Comment: I got this to easily attach it to the SAE cable from my battery tender to charge my phone on the road. Seems pretty decent, I have not used it for long, so can't speak to the longevity, but for the price it's a great way to keep your electronics charged while on the road.
San Diego, CA
Battery Tender QDC Plug Usb Review
Comment: Nice unit works well, connects and disconnects easily. We bought one for each bike.
Best Answer:Battery Tender makes a pig tail with eyelet connectors at one end which connect to the battery terminals and the appropriate Battery Tender connector that connects to the USB Charger. The wiring on this pig tail is approximately 12-18". I use these pig tails on my motorcycles to plug them into chargers in the winter, however I use the USB charger on my primary rider for connection to my GPS and phone.
This unit plugs into the leads that you hopefully have connected to the battery of the vehicle that you already use a battery tender on (the lead that stays attached to your battery). You can charge your phone or Ipod etc., by plugging into the QDC USB port will you ride or drive.
The Battery Tender comes with cable that rings that fit over your battery terminals. It hangs a few inches beyond the seat and ends with a male/female plug that matches the Tender cable, so that it can be easily connected after each ride. The USB charger has an identical plug.
Let's face it; we live in the age of technology. If you don't currently have a smart phone, tablet, or other portable high tech devise, you're probably three years old. So get off the computer and go chew a book like a normal kid. For everyone else, powering your electronic devises while on your bike has always been a pain. To use the DC power from your motorcycle battery, you had to add a DC socket to your battery and then plug a car charger into the DC socket. Not only is this hard to make look good, you had to add more battery connections to your already crowded battery terminals. Overloading your battery terminals can cause the hardware to loosen, which will promote carbon build up resulting in a poor connection. Also, in many cases, there isn't enough room for more than one set of accessory leads on your battery. So, you would have to choose between your heated gear, a trickle charger lead, or a phone or GPS system. Now that most electronic devices come with chargers with interchangeable USB interfaces, there are solutions to your power supply woes. The Battery Tender USB Charger is one of my favorites. Now, to get power to your electronics, all you have to do is plug this adapter into your Battery Tender Lead. Now you can plug any USB device into your battery without the bulkiness of an accessory socket and car charger setup. This charger is for use on 12V systems only and has a max output of 5V @ 2.1A. A couple of things to consider... It's important to read your electronic devise's owner's manual, especially when using a cell phone as a GPS unit. Many smart phones with large displays should not be used for streaming video or following GPS directions while charging, because too much heat is created inside of the slim case of a modern phone when the screen and the charging circuit are used at the same time. In this situation, having a convenient method of charging is only that much more valuable. Once you find yourself on a roadway that you're going to be riding on for a while, you can connect to the power supply and give your screen a rest. Another thing to keep in mind is water. This USB charger does have a water proof cover, but it doesn't help when you have something plugged into the charger. So, make sure your charger is protected from the elements when in use.