12V-24V Dual USB Car Charger, 4.2A, 2-Port Socket with Digital Voltmeter for Vehicles

Here are four key advantages of this intelligent dual USB car charger, summarized within 200 characters each:

1. Intelligent Charging Efficiency: The dual USB ports provide a total of 4.2A, with each port offering 2.1A. The smart charging IC auto-detects devices, ensuring optimal charging speeds for both, maximizing efficiency.

2. Battery Health Monitoring: The built-in LED voltmeter offers real-time monitoring of your vehicle's battery health. The luminous digits make it easy to check data at night or in darkness, ensuring you're always aware of your battery's status.

3. Charging Safety with Overcharge Protection: Embedded with a 10A fuse, the charger provides overload protection, preventing overheating and device damage. This ensures safe charging and prolongs device life.

4. Waterproof & Durable Design: With an IP66 waterproof rating and a splash-resistant lid, the USB port is secure in wet conditions. Made of high and low temperature-resistant, flame retardant PC material, it's durable and strong, built to last in various environments.