Product Specifications: Available Colors: Blue, Red Working Current: 5-15mA Power Resolutions: 10%, 25%, 40%, 50%, 60%, 75%, 90%, 100% Voltmeter Range: DC 6-100V (no overvoltage) Voltmeter Accuracy: Approximately 1% Operating Temperature: -10°C to +65°C Key Features: 100% Brand New and High Quality Constructed from High Quality, Durable Materials Easy-to-Read Voltage with Health Bar Color Bar Indicates Battery Level, Bottom Displays Voltage Automatic Voltmeter Decimal Point Adjustment Versatile Applications for Lithium, Lead-Acid, Nickel Metal Hydride Batteries, etc. Simple Usage Instructions: Connect the Red Wire to Positive, Black Wire to Negative Terminal Compatible with 24V, 36V, 48V, and 60V Vehicles Battery Health Bar Compatible Across All Supported Voltages Display Tube Available in Blue and Red; Power Bar Displays Eight Levels, Including Green Indicators Package Includes: 1× Digital Battery Capacity Meter Tester