I've purchased 3 of the Vision Spinner 2s (1600 mAH) from Ebay. It took me a while to figure out what was going on but there are a lot of people selling Spinner 2 clones and they don't mention that they're clones in their auctions. They look just like the authentic ones. The first one that I bought about a month ago was the real deal with the scratch off code and its working great. The next two that I recently bought didn't have the scratch off security code and I'm having trouble with both of them. On one of them you have to press the button very firmly or it cuts out and the other one takes forever to charge but it dies very quickly. I'm getting a refund on the one with the charging issues but the other one didn't act up for a couple of weeks and it only had a two week warranty, so it was a total loss. These clones, fakes, knock offs or whatever you want to call them are junk! On the other hand, the authentic ones are very good batteries in my opinion. To me, they're pretty darn close to my Vamo and Lavatube. If you are thinking about buying one of these do yourself a favor and make sure that they have the scratch off security code before you buy them.