SRAMeTap / AXS Battery(Return to Product Page)

I have been through several of these with lots of hard use on a gravel bike. The battery life tends to start shortening after several years. Light indicators on derailleur work great.

Sends the pixies from precious to the derailleur. C'est la vie.

The batteries don't last all that long in the Mountain bike maybe 20 hrs. I have XO AXS, I did have a battery go dead on a ride. The light was GREENat the start of the ride. This one is going to be a spare I keep, in a storage pack, on the bike as an extra.

BTD insists that I file a review for a SRAM battery. So here it is...

This battery doesn't make anything special happen. It doesn't win friends or influence people. This battery (#3) just sits in my saddle bag waiting for Battery #1 or Battery #2 to die. Since I now have a spare, I expect I will never experience a dead battery out on the road. If I didn't buy a spare, #1 or #2 would die 40 miles from my house on the rainiest coldest day of the year.

That's how good this battery is. It sits in my bag and wards off death of other batteries.

Overpriced little batter but better than after market solutions. Works well, great to have a backup power source on these new superbikes.

don't choose cheap alternatives!

SRAM batteries come and go without any warning. It's good to have a spare. Thankfully SRAM has not changed the interface in any of their AXS systems so all batteries work the same. They are rather expensive, though, for what you get.

Bought an additional for longer rides or in case the first battery drained while riding but it's been more than a month and +3 rides a week and derailleur still flashes green so 5-8 extra hours minimum. Still a good idea to have a 2nd one. Just in case.

A must if you run Axs components and having one in the saddle bag is also a must. Yes if you run a 2x then you could always switch but not many bikes these days run 2X So I keep one in the saddle bag for those special occasions.

Wanted extra batteries just in case they are needed on one of my ultra events.

The Sram Red eTap batteries hold a charge for many rides (I think Sram notes that they should last 600 km and I think I've been able to exceed that) and they have survived for a couple of years of hot summer and cold winter riding, much of which was on chipseal roads. However, recently I've had to replace a couple of them as the tabs that fit into the slot on the derailleur have broken off, no doubt due to the extreme temperature changes and the vibration caused by the road surfaces. It is also important to remove these batteries when traveling long distances with the bike on a bike rack as the derailleurs recognize the motion and keep the units on which will discharge the batteries.

I carry an extra battery with me when I ride. My front deraileur battery lost power on a ride and if I had the extra battery it would have been an easy fix. Small and light weight, just add it to your saddle bag.

Bike tires direct never disappoints

These batteries are small enough to fit in a saddle bag, so worth the security of a spare.

SRAM advertises that these are supposed to keep a charge for a very long time but in my experience i'd rather not be stuck in a certain gear so i'll take the weight penalty and keep this with me

If you have electronic shifters that use batteries, this is a must have. Biketiresdirect always has great prices and great customer service.

Great to have a spare in case you forgot to charge the others in a while. They do lose some charge sitting in your seat bag though but top off quickly.

Just needed a spare just in case. Good price.

My current bike has sram batteries. On a minimum of 2 occasions I have had my battery die on me due to my forgetfulness to keep them charged. So I purchased a "backup" battery to keep in my saddlebag for those moments. It also helps me to remember to charge my existing battery!

An inexpensive way to ensure your MTB is fully charged and ready to ride. I keep a spare battery in the charger so there is a fully charged unit when needed.