Thus, presumably, you can have a handful of 18500 cells available for cheaper than the cost of the equivalent amount of LiPo power By plugging the module in to your goggles, you are able to run the goggles off the internal batteries in the Powerplay. The module runs off of 18500 batteries, which are very common LiOn cells that run cheaper and are more energy dense than the traditional LiPo cells that we run in our goggles. While this item is not for every pilot out there, there is a large group that will benefit greatly from the extra tool.
In addition to being able to be used to power your goggles, provide an on/off switch, the added piece serves as an external DVR, monitor, and solution for reviewing footage. The IMRC Powerplay is a small device that pairs with Fatshark goggles to add some conveniences to the goggle experience.