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SRAM Red eTap Battery

Item # SRM00B3

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Item # SRM00B3


Power your eTap drivetrain.

The SRAM Red eTap Battery provides extra juice for your eTap derailleurs. This rechargeable battery is a great addition to your eTap drivetrain, giving you 600 miles of riding per charge. It's interchangeable between front and rear derailleurs for maximum convenience.

  • Powers SRAM eTap drivetrain for precise electronic shifting
  • Interchangeable between eTap front and rear derailleurs
  • 600 miles of riding per charge

Tech Specs

SRAM eTap front and rear derailleurs
Claimed Weight:
24 g
Recommended Use:
Manufacturer Warranty:
2 years

Reviews & Community


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Pin clamp will break!

  • Familiarity: I've used it several times

After x amount of Kilometers the battery pin that clamps at the bottom breaks! and the battery cant stay secure anymore.
Wont matter how careful you are, sooner or latter that pin will break.
Batteries are expensive, so if you're lucky to find that piece you can glue it back on.

Good backup

    If you're paranoid that your eTap batteries will run out any second, picking one of these up is good peace of mind. just drop on in your jersey pocket and you're good to go.

    Avg. ride time: 1h 18m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    Exactly what it's supposed to be

    • Familiarity: I've put it through the wringer

    Well built, functional, and does what it's supposed to do. With the standard etap charger, this battery charges up quickly and holds a charge for a surprisingly long distance/time. I've got 3 bikes outfitted with eTap for a total of 6 batteries in operation at any given time. So far this year, I've ridden about 2500 miles and have only charged the batteries a couple of times. Even then, they weren't showing low charge, I just charged them on principle.

    If you need an eTap battery as a spare, get one. It's a reasonable price. Keep a spare in your car so if you forget your batteries on race day, at least you can work your way through the rear cassette in a race.


      Both batteries broke after a few normal rides!

      A little more detail would be helpful. I have 3 sets of eTap on 3 different bikes and have had zero problems with battery breakage. I'd be curious to know how you could even break these.