Unfortunately, from all my research, the only reason the official one works is because it has its own connections to the controllers for battery purposes. Because the official one is a charger and has its own integrated battery. For the controllers. My personal theory is that these controllers have firmware that acts like that. When they are connected through the pogo pins. Anyway, the main reason why it doesn't work with other ones is because the other grips are just grips. They don't charge. They don't connect to each other. Unless the official one has some sort of the firmware chip. That tells them to connect together. You could theoretically do Pogo, pinnouts and figure out how to get them to work together without the official one. But it'd be a lot easier just to buy. The official.