I have seen Goal Zero products at conventions for years now, and I finally had a chance to try one out for myself. In this case, it is the Flip 30, a recharger for phones and tablets, and just about anything else you have a USB cord for. Yes, the Flip 30 is a mobile battery, and I have written about several, so you probably know the drill. I think it would be better to … [Read more...] about Goal Zero Flip 30