Features: This Battery Capacitance Voltages Meter Tester provide monitoring of battery levels, ensuring accurate display of remaining power to prevent unexpected shutdowns. Featuring high Precisions and low power consumption, this lithium battery capacity display Modules is easy to install and for various devices. Suitable for electronics enthusiasts, electric vehicle users, easy carry device owners, and DIY project maker who require reliable battery monitoring. Perfect for use in electric vehicles, drones, power pack , and any equipment needing precise battery level Trackings. With its Small designs and efficient Performances, this voltmeter tester is essential tool for maintaining best battery health and Performances. Specifications: Material: plastic Size: about 40x15x2.5mm/2x1x0.1in Styles: multiple for option Package Includes: 1xLithium Battery Monitors note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.