DJI has just released some new accessories: - Battery Charging Hub so you can charge 4 batteries at once. Seems reasonably priced. http://click.dji.com/fwad1dbZt1OvYw1B - DJI ND 8/18 Filters. Much better and more useful than the ND4 filter, which is too weak for bright sunny days. Again pretty well priced. http://click.dji.com/fwad1dbZr2xVMjFb My order is already in!