Is there a different battery for the new SRAM RED eTap AXS 36T Max rear derailleur? October 16, 2020 21:38 No, the derailleur uses the same battery design for all AXS components and original SRAM RED eTap. Related articles Is there a marking or indication on the rear derailleur to know if it is a 36T Max or 33T Max version? Battery Drain - Battery Drains In Under 30 Days What type of brake pads are required for SRAM eTap AXS HRD road disc brakes? Will SRAM make periodic eTap 2x11 firmware updates? Comments 0 comments Article is closed for comments.