eTap Battery Front Or Rear Derailleur Quantity: 1


Pay for your purchase in four interest-free installments (due every two weeks).

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Detail Information


The SRAM battery is the power source for eTap® or AXS™ components. The same power unit is interchangeable between front and rear eTap® AXS™ derailleurs, Eagle AXS™ derailleurs, and the RockShox Reverb AXS™ seatpost.

Since the batteries are universal, buying 1 or 2 extras means you are never caught with a dead battery 5 minutes before a ride. The included cover plate protects the contact points during transport or storage and has a selector switch so you know the charge state of all your batteries. Even if you do lose power on a ride, simply swap them around to run the rear derailleur and make it home.


  • Up to 1000 kilometers of riding per charge
  • Charges in 60 minutes or less
  • Lightweight (24g) and easy to transport
  • Same battery design for all AXS™ components and original SRAM RED® eTap®

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