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? How long does it take to charge an AXS battery? Why is my SRAM Force eTap AXS drivetrain noisy, especially the cassette? How many hours of riding can I get from a fully charged AXS™ derailleur battery? Will 11-speed SRAM RED eTap™ levers communicate with RED or Force eTap AXS™ electronic derailleurs? Comments 0 comments Article is closed for comments.