Are 11-speed SRAM RED eTap derailleur batteries compatible with SRAM RED, Force and Rival eTap AXS derailleurs? Yes, both groups use the same batteries and chargers. You can find out more in our article: All about SRAM AXS batteries Related articles Can I use the SRAM AXS App to view battery levels of RED eTap 11-speed derailleurs? What type of batteries do eTap AXS shift-brake levers require? Is Rival eTap AXS compatible with SRAM RED or Force eTap AXS parts? Do SRAM eTap AXS shifters work with eTap 11-speed front and rear derailleurs? What bottom bracket interface standards are the new SRAM RED or Force eTap AXS cranksets designed to work with? Are different spindle lengths required to fit wider variants such as BB386 and BBRight?