Are 11-speed SRAM RED eTap derailleur batteries compatible with SRAM RED and Force eTap AXS derailleurs? SRAM USA July 15, 2019 14:33 Updated Yes. Both groups use the same batteries and chargers. Related articles Will 11-speed SRAM RED eTap™ levers communicate with RED or Force eTap AXS™ electronic derailleurs? Is there a WiFLi version of SRAM RED or Force eTap AXS™ rear derailleurs with a higher max cog size? Can RED and Force eTap AXS™ be fitted to a bike that is currently compatible with 8, 9, 10 or 11-speed groupsets? Are the frame fit specs for RED eTap AXS™ road different than 11-speed RED eTap™? Where can I find the frame fit specs? When is RED eTap AXS™ available for retail aftermarket purchase? Comments 0 comments Article is closed for comments.