High-precision measurement with a voltage range of DC7-100V and an accuracy of 0.1V; capacity percentage display with an accuracy of 1%. Multi-battery compatibility supporting lead-acid, ternary lithium, and lithium iron phosphate batteries, covering various series configurations from 12V to 84V. Dual-screen dynamic display featuring a three-digit LED display for voltage and an option to show either capacity percentage or temperature. Intelligent safety protection with adjustable low-capacity and over-temperature alert thresholds, reverse connection protection, and a power-off memory function. This product is designed for precise voltage and capacity monitoring across a wide range of battery types. The dual-screen display allows for easy reading of voltage and capacity or temperature, making it user-friendly. With built-in safety features, it ensures reliable operation and protection against common issues like reverse connection and overheating. Ideal for various applications, it meets the needs of both casual users and professionals. Color: Black Material: plastic Package Contents: 1*Battery Indicator 1*Red Cable 1*Black Cable