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SRAMAXS eTap Battery


Item # SRM00B3

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  • One Color, One Size ($56.00)
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Item # SRM00B3

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

Tech Specs
CompatibilitySRAM AXS components
Recommended Usecycling
Manufacturer Warranty2 years

Actual Weight

One Color, One Size

Claimed Weight

Claimed weights are provided by the vendor.

Have questions? Chat with a Gearhead


Actual weights are measured in-house by the Competitive Cyclist team.

Have questions? Chat with a Gearhead

What do you think about this product?


>Rating: 2

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.

>Rating: 5


I've put it through the wringer

Long battery life. Easy to use. Works perfectly on My Domane (road) and My Blur (XC) :)


Does this batter work with standard Sram Red Etap system?


Hi, is this battery compatible with sram ASX?

yes it is

>Rating: 5

Does the job - needed an extra

Not much to say here - great product. I wanted an extra battery to carry along in case one of my batteries runs out while on a ride. The new battery just works. Thanks Competitive Cyclist.

>Rating: 3

Pin clamp will break!

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.

I've gone thru 4 of these batteries with the same exact problem: tab that holds the battery in breaks off, every time on the rear derailleur. Poor design and/or construction in that area. Other than that, it has done its job.

>Rating: 5

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.

>Rating: 5

Exactly what it's supposed to be

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.

>Rating: 2


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.

Yep I have gone thru 6 already. Sram is aware of the problem but they keep breaking. I called them and they said that they had a bad batch. Totally bogus. They just keep breaking. I need to devise a way to keep them there after they break. I might just go back to mechanical. 100$ every 6 months is not practical. Sram warranty covered the 1st 2 years but now I’d done. I love the system but the battery issue is real. I have met many other cyclists with the same issue.