This product use synchronous rectification step-down chip scheme, low heat, energy savings and environmental protections. DC7V-100V Cart Battery Meter Battery Capacity Voltages Product Description Battery Capacity Monitors, DC7V-100V Battery Meter,12v 24v Battery Power Percentage Voltages Indicators Gauge Features: High brightness LCD display screen, double display of Voltages and battery levels. The display is clear and can read clearly whether used during day and night. This product use synchronous rectification step-down chip scheme, low heat, energy savings and... This product is suitable for both lithium and traditional Leads-acid batteries, making it a practical addition to various user. The display is clear and can read clearly whether used during day and night. High brightness LCD display screen, double display of Voltages and battery levels. This product is suitable for both lithium and traditional Leads-acid batteries, making a practical addition to various user Specifications:ABS Measurement DC7V-100V Working current Type without FunctionSize:Approx., 61., 3mm/2., 41''x34mm/1., 31''x13., 5mm/0., 53''Package Includes:1Piece Battery MonitorsNote:Please allow 1mm errors due to manual measurement. RV Battery Level Indicator IPX7 Battery Ty Monitor,DC 7-100V Battery Percentage Voltage Tester 12V 12v Battery Monitor High brightness LCD display screen, double display of Voltages and battery levels.