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? What is my order status? Troubleshooting Flash 1.0 & 2.0 I can't find evidence that Tesla has graphene in their batteries. Why is this the case? How should I store Flash when it's not being used?