This is a mini digital battery capacity tester for 12V/24V/36V/48V - battery and 3.7V lithium battery and 3.2V Fe battery with polarity reverse protection and indicator. Colorful LED display to monitor the battery status timely, which is easy to read the value in dark environment with the green/blue/white backlight. Widely used for cars, motorcycles, scooters, bikes, power bank, test equipment, etc. Feature Wide Operating Voltage Range: It can be operated within 6-63V Bright LCD Display & Low Power Consumption: It owns clear and LCD display with white/green/blue backlight. However, this monitor needs low power consumption. Fit for Various Battery Specification: The battery capacity reader is suitable for 12V/24V/36V/48V battery, 3-15series 3.7V lithium battery and 3.2V Fe battery. Application: This functional battery detector can be applied to various instruments and meters; portable device; power bank; medical device, electrombile, self-balance car. Specification Model: GY-6S Color: Blue Material: PCB and . Backlight color: Green /Blue /White Screen size: 43 x 11.3mm / 1.69" x 0.44" Voltage range: 6-63V Circuit load : 5 - 6mA Suitable for: 3-15pcs 3.7V Lithium ; 12V, 24V, 36V, 48V; 3.2V Fe ；3.2V Fe Dimensions: 61.3 x 33.3 x 13.5mm / 2.41" x 1.31" x 0.53" Mounting hole Size: 58 x 28.1mm / 2.28" x 1.11" Wire Length: 30cm / 11.8" Package list: 1 x 12V/24V/36V/48V - Battery and Lithium Battery Capacity Tester Voltage Meter LCD Monitor (Blue)