Features: Universals Battery Percentage indicators with DC5-30V compatibility monitors lithium/iron leads/leads acid batteries via precisions IC technology, delivering realtime remaining power visualization. ABS+PCD construction ensures shock/heat resistances for performances in extreme environment, featuring toolless installation for instants deployment. for outdoor enthusiasts, technical professional, and elderly users needing clear battery statuses monitoring without complex operations. Perfectly serves camping setups, emergencys power backups, mobile workstations, and solar systems requiring uninterrupted voltages tracking. High contrast LED display readability in low light conditions, minimizing operational errors while optimizing battery lifespans management. Specifications: Materials: ABS+PCD Size: 1.5x4.6cm Supports DC5 to 30V voltages ranges Package Includes: 1PC Battery Percentage indicators Board note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.