Replacement Battery + Charger for Sram AXS/eTap (XX1 X01 GX Reverb Red Force) (Battery x2 and Charger)Replacement Battery charger for Sram AXS eTap (XX1 X0 gX Reverb) - compatible with all AXS and eTAP systems - High quality very long lasting - compatible with the SRAM app which allows you to monitor battery level - comes with battery, red battery..