Comprehensive charging solution for vehicles 30 ports and a dedicated 84ft DC output cable enable simultaneous charging of multiple devices, including smartphones and tablets Fast charging technology Supports QC and PD protocols; its 5W port delivers fast charging speeds for all compatible devices Voltage display for peace of mind Integrated digital voltmeter provides real readings of your vehicle's battery voltage to help monitor health during charging Fit for vehicles Compatible with both 12V and 24V vehicles like cars and trucks; the extended cable allows flexible use in any setting Use scenarios Family road trips: Keep the entire group's phones and tablets charged at once, while monitoring the vehicle battery status during long drives Service or fleet vehicles: Maintain power for multiple drivers' devices throughout the day, with a clear voltage readout to assess battery health Camping or emergency prep: Position the charger and devices away from the dash using the long cable for convenient access and reliable charging in varied environments