Enhance your vehicle or marine electrical system with this versatile USB Charger with Voltmeter, designed for reliable indoor and outdoor use, including ocean environments. Crafted with a waterproof and UV-stabilized nylon housing, this charger features a rubber splash-proof, tight-fitting front cap for superior durability and protection against harsh conditions. Equipped with dual USB ports delivering a total output current of 3.1A (2.1A and 1A), it efficiently charges mobile phones, tablets, GPS devices, digital cameras, PDAs, and more. The built-in voltmeter with a clear three-digit green LED display allows real-time monitoring of battery voltage within a 0-35V DC range, ensuring your electrical system stays within safe operating parameters. Key Features: · Waterproof and Durable Design: UV-stabilized nylon housing combined with a rubber splash-proof front cap makes it ideal for automotive, marine, and outdoor applications. · Dual USB Output Ports: Provides a total charging current of 3.1A (2.1A and 1A), compatible with a wide range of electronic devices for fast and efficient charging. · Real-Time Voltmeter Display: Features a three-digit green LED display to monitor battery voltage from 0 to 35V DC, helping you keep track of your power system status. · Advanced Safety Protections: Built-in overload, over-current, and short circuit protection ensure safe and reliable operation in various environments. · Universal Compatibility: Suitable for 12-24V vehicles including cars, trucks, buses, SUVs, boats, campers/RVs, ATVs, UTVs, golf carts, and other electrical devices. · Easy Installation: Includes mounting screws and labels for quick setup; can be installed horizontally or vertically to fit your space requirements. · High-Quality Terminal Connectors: Equipped with 2-pole nickel-plated brass terminal connectors for secure and corrosion-resistant connections. Specifications: · Material: UV Stabilized Nylon · Item Color: Black · LED Color: Green · USB Output Current: 3.1A (2.1A / 1A) · Interface: 2 USB Ports · Voltmeter Display Range: 0-35V DC · Voltmeter Mounting Hole Diameter: 29mm · Maximum Current: 10A · Package Weight: Approx. 355g / 12.5oz · Fitment: Universal for 12-24V automotive, marine, RV, truck, and other applications Package Includes: · 1 x USB Charger with Voltmeter · 3 x Cables · 9 x Blue Terminals · 4 x Screws This USB Charger with Voltmeter combines durability, safety, and convenience, making it an essential accessory for maintaining and powering your electronic devices across a variety of vehicles and marine applications.