SRAM batteries are literally a snap to remove and charge. Just flip the tool-free battery latch up and slide the battery up and out of the derailleur. Then snap the battery into the charger and connect the charger to any USB-C power source. A full charge takes up to 60 minutes. Easy and fast charging for your SRAM batteries LED lights indicate charge status and power draw USB-C cable not included Compatibility: Derailleur: SRAM AXS / eTap front & rear derailleurs Derailleur: SRAM Transmission AXS Rear derailleurs Seatpost: RockShox Reverb AXS Dropper Posts