Review on Efficiently Charge Your Devices with Garmin High Speed Multi-Charger: Standard Packaging by Chris Sweeton

Works great for me. I can plug it into my accessory socket (cigarette lighter style) and then connect my Garmin to it and I have two charging ports with up to 2.4A output, making it suitable for Apple products or Android devices with fast charging. If your accessory socket is in the dash, be aware that this is just over twice as far as the Garmin connector protrudes from the dash. It's not a problem for me as my accessories are in the console.