Are 11-speed SRAM RED eTap derailleur batteries compatible with SRAM RED and Force eTap AXS derailleurs? May 23, 2019 19:24 Updated Yes. Both groups use the same batteries and chargers. Related articles Are 11-speed SRAM RED eTap™ derailleur batteries compatible with Eagle AXS™ and SRAM RED eTap AXS™ derailleurs? Will 11-speed SRAM RED eTap levers communicate with SRAM RED, Force or Rival eTap AXS electronic derailleurs? How long does it take to charge an AXS battery? How many hours of riding can I get from a fully charged AXS™ derailleur battery? Why is my SRAM Force eTap AXS drivetrain noisy, especially the cassette? Comments 0 comments Article is closed for comments.