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AXS eTap Battery

4.25 out of 5 stars
4 Reviews
Color:One Color



AXS eTap Battery

The SRAM AXS 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
  • Item #SRM00B3
SRAM AXS components
Claimed Weight
0.8oz (24g)
Manufacturer Warranty
2 years

Overall Rating

4.5 based on 4 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 1 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 3 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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5 out of 5 stars

May 14, 2024

Carry a spare AXS battery!

I've used it several times

I hadn't carried a spare AXS battery on me until my front derailleur died on me during a training ride. Wasn't the end of things, but definitely was a wake up call to carry a spare. Just after pulling the trigger and getting this as a spare, another racer at BWR California was frantically trying to find an AXS battery in the parking lot for his rear derailleur which he inadvertently left at home. I lent him mine and saved his race...


Originally reviewed on

5 out of 5 stars

September 24, 2023

Seam etap battery

I've put it through the wringer

I’ve had these since the inception of etap. Yes the tabs are prone to breaking so be very careful installing. They are more expensive than they should be but the alternative china imitations are not recommended. Thank you Sram. I alway carry a couple of spares as they are very lightweight.

rgcdgray100097923 r

Originally reviewed on

5 out of 5 stars

February 5, 2022

Great Company

I've used it once or twice and have initial impressions
5' 10"

I purchased a new bike with the SRAM AXS etap wireless shifting. I went back to the dealer to purchase an extra battery. They told me they couldn?t get it until Sept 2023. I searched the internet and Backcountry had them. I ordered one and with hours I had a tracking number and a few days later I had the product. A few weeks later I decided to order another one and again it arrived very quickly. It is so refreshing to find a company that provide excellent customer service. I will order from this company again.

William F
2 out of 5 stars

September 10, 2021

Battery Tab Breakage Issue

I've put it through the wringer

The struggle is REAL people! Both my battery tabs broke off so cause I'm cheap I use electrical tape to help secure them. I should send a photo of this to Shimano haha! Can't imagine SRAM is proud of the look of electrical tape on thousand dollar derailleurs, but apparently they don't mind as they offer no relief for defective batteries past two years. Not even an exchange and a redesign. Come on SRAM you can do better.


Originally reviewed on