Review on Upgraded YN568EX III Speedlite Nikon by Josh Allred

I had a ancestor of one of these for a couple of years. Due to an accident, he sailed away and had to be replaced. I bought this one thinking it would be just as reliable. Unfortunately it worked ONCE. I took out the batteries, put them safely in her bag along with the other two flashes, took them home, put them on a shelf and left them there for three months. When I tried to use them two weeks ago, ONLY the old flashes worked. I couldn't even turn it on. I didn't even damage them in transit, I took them from one room to another to install them. I don't know what the problem is, but if you buy it I recommend buying a protection plan that will be sold to you.