I bought this a few years ago and installed it in my car, but ended up switching cars without really using it. The following is a quote from the product description: Premium Design QC 3.0 Compatible 2-Port USB Car Charger Product Specifications Size: Approximately 71 x 48 x 34 mm Weight: Approximately 57g Input: DC 12V / 24V Output: 3.6-6.5V = 3A / 6.5-9V = 2A / 9-12V = 1.5A Full Speed Charging Achieves the best charging speed for any device with three cutting-edge technologies. Equipped with a QC 3.0 compatible port, it can charge compatible devices up to 80% in just 35 minutes. Furthermore, it is equipped with Anker's proprietary PowerIQ and VoltageBoost technologies, enabling full-speed charging for all USB devices. ⚫︎ High Output The total output of the two ports is 39W. Rapid charging is possible for any USB device simultaneously. ⚫︎ Compact and Easy to Use The ultra-compact design provides a step ahead in usability. The soft LED light makes it easy to find the ports even in the dark, and the carbon fiber mesh grip has an anti-slip function, making it easy to remove. ⚫︎ High Safety Equipped with excellent features such as surge protection and temperature management, you can use it with peace of mind for a long time.