R-Line is a brand new product line specifically designed for professional FPV racing competitions. It's the selling version of Toppilot batteries. It's also a subsidiary of the Tattu brand. It's got higher capacity, lower internal resistance, and lower landing temperatures. They are more powerful than any graphene battery. Generally, R-Line batteries have the same specs as our popular Toppilot batteries. There are different R-Line versions for the needs of different FPV racing competitions.