Ensure your batteries are always in top condition with our battery monitor. The 12-72V universal voltage range allows it to be used with various battery types, providing accurate readings every time. The black casing and display offer excellent visibility, making it easy to check your battery's status and avoid unexpected power failures. Features -Color:Black -Material:ABS and electronic components -Size:4.90X3.00X2.30cm/1.93X1.18X0.90in -Voltage tolerance error: ±1%. -Work current: 5-15mA. -Refreshing speed: about 300ms/once. -Measurement accuracy: 1%. -Work humidity: 10-80%. -Work temperature: - centigrade-65 degree centigrade. -Suitable for voltage range: 12-72V. -This versatile digital display meter is compatible with a wide range of battery voltages from 12v to 72v, making it suitable for numerous applications, including automotive, marine, and solar . -Featuring a high-contrast black casing with bright digits, this meter ensures easy readability in various lighting conditions, allowing users to quickly and accurately check battery status. -The device offers precise and reliable battery capacity readings, providing users with essential information about their battery's health and charge level, ensuring optimal performance and longevity. -Designed for user-friendly installation, this digital display meter can be set up effortlessly without the need for professional skills or tools, making it accessible to all users. -Constructed with durability in mind, this meter is built to withstand the rigors of regular use, delivering consistent and dependable performance over an extended period, ensuring long-term reliability. Package list: 2 capacity testers