Yes, there's a "contest" -- though everyone wins, so it's not really a contest. If you post a photo of you using a Volt, and the Volt logo on the battery is identifiable in the shot, then you get something free from SI. As extra
insurance, I stuck an SI business card in my pocket, just in case the Volt logo wasn't clear enough in the photos. The logo is sort of small, so it's hard to get it to show up. I also used a white battery, thinking the logo would show up better on that color. How can you pass up free stuff? Get your photo taken!