Product Features: 

• Quick Charge 3.0 Technology: Charge compatible devices up to 4x faster than traditional chargers. Backwards compatible with all versions of Quick Charge Technology (1.0, 2.0 & 3.0). Quick charge 2.0 enables charger speed up to 75% faster than conventional technology, while 2nd Gen quick charge 2.0 make it iOS devices compatible.
• Intelligent Charging: Quick charge 3.0 USB port, built-in smart charging IC, will auto detects your devices and charges them at optimal speed, better charging performance.
• Waterproof and Heat Resistant: with IP66 waterproof grade, made of high and low temperature resistant nylon flame retardant materials, high or low temperature-resistant.
• Safety Driving: Built-in LED digital display voltage and current monitor, shows the accurate voltage status of device in real-time, prevent your motorcycle or car from starting hard, off and on intermittently and the headlights not enough bright cause by too low battery voltage, or prevent your motorcycle or car from engine instability or horns stopping working cause by too high battery voltage.
• Safety Protection: It's certified by CE & ROHS with Overload, Over-current and Short Circuit Protection to ensure charging safety, meanwhile, built-in converse connection protection that ensures the circuit won't be burnt out if wrong wiring.
• Wide Compatibility: Fits for Car, Boat, Marine, ATV, RV, Motorcycle and other 12-24V Vehicles. Use for mobile phones, Tablet, GPS, digital cameras, PDAs etc.

Note: 

• The voltage and current reading will be visible only by connecting to the battery and the voltage also can be read when the cover is engaged

Product Specification: 

Package Includes: 

• 1 x Voltmeter & Ammeter QC 3.0 Car Charger
• 2 x Insulated Terminals