: battery test, cranking test, voltage test, recharging test, SOH, SOC, USB ReChargeable, SolarPowered, wireless transmission. Features: Real-time display of battery healthvalue, temperature, recharge and voltage. Battery startsystem and chargingsystem monitoring. Data abnormality alarm to remind you of battery status in time. Powered by solar panels, with USB recharging interface, low power consumption, long working time. 433MHz accurate transmission, real-time monitoring of battery status. Intelligent vibrationinduction, intelligent screen off and bright screen, automatic switch on and off. Patented algorithm, the longer the time, the more accurate. Applicable to all 12Volt starter batteries, versatile, can be used in car, truck, yacht and motorcycle. Specifications: Power consumption: 2.3mA Radio frequency: 433MHz Input voltage: 6-25Volt Working temperature: -40℃ to 80℃ Battery: 3.7V, 750mAh Package size: 135 * 115 * 25mm / 5.3 * 4.5 * 1.0in Package weight: 100g / 3.5ounce Packing List: 1 * Host 1 * USB Cable 1 * User Manual 1 * Battery Monitor Package List: 1 * Host 1 * USB Cable 1 * User Manual 1 * Battery Monitor