The Waterproof Digital Battery Capacity Indicator and Voltmeter is an advanced, programmable panel gauge designed to monitor battery health in real time. Featuring a crisp, multi-color LCD screen, it displays exact voltage, remaining capacity percentage via a segment bar graph, and ambient temperature. Encapsulated in a dustproof and waterproof shell, this smart tester supports multi-chemistry setups (Lithium, Lead-Acid, LiFePO4) from 12V to 48V [FellDen, RoboShop], making it perfect for golf carts, solar arrays, marine vessels, and electric vehicles.