Do graphene powerbanks already exist? We are not the first graphene powerbank nor are we claiming to be, you can find a list of other graphene powerbank brands here. There are companies in China already selling graphene powerbanks online here. Related articles Can you share Flash's battery chemical structure? How to calculate what charge % the Flash Powerbank can achieve for my device Troubleshooting Flash 1.0 & 2.0 How should I store Flash when it's not being used? Why is there a blue light flashing rapidly on my Flash?