SRAM eTap BatteryThe SRAM eTap Battery serves as the dedicated power source for the eTap electronic shifting system. Its versatile, interchangeable design allows the same unit to be used for both front and rear derailleurs, providing flexibility for on the go swaps. This lightweight battery is engineered for endurance, offering long range performance to keep your shifting precise through extended rides. The simple clip on attachment ensures quick removals for charging