Tattu R-Line Version 3.0 14.8V 4S 2000mAh 120C LiPo Battery - XT60What is R Line? 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 graphine battery. Generally, R Line batteries have the same specs as our popular Toppilot batteries. There are different R Line