Just got em last night and it was raining so haven't mounted them yet. I did play around with them. Extremely rugged both the lights and the mounts. Feel heavy (video showed 10oz but they feel heavier). Very , very bright. App works well ; change intensity and has a slow to fast flash pattern. I turned them on at 75% constant power for 15 minutes and they used 25% of the battery life so 2 flights should be achieved easy enough. One of the cubes actually shut down after 15 minutes as they have thermal protection. I dont see them doing that when mounted since the xsp has a lot of down draft from the propellers. They do get extremely hot but they were static when I tried em out. Am I pleased? - very much so far.
Personally I think the cubes are over priced. If you go to Walmart and get a couple of bicycle lights mount them to your aircraft and They will last approximately four hours each so I don't know what you're doing with these things. I got a couple of them mounted to my Typhoon H because sometimes I like to fly at night time, works great for me.